diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bbb-bone-buses.dtsi b/arch/arm/boot/dts/am335x-bbb-bone-buses.dtsi
--- a/arch/arm/boot/dts/am335x-bbb-bone-buses.dtsi	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/am335x-bbb-bone-buses.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2020 Deepak Khatri <deepaklorkhatri7@gmail.com>
+ * Copyright (C) 2021 Robert Nelson <robertcnelson@gmail.com>
+ * See Cape Interface Spec page for more info on Bone Buses
+ * https://elinux.org/Beagleboard:BeagleBone_cape_interface_spec
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+// For dummy refrence when peripheral is not available.
+&{/} {
+	not_available: not_available {
+		// Use &not_available when required.
+		// This node is responsible to create these entries,
+		// /sys/firmware/devicetree/base/__symbols__/not_available
+		// /sys/firmware/devicetree/base/not_available
+	};
+};
+
+// For compatible bone pinmuxing
+bone_pinmux: &am33xx_pinmux {
+	emmc_pins: pinmux_emmc_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_CSN1, PIN_INPUT_PULLUP, MUX_MODE2) /* gpmc_csn1.mmc1_clk */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_CSN2, PIN_INPUT_PULLUP, MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD0, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD1, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD2, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD3, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD4, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD5, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD6, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD7, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */
+		>;
+	};
+
+	nxp_hdmi_bonelt_pins: nxp_hdmi_bonelt_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE3)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+		>;
+	};
+
+	nxp_hdmi_bonelt_off_pins: nxp_hdmi_bonelt_off_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE3)
+		>;
+	};
+
+	mcasp0_pins: mcasp0_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKX, PIN_INPUT_PULLUP, MUX_MODE0) /* mcasp0_ahcklx.mcasp0_ahclkx */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKR, PIN_OUTPUT_PULLDOWN, MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2*/
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSX, PIN_OUTPUT_PULLUP, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A11, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_a11.GPIO1_27 */
+		>;
+	};
+};
+
+// ADC
+bone_adc: &tscadc {
+
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-boneblack-common.dtsi b/arch/arm/boot/dts/am335x-boneblack-common.dtsi
--- a/arch/arm/boot/dts/am335x-boneblack-common.dtsi	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-boneblack-common.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -22,10 +22,6 @@
 	non-removable;
 };
 
-&rtc {
-	system-power-controller;
-};
-
 / {
 	memory@80000000 {
 		device_type = "memory";
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts
--- a/arch/arm/boot/dts/am335x-boneblack.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-boneblack.dts	2022-06-12 13:07:42.547111701 -0400
@@ -12,6 +12,11 @@
 / {
 	model = "TI AM335x BeagleBone Black";
 	compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-boneblack.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
 
 &cpu0_opp_table {
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-boneblack-uboot.dts b/arch/arm/boot/dts/am335x-boneblack-uboot.dts
--- a/arch/arm/boot/dts/am335x-boneblack-uboot.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/am335x-boneblack-uboot.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bbb-bone-buses.dtsi"
+
+/ {
+	model = "TI AM335x BeagleBone Black";
+	compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-boneblack-uboot.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x20000000>; /* 512 MB */
+	};
+};
+
+&cpu0_opp_table {
+	/*
+	 * All PG 2.0 silicon may not support 1GHz but some of the early
+	 * BeagleBone Blacks have PG 2.0 silicon which is guaranteed
+	 * to support 1GHz OPP so enable it for PG 2.0 on this board.
+	 */
+	oppnitro-1000000000 {
+		opp-supported-hw = <0x06 0x0100>;
+	};
+};
+
+&ldo3_reg {
+	regulator-min-microvolt = <1800000>;
+	regulator-max-microvolt = <1800000>;
+	regulator-always-on;
+};
+
+&mmc1 {
+	vmmc-supply = <&vmmcsd_fixed>;
+};
+
+&rtc {
+	system-power-controller;
+};
+
+&gpio0 {
+	gpio-line-names =
+		"[mdio_data]",
+		"[mdio_clk]",
+		"P9_22 [spi0_sclk]",
+		"P9_21 [spi0_d0]",
+		"P9_18 [spi0_d1]",
+		"P9_17 [spi0_cs0]",
+		"[mmc0_cd]",
+		"P8_42A [ecappwm0]",
+		"P8_35 [lcd d12]",
+		"P8_33 [lcd d13]",
+		"P8_31 [lcd d14]",
+		"P8_32 [lcd d15]",
+		"P9_20 [i2c2_sda]",
+		"P9_19 [i2c2_scl]",
+		"P9_26 [uart1_rxd]",
+		"P9_24 [uart1_txd]",
+		"[rmii1_txd3]",
+		"[rmii1_txd2]",
+		"[usb0_drvvbus]",
+		"[hdmi cec]",
+		"P9_41B",
+		"[rmii1_txd1]",
+		"P8_19 [ehrpwm2a]",
+		"P8_13 [ehrpwm2b]",
+		"NC",
+		"NC",
+		"P8_14",
+		"P8_17",
+		"[rmii1_txd0]",
+		"[rmii1_refclk]",
+		"P9_11 [uart4_rxd]",
+		"P9_13 [uart4_txd]";
+};
+
+&gpio1 {
+	gpio-line-names =
+		"P8_25 [mmc1_dat0]",
+		"[mmc1_dat1]",
+		"P8_5 [mmc1_dat2]",
+		"P8_6 [mmc1_dat3]",
+		"P8_23 [mmc1_dat4]",
+		"P8_22 [mmc1_dat5]",
+		"P8_3 [mmc1_dat6]",
+		"P8_4 [mmc1_dat7]",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"P8_12",
+		"P8_11",
+		"P8_16",
+		"P8_15",
+		"P9_15A",
+		"P9_23",
+		"P9_14 [ehrpwm1a]",
+		"P9_16 [ehrpwm1b]",
+		"[emmc rst]",
+		"[usr0 led]",
+		"[usr1 led]",
+		"[usr2 led]",
+		"[usr3 led]",
+		"[hdmi irq]",
+		"[usb vbus oc]",
+		"[hdmi audio]",
+		"P9_12",
+		"P8_26",
+		"P8_21 [emmc]",
+		"P8_20 [emmc]";
+};
+
+&gpio2 {
+	gpio-line-names =
+		"P9_15B",
+		"P8_18",
+		"P8_7",
+		"P8_8",
+		"P8_10",
+		"P8_9",
+		"P8_45 [hdmi]",
+		"P8_46 [hdmi]",
+		"P8_43 [hdmi]",
+		"P8_44 [hdmi]",
+		"P8_41 [hdmi]",
+		"P8_42 [hdmi]",
+		"P8_39 [hdmi]",
+		"P8_40 [hdmi]",
+		"P8_37 [hdmi]",
+		"P8_38 [hdmi]",
+		"P8_36 [hdmi]",
+		"P8_34 [hdmi]",
+		"[rmii1_rxd3]",
+		"[rmii1_rxd2]",
+		"[rmii1_rxd1]",
+		"[rmii1_rxd0]",
+		"P8_27 [hdmi]",
+		"P8_29 [hdmi]",
+		"P8_28 [hdmi]",
+		"P8_30 [hdmi]",
+		"[mmc0_dat3]",
+		"[mmc0_dat2]",
+		"[mmc0_dat1]",
+		"[mmc0_dat0]",
+		"[mmc0_clk]",
+		"[mmc0_cmd]";
+};
+
+&gpio3 {
+	gpio-line-names =
+		"[mii col]",
+		"[mii crs]",
+		"[mii rx err]",
+		"[mii tx en]",
+		"[mii rx dv]",
+		"[i2c0 sda]",
+		"[i2c0 scl]",
+		"[jtag emu0]",
+		"[jtag emu1]",
+		"[mii tx clk]",
+		"[mii rx clk]",
+		"NC",
+		"NC",
+		"[usb vbus en]",
+		"P9_31 [spi1_sclk]",
+		"P9_29 [spi1_d0]",
+		"P9_30 [spi1_d1]",
+		"P9_28 [spi1_cs0]",
+		"P9_42B [ecappwm0]",
+		"P9_27",
+		"P9_41A",
+		"P9_25",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC";
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-boneblack-uboot-univ.dts b/arch/arm/boot/dts/am335x-boneblack-uboot-univ.dts
--- a/arch/arm/boot/dts/am335x-boneblack-uboot-univ.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/am335x-boneblack-uboot-univ.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,184 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bone-common-univ.dtsi"
+
+/ {
+	model = "TI AM335x BeagleBone Black";
+	compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-boneblack-uboot-univ.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
+};
+
+&cpu0_opp_table {
+	/*
+	 * All PG 2.0 silicon may not support 1GHz but some of the early
+	 * BeagleBone Blacks have PG 2.0 silicon which is guaranteed
+	 * to support 1GHz OPP so enable it for PG 2.0 on this board.
+	 */
+	oppnitro-1000000000 {
+		opp-supported-hw = <0x06 0x0100>;
+	};
+};
+
+&ldo3_reg {
+	regulator-min-microvolt = <1800000>;
+	regulator-max-microvolt = <1800000>;
+	regulator-always-on;
+};
+
+&mmc1 {
+	vmmc-supply = <&vmmcsd_fixed>;
+};
+
+&gpio0 {
+	gpio-line-names =
+		"[mdio_data]",
+		"[mdio_clk]",
+		"P9_22 [spi0_sclk]",
+		"P9_21 [spi0_d0]",
+		"P9_18 [spi0_d1]",
+		"P9_17 [spi0_cs0]",
+		"[mmc0_cd]",
+		"P8_42A [ecappwm0]",
+		"P8_35 [lcd d12]",
+		"P8_33 [lcd d13]",
+		"P8_31 [lcd d14]",
+		"P8_32 [lcd d15]",
+		"P9_20 [i2c2_sda]",
+		"P9_19 [i2c2_scl]",
+		"P9_26 [uart1_rxd]",
+		"P9_24 [uart1_txd]",
+		"[rmii1_txd3]",
+		"[rmii1_txd2]",
+		"[usb0_drvvbus]",
+		"[hdmi cec]",
+		"P9_41B",
+		"[rmii1_txd1]",
+		"P8_19 [ehrpwm2a]",
+		"P8_13 [ehrpwm2b]",
+		"NC",
+		"NC",
+		"P8_14",
+		"P8_17",
+		"[rmii1_txd0]",
+		"[rmii1_refclk]",
+		"P9_11 [uart4_rxd]",
+		"P9_13 [uart4_txd]";
+};
+
+&gpio1 {
+	gpio-line-names =
+		"P8_25 [mmc1_dat0]",
+		"[mmc1_dat1]",
+		"P8_5 [mmc1_dat2]",
+		"P8_6 [mmc1_dat3]",
+		"P8_23 [mmc1_dat4]",
+		"P8_22 [mmc1_dat5]",
+		"P8_3 [mmc1_dat6]",
+		"P8_4 [mmc1_dat7]",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"P8_12",
+		"P8_11",
+		"P8_16",
+		"P8_15",
+		"P9_15A",
+		"P9_23",
+		"P9_14 [ehrpwm1a]",
+		"P9_16 [ehrpwm1b]",
+		"[emmc rst]",
+		"[usr0 led]",
+		"[usr1 led]",
+		"[usr2 led]",
+		"[usr3 led]",
+		"[hdmi irq]",
+		"[usb vbus oc]",
+		"[hdmi audio]",
+		"P9_12",
+		"P8_26",
+		"P8_21 [emmc]",
+		"P8_20 [emmc]";
+};
+
+&gpio2 {
+	gpio-line-names =
+		"P9_15B",
+		"P8_18",
+		"P8_7",
+		"P8_8",
+		"P8_10",
+		"P8_9",
+		"P8_45 [hdmi]",
+		"P8_46 [hdmi]",
+		"P8_43 [hdmi]",
+		"P8_44 [hdmi]",
+		"P8_41 [hdmi]",
+		"P8_42 [hdmi]",
+		"P8_39 [hdmi]",
+		"P8_40 [hdmi]",
+		"P8_37 [hdmi]",
+		"P8_38 [hdmi]",
+		"P8_36 [hdmi]",
+		"P8_34 [hdmi]",
+		"[rmii1_rxd3]",
+		"[rmii1_rxd2]",
+		"[rmii1_rxd1]",
+		"[rmii1_rxd0]",
+		"P8_27 [hdmi]",
+		"P8_29 [hdmi]",
+		"P8_28 [hdmi]",
+		"P8_30 [hdmi]",
+		"[mmc0_dat3]",
+		"[mmc0_dat2]",
+		"[mmc0_dat1]",
+		"[mmc0_dat0]",
+		"[mmc0_clk]",
+		"[mmc0_cmd]";
+};
+
+&gpio3 {
+	gpio-line-names =
+		"[mii col]",
+		"[mii crs]",
+		"[mii rx err]",
+		"[mii tx en]",
+		"[mii rx dv]",
+		"[i2c0 sda]",
+		"[i2c0 scl]",
+		"[jtag emu0]",
+		"[jtag emu1]",
+		"[mii tx clk]",
+		"[mii rx clk]",
+		"NC",
+		"NC",
+		"[usb vbus en]",
+		"P9_31 [spi1_sclk]",
+		"P9_29 [spi1_d0]",
+		"P9_30 [spi1_d1]",
+		"P9_28 [spi1_cs0]",
+		"P9_42B [ecappwm0]",
+		"P9_27",
+		"P9_41A",
+		"P9_25",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC",
+		"NC";
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-boneblack-wireless.dts b/arch/arm/boot/dts/am335x-boneblack-wireless.dts
--- a/arch/arm/boot/dts/am335x-boneblack-wireless.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-boneblack-wireless.dts	2022-06-12 13:07:42.547111701 -0400
@@ -14,6 +14,11 @@
 	model = "TI AM335x BeagleBone Black Wireless";
 	compatible = "ti,am335x-bone-black-wireless", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
 
+	chosen {
+		base_dtb = "am335x-boneblack-wireless.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
+
 	wlan_en_reg: fixedregulator@2 {
 		compatible = "regulator-fixed";
 		regulator-name = "wlan-en-regulator";
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-boneblue.dts b/arch/arm/boot/dts/am335x-boneblue.dts
--- a/arch/arm/boot/dts/am335x-boneblue.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-boneblue.dts	2022-06-12 13:07:42.547111701 -0400
@@ -14,6 +14,8 @@
 
 	chosen {
 		stdout-path = &uart0;
+		base_dtb = "am335x-boneblue.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
 	};
 
 	leds {
@@ -341,7 +343,7 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ax8975@c {
-				compatible = "ak,ak8975";
+				compatible = "asahi-kasei,ak8975";
 				reg = <0x0c>;
 			};
 		};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi
--- a/arch/arm/boot/dts/am335x-bone-common.dtsi	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-bone-common.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -26,14 +26,14 @@
 		compatible = "gpio-leds";
 
 		led2 {
-			label = "beaglebone:green:heartbeat";
+			label = "beaglebone:green:usr0";
 			gpios = <&gpio1 21 GPIO_ACTIVE_HIGH>;
 			linux,default-trigger = "heartbeat";
 			default-state = "off";
 		};
 
 		led3 {
-			label = "beaglebone:green:mmc0";
+			label = "beaglebone:green:usr1";
 			gpios = <&gpio1 22 GPIO_ACTIVE_HIGH>;
 			linux,default-trigger = "mmc0";
 			default-state = "off";
@@ -63,9 +63,6 @@
 };
 
 &am33xx_pinmux {
-	pinctrl-names = "default";
-	pinctrl-0 = <&clkout2_pin>;
-
 	user_leds_s0: user_leds_s0 {
 		pinctrl-single,pins = <
 			AM33XX_PADCONF(AM335X_PIN_GPMC_A5, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_a5.gpio1_21 */
@@ -96,12 +93,6 @@
 		>;
 	};
 
-	clkout2_pin: pinmux_clkout2_pin {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR1, PIN_OUTPUT_PULLDOWN, MUX_MODE3)	/* xdma_event_intr1.clkout2 */
-		>;
-	};
-
 	cpsw_default: cpsw_default {
 		pinctrl-single,pins = <
 			/* Slave 1 */
@@ -189,6 +180,7 @@
 	pinctrl-0 = <&uart0_pins>;
 
 	status = "okay";
+	symlink = "bone/uart/0";
 };
 
 &usb0 {
@@ -207,6 +199,7 @@
 
 	status = "okay";
 	clock-frequency = <400000>;
+	symlink = "bone/i2c/0";
 
 	tps: tps@24 {
 		reg = <0x24>;
@@ -230,6 +223,7 @@
 
 	status = "okay";
 	clock-frequency = <100000>;
+	symlink = "bone/i2c/2";
 
 	cape_eeprom0: cape_eeprom0@54 {
 		compatible = "atmel,24c256";
@@ -399,8 +393,18 @@
 &rtc {
 	clocks = <&clk_32768_ck>, <&clk_24mhz_clkctrl AM3_CLK_24MHZ_CLKDIV32K_CLKCTRL 0>;
 	clock-names = "ext-clk", "int-clk";
+	system-power-controller;
 };
 
 &pruss_tm {
 	status = "okay";
 };
+
+&tscadc {
+	adc {
+		ti,adc-channels = <0 1 2 3 4 5 6 7>;
+		ti,chan-step-avg = <16 16 16 16 16 16 16 16>;
+		ti,chan-step-opendelay = <0x98 0x98 0x98 0x98 0x98 0x98 0x98 0x98>;
+		ti,chan-step-sampledelay = <0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0>;
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bone-common-univ.dtsi b/arch/arm/boot/dts/am335x-bone-common-univ.dtsi
--- a/arch/arm/boot/dts/am335x-bone-common-univ.dtsi	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/am335x-bone-common-univ.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,2909 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+&am33xx_pinmux {
+	/************************/
+	/* P8 Header */
+	/************************/
+
+	/* P8_01                GND */
+
+	/* P8_02                GND */
+
+
+	/* P8_03 (ZCZ ball R9) emmc */
+	P8_03_default_pin: pinmux_P8_03_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad6.gpio1_6 */
+	P8_03_gpio_pin: pinmux_P8_03_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad6.gpio1_6 */
+	P8_03_gpio_pu_pin: pinmux_P8_03_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad6.gpio1_6 */
+	P8_03_gpio_pd_pin: pinmux_P8_03_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad6.gpio1_6 */
+	P8_03_gpio_input_pin: pinmux_P8_03_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad6.gpio1_6 */
+
+	/* P8_04 (ZCZ ball T9) emmc */
+	P8_04_default_pin: pinmux_P8_04_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad7.gpio1_7 */
+	P8_04_gpio_pin: pinmux_P8_04_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad7.gpio1_7 */
+	P8_04_gpio_pu_pin: pinmux_P8_04_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad7.gpio1_7 */
+	P8_04_gpio_pd_pin: pinmux_P8_04_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad7.gpio1_7 */
+	P8_04_gpio_input_pin: pinmux_P8_04_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad7.gpio1_7 */
+
+	/* P8_05 (ZCZ ball R8) emmc */
+	P8_05_default_pin: pinmux_P8_05_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad2.gpio1_2 */
+	P8_05_gpio_pin: pinmux_P8_05_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad2.gpio1_2 */
+	P8_05_gpio_pu_pin: pinmux_P8_05_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad2.gpio1_2 */
+	P8_05_gpio_pd_pin: pinmux_P8_05_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad2.gpio1_2 */
+	P8_05_gpio_input_pin: pinmux_P8_05_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad2.gpio1_2 */
+
+	/* P8_06 (ZCZ ball T8) emmc */
+	P8_06_default_pin: pinmux_P8_06_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad3.gpio1_3 */
+	P8_06_gpio_pin: pinmux_P8_06_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad3.gpio1_3 */
+	P8_06_gpio_pu_pin: pinmux_P8_06_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad3.gpio1_3 */
+	P8_06_gpio_pd_pin: pinmux_P8_06_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad3.gpio1_3 */
+	P8_06_gpio_input_pin: pinmux_P8_06_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad3.gpio1_3 */
+
+	/* P8_07 (ZCZ ball R7) gpio2_2 */
+	P8_07_default_pin: pinmux_P8_07_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_advn_ale.gpio2_2 */
+	P8_07_gpio_pin: pinmux_P8_07_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_advn_ale.gpio2_2 */
+	P8_07_gpio_pu_pin: pinmux_P8_07_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_advn_ale.gpio2_2 */
+	P8_07_gpio_pd_pin: pinmux_P8_07_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_advn_ale.gpio2_2 */
+	P8_07_gpio_input_pin: pinmux_P8_07_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_advn_ale.gpio2_2 */
+	P8_07_timer_pin: pinmux_P8_07_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* gpmc_advn_ale.timer4 */
+
+	/* P8_08 (ZCZ ball T7) gpio2_3 */
+	P8_08_default_pin: pinmux_P8_08_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_oen_ren.gpio2_3 */
+	P8_08_gpio_pin: pinmux_P8_08_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_oen_ren.gpio2_3 */
+	P8_08_gpio_pu_pin: pinmux_P8_08_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_oen_ren.gpio2_3 */
+	P8_08_gpio_pd_pin: pinmux_P8_08_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_oen_ren.gpio2_3 */
+	P8_08_gpio_input_pin: pinmux_P8_08_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_oen_ren.gpio2_3 */
+	P8_08_timer_pin: pinmux_P8_08_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* gpmc_oen_ren.timer7 */
+
+	/* P8_09 (ZCZ ball T6) gpio2_5 */
+	P8_09_default_pin: pinmux_P8_09_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_gpio_pin: pinmux_P8_09_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_gpio_pu_pin: pinmux_P8_09_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_gpio_pd_pin: pinmux_P8_09_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_gpio_input_pin: pinmux_P8_09_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_timer_pin: pinmux_P8_09_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* gpmc_be0n_cle.timer5 */
+
+	/* P8_10 (ZCZ ball U6) gpio2_4 */
+	P8_10_default_pin: pinmux_P8_10_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wen.gpio2_4 */
+	P8_10_gpio_pin: pinmux_P8_10_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_wen.gpio2_4 */
+	P8_10_gpio_pu_pin: pinmux_P8_10_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wen.gpio2_4 */
+	P8_10_gpio_pd_pin: pinmux_P8_10_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wen.gpio2_4 */
+	P8_10_gpio_input_pin: pinmux_P8_10_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_wen.gpio2_4 */
+	P8_10_timer_pin: pinmux_P8_10_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* gpmc_wen.timer6 */
+
+	/* P8_11 (ZCZ ball R12) gpio1_13 */
+	P8_11_default_pin: pinmux_P8_11_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P8_11_gpio_pin: pinmux_P8_11_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad13.gpio1_13 */
+	P8_11_gpio_pu_pin: pinmux_P8_11_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P8_11_gpio_pd_pin: pinmux_P8_11_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P8_11_gpio_input_pin: pinmux_P8_11_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad13.gpio1_13 */
+	P8_11_qep_pin: pinmux_P8_11_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad13.eqep2b_in */
+	P8_11_pruout_pin: pinmux_P8_11_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_ad13.pru0_out15 */
+
+	/* P8_12 (ZCZ ball T12) gpio1_12 */
+	P8_12_default_pin: pinmux_P8_12_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P8_12_gpio_pin: pinmux_P8_12_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad12.gpio1_12 */
+	P8_12_gpio_pu_pin: pinmux_P8_12_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P8_12_gpio_pd_pin: pinmux_P8_12_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P8_12_gpio_input_pin: pinmux_P8_12_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad12.gpio1_12 */
+	P8_12_qep_pin: pinmux_P8_12_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad12.eqep2a_in */
+	P8_12_pruout_pin: pinmux_P8_12_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_ad12.pru0_out14 */
+
+	/* P8_13 (ZCZ ball T10) gpio0_23 */
+	P8_13_default_pin: pinmux_P8_13_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P8_13_gpio_pin: pinmux_P8_13_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad9.gpio0_23 */
+	P8_13_gpio_pu_pin: pinmux_P8_13_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P8_13_gpio_pd_pin: pinmux_P8_13_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P8_13_gpio_input_pin: pinmux_P8_13_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad9.gpio0_23 */
+	P8_13_pwm_pin: pinmux_P8_13_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad9.ehrpwm2b */
+
+	/* P8_14 (ZCZ ball T11) gpio0_26 */
+	P8_14_default_pin: pinmux_P8_14_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad10.gpio0_26 */
+	P8_14_gpio_pin: pinmux_P8_14_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad10.gpio0_26 */
+	P8_14_gpio_pu_pin: pinmux_P8_14_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad10.gpio0_26 */
+	P8_14_gpio_pd_pin: pinmux_P8_14_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad10.gpio0_26 */
+	P8_14_gpio_input_pin: pinmux_P8_14_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad10.gpio0_26 */
+	P8_14_pwm_pin: pinmux_P8_14_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad10.ehrpwm2_tripzone_input */
+
+	/* P8_15 (ZCZ ball U13) gpio1_15 */
+	P8_15_default_pin: pinmux_P8_15_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P8_15_gpio_pin: pinmux_P8_15_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad15.gpio1_15 */
+	P8_15_gpio_pu_pin: pinmux_P8_15_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P8_15_gpio_pd_pin: pinmux_P8_15_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P8_15_gpio_input_pin: pinmux_P8_15_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad15.gpio1_15 */
+	P8_15_qep_pin: pinmux_P8_15_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad15.eqep2_strobe */
+	P8_15_pru_ecap_pin: pinmux_P8_15_pru_ecap_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* gpmc_ad15.pr1_ecap0_ecap_capin_apwm_o */
+	P8_15_pruin_pin: pinmux_P8_15_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_ad15.pru0_in15 */
+
+	/* P8_16 (ZCZ ball V13) gpio1_14 */
+	P8_16_default_pin: pinmux_P8_16_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P8_16_gpio_pin: pinmux_P8_16_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad14.gpio1_14 */
+	P8_16_gpio_pu_pin: pinmux_P8_16_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P8_16_gpio_pd_pin: pinmux_P8_16_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P8_16_gpio_input_pin: pinmux_P8_16_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad14.gpio1_14 */
+	P8_16_qep_pin: pinmux_P8_16_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad14.eqep2_index */
+	P8_16_pruin_pin: pinmux_P8_16_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_ad14.pru0_in14 */
+
+	/* P8_17 (ZCZ ball U12) gpio0_27 */
+	P8_17_default_pin: pinmux_P8_17_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad11.gpio0_27 */
+	P8_17_gpio_pin: pinmux_P8_17_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad11.gpio0_27 */
+	P8_17_gpio_pu_pin: pinmux_P8_17_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad11.gpio0_27 */
+	P8_17_gpio_pd_pin: pinmux_P8_17_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad11.gpio0_27 */
+	P8_17_gpio_input_pin: pinmux_P8_17_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad11.gpio0_27 */
+	P8_17_pwm_pin: pinmux_P8_17_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad11.ehrpwm0_synco */
+
+	/* P8_18 (ZCZ ball V12) gpio2_1 */
+	P8_18_default_pin: pinmux_P8_18_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P8_18_gpio_pin: pinmux_P8_18_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_clk.gpio2_1 */
+	P8_18_gpio_pu_pin: pinmux_P8_18_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P8_18_gpio_pd_pin: pinmux_P8_18_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P8_18_gpio_input_pin: pinmux_P8_18_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_clk.gpio2_1 */
+
+	/* P8_19 (ZCZ ball U10) gpio0_22 */
+	P8_19_default_pin: pinmux_P8_19_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad8.gpio0_22 */
+	P8_19_gpio_pin: pinmux_P8_19_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad8.gpio0_22 */
+	P8_19_gpio_pu_pin: pinmux_P8_19_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad8.gpio0_22 */
+	P8_19_gpio_pd_pin: pinmux_P8_19_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad8.gpio0_22 */
+	P8_19_gpio_input_pin: pinmux_P8_19_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad8.gpio0_22 */
+	P8_19_pwm_pin: pinmux_P8_19_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad8.ehrpwm2a */
+
+	/* P8_20 (ZCZ ball V9) emmc */
+	P8_20_default_pin: pinmux_P8_20_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn2.gpio1_31 */
+	P8_20_gpio_pin: pinmux_P8_20_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_csn2.gpio1_31 */
+	P8_20_gpio_pu_pin: pinmux_P8_20_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn2.gpio1_31 */
+	P8_20_gpio_pd_pin: pinmux_P8_20_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn2.gpio1_31 */
+	P8_20_gpio_input_pin: pinmux_P8_20_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_csn2.gpio1_31 */
+	P8_20_pruout_pin: pinmux_P8_20_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* gpmc_csn2.pru1_out13 */
+	P8_20_pruin_pin: pinmux_P8_20_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_csn2.pru1_in13 */
+
+	/* P8_21 (ZCZ ball U9) emmc */
+	P8_21_default_pin: pinmux_P8_21_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn1.gpio1_30 */
+	P8_21_gpio_pin: pinmux_P8_21_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_csn1.gpio1_30 */
+	P8_21_gpio_pu_pin: pinmux_P8_21_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn1.gpio1_30 */
+	P8_21_gpio_pd_pin: pinmux_P8_21_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn1.gpio1_30 */
+	P8_21_gpio_input_pin: pinmux_P8_21_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_csn1.gpio1_30 */
+	P8_21_pruout_pin: pinmux_P8_21_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* gpmc_csn1.pru1_out12 */
+	P8_21_pruin_pin: pinmux_P8_21_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_csn1.pru1_in12 */
+
+	/* P8_22 (ZCZ ball V8) emmc */
+	P8_22_default_pin: pinmux_P8_22_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad5.gpio1_5 */
+	P8_22_gpio_pin: pinmux_P8_22_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad5.gpio1_5 */
+	P8_22_gpio_pu_pin: pinmux_P8_22_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad5.gpio1_5 */
+	P8_22_gpio_pd_pin: pinmux_P8_22_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad5.gpio1_5 */
+	P8_22_gpio_input_pin: pinmux_P8_22_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad5.gpio1_5 */
+
+	/* P8_23 (ZCZ ball U8) emmc */
+	P8_23_default_pin: pinmux_P8_23_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad4.gpio1_4 */
+	P8_23_gpio_pin: pinmux_P8_23_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad4.gpio1_4 */
+	P8_23_gpio_pu_pin: pinmux_P8_23_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad4.gpio1_4 */
+	P8_23_gpio_pd_pin: pinmux_P8_23_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad4.gpio1_4 */
+	P8_23_gpio_input_pin: pinmux_P8_23_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad4.gpio1_4 */
+
+	/* P8_24 (ZCZ ball V7) emmc */
+	P8_24_default_pin: pinmux_P8_24_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad1.gpio1_1 */
+	P8_24_gpio_pin: pinmux_P8_24_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad1.gpio1_1 */
+	P8_24_gpio_pu_pin: pinmux_P8_24_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad1.gpio1_1 */
+	P8_24_gpio_pd_pin: pinmux_P8_24_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad1.gpio1_1 */
+	P8_24_gpio_input_pin: pinmux_P8_24_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad1.gpio1_1 */
+
+	/* P8_25 (ZCZ ball U7) emmc */
+	P8_25_default_pin: pinmux_P8_25_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad0.gpio1_0 */
+	P8_25_gpio_pin: pinmux_P8_25_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad0.gpio1_0 */
+	P8_25_gpio_pu_pin: pinmux_P8_25_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad0.gpio1_0 */
+	P8_25_gpio_pd_pin: pinmux_P8_25_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad0.gpio1_0 */
+	P8_25_gpio_input_pin: pinmux_P8_25_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad0.gpio1_0 */
+
+	/* P8_26 (ZCZ ball V6) gpio1_29 */
+	P8_26_default_pin: pinmux_P8_26_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x087c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn0.gpio1_29 */
+	P8_26_gpio_pin: pinmux_P8_26_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x087c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_csn0.gpio1_29 */
+	P8_26_gpio_pu_pin: pinmux_P8_26_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x087c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn0.gpio1_29 */
+	P8_26_gpio_pd_pin: pinmux_P8_26_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x087c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn0.gpio1_29 */
+	P8_26_gpio_input_pin: pinmux_P8_26_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x087c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_csn0.gpio1_29 */
+
+	/* P8_27 (ZCZ ball U5) hdmi */
+	P8_27_default_pin: pinmux_P8_27_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_vsync.gpio2_22 */
+	P8_27_gpio_pin: pinmux_P8_27_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_vsync.gpio2_22 */
+	P8_27_gpio_pu_pin: pinmux_P8_27_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_vsync.gpio2_22 */
+	P8_27_gpio_pd_pin: pinmux_P8_27_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_vsync.gpio2_22 */
+	P8_27_gpio_input_pin: pinmux_P8_27_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_vsync.gpio2_22 */
+	P8_27_pruout_pin: pinmux_P8_27_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_vsync.pru1_out8 */
+	P8_27_pruin_pin: pinmux_P8_27_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE6) >; };			/* lcd_vsync.pru1_in8 */
+
+	/* P8_28 (ZCZ ball V5) hdmi */
+	P8_28_default_pin: pinmux_P8_28_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_pclk.gpio2_24 */
+	P8_28_gpio_pin: pinmux_P8_28_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_pclk.gpio2_24 */
+	P8_28_gpio_pu_pin: pinmux_P8_28_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_pclk.gpio2_24 */
+	P8_28_gpio_pd_pin: pinmux_P8_28_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_pclk.gpio2_24 */
+	P8_28_gpio_input_pin: pinmux_P8_28_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_pclk.gpio2_24 */
+	P8_28_pruout_pin: pinmux_P8_28_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_pclk.pru1_out10 */
+	P8_28_pruin_pin: pinmux_P8_28_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE6) >; };			/* lcd_pclk.pru1_in10 */
+
+	/* P8_29 (ZCZ ball R5) hdmi */
+	P8_29_default_pin: pinmux_P8_29_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_hsync.gpio2_23 */
+	P8_29_gpio_pin: pinmux_P8_29_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_hsync.gpio2_23 */
+	P8_29_gpio_pu_pin: pinmux_P8_29_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_hsync.gpio2_23 */
+	P8_29_gpio_pd_pin: pinmux_P8_29_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_hsync.gpio2_23 */
+	P8_29_gpio_input_pin: pinmux_P8_29_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_hsync.gpio2_23 */
+	P8_29_pruout_pin: pinmux_P8_29_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_hsync.pru1_out9 */
+	P8_29_pruin_pin: pinmux_P8_29_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE6) >; };			/* lcd_hsync.pru1_in9 */
+
+	/* P8_30 (ZCZ ball R6) hdmi */
+	P8_30_default_pin: pinmux_P8_30_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_gpio_pin: pinmux_P8_30_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_gpio_pu_pin: pinmux_P8_30_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_gpio_pd_pin: pinmux_P8_30_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_gpio_input_pin: pinmux_P8_30_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE7) >; };			/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_pruout_pin: pinmux_P8_30_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_ac_bias_en.pru1_out11 */
+	P8_30_pruin_pin: pinmux_P8_30_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE6) >; };			/* lcd_ac_bias_en.pru1_in11 */
+
+	/* P8_31 (ZCZ ball V4) hdmi */
+	P8_31_default_pin: pinmux_P8_31_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data14.gpio0_10 */
+	P8_31_gpio_pin: pinmux_P8_31_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data14.gpio0_10 */
+	P8_31_gpio_pu_pin: pinmux_P8_31_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data14.gpio0_10 */
+	P8_31_gpio_pd_pin: pinmux_P8_31_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data14.gpio0_10 */
+	P8_31_gpio_input_pin: pinmux_P8_31_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data14.gpio0_10 */
+	P8_31_qep_pin: pinmux_P8_31_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* lcd_data14.eqep1_index */
+	P8_31_uart_pin: pinmux_P8_31_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* lcd_data14.uart5_rxd */
+
+	/* P8_32 (ZCZ ball T5) hdmi */
+	P8_32_default_pin: pinmux_P8_32_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data15.gpio0_11 */
+	P8_32_gpio_pin: pinmux_P8_32_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data15.gpio0_11 */
+	P8_32_gpio_pu_pin: pinmux_P8_32_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data15.gpio0_11 */
+	P8_32_gpio_pd_pin: pinmux_P8_32_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data15.gpio0_11 */
+	P8_32_gpio_input_pin: pinmux_P8_32_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data15.gpio0_11 */
+	P8_32_qep_pin: pinmux_P8_32_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* lcd_data15.eqep1_strobe */
+
+	/* P8_33 (ZCZ ball V3) hdmi */
+	P8_33_default_pin: pinmux_P8_33_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data13.gpio0_9 */
+	P8_33_gpio_pin: pinmux_P8_33_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data13.gpio0_9 */
+	P8_33_gpio_pu_pin: pinmux_P8_33_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data13.gpio0_9 */
+	P8_33_gpio_pd_pin: pinmux_P8_33_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data13.gpio0_9 */
+	P8_33_gpio_input_pin: pinmux_P8_33_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data13.gpio0_9 */
+	P8_33_qep_pin: pinmux_P8_33_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* lcd_data13.eqep1b_in */
+
+	/* P8_34 (ZCZ ball U4) hdmi */
+	P8_34_default_pin: pinmux_P8_34_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data11.gpio2_17 */
+	P8_34_gpio_pin: pinmux_P8_34_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data11.gpio2_17 */
+	P8_34_gpio_pu_pin: pinmux_P8_34_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data11.gpio2_17 */
+	P8_34_gpio_pd_pin: pinmux_P8_34_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data11.gpio2_17 */
+	P8_34_gpio_input_pin: pinmux_P8_34_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data11.gpio2_17 */
+	P8_34_pwm_pin: pinmux_P8_34_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; };	/* lcd_data11.ehrpwm1b */
+
+	/* P8_35 (ZCZ ball V2) hdmi */
+	P8_35_default_pin: pinmux_P8_35_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data12.gpio0_8 */
+	P8_35_gpio_pin: pinmux_P8_35_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data12.gpio0_8 */
+	P8_35_gpio_pu_pin: pinmux_P8_35_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data12.gpio0_8 */
+	P8_35_gpio_pd_pin: pinmux_P8_35_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data12.gpio0_8 */
+	P8_35_gpio_input_pin: pinmux_P8_35_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data12.gpio0_8 */
+	P8_35_qep_pin: pinmux_P8_35_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* lcd_data12.eqep1a_in */
+
+	/* P8_36 (ZCZ ball U3) hdmi */
+	P8_36_default_pin: pinmux_P8_36_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data10.gpio2_16 */
+	P8_36_gpio_pin: pinmux_P8_36_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data10.gpio2_16 */
+	P8_36_gpio_pu_pin: pinmux_P8_36_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data10.gpio2_16 */
+	P8_36_gpio_pd_pin: pinmux_P8_36_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data10.gpio2_16 */
+	P8_36_gpio_input_pin: pinmux_P8_36_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data10.gpio2_16 */
+	P8_36_pwm_pin: pinmux_P8_36_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; };	/* lcd_data10.ehrpwm1a */
+
+	/* P8_37 (ZCZ ball U1) hdmi */
+	P8_37_default_pin: pinmux_P8_37_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data8.gpio2_14 */
+	P8_37_gpio_pin: pinmux_P8_37_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data8.gpio2_14 */
+	P8_37_gpio_pu_pin: pinmux_P8_37_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data8.gpio2_14 */
+	P8_37_gpio_pd_pin: pinmux_P8_37_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data8.gpio2_14 */
+	P8_37_gpio_input_pin: pinmux_P8_37_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data8.gpio2_14 */
+	P8_37_pwm_pin: pinmux_P8_37_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; };	/* lcd_data8.ehrpwm1_tripzone_input */
+	P8_37_uart_pin: pinmux_P8_37_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* lcd_data8.uart5_txd */
+
+	/* P8_38 (ZCZ ball U2) hdmi */
+	P8_38_default_pin: pinmux_P8_38_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data9.gpio2_15 */
+	P8_38_gpio_pin: pinmux_P8_38_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data9.gpio2_15 */
+	P8_38_gpio_pu_pin: pinmux_P8_38_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data9.gpio2_15 */
+	P8_38_gpio_pd_pin: pinmux_P8_38_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data9.gpio2_15 */
+	P8_38_gpio_input_pin: pinmux_P8_38_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data9.gpio2_15 */
+	P8_38_pwm_pin: pinmux_P8_38_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; };	/* lcd_data9.ehrpwm0_synco */
+	P8_38_uart_pin: pinmux_P8_38_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* lcd_data9.uart5_rxd */
+
+	/* P8_39 (ZCZ ball T3) hdmi */
+	P8_39_default_pin: pinmux_P8_39_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data6.gpio2_12 */
+	P8_39_gpio_pin: pinmux_P8_39_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data6.gpio2_12 */
+	P8_39_gpio_pu_pin: pinmux_P8_39_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data6.gpio2_12 */
+	P8_39_gpio_pd_pin: pinmux_P8_39_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data6.gpio2_12 */
+	P8_39_gpio_input_pin: pinmux_P8_39_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data6.gpio2_12 */
+	P8_39_qep_pin: pinmux_P8_39_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* lcd_data6.eqep2_index */
+	P8_39_pruout_pin: pinmux_P8_39_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data6.pru1_out6 */
+	P8_39_pruin_pin: pinmux_P8_39_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data6.pru1_in6 */
+
+	/* P8_40 (ZCZ ball T4) hdmi */
+	P8_40_default_pin: pinmux_P8_40_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data7.gpio2_13 */
+	P8_40_gpio_pin: pinmux_P8_40_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data7.gpio2_13 */
+	P8_40_gpio_pu_pin: pinmux_P8_40_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data7.gpio2_13 */
+	P8_40_gpio_pd_pin: pinmux_P8_40_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data7.gpio2_13 */
+	P8_40_gpio_input_pin: pinmux_P8_40_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data7.gpio2_13 */
+	P8_40_qep_pin: pinmux_P8_40_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* lcd_data7.eqep2_strobe */
+	P8_40_pruout_pin: pinmux_P8_40_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data7.pru1_out7 */
+	P8_40_pruin_pin: pinmux_P8_40_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data7.pru1_in7 */
+
+	/* P8_41 (ZCZ ball T1) hdmi */
+	P8_41_default_pin: pinmux_P8_41_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data4.gpio2_10 */
+	P8_41_gpio_pin: pinmux_P8_41_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data4.gpio2_10 */
+	P8_41_gpio_pu_pin: pinmux_P8_41_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data4.gpio2_10 */
+	P8_41_gpio_pd_pin: pinmux_P8_41_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data4.gpio2_10 */
+	P8_41_gpio_input_pin: pinmux_P8_41_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data4.gpio2_10 */
+	P8_41_qep_pin: pinmux_P8_41_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* lcd_data4.eqep2a_in */
+	P8_41_pruout_pin: pinmux_P8_41_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data4.pru1_out4 */
+	P8_41_pruin_pin: pinmux_P8_41_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data4.pru1_in4 */
+
+	/* P8_42 (ZCZ ball T2) hdmi */
+	P8_42_default_pin: pinmux_P8_42_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data5.gpio2_11 */
+	P8_42_gpio_pin: pinmux_P8_42_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data5.gpio2_11 */
+	P8_42_gpio_pu_pin: pinmux_P8_42_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data5.gpio2_11 */
+	P8_42_gpio_pd_pin: pinmux_P8_42_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data5.gpio2_11 */
+	P8_42_gpio_input_pin: pinmux_P8_42_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data5.gpio2_11 */
+	P8_42_qep_pin: pinmux_P8_42_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* lcd_data5.eqep2b_in */
+	P8_42_pruout_pin: pinmux_P8_42_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data5.pru1_out5 */
+	P8_42_pruin_pin: pinmux_P8_42_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data5.pru1_in5 */
+
+	/* P8_43 (ZCZ ball R3) hdmi */
+	P8_43_default_pin: pinmux_P8_43_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data2.gpio2_8 */
+	P8_43_gpio_pin: pinmux_P8_43_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data2.gpio2_8 */
+	P8_43_gpio_pu_pin: pinmux_P8_43_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data2.gpio2_8 */
+	P8_43_gpio_pd_pin: pinmux_P8_43_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data2.gpio2_8 */
+	P8_43_gpio_input_pin: pinmux_P8_43_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data2.gpio2_8 */
+	P8_43_pwm_pin: pinmux_P8_43_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* lcd_data2.ehrpwm2_tripzone_input */
+	P8_43_pruout_pin: pinmux_P8_43_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data2.pru1_out2 */
+	P8_43_pruin_pin: pinmux_P8_43_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data2.pru1_in2 */
+
+	/* P8_44 (ZCZ ball R4) hdmi */
+	P8_44_default_pin: pinmux_P8_44_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data3.gpio2_9 */
+	P8_44_gpio_pin: pinmux_P8_44_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data3.gpio2_9 */
+	P8_44_gpio_pu_pin: pinmux_P8_44_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data3.gpio2_9 */
+	P8_44_gpio_pd_pin: pinmux_P8_44_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data3.gpio2_9 */
+	P8_44_gpio_input_pin: pinmux_P8_44_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data3.gpio2_9 */
+	P8_44_pwm_pin: pinmux_P8_44_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* lcd_data3.ehrpwm0_synco */
+	P8_44_pruout_pin: pinmux_P8_44_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data3.pru1_out3 */
+	P8_44_pruin_pin: pinmux_P8_44_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data3.pru1_in3 */
+
+	/* P8_45 (ZCZ ball R1) hdmi */
+	P8_45_default_pin: pinmux_P8_45_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data0.gpio2_6 */
+	P8_45_gpio_pin: pinmux_P8_45_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data0.gpio2_6 */
+	P8_45_gpio_pu_pin: pinmux_P8_45_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data0.gpio2_6 */
+	P8_45_gpio_pd_pin: pinmux_P8_45_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data0.gpio2_6 */
+	P8_45_gpio_input_pin: pinmux_P8_45_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data0.gpio2_6 */
+	P8_45_pwm_pin: pinmux_P8_45_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* lcd_data0.ehrpwm2a */
+	P8_45_pruout_pin: pinmux_P8_45_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data0.pru1_out0 */
+	P8_45_pruin_pin: pinmux_P8_45_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data0.pru1_in0 */
+
+	/* P8_46 (ZCZ ball R2) hdmi */
+	P8_46_default_pin: pinmux_P8_46_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data1.gpio2_7 */
+	P8_46_gpio_pin: pinmux_P8_46_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data1.gpio2_7 */
+	P8_46_gpio_pu_pin: pinmux_P8_46_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data1.gpio2_7 */
+	P8_46_gpio_pd_pin: pinmux_P8_46_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data1.gpio2_7 */
+	P8_46_gpio_input_pin: pinmux_P8_46_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data1.gpio2_7 */
+	P8_46_pwm_pin: pinmux_P8_46_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* lcd_data1.ehrpwm2b */
+	P8_46_pruout_pin: pinmux_P8_46_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data1.pru1_out1 */
+	P8_46_pruin_pin: pinmux_P8_46_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data1.pru1_in1 */
+
+	/************************/
+	/* P9 Header */
+	/************************/
+
+	/* P9_01                GND */
+
+	/* P9_02                GND */
+
+	/* P9_03                3V3 */
+
+	/* P9_04                3V3 */
+
+	/* P9_05                VDD_5V */
+
+	/* P9_06                VDD_5V */
+
+	/* P9_07                SYS_5V */
+
+	/* P9_08                SYS_5V */
+
+	/* P9_09                PWR_BUT */
+
+	/* P9_10                RSTn */
+
+	/* P9_11 (ZCZ ball T17) gpio0_30 */
+	P9_11_default_pin: pinmux_P9_11_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wait0.gpio0_30 */
+	P9_11_gpio_pin: pinmux_P9_11_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_wait0.gpio0_30 */
+	P9_11_gpio_pu_pin: pinmux_P9_11_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wait0.gpio0_30 */
+	P9_11_gpio_pd_pin: pinmux_P9_11_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wait0.gpio0_30 */
+	P9_11_gpio_input_pin: pinmux_P9_11_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_wait0.gpio0_30 */
+	P9_11_uart_pin: pinmux_P9_11_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_wait0.uart4_rxd */
+
+	/* P9_12 (ZCZ ball U18) gpio1_28 */
+	P9_12_default_pin: pinmux_P9_12_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P9_12_gpio_pin: pinmux_P9_12_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_be1n.gpio1_28 */
+	P9_12_gpio_pu_pin: pinmux_P9_12_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P9_12_gpio_pd_pin: pinmux_P9_12_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P9_12_gpio_input_pin: pinmux_P9_12_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_be1n.gpio1_28 */
+
+	/* P9_13 (ZCZ ball U17) gpio0_31 */
+	P9_13_default_pin: pinmux_P9_13_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wpn.gpio0_31 */
+	P9_13_gpio_pin: pinmux_P9_13_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_wpn.gpio0_31 */
+	P9_13_gpio_pu_pin: pinmux_P9_13_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wpn.gpio0_31 */
+	P9_13_gpio_pd_pin: pinmux_P9_13_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wpn.gpio0_31 */
+	P9_13_gpio_input_pin: pinmux_P9_13_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_wpn.gpio0_31 */
+	P9_13_uart_pin: pinmux_P9_13_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_wpn.uart4_txd */
+
+	/* P9_14 (ZCZ ball U14) gpio1_18 */
+	P9_14_default_pin: pinmux_P9_14_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a2.gpio1_18 */
+	P9_14_gpio_pin: pinmux_P9_14_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a2.gpio1_18 */
+	P9_14_gpio_pu_pin: pinmux_P9_14_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a2.gpio1_18 */
+	P9_14_gpio_pd_pin: pinmux_P9_14_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a2.gpio1_18 */
+	P9_14_gpio_input_pin: pinmux_P9_14_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a2.gpio1_18 */
+	P9_14_pwm_pin: pinmux_P9_14_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a2.ehrpwm1a */
+
+	/* P9_15 (ZCZ ball R13) gpio1_16 */
+	P9_15_default_pin: pinmux_P9_15_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a0.gpio1_16 */
+	P9_15_gpio_pin: pinmux_P9_15_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a0.gpio1_16 */
+	P9_15_gpio_pu_pin: pinmux_P9_15_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a0.gpio1_16 */
+	P9_15_gpio_pd_pin: pinmux_P9_15_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a0.gpio1_16 */
+	P9_15_gpio_input_pin: pinmux_P9_15_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a0.gpio1_16 */
+	P9_15_pwm_pin: pinmux_P9_15_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a0.ehrpwm1_tripzone_input */
+
+	/* P9_16 (ZCZ ball T14) gpio1_19 */
+	P9_16_default_pin: pinmux_P9_16_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a3.gpio1_19 */
+	P9_16_gpio_pin: pinmux_P9_16_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a3.gpio1_19 */
+	P9_16_gpio_pu_pin: pinmux_P9_16_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a3.gpio1_19 */
+	P9_16_gpio_pd_pin: pinmux_P9_16_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a3.gpio1_19 */
+	P9_16_gpio_input_pin: pinmux_P9_16_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a3.gpio1_19 */
+	P9_16_pwm_pin: pinmux_P9_16_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a3.ehrpwm1b */
+
+	/* P9_17 (ZCZ ball A16) gpio0_5 */
+	P9_17_default_pin: pinmux_P9_17_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_cs0.gpio0_5 */
+	P9_17_gpio_pin: pinmux_P9_17_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_cs0.gpio0_5 */
+	P9_17_gpio_pu_pin: pinmux_P9_17_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_cs0.gpio0_5 */
+	P9_17_gpio_pd_pin: pinmux_P9_17_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_cs0.gpio0_5 */
+	P9_17_gpio_input_pin: pinmux_P9_17_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_INPUT | MUX_MODE7) >; };			/* spi0_cs0.gpio0_5 */
+	P9_17_spi_cs_pin: pinmux_P9_17_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_cs0.spi0_cs0 */
+	P9_17_i2c_pin: pinmux_P9_17_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_cs0.i2c1_scl */
+	P9_17_pwm_pin: pinmux_P9_17_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_cs0.ehrpwm0_synci */
+	P9_17_pru_uart_pin: pinmux_P9_17_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_cs0.pr1_uart0_txd */
+
+	/* P9_18 (ZCZ ball B16) gpio0_4 */
+	P9_18_default_pin: pinmux_P9_18_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d1.gpio0_4 */
+	P9_18_gpio_pin: pinmux_P9_18_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_d1.gpio0_4 */
+	P9_18_gpio_pu_pin: pinmux_P9_18_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d1.gpio0_4 */
+	P9_18_gpio_pd_pin: pinmux_P9_18_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_d1.gpio0_4 */
+	P9_18_gpio_input_pin: pinmux_P9_18_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_INPUT | MUX_MODE7) >; };			/* spi0_d1.gpio0_4 */
+	P9_18_spi_pin: pinmux_P9_18_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_d1.spi0_d1 */
+	P9_18_i2c_pin: pinmux_P9_18_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_d1.i2c1_sda */
+	P9_18_pwm_pin: pinmux_P9_18_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_d1.ehrpwm0_tripzone_input */
+	P9_18_pru_uart_pin: pinmux_P9_18_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_d1.pr1_uart0_rxd */
+
+	/* P9_19 (ZCZ ball D17) i2c2_scl */
+	P9_19_default_pin: pinmux_P9_19_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rtsn.i2c2_scl */
+	P9_19_gpio_pin: pinmux_P9_19_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_rtsn.gpio0_13 */
+	P9_19_gpio_pu_pin: pinmux_P9_19_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_rtsn.gpio0_13 */
+	P9_19_gpio_pd_pin: pinmux_P9_19_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_rtsn.gpio0_13 */
+	P9_19_gpio_input_pin: pinmux_P9_19_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_INPUT | MUX_MODE7) >; };			/* uart1_rtsn.gpio0_13 */
+	P9_19_timer_pin: pinmux_P9_19_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* uart1_rtsn.timer5 */
+	P9_19_can_pin: pinmux_P9_19_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_INPUT_PULLUP | MUX_MODE2) >; };		/* uart1_rtsn.dcan0_rx */
+	P9_19_i2c_pin: pinmux_P9_19_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rtsn.i2c2_scl */
+	P9_19_spi_cs_pin: pinmux_P9_19_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart1_rtsn.spi1_cs1 */
+	P9_19_pru_uart_pin: pinmux_P9_19_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_rtsn.pr1_uart0_rts_n */
+
+	/* P9_20 (ZCZ ball D18) i2c2_sda */
+	P9_20_default_pin: pinmux_P9_20_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_ctsn.i2c2_sda */
+	P9_20_gpio_pin: pinmux_P9_20_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_ctsn.gpio0_12 */
+	P9_20_gpio_pu_pin: pinmux_P9_20_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_ctsn.gpio0_12 */
+	P9_20_gpio_pd_pin: pinmux_P9_20_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_ctsn.gpio0_12 */
+	P9_20_gpio_input_pin: pinmux_P9_20_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_INPUT | MUX_MODE7) >; };			/* uart1_ctsn.gpio0_12 */
+	P9_20_timer_pin: pinmux_P9_20_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* uart1_ctsn.timer6 */
+	P9_20_can_pin: pinmux_P9_20_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | MUX_MODE2) >; };		/* uart1_ctsn.dcan0_tx */
+	P9_20_i2c_pin: pinmux_P9_20_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_ctsn.i2c2_sda */
+	P9_20_spi_cs_pin: pinmux_P9_20_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart1_ctsn.spi1_cs0 */
+	P9_20_pru_uart_pin: pinmux_P9_20_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_ctsn.pr1_uart0_cts_n */
+
+	/* P9_21 (ZCZ ball B17) gpio0_3 */
+	P9_21_default_pin: pinmux_P9_21_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d0.gpio0_3 */
+	P9_21_gpio_pin: pinmux_P9_21_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_d0.gpio0_3 */
+	P9_21_gpio_pu_pin: pinmux_P9_21_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d0.gpio0_3 */
+	P9_21_gpio_pd_pin: pinmux_P9_21_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_d0.gpio0_3 */
+	P9_21_gpio_input_pin: pinmux_P9_21_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_INPUT | MUX_MODE7) >; };			/* spi0_d0.gpio0_3 */
+	P9_21_spi_pin: pinmux_P9_21_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_d0.spi0_d0 */
+	P9_21_uart_pin: pinmux_P9_21_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* spi0_d0.uart2_txd */
+	P9_21_i2c_pin: pinmux_P9_21_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_d0.i2c2_scl */
+	P9_21_pwm_pin: pinmux_P9_21_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_d0.ehrpwm0b */
+	P9_21_pru_uart_pin: pinmux_P9_21_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_d0.pr1_uart0_rts_n */
+
+	/* P9_22 (ZCZ ball A17) gpio0_2 */
+	P9_22_default_pin: pinmux_P9_22_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_sclk.gpio0_2 */
+	P9_22_gpio_pin: pinmux_P9_22_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_sclk.gpio0_2 */
+	P9_22_gpio_pu_pin: pinmux_P9_22_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_sclk.gpio0_2 */
+	P9_22_gpio_pd_pin: pinmux_P9_22_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_sclk.gpio0_2 */
+	P9_22_gpio_input_pin: pinmux_P9_22_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_INPUT | MUX_MODE7) >; };			/* spi0_sclk.gpio0_2 */
+	P9_22_spi_sclk_pin: pinmux_P9_22_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_sclk.spi0_sclk */
+	P9_22_uart_pin: pinmux_P9_22_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* spi0_sclk.uart2_rxd */
+	P9_22_i2c_pin: pinmux_P9_22_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_sclk.i2c2_sda */
+	P9_22_pwm_pin: pinmux_P9_22_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_sclk.ehrpwm0a */
+	P9_22_pru_uart_pin: pinmux_P9_22_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_sclk.pr1_uart0_cts_n */
+
+	/* P9_23 (ZCZ ball V14) gpio1_17 */
+	P9_23_default_pin: pinmux_P9_23_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a1.gpio1_17 */
+	P9_23_gpio_pin: pinmux_P9_23_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a1.gpio1_17 */
+	P9_23_gpio_pu_pin: pinmux_P9_23_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a1.gpio1_17 */
+	P9_23_gpio_pd_pin: pinmux_P9_23_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a1.gpio1_17 */
+	P9_23_gpio_input_pin: pinmux_P9_23_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a1.gpio1_17 */
+	P9_23_pwm_pin: pinmux_P9_23_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a1.ehrpwm0_synco */
+
+	/* P9_24 (ZCZ ball D15) gpio0_15 */
+	P9_24_default_pin: pinmux_P9_24_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_txd.gpio0_15 */
+	P9_24_gpio_pin: pinmux_P9_24_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_txd.gpio0_15 */
+	P9_24_gpio_pu_pin: pinmux_P9_24_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_txd.gpio0_15 */
+	P9_24_gpio_pd_pin: pinmux_P9_24_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_txd.gpio0_15 */
+	P9_24_gpio_input_pin: pinmux_P9_24_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE7) >; };			/* uart1_txd.gpio0_15 */
+	P9_24_uart_pin: pinmux_P9_24_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart1_txd.uart1_txd */
+	P9_24_can_pin: pinmux_P9_24_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT_PULLUP | MUX_MODE2) >; };		/* uart1_txd.dcan1_rx */
+	P9_24_i2c_pin: pinmux_P9_24_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_txd.i2c1_scl */
+	P9_24_pru_uart_pin: pinmux_P9_24_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_txd.pr1_uart0_txd */
+	P9_24_pruin_pin: pinmux_P9_24_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE6) >; };			/* uart1_txd.pru0_in16 */
+
+	/* P9_25 (ZCZ ball A14) audio */
+	P9_25_default_pin: pinmux_P9_25_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_gpio_pin: pinmux_P9_25_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_gpio_pu_pin: pinmux_P9_25_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_gpio_pd_pin: pinmux_P9_25_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_gpio_input_pin: pinmux_P9_25_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_qep_pin: pinmux_P9_25_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_ahclkx.eqep0_strobe */
+	P9_25_pruout_pin: pinmux_P9_25_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_ahclkx.pru0_out7 */
+	P9_25_pruin_pin: pinmux_P9_25_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_ahclkx.pru0_in7 */
+
+	/* P9_26 (ZCZ ball D16) gpio0_14 */
+	P9_26_default_pin: pinmux_P9_26_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_rxd.gpio0_14 */
+	P9_26_gpio_pin: pinmux_P9_26_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_rxd.gpio0_14 */
+	P9_26_gpio_pu_pin: pinmux_P9_26_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_rxd.gpio0_14 */
+	P9_26_gpio_pd_pin: pinmux_P9_26_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_rxd.gpio0_14 */
+	P9_26_gpio_input_pin: pinmux_P9_26_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE7) >; };			/* uart1_rxd.gpio0_14 */
+	P9_26_uart_pin: pinmux_P9_26_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart1_rxd.uart1_rxd */
+	P9_26_can_pin: pinmux_P9_26_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | MUX_MODE2) >; };		/* uart1_rxd.dcan1_tx */
+	P9_26_i2c_pin: pinmux_P9_26_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rxd.i2c1_sda */
+	P9_26_pru_uart_pin: pinmux_P9_26_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_rxd.pr1_uart0_rxd */
+	P9_26_pruin_pin: pinmux_P9_26_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE6) >; };			/* uart1_rxd.pru1_in16 */
+
+	/* P9_27 (ZCZ ball C13) gpio3_19 */
+	P9_27_default_pin: pinmux_P9_27_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsr.gpio3_19 */
+	P9_27_gpio_pin: pinmux_P9_27_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_fsr.gpio3_19 */
+	P9_27_gpio_pu_pin: pinmux_P9_27_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsr.gpio3_19 */
+	P9_27_gpio_pd_pin: pinmux_P9_27_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsr.gpio3_19 */
+	P9_27_gpio_input_pin: pinmux_P9_27_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_fsr.gpio3_19 */
+	P9_27_qep_pin: pinmux_P9_27_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_fsr.eqep0b_in */
+	P9_27_pruout_pin: pinmux_P9_27_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_fsr.pru0_out5 */
+	P9_27_pruin_pin: pinmux_P9_27_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_fsr.pru0_in5 */
+
+	/* P9_28 (ZCZ ball C12) audio */
+	P9_28_default_pin: pinmux_P9_28_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_gpio_pin: pinmux_P9_28_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_gpio_pu_pin: pinmux_P9_28_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_gpio_pd_pin: pinmux_P9_28_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_gpio_input_pin: pinmux_P9_28_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_pwm_pin: pinmux_P9_28_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_ahclkr.ehrpwm0_synci */
+	P9_28_spi_cs_pin: pinmux_P9_28_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_ahclkr.spi1_cs0 */
+	P9_28_pwm2_pin: pinmux_P9_28_pwm2_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* mcasp0_ahclkr.ecap2_in_pwm2_out */
+	P9_28_pruout_pin: pinmux_P9_28_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_ahclkr.pru0_out3 */
+	P9_28_pruin_pin: pinmux_P9_28_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_ahclkr.pru0_in3 */
+
+	/* P9_29 (ZCZ ball B13) audio */
+	P9_29_default_pin: pinmux_P9_29_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsx.gpio3_15 */
+	P9_29_gpio_pin: pinmux_P9_29_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_fsx.gpio3_15 */
+	P9_29_gpio_pu_pin: pinmux_P9_29_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsx.gpio3_15 */
+	P9_29_gpio_pd_pin: pinmux_P9_29_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsx.gpio3_15 */
+	P9_29_gpio_input_pin: pinmux_P9_29_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_fsx.gpio3_15 */
+	P9_29_pwm_pin: pinmux_P9_29_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_fsx.ehrpwm0b */
+	P9_29_spi_pin: pinmux_P9_29_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_fsx.spi1_d0 */
+	P9_29_pruout_pin: pinmux_P9_29_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_fsx.pru0_out1 */
+	P9_29_pruin_pin: pinmux_P9_29_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_fsx.pru0_in1 */
+
+	/* P9_30 (ZCZ ball D12) gpio3_16 */
+	P9_30_default_pin: pinmux_P9_30_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr0.gpio3_16 */
+	P9_30_gpio_pin: pinmux_P9_30_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_axr0.gpio3_16 */
+	P9_30_gpio_pu_pin: pinmux_P9_30_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr0.gpio3_16 */
+	P9_30_gpio_pd_pin: pinmux_P9_30_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr0.gpio3_16 */
+	P9_30_gpio_input_pin: pinmux_P9_30_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_axr0.gpio3_16 */
+	P9_30_pwm_pin: pinmux_P9_30_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_axr0.ehrpwm0_tripzone_input */
+	P9_30_spi_pin: pinmux_P9_30_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_axr0.spi1_d1 */
+	P9_30_pruout_pin: pinmux_P9_30_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_axr0.pru0_out2 */
+	P9_30_pruin_pin: pinmux_P9_30_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_axr0.pru0_in2 */
+
+	/* P9_31 (ZCZ ball A13) audio */
+	P9_31_default_pin: pinmux_P9_31_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkx.gpio3_14 */
+	P9_31_gpio_pin: pinmux_P9_31_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_aclkx.gpio3_14 */
+	P9_31_gpio_pu_pin: pinmux_P9_31_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkx.gpio3_14 */
+	P9_31_gpio_pd_pin: pinmux_P9_31_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkx.gpio3_14 */
+	P9_31_gpio_input_pin: pinmux_P9_31_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_aclkx.gpio3_14 */
+	P9_31_pwm_pin: pinmux_P9_31_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_aclkx.ehrpwm0a */
+	P9_31_spi_sclk_pin: pinmux_P9_31_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_aclkx.spi1_sclk */
+	P9_31_pruout_pin: pinmux_P9_31_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_aclkx.pru0_out0 */
+	P9_31_pruin_pin: pinmux_P9_31_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_aclkx.pru0_in0 */
+
+	/* P9_32                VADC */
+
+	/* P9_33 (ZCZ ball C8)  AIN4         */
+
+	/* P9_34                AGND */
+
+	/* P9_35 (ZCZ ball A8)  AIN6         */
+
+	/* P9_36 (ZCZ ball B8)  AIN5         */
+
+	/* P9_37 (ZCZ ball B7)  AIN2         */
+
+	/* P9_38 (ZCZ ball A7)  AIN3         */
+
+	/* P9_39 (ZCZ ball B6)  AIN0         */
+
+	/* P9_40 (ZCZ ball C7)  AIN1         */
+
+	/* P9_41 (ZCZ ball D14) gpio0_20 */
+	P9_41_default_pin: pinmux_P9_41_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P9_41_gpio_pin: pinmux_P9_41_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* xdma_event_intr1.gpio0_20 */
+	P9_41_gpio_pu_pin: pinmux_P9_41_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P9_41_gpio_pd_pin: pinmux_P9_41_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P9_41_gpio_input_pin: pinmux_P9_41_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE7) >; };			/* xdma_event_intr1.gpio0_20 */
+	P9_41_timer_pin: pinmux_P9_41_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* xdma_event_intr1.timer7 */
+	P9_41_pruin_pin: pinmux_P9_41_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE5) >; };			/* xdma_event_intr1.pru0_in16 */
+
+	/* P9_41.1 */
+	/* P9_91 (ZCZ ball D13) gpio3_20 */
+	P9_91_default_pin: pinmux_P9_91_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr1.gpio3_20 */
+	P9_91_gpio_pin: pinmux_P9_91_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_axr1.gpio3_20 */
+	P9_91_gpio_pu_pin: pinmux_P9_91_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr1.gpio3_20 */
+	P9_91_gpio_pd_pin: pinmux_P9_91_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr1.gpio3_20 */
+	P9_91_gpio_input_pin: pinmux_P9_91_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_axr1.gpio3_20 */
+	P9_91_qep_pin: pinmux_P9_91_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_axr1.eqep0_index */
+	P9_91_pruout_pin: pinmux_P9_91_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_axr1.pru0_out6 */
+	P9_91_pruin_pin: pinmux_P9_91_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_axr1.pru0_in6 */
+
+	/* P9_42 (ZCZ ball C18) gpio0_7 */
+	P9_42_default_pin: pinmux_P9_42_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_gpio_pin: pinmux_P9_42_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_gpio_pu_pin: pinmux_P9_42_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_gpio_pd_pin: pinmux_P9_42_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_gpio_input_pin: pinmux_P9_42_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_INPUT | MUX_MODE7) >; };			/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_pwm_pin: pinmux_P9_42_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE0) >; };	/* eCAP0_in_PWM0_out.ecap0_in_pwm0_out */
+	P9_42_uart_pin: pinmux_P9_42_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* eCAP0_in_PWM0_out.uart3_txd */
+	P9_42_spi_cs_pin: pinmux_P9_42_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* eCAP0_in_PWM0_out.spi1_cs1 */
+	P9_42_pru_ecap_pin: pinmux_P9_42_pru_ecap_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* eCAP0_in_PWM0_out.pr1_ecap0_ecap_capin_apwm_o */
+	P9_42_spi_sclk_pin: pinmux_P9_42_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* eCAP0_in_PWM0_out.spi1_sclk */
+
+	/* P9_42.1 */
+	/* P9_92 (ZCZ ball B12) gpio3_18 */
+	P9_92_default_pin: pinmux_P9_92_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkr.gpio3_18 */
+	P9_92_gpio_pin: pinmux_P9_92_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_aclkr.gpio3_18 */
+	P9_92_gpio_pu_pin: pinmux_P9_92_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkr.gpio3_18 */
+	P9_92_gpio_pd_pin: pinmux_P9_92_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkr.gpio3_18 */
+	P9_92_gpio_input_pin: pinmux_P9_92_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_aclkr.gpio3_18 */
+	P9_92_qep_pin: pinmux_P9_92_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_aclkr.eqep0a_in */
+	P9_92_pruout_pin: pinmux_P9_92_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_aclkr.pru0_out4 */
+	P9_92_pruin_pin: pinmux_P9_92_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_aclkr.pru0_in4 */
+
+	/* P9_43                GND */
+
+	/* P9_44                GND */
+
+	/* P9_45                GND */
+
+	/* P9_46                GND */
+};
+
+&i2c1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	clock-frequency = <100000>;
+	symlink = "bone/i2c/1";
+};
+
+&i2c2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	clock-frequency = <100000>;
+	symlink = "bone/i2c/2";
+};
+
+&uart1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/1";
+};
+
+&uart2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/2";
+};
+
+&uart3 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/3";
+};
+
+&uart4 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/4";
+};
+
+&uart5 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/5";
+};
+
+&dcan0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/can/0";
+};
+
+&dcan1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/can/1";
+};
+
+&eqep0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/eqep/0";
+};
+
+&eqep1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/eqep/1";
+};
+
+&eqep2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/eqep/2";
+};
+
+&epwmss0 {
+	status = "okay";
+};
+
+&epwmss1 {
+	status = "okay";
+};
+
+&epwmss2 {
+	status = "okay";
+};
+
+&ehrpwm0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ehrpwm1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ehrpwm2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ecap0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ecap1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ecap2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&spi0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	channel@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/0.0";
+
+		reg = <0>;
+		spi-max-frequency = <16000000>;
+		spi-cpha;
+	};
+
+	channel@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/0.1";
+
+		reg = <1>;
+		spi-max-frequency = <16000000>;
+	};
+};
+
+&spi1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	channel@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/1.0";
+
+		reg = <0>;
+		spi-max-frequency = <16000000>;
+		spi-cpha;
+	};
+
+	channel@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/1.1";
+
+		reg = <1>;
+		spi-max-frequency = <16000000>;
+	};
+};
+
+/**********************************************************************/
+/* Pin Multiplex Helpers                                              */
+/*                                                                    */
+/* These provide userspace runtime pin configuration for the          */
+/* BeagleBone cape expansion headers                                  */
+/**********************************************************************/
+
+&ocp {
+	/************************/
+	/* P8 Header */
+	/************************/
+
+	/* P8_01                GND */
+
+	/* P8_02                GND */
+
+
+	/* P8_03 (ZCZ ball R9) emmc */
+	P8_03_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_03_default_pin>;
+		pinctrl-1 = <&P8_03_gpio_pin>;
+		pinctrl-2 = <&P8_03_gpio_pu_pin>;
+		pinctrl-3 = <&P8_03_gpio_pd_pin>;
+		pinctrl-4 = <&P8_03_gpio_input_pin>;
+	};
+
+	/* P8_04 (ZCZ ball T9) emmc */
+	P8_04_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_04_default_pin>;
+		pinctrl-1 = <&P8_04_gpio_pin>;
+		pinctrl-2 = <&P8_04_gpio_pu_pin>;
+		pinctrl-3 = <&P8_04_gpio_pd_pin>;
+		pinctrl-4 = <&P8_04_gpio_input_pin>;
+	};
+
+	/* P8_05 (ZCZ ball R8) emmc */
+	P8_05_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_05_default_pin>;
+		pinctrl-1 = <&P8_05_gpio_pin>;
+		pinctrl-2 = <&P8_05_gpio_pu_pin>;
+		pinctrl-3 = <&P8_05_gpio_pd_pin>;
+		pinctrl-4 = <&P8_05_gpio_input_pin>;
+	};
+
+	/* P8_06 (ZCZ ball T8) emmc */
+	P8_06_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_06_default_pin>;
+		pinctrl-1 = <&P8_06_gpio_pin>;
+		pinctrl-2 = <&P8_06_gpio_pu_pin>;
+		pinctrl-3 = <&P8_06_gpio_pd_pin>;
+		pinctrl-4 = <&P8_06_gpio_input_pin>;
+	};
+
+	/* P8_07 (ZCZ ball R7) */
+	P8_07_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+		pinctrl-0 = <&P8_07_default_pin>;
+		pinctrl-1 = <&P8_07_gpio_pin>;
+		pinctrl-2 = <&P8_07_gpio_pu_pin>;
+		pinctrl-3 = <&P8_07_gpio_pd_pin>;
+		pinctrl-4 = <&P8_07_gpio_input_pin>;
+		pinctrl-5 = <&P8_07_timer_pin>;
+	};
+
+	/* P8_08 (ZCZ ball T7) */
+	P8_08_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+		pinctrl-0 = <&P8_08_default_pin>;
+		pinctrl-1 = <&P8_08_gpio_pin>;
+		pinctrl-2 = <&P8_08_gpio_pu_pin>;
+		pinctrl-3 = <&P8_08_gpio_pd_pin>;
+		pinctrl-4 = <&P8_08_gpio_input_pin>;
+		pinctrl-5 = <&P8_08_timer_pin>;
+	};
+
+	/* P8_09 (ZCZ ball T6) */
+	P8_09_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+		pinctrl-0 = <&P8_09_default_pin>;
+		pinctrl-1 = <&P8_09_gpio_pin>;
+		pinctrl-2 = <&P8_09_gpio_pu_pin>;
+		pinctrl-3 = <&P8_09_gpio_pd_pin>;
+		pinctrl-4 = <&P8_09_gpio_input_pin>;
+		pinctrl-5 = <&P8_09_timer_pin>;
+	};
+
+	/* P8_10 (ZCZ ball U6) */
+	P8_10_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+		pinctrl-0 = <&P8_10_default_pin>;
+		pinctrl-1 = <&P8_10_gpio_pin>;
+		pinctrl-2 = <&P8_10_gpio_pu_pin>;
+		pinctrl-3 = <&P8_10_gpio_pd_pin>;
+		pinctrl-4 = <&P8_10_gpio_input_pin>;
+		pinctrl-5 = <&P8_10_timer_pin>;
+	};
+
+	/* P8_11 (ZCZ ball R12) */
+	P8_11_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+		pinctrl-0 = <&P8_11_default_pin>;
+		pinctrl-1 = <&P8_11_gpio_pin>;
+		pinctrl-2 = <&P8_11_gpio_pu_pin>;
+		pinctrl-3 = <&P8_11_gpio_pd_pin>;
+		pinctrl-4 = <&P8_11_gpio_input_pin>;
+		pinctrl-5 = <&P8_11_qep_pin>;
+		pinctrl-6 = <&P8_11_pruout_pin>;
+	};
+
+	/* P8_12 (ZCZ ball T12) */
+	P8_12_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+		pinctrl-0 = <&P8_12_default_pin>;
+		pinctrl-1 = <&P8_12_gpio_pin>;
+		pinctrl-2 = <&P8_12_gpio_pu_pin>;
+		pinctrl-3 = <&P8_12_gpio_pd_pin>;
+		pinctrl-4 = <&P8_12_gpio_input_pin>;
+		pinctrl-5 = <&P8_12_qep_pin>;
+		pinctrl-6 = <&P8_12_pruout_pin>;
+	};
+
+	/* P8_13 (ZCZ ball T10) */
+	P8_13_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_13_default_pin>;
+		pinctrl-1 = <&P8_13_gpio_pin>;
+		pinctrl-2 = <&P8_13_gpio_pu_pin>;
+		pinctrl-3 = <&P8_13_gpio_pd_pin>;
+		pinctrl-4 = <&P8_13_gpio_input_pin>;
+		pinctrl-5 = <&P8_13_pwm_pin>;
+	};
+
+	/* P8_14 (ZCZ ball T11) */
+	P8_14_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_14_default_pin>;
+		pinctrl-1 = <&P8_14_gpio_pin>;
+		pinctrl-2 = <&P8_14_gpio_pu_pin>;
+		pinctrl-3 = <&P8_14_gpio_pd_pin>;
+		pinctrl-4 = <&P8_14_gpio_input_pin>;
+		pinctrl-5 = <&P8_14_pwm_pin>;
+	};
+
+	/* P8_15 (ZCZ ball U13) */
+	P8_15_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pru_ecap", "pruin";
+		pinctrl-0 = <&P8_15_default_pin>;
+		pinctrl-1 = <&P8_15_gpio_pin>;
+		pinctrl-2 = <&P8_15_gpio_pu_pin>;
+		pinctrl-3 = <&P8_15_gpio_pd_pin>;
+		pinctrl-4 = <&P8_15_gpio_input_pin>;
+		pinctrl-5 = <&P8_15_qep_pin>;
+		pinctrl-6 = <&P8_15_pru_ecap_pin>;
+		pinctrl-7 = <&P8_15_pruin_pin>;
+	};
+
+	/* P8_16 (ZCZ ball V13) */
+	P8_16_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruin";
+		pinctrl-0 = <&P8_16_default_pin>;
+		pinctrl-1 = <&P8_16_gpio_pin>;
+		pinctrl-2 = <&P8_16_gpio_pu_pin>;
+		pinctrl-3 = <&P8_16_gpio_pd_pin>;
+		pinctrl-4 = <&P8_16_gpio_input_pin>;
+		pinctrl-5 = <&P8_16_qep_pin>;
+		pinctrl-6 = <&P8_16_pruin_pin>;
+	};
+
+	/* P8_17 (ZCZ ball U12) */
+	P8_17_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_17_default_pin>;
+		pinctrl-1 = <&P8_17_gpio_pin>;
+		pinctrl-2 = <&P8_17_gpio_pu_pin>;
+		pinctrl-3 = <&P8_17_gpio_pd_pin>;
+		pinctrl-4 = <&P8_17_gpio_input_pin>;
+		pinctrl-5 = <&P8_17_pwm_pin>;
+	};
+
+	/* P8_18 (ZCZ ball V12) */
+	P8_18_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_18_default_pin>;
+		pinctrl-1 = <&P8_18_gpio_pin>;
+		pinctrl-2 = <&P8_18_gpio_pu_pin>;
+		pinctrl-3 = <&P8_18_gpio_pd_pin>;
+		pinctrl-4 = <&P8_18_gpio_input_pin>;
+	};
+
+	/* P8_19 (ZCZ ball U10) */
+	P8_19_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_19_default_pin>;
+		pinctrl-1 = <&P8_19_gpio_pin>;
+		pinctrl-2 = <&P8_19_gpio_pu_pin>;
+		pinctrl-3 = <&P8_19_gpio_pd_pin>;
+		pinctrl-4 = <&P8_19_gpio_input_pin>;
+		pinctrl-5 = <&P8_19_pwm_pin>;
+	};
+
+	/* P8_20 (ZCZ ball V9) emmc */
+	P8_20_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_20_default_pin>;
+		pinctrl-1 = <&P8_20_gpio_pin>;
+		pinctrl-2 = <&P8_20_gpio_pu_pin>;
+		pinctrl-3 = <&P8_20_gpio_pd_pin>;
+		pinctrl-4 = <&P8_20_gpio_input_pin>;
+		pinctrl-5 = <&P8_20_pruout_pin>;
+		pinctrl-6 = <&P8_20_pruin_pin>;
+	};
+
+	/* P8_21 (ZCZ ball U9) emmc */
+	P8_21_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_21_default_pin>;
+		pinctrl-1 = <&P8_21_gpio_pin>;
+		pinctrl-2 = <&P8_21_gpio_pu_pin>;
+		pinctrl-3 = <&P8_21_gpio_pd_pin>;
+		pinctrl-4 = <&P8_21_gpio_input_pin>;
+		pinctrl-5 = <&P8_21_pruout_pin>;
+		pinctrl-6 = <&P8_21_pruin_pin>;
+	};
+
+	/* P8_22 (ZCZ ball V8) emmc */
+	P8_22_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_22_default_pin>;
+		pinctrl-1 = <&P8_22_gpio_pin>;
+		pinctrl-2 = <&P8_22_gpio_pu_pin>;
+		pinctrl-3 = <&P8_22_gpio_pd_pin>;
+		pinctrl-4 = <&P8_22_gpio_input_pin>;
+	};
+
+	/* P8_23 (ZCZ ball U8) emmc */
+	P8_23_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_23_default_pin>;
+		pinctrl-1 = <&P8_23_gpio_pin>;
+		pinctrl-2 = <&P8_23_gpio_pu_pin>;
+		pinctrl-3 = <&P8_23_gpio_pd_pin>;
+		pinctrl-4 = <&P8_23_gpio_input_pin>;
+	};
+
+	/* P8_24 (ZCZ ball V7) emmc */
+	P8_24_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_24_default_pin>;
+		pinctrl-1 = <&P8_24_gpio_pin>;
+		pinctrl-2 = <&P8_24_gpio_pu_pin>;
+		pinctrl-3 = <&P8_24_gpio_pd_pin>;
+		pinctrl-4 = <&P8_24_gpio_input_pin>;
+	};
+
+	/* P8_25 (ZCZ ball U7) emmc */
+	P8_25_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_25_default_pin>;
+		pinctrl-1 = <&P8_25_gpio_pin>;
+		pinctrl-2 = <&P8_25_gpio_pu_pin>;
+		pinctrl-3 = <&P8_25_gpio_pd_pin>;
+		pinctrl-4 = <&P8_25_gpio_input_pin>;
+	};
+
+	/* P8_26 (ZCZ ball V6) */
+	P8_26_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_26_default_pin>;
+		pinctrl-1 = <&P8_26_gpio_pin>;
+		pinctrl-2 = <&P8_26_gpio_pu_pin>;
+		pinctrl-3 = <&P8_26_gpio_pd_pin>;
+		pinctrl-4 = <&P8_26_gpio_input_pin>;
+	};
+
+	/* P8_27 (ZCZ ball U5) hdmi */
+	P8_27_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_27_default_pin>;
+		pinctrl-1 = <&P8_27_gpio_pin>;
+		pinctrl-2 = <&P8_27_gpio_pu_pin>;
+		pinctrl-3 = <&P8_27_gpio_pd_pin>;
+		pinctrl-4 = <&P8_27_gpio_input_pin>;
+		pinctrl-5 = <&P8_27_pruout_pin>;
+		pinctrl-6 = <&P8_27_pruin_pin>;
+	};
+
+	/* P8_28 (ZCZ ball V5) hdmi */
+	P8_28_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_28_default_pin>;
+		pinctrl-1 = <&P8_28_gpio_pin>;
+		pinctrl-2 = <&P8_28_gpio_pu_pin>;
+		pinctrl-3 = <&P8_28_gpio_pd_pin>;
+		pinctrl-4 = <&P8_28_gpio_input_pin>;
+		pinctrl-5 = <&P8_28_pruout_pin>;
+		pinctrl-6 = <&P8_28_pruin_pin>;
+	};
+
+	/* P8_29 (ZCZ ball R5) hdmi */
+	P8_29_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_29_default_pin>;
+		pinctrl-1 = <&P8_29_gpio_pin>;
+		pinctrl-2 = <&P8_29_gpio_pu_pin>;
+		pinctrl-3 = <&P8_29_gpio_pd_pin>;
+		pinctrl-4 = <&P8_29_gpio_input_pin>;
+		pinctrl-5 = <&P8_29_pruout_pin>;
+		pinctrl-6 = <&P8_29_pruin_pin>;
+	};
+
+	/* P8_30 (ZCZ ball R6) hdmi */
+	P8_30_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_30_default_pin>;
+		pinctrl-1 = <&P8_30_gpio_pin>;
+		pinctrl-2 = <&P8_30_gpio_pu_pin>;
+		pinctrl-3 = <&P8_30_gpio_pd_pin>;
+		pinctrl-4 = <&P8_30_gpio_input_pin>;
+		pinctrl-5 = <&P8_30_pruout_pin>;
+		pinctrl-6 = <&P8_30_pruin_pin>;
+	};
+
+	/* P8_31 (ZCZ ball V4) hdmi */
+	P8_31_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "qep";
+		pinctrl-0 = <&P8_31_default_pin>;
+		pinctrl-1 = <&P8_31_gpio_pin>;
+		pinctrl-2 = <&P8_31_gpio_pu_pin>;
+		pinctrl-3 = <&P8_31_gpio_pd_pin>;
+		pinctrl-4 = <&P8_31_gpio_input_pin>;
+		pinctrl-5 = <&P8_31_uart_pin>;
+		pinctrl-6 = <&P8_31_qep_pin>;
+	};
+
+	/* P8_32 (ZCZ ball T5) hdmi */
+	P8_32_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+		pinctrl-0 = <&P8_32_default_pin>;
+		pinctrl-1 = <&P8_32_gpio_pin>;
+		pinctrl-2 = <&P8_32_gpio_pu_pin>;
+		pinctrl-3 = <&P8_32_gpio_pd_pin>;
+		pinctrl-4 = <&P8_32_gpio_input_pin>;
+		pinctrl-5 = <&P8_32_qep_pin>;
+	};
+
+	/* P8_33 (ZCZ ball V3) hdmi */
+	P8_33_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+		pinctrl-0 = <&P8_33_default_pin>;
+		pinctrl-1 = <&P8_33_gpio_pin>;
+		pinctrl-2 = <&P8_33_gpio_pu_pin>;
+		pinctrl-3 = <&P8_33_gpio_pd_pin>;
+		pinctrl-4 = <&P8_33_gpio_input_pin>;
+		pinctrl-5 = <&P8_33_qep_pin>;
+	};
+
+	/* P8_34 (ZCZ ball U4) hdmi */
+	P8_34_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_34_default_pin>;
+		pinctrl-1 = <&P8_34_gpio_pin>;
+		pinctrl-2 = <&P8_34_gpio_pu_pin>;
+		pinctrl-3 = <&P8_34_gpio_pd_pin>;
+		pinctrl-4 = <&P8_34_gpio_input_pin>;
+		pinctrl-5 = <&P8_34_pwm_pin>;
+	};
+
+	/* P8_35 (ZCZ ball V2) hdmi */
+	P8_35_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+		pinctrl-0 = <&P8_35_default_pin>;
+		pinctrl-1 = <&P8_35_gpio_pin>;
+		pinctrl-2 = <&P8_35_gpio_pu_pin>;
+		pinctrl-3 = <&P8_35_gpio_pd_pin>;
+		pinctrl-4 = <&P8_35_gpio_input_pin>;
+		pinctrl-5 = <&P8_35_qep_pin>;
+	};
+
+	/* P8_36 (ZCZ ball U3) hdmi */
+	P8_36_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_36_default_pin>;
+		pinctrl-1 = <&P8_36_gpio_pin>;
+		pinctrl-2 = <&P8_36_gpio_pu_pin>;
+		pinctrl-3 = <&P8_36_gpio_pd_pin>;
+		pinctrl-4 = <&P8_36_gpio_input_pin>;
+		pinctrl-5 = <&P8_36_pwm_pin>;
+	};
+
+	/* P8_37 (ZCZ ball U1) hdmi */
+	P8_37_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "pwm";
+		pinctrl-0 = <&P8_37_default_pin>;
+		pinctrl-1 = <&P8_37_gpio_pin>;
+		pinctrl-2 = <&P8_37_gpio_pu_pin>;
+		pinctrl-3 = <&P8_37_gpio_pd_pin>;
+		pinctrl-4 = <&P8_37_gpio_input_pin>;
+		pinctrl-5 = <&P8_37_uart_pin>;
+		pinctrl-6 = <&P8_37_pwm_pin>;
+	};
+
+	/* P8_38 (ZCZ ball U2) hdmi */
+	P8_38_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "pwm";
+		pinctrl-0 = <&P8_38_default_pin>;
+		pinctrl-1 = <&P8_38_gpio_pin>;
+		pinctrl-2 = <&P8_38_gpio_pu_pin>;
+		pinctrl-3 = <&P8_38_gpio_pd_pin>;
+		pinctrl-4 = <&P8_38_gpio_input_pin>;
+		pinctrl-5 = <&P8_38_uart_pin>;
+		pinctrl-6 = <&P8_38_pwm_pin>;
+	};
+
+	/* P8_39 (ZCZ ball T3) hdmi */
+	P8_39_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P8_39_default_pin>;
+		pinctrl-1 = <&P8_39_gpio_pin>;
+		pinctrl-2 = <&P8_39_gpio_pu_pin>;
+		pinctrl-3 = <&P8_39_gpio_pd_pin>;
+		pinctrl-4 = <&P8_39_gpio_input_pin>;
+		pinctrl-5 = <&P8_39_qep_pin>;
+		pinctrl-6 = <&P8_39_pruout_pin>;
+		pinctrl-7 = <&P8_39_pruin_pin>;
+	};
+
+	/* P8_40 (ZCZ ball T4) hdmi */
+	P8_40_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P8_40_default_pin>;
+		pinctrl-1 = <&P8_40_gpio_pin>;
+		pinctrl-2 = <&P8_40_gpio_pu_pin>;
+		pinctrl-3 = <&P8_40_gpio_pd_pin>;
+		pinctrl-4 = <&P8_40_gpio_input_pin>;
+		pinctrl-5 = <&P8_40_qep_pin>;
+		pinctrl-6 = <&P8_40_pruout_pin>;
+		pinctrl-7 = <&P8_40_pruin_pin>;
+	};
+
+	/* P8_41 (ZCZ ball T1) hdmi */
+	P8_41_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P8_41_default_pin>;
+		pinctrl-1 = <&P8_41_gpio_pin>;
+		pinctrl-2 = <&P8_41_gpio_pu_pin>;
+		pinctrl-3 = <&P8_41_gpio_pd_pin>;
+		pinctrl-4 = <&P8_41_gpio_input_pin>;
+		pinctrl-5 = <&P8_41_qep_pin>;
+		pinctrl-6 = <&P8_41_pruout_pin>;
+		pinctrl-7 = <&P8_41_pruin_pin>;
+	};
+
+	/* P8_42 (ZCZ ball T2) hdmi */
+	P8_42_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P8_42_default_pin>;
+		pinctrl-1 = <&P8_42_gpio_pin>;
+		pinctrl-2 = <&P8_42_gpio_pu_pin>;
+		pinctrl-3 = <&P8_42_gpio_pd_pin>;
+		pinctrl-4 = <&P8_42_gpio_input_pin>;
+		pinctrl-5 = <&P8_42_qep_pin>;
+		pinctrl-6 = <&P8_42_pruout_pin>;
+		pinctrl-7 = <&P8_42_pruin_pin>;
+	};
+
+	/* P8_43 (ZCZ ball R3) hdmi */
+	P8_43_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P8_43_default_pin>;
+		pinctrl-1 = <&P8_43_gpio_pin>;
+		pinctrl-2 = <&P8_43_gpio_pu_pin>;
+		pinctrl-3 = <&P8_43_gpio_pd_pin>;
+		pinctrl-4 = <&P8_43_gpio_input_pin>;
+		pinctrl-5 = <&P8_43_pwm_pin>;
+		pinctrl-6 = <&P8_43_pruout_pin>;
+		pinctrl-7 = <&P8_43_pruin_pin>;
+	};
+
+	/* P8_44 (ZCZ ball R4) hdmi */
+	P8_44_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P8_44_default_pin>;
+		pinctrl-1 = <&P8_44_gpio_pin>;
+		pinctrl-2 = <&P8_44_gpio_pu_pin>;
+		pinctrl-3 = <&P8_44_gpio_pd_pin>;
+		pinctrl-4 = <&P8_44_gpio_input_pin>;
+		pinctrl-5 = <&P8_44_pwm_pin>;
+		pinctrl-6 = <&P8_44_pruout_pin>;
+		pinctrl-7 = <&P8_44_pruin_pin>;
+	};
+
+	/* P8_45 (ZCZ ball R1) hdmi */
+	P8_45_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P8_45_default_pin>;
+		pinctrl-1 = <&P8_45_gpio_pin>;
+		pinctrl-2 = <&P8_45_gpio_pu_pin>;
+		pinctrl-3 = <&P8_45_gpio_pd_pin>;
+		pinctrl-4 = <&P8_45_gpio_input_pin>;
+		pinctrl-5 = <&P8_45_pwm_pin>;
+		pinctrl-6 = <&P8_45_pruout_pin>;
+		pinctrl-7 = <&P8_45_pruin_pin>;
+	};
+
+	/* P8_46 (ZCZ ball R2) hdmi */
+	P8_46_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P8_46_default_pin>;
+		pinctrl-1 = <&P8_46_gpio_pin>;
+		pinctrl-2 = <&P8_46_gpio_pu_pin>;
+		pinctrl-3 = <&P8_46_gpio_pd_pin>;
+		pinctrl-4 = <&P8_46_gpio_input_pin>;
+		pinctrl-5 = <&P8_46_pwm_pin>;
+		pinctrl-6 = <&P8_46_pruout_pin>;
+		pinctrl-7 = <&P8_46_pruin_pin>;
+	};
+
+	/************************/
+	/* P9 Header */
+	/************************/
+
+	/* P9_01                GND */
+
+	/* P9_02                GND */
+
+	/* P9_03                3V3 */
+
+	/* P9_04                3V3 */
+
+	/* P9_05                VDD_5V */
+
+	/* P9_06                VDD_5V */
+
+	/* P9_07                SYS_5V */
+
+	/* P9_08                SYS_5V */
+
+	/* P9_09                PWR_BUT */
+
+	/* P9_10                RSTn */
+
+	/* P9_11 (ZCZ ball T17) */
+	P9_11_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+		pinctrl-0 = <&P9_11_default_pin>;
+		pinctrl-1 = <&P9_11_gpio_pin>;
+		pinctrl-2 = <&P9_11_gpio_pu_pin>;
+		pinctrl-3 = <&P9_11_gpio_pd_pin>;
+		pinctrl-4 = <&P9_11_gpio_input_pin>;
+		pinctrl-5 = <&P9_11_uart_pin>;
+	};
+
+	/* P9_12 (ZCZ ball U18) */
+	P9_12_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P9_12_default_pin>;
+		pinctrl-1 = <&P9_12_gpio_pin>;
+		pinctrl-2 = <&P9_12_gpio_pu_pin>;
+		pinctrl-3 = <&P9_12_gpio_pd_pin>;
+		pinctrl-4 = <&P9_12_gpio_input_pin>;
+	};
+
+	/* P9_13 (ZCZ ball U17) */
+	P9_13_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+		pinctrl-0 = <&P9_13_default_pin>;
+		pinctrl-1 = <&P9_13_gpio_pin>;
+		pinctrl-2 = <&P9_13_gpio_pu_pin>;
+		pinctrl-3 = <&P9_13_gpio_pd_pin>;
+		pinctrl-4 = <&P9_13_gpio_input_pin>;
+		pinctrl-5 = <&P9_13_uart_pin>;
+	};
+
+	/* P9_14 (ZCZ ball U14) */
+	P9_14_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P9_14_default_pin>;
+		pinctrl-1 = <&P9_14_gpio_pin>;
+		pinctrl-2 = <&P9_14_gpio_pu_pin>;
+		pinctrl-3 = <&P9_14_gpio_pd_pin>;
+		pinctrl-4 = <&P9_14_gpio_input_pin>;
+		pinctrl-5 = <&P9_14_pwm_pin>;
+	};
+
+	/* P9_15 (ZCZ ball R13) */
+	P9_15_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P9_15_default_pin>;
+		pinctrl-1 = <&P9_15_gpio_pin>;
+		pinctrl-2 = <&P9_15_gpio_pu_pin>;
+		pinctrl-3 = <&P9_15_gpio_pd_pin>;
+		pinctrl-4 = <&P9_15_gpio_input_pin>;
+		pinctrl-5 = <&P9_15_pwm_pin>;
+	};
+
+	/* P9_16 (ZCZ ball T14) */
+	P9_16_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P9_16_default_pin>;
+		pinctrl-1 = <&P9_16_gpio_pin>;
+		pinctrl-2 = <&P9_16_gpio_pu_pin>;
+		pinctrl-3 = <&P9_16_gpio_pd_pin>;
+		pinctrl-4 = <&P9_16_gpio_input_pin>;
+		pinctrl-5 = <&P9_16_pwm_pin>;
+	};
+
+	/* P9_17 (ZCZ ball A16) */
+	P9_17_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P9_17_default_pin>;
+		pinctrl-1 = <&P9_17_gpio_pin>;
+		pinctrl-2 = <&P9_17_gpio_pu_pin>;
+		pinctrl-3 = <&P9_17_gpio_pd_pin>;
+		pinctrl-4 = <&P9_17_gpio_input_pin>;
+		pinctrl-5 = <&P9_17_spi_cs_pin>;
+		pinctrl-6 = <&P9_17_i2c_pin>;
+		pinctrl-7 = <&P9_17_pwm_pin>;
+		pinctrl-8 = <&P9_17_pru_uart_pin>;
+	};
+
+	/* P9_18 (ZCZ ball B16) */
+	P9_18_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P9_18_default_pin>;
+		pinctrl-1 = <&P9_18_gpio_pin>;
+		pinctrl-2 = <&P9_18_gpio_pu_pin>;
+		pinctrl-3 = <&P9_18_gpio_pd_pin>;
+		pinctrl-4 = <&P9_18_gpio_input_pin>;
+		pinctrl-5 = <&P9_18_spi_pin>;
+		pinctrl-6 = <&P9_18_i2c_pin>;
+		pinctrl-7 = <&P9_18_pwm_pin>;
+		pinctrl-8 = <&P9_18_pru_uart_pin>;
+	};
+
+	/* P9_19 (ZCZ ball D17) i2c */
+	P9_19_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart", "timer";
+		pinctrl-0 = <&P9_19_default_pin>;
+		pinctrl-1 = <&P9_19_gpio_pin>;
+		pinctrl-2 = <&P9_19_gpio_pu_pin>;
+		pinctrl-3 = <&P9_19_gpio_pd_pin>;
+		pinctrl-4 = <&P9_19_gpio_input_pin>;
+		pinctrl-5 = <&P9_19_spi_cs_pin>;
+		pinctrl-6 = <&P9_19_can_pin>;
+		pinctrl-7 = <&P9_19_i2c_pin>;
+		pinctrl-8 = <&P9_19_pru_uart_pin>;
+		pinctrl-9 = <&P9_19_timer_pin>;
+	};
+
+	/* P9_20 (ZCZ ball D18) i2c */
+	P9_20_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart", "timer";
+		pinctrl-0 = <&P9_20_default_pin>;
+		pinctrl-1 = <&P9_20_gpio_pin>;
+		pinctrl-2 = <&P9_20_gpio_pu_pin>;
+		pinctrl-3 = <&P9_20_gpio_pd_pin>;
+		pinctrl-4 = <&P9_20_gpio_input_pin>;
+		pinctrl-5 = <&P9_20_spi_cs_pin>;
+		pinctrl-6 = <&P9_20_can_pin>;
+		pinctrl-7 = <&P9_20_i2c_pin>;
+		pinctrl-8 = <&P9_20_pru_uart_pin>;
+		pinctrl-9 = <&P9_20_timer_pin>;
+	};
+
+	/* P9_21 (ZCZ ball B17) */
+	P9_21_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "uart", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P9_21_default_pin>;
+		pinctrl-1 = <&P9_21_gpio_pin>;
+		pinctrl-2 = <&P9_21_gpio_pu_pin>;
+		pinctrl-3 = <&P9_21_gpio_pd_pin>;
+		pinctrl-4 = <&P9_21_gpio_input_pin>;
+		pinctrl-5 = <&P9_21_spi_pin>;
+		pinctrl-6 = <&P9_21_uart_pin>;
+		pinctrl-7 = <&P9_21_i2c_pin>;
+		pinctrl-8 = <&P9_21_pwm_pin>;
+		pinctrl-9 = <&P9_21_pru_uart_pin>;
+	};
+
+	/* P9_22 (ZCZ ball A17) */
+	P9_22_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "uart", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P9_22_default_pin>;
+		pinctrl-1 = <&P9_22_gpio_pin>;
+		pinctrl-2 = <&P9_22_gpio_pu_pin>;
+		pinctrl-3 = <&P9_22_gpio_pd_pin>;
+		pinctrl-4 = <&P9_22_gpio_input_pin>;
+		pinctrl-5 = <&P9_22_spi_sclk_pin>;
+		pinctrl-6 = <&P9_22_uart_pin>;
+		pinctrl-7 = <&P9_22_i2c_pin>;
+		pinctrl-8 = <&P9_22_pwm_pin>;
+		pinctrl-9 = <&P9_22_pru_uart_pin>;
+	};
+
+	/* P9_23 (ZCZ ball V14) */
+	P9_23_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P9_23_default_pin>;
+		pinctrl-1 = <&P9_23_gpio_pin>;
+		pinctrl-2 = <&P9_23_gpio_pu_pin>;
+		pinctrl-3 = <&P9_23_gpio_pd_pin>;
+		pinctrl-4 = <&P9_23_gpio_input_pin>;
+		pinctrl-5 = <&P9_23_pwm_pin>;
+	};
+
+	/* P9_24 (ZCZ ball D15) */
+	P9_24_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+		pinctrl-0 = <&P9_24_default_pin>;
+		pinctrl-1 = <&P9_24_gpio_pin>;
+		pinctrl-2 = <&P9_24_gpio_pu_pin>;
+		pinctrl-3 = <&P9_24_gpio_pd_pin>;
+		pinctrl-4 = <&P9_24_gpio_input_pin>;
+		pinctrl-5 = <&P9_24_uart_pin>;
+		pinctrl-6 = <&P9_24_can_pin>;
+		pinctrl-7 = <&P9_24_i2c_pin>;
+		pinctrl-8 = <&P9_24_pru_uart_pin>;
+		pinctrl-9 = <&P9_24_pruin_pin>;
+	};
+
+	/* P9_25 (ZCZ ball A14) audio */
+	P9_25_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P9_25_default_pin>;
+		pinctrl-1 = <&P9_25_gpio_pin>;
+		pinctrl-2 = <&P9_25_gpio_pu_pin>;
+		pinctrl-3 = <&P9_25_gpio_pd_pin>;
+		pinctrl-4 = <&P9_25_gpio_input_pin>;
+		pinctrl-5 = <&P9_25_qep_pin>;
+		pinctrl-6 = <&P9_25_pruout_pin>;
+		pinctrl-7 = <&P9_25_pruin_pin>;
+	};
+
+	/* P9_26 (ZCZ ball D16) */
+	P9_26_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+		pinctrl-0 = <&P9_26_default_pin>;
+		pinctrl-1 = <&P9_26_gpio_pin>;
+		pinctrl-2 = <&P9_26_gpio_pu_pin>;
+		pinctrl-3 = <&P9_26_gpio_pd_pin>;
+		pinctrl-4 = <&P9_26_gpio_input_pin>;
+		pinctrl-5 = <&P9_26_uart_pin>;
+		pinctrl-6 = <&P9_26_can_pin>;
+		pinctrl-7 = <&P9_26_i2c_pin>;
+		pinctrl-8 = <&P9_26_pru_uart_pin>;
+		pinctrl-9 = <&P9_26_pruin_pin>;
+	};
+
+	/* P9_27 (ZCZ ball C13) */
+	P9_27_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P9_27_default_pin>;
+		pinctrl-1 = <&P9_27_gpio_pin>;
+		pinctrl-2 = <&P9_27_gpio_pu_pin>;
+		pinctrl-3 = <&P9_27_gpio_pd_pin>;
+		pinctrl-4 = <&P9_27_gpio_input_pin>;
+		pinctrl-5 = <&P9_27_qep_pin>;
+		pinctrl-6 = <&P9_27_pruout_pin>;
+		pinctrl-7 = <&P9_27_pruin_pin>;
+	};
+
+	/* P9_28 (ZCZ ball C12) audio */
+	P9_28_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "pwm", "pwm2", "pruout", "pruin";
+		pinctrl-0 = <&P9_28_default_pin>;
+		pinctrl-1 = <&P9_28_gpio_pin>;
+		pinctrl-2 = <&P9_28_gpio_pu_pin>;
+		pinctrl-3 = <&P9_28_gpio_pd_pin>;
+		pinctrl-4 = <&P9_28_gpio_input_pin>;
+		pinctrl-5 = <&P9_28_spi_cs_pin>;
+		pinctrl-6 = <&P9_28_pwm_pin>;
+		pinctrl-7 = <&P9_28_pwm2_pin>;
+		pinctrl-8 = <&P9_28_pruout_pin>;
+		pinctrl-9 = <&P9_28_pruin_pin>;
+	};
+
+	/* P9_29 (ZCZ ball B13) audio */
+	P9_29_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P9_29_default_pin>;
+		pinctrl-1 = <&P9_29_gpio_pin>;
+		pinctrl-2 = <&P9_29_gpio_pu_pin>;
+		pinctrl-3 = <&P9_29_gpio_pd_pin>;
+		pinctrl-4 = <&P9_29_gpio_input_pin>;
+		pinctrl-5 = <&P9_29_spi_pin>;
+		pinctrl-6 = <&P9_29_pwm_pin>;
+		pinctrl-7 = <&P9_29_pruout_pin>;
+		pinctrl-8 = <&P9_29_pruin_pin>;
+	};
+
+	/* P9_30 (ZCZ ball D12) */
+	P9_30_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P9_30_default_pin>;
+		pinctrl-1 = <&P9_30_gpio_pin>;
+		pinctrl-2 = <&P9_30_gpio_pu_pin>;
+		pinctrl-3 = <&P9_30_gpio_pd_pin>;
+		pinctrl-4 = <&P9_30_gpio_input_pin>;
+		pinctrl-5 = <&P9_30_spi_pin>;
+		pinctrl-6 = <&P9_30_pwm_pin>;
+		pinctrl-7 = <&P9_30_pruout_pin>;
+		pinctrl-8 = <&P9_30_pruin_pin>;
+	};
+
+	/* P9_31 (ZCZ ball A13) audio */
+	P9_31_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P9_31_default_pin>;
+		pinctrl-1 = <&P9_31_gpio_pin>;
+		pinctrl-2 = <&P9_31_gpio_pu_pin>;
+		pinctrl-3 = <&P9_31_gpio_pd_pin>;
+		pinctrl-4 = <&P9_31_gpio_input_pin>;
+		pinctrl-5 = <&P9_31_spi_sclk_pin>;
+		pinctrl-6 = <&P9_31_pwm_pin>;
+		pinctrl-7 = <&P9_31_pruout_pin>;
+		pinctrl-8 = <&P9_31_pruin_pin>;
+	};
+
+	/* P9_32                VADC */
+
+	/* P9_33 (ZCZ ball C8)  AIN4         */
+
+	/* P9_34                AGND */
+
+	/* P9_35 (ZCZ ball A8)  AIN6         */
+
+	/* P9_36 (ZCZ ball B8)  AIN5         */
+
+	/* P9_37 (ZCZ ball B7)  AIN2         */
+
+	/* P9_38 (ZCZ ball A7)  AIN3         */
+
+	/* P9_39 (ZCZ ball B6)  AIN0         */
+
+	/* P9_40 (ZCZ ball C7)  AIN1         */
+
+	/* P9_41 (ZCZ ball D14) */
+	P9_41_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer", "pruin";
+		pinctrl-0 = <&P9_41_default_pin>;
+		pinctrl-1 = <&P9_41_gpio_pin>;
+		pinctrl-2 = <&P9_41_gpio_pu_pin>;
+		pinctrl-3 = <&P9_41_gpio_pd_pin>;
+		pinctrl-4 = <&P9_41_gpio_input_pin>;
+		pinctrl-5 = <&P9_41_timer_pin>;
+		pinctrl-6 = <&P9_41_pruin_pin>;
+	};
+
+	/* P9_41.1 */
+	/* P9_91 (ZCZ ball D13) */
+	P9_91_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P9_91_default_pin>;
+		pinctrl-1 = <&P9_91_gpio_pin>;
+		pinctrl-2 = <&P9_91_gpio_pu_pin>;
+		pinctrl-3 = <&P9_91_gpio_pd_pin>;
+		pinctrl-4 = <&P9_91_gpio_input_pin>;
+		pinctrl-5 = <&P9_91_qep_pin>;
+		pinctrl-6 = <&P9_91_pruout_pin>;
+		pinctrl-7 = <&P9_91_pruin_pin>;
+	};
+
+	/* P9_42 (ZCZ ball C18) */
+	P9_42_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "spi_sclk", "uart", "pwm", "pru_ecap";
+		pinctrl-0 = <&P9_42_default_pin>;
+		pinctrl-1 = <&P9_42_gpio_pin>;
+		pinctrl-2 = <&P9_42_gpio_pu_pin>;
+		pinctrl-3 = <&P9_42_gpio_pd_pin>;
+		pinctrl-4 = <&P9_42_gpio_input_pin>;
+		pinctrl-5 = <&P9_42_spi_cs_pin>;
+		pinctrl-6 = <&P9_42_spi_sclk_pin>;
+		pinctrl-7 = <&P9_42_uart_pin>;
+		pinctrl-8 = <&P9_42_pwm_pin>;
+		pinctrl-9 = <&P9_42_pru_ecap_pin>;
+	};
+
+	/* P9_42.1 */
+	/* P9_92 (ZCZ ball B12) */
+	P9_92_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P9_92_default_pin>;
+		pinctrl-1 = <&P9_92_gpio_pin>;
+		pinctrl-2 = <&P9_92_gpio_pu_pin>;
+		pinctrl-3 = <&P9_92_gpio_pd_pin>;
+		pinctrl-4 = <&P9_92_gpio_input_pin>;
+		pinctrl-5 = <&P9_92_qep_pin>;
+		pinctrl-6 = <&P9_92_pruout_pin>;
+		pinctrl-7 = <&P9_92_pruin_pin>;
+	};
+
+	/* P9_43                GND */
+
+	/* P9_44                GND */
+
+	/* P9_45                GND */
+
+	/* P9_46                GND */
+
+	cape-universal {
+		compatible = "gpio-of-helper";
+		status = "okay";
+		pinctrl-names = "default";
+		pinctrl-0 = <>;
+
+		P8_03 {
+			gpio-name = "P8_03";
+			gpio = <&gpio1 6 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_04 {
+			gpio-name = "P8_04";
+			gpio = <&gpio1 7 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_05 {
+			gpio-name = "P8_05";
+			gpio = <&gpio1 2 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_06 {
+			gpio-name = "P8_06";
+			gpio = <&gpio1 3 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_07 {
+			gpio-name = "P8_07";
+			gpio = <&gpio2 2 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_08 {
+			gpio-name = "P8_08";
+			gpio = <&gpio2 3 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_09 {
+			gpio-name = "P8_09";
+			gpio = <&gpio2 5 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_10 {
+			gpio-name = "P8_10";
+			gpio = <&gpio2 4 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_11 {
+			gpio-name = "P8_11";
+			gpio = <&gpio1 13 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_12 {
+			gpio-name = "P8_12";
+			gpio = <&gpio1 12 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_13 {
+			gpio-name = "P8_13";
+			gpio = <&gpio0 23 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_14 {
+			gpio-name = "P8_14";
+			gpio = <&gpio0 26 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_15 {
+			gpio-name = "P8_15";
+			gpio = <&gpio1 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_16 {
+			gpio-name = "P8_16";
+			gpio = <&gpio1 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_17 {
+			gpio-name = "P8_17";
+			gpio = <&gpio0 27 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_18 {
+			gpio-name = "P8_18";
+			gpio = <&gpio2 1 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_19 {
+			gpio-name = "P8_19";
+			gpio = <&gpio0 22 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_20 {
+			gpio-name = "P8_20";
+			gpio = <&gpio1 31 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_21 {
+			gpio-name = "P8_21";
+			gpio = <&gpio1 30 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_22 {
+			gpio-name = "P8_22";
+			gpio = <&gpio1 5 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_23 {
+			gpio-name = "P8_23";
+			gpio = <&gpio1 4 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_24 {
+			gpio-name = "P8_24";
+			gpio = <&gpio1 1 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_25 {
+			gpio-name = "P8_25";
+			gpio = <&gpio1 0 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_26 {
+			gpio-name = "P8_26";
+			gpio = <&gpio1 29 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_27 {
+			gpio-name = "P8_27";
+			gpio = <&gpio2 22 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_28 {
+			gpio-name = "P8_28";
+			gpio = <&gpio2 24 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_29 {
+			gpio-name = "P8_29";
+			gpio = <&gpio2 23 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_30 {
+			gpio-name = "P8_30";
+			gpio = <&gpio2 25 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_31 {
+			gpio-name = "P8_31";
+			gpio = <&gpio0 10 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_32 {
+			gpio-name = "P8_32";
+			gpio = <&gpio0 11 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_33 {
+			gpio-name = "P8_33";
+			gpio = <&gpio0 9 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_34 {
+			gpio-name = "P8_34";
+			gpio = <&gpio2 17 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_35 {
+			gpio-name = "P8_35";
+			gpio = <&gpio0 8 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_36 {
+			gpio-name = "P8_36";
+			gpio = <&gpio2 16 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_37 {
+			gpio-name = "P8_37";
+			gpio = <&gpio2 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_38 {
+			gpio-name = "P8_38";
+			gpio = <&gpio2 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_39 {
+			gpio-name = "P8_39";
+			gpio = <&gpio2 12 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_40 {
+			gpio-name = "P8_40";
+			gpio = <&gpio2 13 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_41 {
+			gpio-name = "P8_41";
+			gpio = <&gpio2 10 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_42 {
+			gpio-name = "P8_42";
+			gpio = <&gpio2 11 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_43 {
+			gpio-name = "P8_43";
+			gpio = <&gpio2 8 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_44 {
+			gpio-name = "P8_44";
+			gpio = <&gpio2 9 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_45 {
+			gpio-name = "P8_45";
+			gpio = <&gpio2 6 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_46 {
+			gpio-name = "P8_46";
+			gpio = <&gpio2 7 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_11 {
+			gpio-name = "P9_11";
+			gpio = <&gpio0 30 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_12 {
+			gpio-name = "P9_12";
+			gpio = <&gpio1 28 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_13 {
+			gpio-name = "P9_13";
+			gpio = <&gpio0 31 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_14 {
+			gpio-name = "P9_14";
+			gpio = <&gpio1 18 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_15 {
+			gpio-name = "P9_15";
+			gpio = <&gpio1 16 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_16 {
+			gpio-name = "P9_16";
+			gpio = <&gpio1 19 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_17 {
+			gpio-name = "P9_17";
+			gpio = <&gpio0 5 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_18 {
+			gpio-name = "P9_18";
+			gpio = <&gpio0 4 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_19 {
+			gpio-name = "P9_19";
+			gpio = <&gpio0 13 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_20 {
+			gpio-name = "P9_20";
+			gpio = <&gpio0 12 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_21 {
+			gpio-name = "P9_21";
+			gpio = <&gpio0 3 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_22 {
+			gpio-name = "P9_22";
+			gpio = <&gpio0 2 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_23 {
+			gpio-name = "P9_23";
+			gpio = <&gpio1 17 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_24 {
+			gpio-name = "P9_24";
+			gpio = <&gpio0 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_25 {
+			gpio-name = "P9_25";
+			gpio = <&gpio3 21 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_26 {
+			gpio-name = "P9_26";
+			gpio = <&gpio0 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_27 {
+			gpio-name = "P9_27";
+			gpio = <&gpio3 19 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_28 {
+			gpio-name = "P9_28";
+			gpio = <&gpio3 17 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_29 {
+			gpio-name = "P9_29";
+			gpio = <&gpio3 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_30 {
+			gpio-name = "P9_30";
+			gpio = <&gpio3 16 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_31 {
+			gpio-name = "P9_31";
+			gpio = <&gpio3 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_41 {
+			gpio-name = "P9_41";
+			gpio = <&gpio0 20 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_91 {
+			gpio-name = "P9_91";
+			gpio = <&gpio3 20 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_42 {
+			gpio-name = "P9_42";
+			gpio = <&gpio0 7 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_92 {
+			gpio-name = "P9_92";
+			gpio = <&gpio3 18 0>;
+			input;
+			dir-changeable;
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
--- a/arch/arm/boot/dts/am335x-bone.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-bone.dts	2022-06-12 13:07:42.547111701 -0400
@@ -10,6 +10,11 @@
 / {
 	model = "TI AM335x BeagleBone";
 	compatible = "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-bone.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
 
 &ldo3_reg {
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bonegreen-common.dtsi b/arch/arm/boot/dts/am335x-bonegreen-common.dtsi
--- a/arch/arm/boot/dts/am335x-bonegreen-common.dtsi	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-bonegreen-common.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -34,6 +34,7 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart2_pins>;
 	status = "okay";
+	symlink = "bone/uart/2";
 };
 
 &rtc {
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bonegreen.dts b/arch/arm/boot/dts/am335x-bonegreen.dts
--- a/arch/arm/boot/dts/am335x-bonegreen.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-bonegreen.dts	2022-06-12 13:07:42.547111701 -0400
@@ -11,4 +11,9 @@
 / {
 	model = "TI AM335x BeagleBone Green";
 	compatible = "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-bonegreen.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bonegreen-gateway.dts b/arch/arm/boot/dts/am335x-bonegreen-gateway.dts
--- a/arch/arm/boot/dts/am335x-bonegreen-gateway.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/am335x-bonegreen-gateway.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,260 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bonegreen-common.dtsi"
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+	model = "SeeedStudio BeagleBone Green Gateway";
+	compatible = "ti,am335x-bone-green-gateway", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	aliases {
+		rtc0 = &extrtc;
+		rtc1 = &rtc;
+	};
+
+	chosen {
+		base_dtb = "am335x-bonegreen-gateway.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+		wl1835_bt = "S3-texas-300000";
+	};
+
+	wlan_en_reg: fixedregulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "wlan-en-regulator";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		startup-delay-us= <70000>;
+
+		/* WL_EN */
+		gpio = <&gpio3 9 0>;
+		enable-active-high;
+	};
+
+	leds {
+		pinctrl-names = "default";
+		//pinctrl-0 = <&user_leds_s0>;
+		pinctrl-0 = <&user_leds_s0 &bt_pins>;
+
+		compatible = "gpio-leds";
+
+		led2 {
+			label = "beaglebone:green:usr0";
+			gpios = <&gpio1 21 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+			default-state = "off";
+		};
+
+		led3 {
+			label = "beaglebone:green:usr1";
+			gpios = <&gpio1 22 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc0";
+			default-state = "off";
+		};
+
+		led4 {
+			label = "beaglebone:green:usr2";
+			gpios = <&gpio1 23 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "cpu0";
+			default-state = "off";
+		};
+
+		led5 {
+			label = "beaglebone:green:usr3";
+			gpios = <&gpio1 24 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc1";
+			default-state = "off";
+		};
+
+		led6 {
+			label = "beaglebone:green:usr4";
+			gpios = <&gpio2 21 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "netdev";
+			default-state = "off";
+		};
+
+		wl18xx_bt_en: led7 {
+			label = "wl18xx_bt_en";
+			gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+	};
+};
+
+&cpu0_opp_table {
+	/*
+	 * Octavo Systems:
+	 * The EFUSE_SMA register is not programmed for any of the AM335x wafers
+	 * we get and we are not programming them during our production test.
+	 * Therefore, from a DEVICE_ID revision point of view, the silicon looks
+	 * like it is Revision 2.1.  However, from an EFUSE_SMA point of view for
+	 * the HW OPP table, the silicon looks like it is Revision 1.0 (ie the
+	 * EFUSE_SMA register reads as all zeros).
+	 */
+	oppnitro-1000000000 {
+		opp-supported-hw = <0x06 0x0100>;
+	};
+};
+
+&am33xx_pinmux {
+	pinctrl-names = "default";
+	pinctrl-0 = <&usbhost_pins>;
+
+	user_leds_s0: user_leds_s0 {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A5, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_a5.gpio1_21 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A6, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gpmc_a6.gpio1_22 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A7, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_a7.gpio1_23 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A8, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gpmc_a8.gpio1_24 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD0, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* WL_Active_LED / USR4 */
+		>;
+	};
+
+	bt_pins: pinmux_bt_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD0, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gmii1_txd0.gpio0_28 - BT_EN */
+		>;
+	};
+
+	mmc3_pins: pinmux_mmc3_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD1, PIN_INPUT_PULLUP, MUX_MODE6 ) /* (L15) gmii1_rxd1.mmc2_clk */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TX_EN, PIN_INPUT_PULLUP, MUX_MODE6 ) /* (J16) gmii1_txen.mmc2_cmd */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RX_DV, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (J17) gmii1_rxdv.mmc2_dat0 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD3, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (J18) gmii1_txd3.mmc2_dat1 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD2, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (K15) gmii1_txd2.mmc2_dat2 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_COL, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (H16) gmii1_col.mmc2_dat3 */
+		>;
+	};
+
+	uart2_grove_pins: pinmux_uart2_grove_pins {
+		pinctrl-single,pins = <
+			AM33XX_IOPAD(0x90c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6)
+			AM33XX_IOPAD(0x910, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6)
+		>;
+	};
+
+	uart3_pins: pinmux_uart3_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD3, PIN_INPUT_PULLUP, MUX_MODE1)	/* gmii1_rxd3.uart3_rxd */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD2, PIN_OUTPUT_PULLDOWN, MUX_MODE1)	/* gmii1_rxd2.uart3_txd */
+			AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT, MUX_MODE3)		/* mdio_data.uart3_ctsn */
+			AM33XX_PADCONF(AM335X_PIN_MDC, PIN_OUTPUT_PULLDOWN, MUX_MODE3)	/* mdio_clk.uart3_rtsn */
+		>;
+	};
+
+	usbhost_pins: pinmux_usbhost_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD1, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gmii1_txd1.gpio0[21] */
+		>;
+	};
+
+	wl18xx_pins: pinmux_wl18xx_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_TX_CLK, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gmii1_txclk.gpio3_9 WL_EN */
+			AM33XX_PADCONF(AM335X_PIN_RMII1_REF_CLK, PIN_INPUT_PULLDOWN, MUX_MODE7)	/* rmii1_refclk.gpio0_29 WL_IRQ */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RX_CLK, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gmii1_rxclk.gpio3_10 LS_BUF_EN */
+		>;
+	};
+};
+
+&mac_sw {
+	/delete-property/pinctrl-names;
+	/delete-property/pinctrl-0;
+	/delete-property/pinctrl-1;
+	status = "disabled";
+};
+
+&mmc3 {
+	dmas = <&edma_xbar 12 0 1
+		&edma_xbar 13 0 2>;
+	dma-names = "tx", "rx";
+	status = "okay";
+	vmmc-supply = <&wlan_en_reg>;
+	bus-width = <4>;
+	non-removable;
+	cap-power-off-card;
+	keep-power-in-suspend;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc3_pins &wl18xx_pins>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	wlcore: wlcore@2 {
+		compatible = "ti,wl1835";
+		reg = <2>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <29 IRQ_TYPE_EDGE_RISING>;
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart2_grove_pins>;
+	status = "okay";
+};
+
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart3_pins>;
+	//pinctrl-0 = <&uart3_pins &bt_pins>;
+	status = "okay";
+
+	//bluetooth {
+	//	compatible = "ti,wl1835-st";
+	//	enable-gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
+	//};
+};
+
+&i2c0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	extrtc: rtc@68 {
+		compatible = "dallas,ds1340";
+		reg = <0x68>;
+	};
+};
+
+// (K16) gmii1_txd1.gpio0[21]
+&gpio0 {
+	usb-reset-hog {
+		gpio-hog;
+		gpios = <21 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "usb_reset";
+	};
+};
+
+&gpio3 {
+	ls-buf-en-hog {
+		gpio-hog;
+		gpios = <10 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "LS_BUF_EN";
+	};
+};
+
+&usb1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	hub@1 {
+		compatible = "usb424,9512";
+		reg = <1>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethernet: ethernet@1 {
+			compatible = "usb424,ec00";
+			reg = <1>;
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bonegreen-wireless-common-univ.dtsi b/arch/arm/boot/dts/am335x-bonegreen-wireless-common-univ.dtsi
--- a/arch/arm/boot/dts/am335x-bonegreen-wireless-common-univ.dtsi	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/am335x-bonegreen-wireless-common-univ.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,2783 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+&am33xx_pinmux {
+	/************************/
+	/* P8 Header */
+	/************************/
+
+	/* P8_01                GND */
+
+	/* P8_02                GND */
+
+
+	/* P8_03 (ZCZ ball R9) emmc */
+	P8_03_default_pin: pinmux_P8_03_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad6.gpio1_6 */
+	P8_03_gpio_pin: pinmux_P8_03_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad6.gpio1_6 */
+	P8_03_gpio_pu_pin: pinmux_P8_03_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad6.gpio1_6 */
+	P8_03_gpio_pd_pin: pinmux_P8_03_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad6.gpio1_6 */
+	P8_03_gpio_input_pin: pinmux_P8_03_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0818, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad6.gpio1_6 */
+
+	/* P8_04 (ZCZ ball T9) emmc */
+	P8_04_default_pin: pinmux_P8_04_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad7.gpio1_7 */
+	P8_04_gpio_pin: pinmux_P8_04_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad7.gpio1_7 */
+	P8_04_gpio_pu_pin: pinmux_P8_04_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad7.gpio1_7 */
+	P8_04_gpio_pd_pin: pinmux_P8_04_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad7.gpio1_7 */
+	P8_04_gpio_input_pin: pinmux_P8_04_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x081c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad7.gpio1_7 */
+
+	/* P8_05 (ZCZ ball R8) emmc */
+	P8_05_default_pin: pinmux_P8_05_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad2.gpio1_2 */
+	P8_05_gpio_pin: pinmux_P8_05_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad2.gpio1_2 */
+	P8_05_gpio_pu_pin: pinmux_P8_05_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad2.gpio1_2 */
+	P8_05_gpio_pd_pin: pinmux_P8_05_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad2.gpio1_2 */
+	P8_05_gpio_input_pin: pinmux_P8_05_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0808, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad2.gpio1_2 */
+
+	/* P8_06 (ZCZ ball T8) emmc */
+	P8_06_default_pin: pinmux_P8_06_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad3.gpio1_3 */
+	P8_06_gpio_pin: pinmux_P8_06_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad3.gpio1_3 */
+	P8_06_gpio_pu_pin: pinmux_P8_06_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad3.gpio1_3 */
+	P8_06_gpio_pd_pin: pinmux_P8_06_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad3.gpio1_3 */
+	P8_06_gpio_input_pin: pinmux_P8_06_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x080c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad3.gpio1_3 */
+
+	/* P8_07 (ZCZ ball R7) gpio2_2 */
+	P8_07_default_pin: pinmux_P8_07_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_advn_ale.gpio2_2 */
+	P8_07_gpio_pin: pinmux_P8_07_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_advn_ale.gpio2_2 */
+	P8_07_gpio_pu_pin: pinmux_P8_07_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_advn_ale.gpio2_2 */
+	P8_07_gpio_pd_pin: pinmux_P8_07_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_advn_ale.gpio2_2 */
+	P8_07_gpio_input_pin: pinmux_P8_07_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_advn_ale.gpio2_2 */
+	P8_07_timer_pin: pinmux_P8_07_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0890, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* gpmc_advn_ale.timer4 */
+
+	/* P8_08 (ZCZ ball T7) gpio2_3 */
+	P8_08_default_pin: pinmux_P8_08_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_oen_ren.gpio2_3 */
+	P8_08_gpio_pin: pinmux_P8_08_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_oen_ren.gpio2_3 */
+	P8_08_gpio_pu_pin: pinmux_P8_08_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_oen_ren.gpio2_3 */
+	P8_08_gpio_pd_pin: pinmux_P8_08_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_oen_ren.gpio2_3 */
+	P8_08_gpio_input_pin: pinmux_P8_08_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_oen_ren.gpio2_3 */
+	P8_08_timer_pin: pinmux_P8_08_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0894, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* gpmc_oen_ren.timer7 */
+
+	/* P8_09 (ZCZ ball T6) gpio2_5 */
+	P8_09_default_pin: pinmux_P8_09_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_gpio_pin: pinmux_P8_09_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_gpio_pu_pin: pinmux_P8_09_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_gpio_pd_pin: pinmux_P8_09_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_gpio_input_pin: pinmux_P8_09_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_be0n_cle.gpio2_5 */
+	P8_09_timer_pin: pinmux_P8_09_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x089c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* gpmc_be0n_cle.timer5 */
+
+	/* P8_10 (ZCZ ball U6) gpio2_4 */
+	P8_10_default_pin: pinmux_P8_10_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wen.gpio2_4 */
+	P8_10_gpio_pin: pinmux_P8_10_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_wen.gpio2_4 */
+	P8_10_gpio_pu_pin: pinmux_P8_10_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wen.gpio2_4 */
+	P8_10_gpio_pd_pin: pinmux_P8_10_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wen.gpio2_4 */
+	P8_10_gpio_input_pin: pinmux_P8_10_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_wen.gpio2_4 */
+	P8_10_timer_pin: pinmux_P8_10_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0898, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* gpmc_wen.timer6 */
+
+	/* P8_11 (ZCZ ball R12) gpio1_13 */
+	P8_11_default_pin: pinmux_P8_11_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P8_11_gpio_pin: pinmux_P8_11_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad13.gpio1_13 */
+	P8_11_gpio_pu_pin: pinmux_P8_11_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P8_11_gpio_pd_pin: pinmux_P8_11_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P8_11_gpio_input_pin: pinmux_P8_11_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad13.gpio1_13 */
+	P8_11_qep_pin: pinmux_P8_11_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad13.eqep2b_in */
+	P8_11_pruout_pin: pinmux_P8_11_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_ad13.pru0_out15 */
+
+	/* P8_12 (ZCZ ball T12) gpio1_12 */
+	P8_12_default_pin: pinmux_P8_12_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P8_12_gpio_pin: pinmux_P8_12_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad12.gpio1_12 */
+	P8_12_gpio_pu_pin: pinmux_P8_12_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P8_12_gpio_pd_pin: pinmux_P8_12_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P8_12_gpio_input_pin: pinmux_P8_12_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad12.gpio1_12 */
+	P8_12_qep_pin: pinmux_P8_12_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad12.eqep2a_in */
+	P8_12_pruout_pin: pinmux_P8_12_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_ad12.pru0_out14 */
+
+	/* P8_13 (ZCZ ball T10) gpio0_23 */
+	P8_13_default_pin: pinmux_P8_13_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P8_13_gpio_pin: pinmux_P8_13_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad9.gpio0_23 */
+	P8_13_gpio_pu_pin: pinmux_P8_13_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P8_13_gpio_pd_pin: pinmux_P8_13_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P8_13_gpio_input_pin: pinmux_P8_13_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad9.gpio0_23 */
+	P8_13_pwm_pin: pinmux_P8_13_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad9.ehrpwm2b */
+
+	/* P8_14 (ZCZ ball T11) wl1835: wl_en */
+
+	/* P8_15 (ZCZ ball U13) gpio1_15 */
+	P8_15_default_pin: pinmux_P8_15_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P8_15_gpio_pin: pinmux_P8_15_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad15.gpio1_15 */
+	P8_15_gpio_pu_pin: pinmux_P8_15_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P8_15_gpio_pd_pin: pinmux_P8_15_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P8_15_gpio_input_pin: pinmux_P8_15_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad15.gpio1_15 */
+	P8_15_qep_pin: pinmux_P8_15_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad15.eqep2_strobe */
+	P8_15_pru_ecap_pin: pinmux_P8_15_pru_ecap_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* gpmc_ad15.pr1_ecap0_ecap_capin_apwm_o */
+	P8_15_pruin_pin: pinmux_P8_15_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_ad15.pru0_in15 */
+
+	/* P8_16 (ZCZ ball V13) gpio1_14 */
+	P8_16_default_pin: pinmux_P8_16_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P8_16_gpio_pin: pinmux_P8_16_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad14.gpio1_14 */
+	P8_16_gpio_pu_pin: pinmux_P8_16_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P8_16_gpio_pd_pin: pinmux_P8_16_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P8_16_gpio_input_pin: pinmux_P8_16_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad14.gpio1_14 */
+	P8_16_qep_pin: pinmux_P8_16_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad14.eqep2_index */
+	P8_16_pruin_pin: pinmux_P8_16_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_ad14.pru0_in14 */
+
+	/* P8_17 (ZCZ ball U12) wl1835: wl_irq */
+
+	/* P8_18 (ZCZ ball V12) gpio2_1 */
+	P8_18_default_pin: pinmux_P8_18_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P8_18_gpio_pin: pinmux_P8_18_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_clk.gpio2_1 */
+	P8_18_gpio_pu_pin: pinmux_P8_18_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P8_18_gpio_pd_pin: pinmux_P8_18_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P8_18_gpio_input_pin: pinmux_P8_18_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_clk.gpio2_1 */
+
+	/* P8_19 (ZCZ ball U10) gpio0_22 */
+	P8_19_default_pin: pinmux_P8_19_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad8.gpio0_22 */
+	P8_19_gpio_pin: pinmux_P8_19_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad8.gpio0_22 */
+	P8_19_gpio_pu_pin: pinmux_P8_19_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad8.gpio0_22 */
+	P8_19_gpio_pd_pin: pinmux_P8_19_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad8.gpio0_22 */
+	P8_19_gpio_input_pin: pinmux_P8_19_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad8.gpio0_22 */
+	P8_19_pwm_pin: pinmux_P8_19_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0820, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad8.ehrpwm2a */
+
+	/* P8_20 (ZCZ ball V9) emmc */
+	P8_20_default_pin: pinmux_P8_20_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn2.gpio1_31 */
+	P8_20_gpio_pin: pinmux_P8_20_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_csn2.gpio1_31 */
+	P8_20_gpio_pu_pin: pinmux_P8_20_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn2.gpio1_31 */
+	P8_20_gpio_pd_pin: pinmux_P8_20_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn2.gpio1_31 */
+	P8_20_gpio_input_pin: pinmux_P8_20_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_csn2.gpio1_31 */
+	P8_20_pruout_pin: pinmux_P8_20_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* gpmc_csn2.pru1_out13 */
+	P8_20_pruin_pin: pinmux_P8_20_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0884, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_csn2.pru1_in13 */
+
+	/* P8_21 (ZCZ ball U9) emmc */
+	P8_21_default_pin: pinmux_P8_21_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn1.gpio1_30 */
+	P8_21_gpio_pin: pinmux_P8_21_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_csn1.gpio1_30 */
+	P8_21_gpio_pu_pin: pinmux_P8_21_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn1.gpio1_30 */
+	P8_21_gpio_pd_pin: pinmux_P8_21_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn1.gpio1_30 */
+	P8_21_gpio_input_pin: pinmux_P8_21_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_csn1.gpio1_30 */
+	P8_21_pruout_pin: pinmux_P8_21_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* gpmc_csn1.pru1_out12 */
+	P8_21_pruin_pin: pinmux_P8_21_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0880, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_csn1.pru1_in12 */
+
+	/* P8_22 (ZCZ ball V8) emmc */
+	P8_22_default_pin: pinmux_P8_22_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad5.gpio1_5 */
+	P8_22_gpio_pin: pinmux_P8_22_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad5.gpio1_5 */
+	P8_22_gpio_pu_pin: pinmux_P8_22_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad5.gpio1_5 */
+	P8_22_gpio_pd_pin: pinmux_P8_22_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad5.gpio1_5 */
+	P8_22_gpio_input_pin: pinmux_P8_22_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0814, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad5.gpio1_5 */
+
+	/* P8_23 (ZCZ ball U8) emmc */
+	P8_23_default_pin: pinmux_P8_23_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad4.gpio1_4 */
+	P8_23_gpio_pin: pinmux_P8_23_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad4.gpio1_4 */
+	P8_23_gpio_pu_pin: pinmux_P8_23_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad4.gpio1_4 */
+	P8_23_gpio_pd_pin: pinmux_P8_23_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad4.gpio1_4 */
+	P8_23_gpio_input_pin: pinmux_P8_23_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0810, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad4.gpio1_4 */
+
+	/* P8_24 (ZCZ ball V7) emmc */
+	P8_24_default_pin: pinmux_P8_24_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad1.gpio1_1 */
+	P8_24_gpio_pin: pinmux_P8_24_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad1.gpio1_1 */
+	P8_24_gpio_pu_pin: pinmux_P8_24_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad1.gpio1_1 */
+	P8_24_gpio_pd_pin: pinmux_P8_24_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad1.gpio1_1 */
+	P8_24_gpio_input_pin: pinmux_P8_24_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0804, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad1.gpio1_1 */
+
+	/* P8_25 (ZCZ ball U7) emmc */
+	P8_25_default_pin: pinmux_P8_25_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad0.gpio1_0 */
+	P8_25_gpio_pin: pinmux_P8_25_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad0.gpio1_0 */
+	P8_25_gpio_pu_pin: pinmux_P8_25_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad0.gpio1_0 */
+	P8_25_gpio_pd_pin: pinmux_P8_25_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad0.gpio1_0 */
+	P8_25_gpio_input_pin: pinmux_P8_25_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0800, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad0.gpio1_0 */
+
+	/* P8_26 (ZCZ ball V6) gpio-hog wl1835 */
+
+	/* P8_27 (ZCZ ball U5) hdmi */
+	P8_27_default_pin: pinmux_P8_27_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_vsync.gpio2_22 */
+	P8_27_gpio_pin: pinmux_P8_27_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_vsync.gpio2_22 */
+	P8_27_gpio_pu_pin: pinmux_P8_27_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_vsync.gpio2_22 */
+	P8_27_gpio_pd_pin: pinmux_P8_27_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_vsync.gpio2_22 */
+	P8_27_gpio_input_pin: pinmux_P8_27_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_vsync.gpio2_22 */
+	P8_27_pruout_pin: pinmux_P8_27_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_vsync.pru1_out8 */
+	P8_27_pruin_pin: pinmux_P8_27_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE6) >; };			/* lcd_vsync.pru1_in8 */
+
+	/* P8_28 (ZCZ ball V5) hdmi */
+	P8_28_default_pin: pinmux_P8_28_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_pclk.gpio2_24 */
+	P8_28_gpio_pin: pinmux_P8_28_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_pclk.gpio2_24 */
+	P8_28_gpio_pu_pin: pinmux_P8_28_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_pclk.gpio2_24 */
+	P8_28_gpio_pd_pin: pinmux_P8_28_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_pclk.gpio2_24 */
+	P8_28_gpio_input_pin: pinmux_P8_28_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_pclk.gpio2_24 */
+	P8_28_pruout_pin: pinmux_P8_28_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_pclk.pru1_out10 */
+	P8_28_pruin_pin: pinmux_P8_28_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE6) >; };			/* lcd_pclk.pru1_in10 */
+
+	/* P8_29 (ZCZ ball R5) hdmi */
+	P8_29_default_pin: pinmux_P8_29_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_hsync.gpio2_23 */
+	P8_29_gpio_pin: pinmux_P8_29_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_hsync.gpio2_23 */
+	P8_29_gpio_pu_pin: pinmux_P8_29_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_hsync.gpio2_23 */
+	P8_29_gpio_pd_pin: pinmux_P8_29_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_hsync.gpio2_23 */
+	P8_29_gpio_input_pin: pinmux_P8_29_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_hsync.gpio2_23 */
+	P8_29_pruout_pin: pinmux_P8_29_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_hsync.pru1_out9 */
+	P8_29_pruin_pin: pinmux_P8_29_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE6) >; };			/* lcd_hsync.pru1_in9 */
+
+	/* P8_30 (ZCZ ball R6) hdmi */
+	P8_30_default_pin: pinmux_P8_30_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_gpio_pin: pinmux_P8_30_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_gpio_pu_pin: pinmux_P8_30_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_gpio_pd_pin: pinmux_P8_30_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_gpio_input_pin: pinmux_P8_30_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE7) >; };			/* lcd_ac_bias_en.gpio2_25 */
+	P8_30_pruout_pin: pinmux_P8_30_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_ac_bias_en.pru1_out11 */
+	P8_30_pruin_pin: pinmux_P8_30_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE6) >; };			/* lcd_ac_bias_en.pru1_in11 */
+
+	/* P8_31 (ZCZ ball V4) hdmi */
+	P8_31_default_pin: pinmux_P8_31_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data14.gpio0_10 */
+	P8_31_gpio_pin: pinmux_P8_31_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data14.gpio0_10 */
+	P8_31_gpio_pu_pin: pinmux_P8_31_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data14.gpio0_10 */
+	P8_31_gpio_pd_pin: pinmux_P8_31_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data14.gpio0_10 */
+	P8_31_gpio_input_pin: pinmux_P8_31_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data14.gpio0_10 */
+	P8_31_qep_pin: pinmux_P8_31_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* lcd_data14.eqep1_index */
+	P8_31_uart_pin: pinmux_P8_31_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* lcd_data14.uart5_rxd */
+
+	/* P8_32 (ZCZ ball T5) hdmi */
+	P8_32_default_pin: pinmux_P8_32_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data15.gpio0_11 */
+	P8_32_gpio_pin: pinmux_P8_32_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data15.gpio0_11 */
+	P8_32_gpio_pu_pin: pinmux_P8_32_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data15.gpio0_11 */
+	P8_32_gpio_pd_pin: pinmux_P8_32_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data15.gpio0_11 */
+	P8_32_gpio_input_pin: pinmux_P8_32_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data15.gpio0_11 */
+	P8_32_qep_pin: pinmux_P8_32_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08dc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* lcd_data15.eqep1_strobe */
+
+	/* P8_33 (ZCZ ball V3) hdmi */
+	P8_33_default_pin: pinmux_P8_33_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data13.gpio0_9 */
+	P8_33_gpio_pin: pinmux_P8_33_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data13.gpio0_9 */
+	P8_33_gpio_pu_pin: pinmux_P8_33_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data13.gpio0_9 */
+	P8_33_gpio_pd_pin: pinmux_P8_33_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data13.gpio0_9 */
+	P8_33_gpio_input_pin: pinmux_P8_33_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data13.gpio0_9 */
+	P8_33_qep_pin: pinmux_P8_33_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* lcd_data13.eqep1b_in */
+
+	/* P8_34 (ZCZ ball U4) hdmi */
+	P8_34_default_pin: pinmux_P8_34_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data11.gpio2_17 */
+	P8_34_gpio_pin: pinmux_P8_34_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data11.gpio2_17 */
+	P8_34_gpio_pu_pin: pinmux_P8_34_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data11.gpio2_17 */
+	P8_34_gpio_pd_pin: pinmux_P8_34_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data11.gpio2_17 */
+	P8_34_gpio_input_pin: pinmux_P8_34_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data11.gpio2_17 */
+	P8_34_pwm_pin: pinmux_P8_34_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08cc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; };	/* lcd_data11.ehrpwm1b */
+
+	/* P8_35 (ZCZ ball V2) hdmi */
+	P8_35_default_pin: pinmux_P8_35_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data12.gpio0_8 */
+	P8_35_gpio_pin: pinmux_P8_35_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data12.gpio0_8 */
+	P8_35_gpio_pu_pin: pinmux_P8_35_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data12.gpio0_8 */
+	P8_35_gpio_pd_pin: pinmux_P8_35_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data12.gpio0_8 */
+	P8_35_gpio_input_pin: pinmux_P8_35_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data12.gpio0_8 */
+	P8_35_qep_pin: pinmux_P8_35_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08d0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* lcd_data12.eqep1a_in */
+
+	/* P8_36 (ZCZ ball U3) hdmi */
+	P8_36_default_pin: pinmux_P8_36_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data10.gpio2_16 */
+	P8_36_gpio_pin: pinmux_P8_36_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data10.gpio2_16 */
+	P8_36_gpio_pu_pin: pinmux_P8_36_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data10.gpio2_16 */
+	P8_36_gpio_pd_pin: pinmux_P8_36_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data10.gpio2_16 */
+	P8_36_gpio_input_pin: pinmux_P8_36_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data10.gpio2_16 */
+	P8_36_pwm_pin: pinmux_P8_36_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; };	/* lcd_data10.ehrpwm1a */
+
+	/* P8_37 (ZCZ ball U1) hdmi */
+	P8_37_default_pin: pinmux_P8_37_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data8.gpio2_14 */
+	P8_37_gpio_pin: pinmux_P8_37_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data8.gpio2_14 */
+	P8_37_gpio_pu_pin: pinmux_P8_37_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data8.gpio2_14 */
+	P8_37_gpio_pd_pin: pinmux_P8_37_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data8.gpio2_14 */
+	P8_37_gpio_input_pin: pinmux_P8_37_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data8.gpio2_14 */
+	P8_37_pwm_pin: pinmux_P8_37_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; };	/* lcd_data8.ehrpwm1_tripzone_input */
+	P8_37_uart_pin: pinmux_P8_37_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* lcd_data8.uart5_txd */
+
+	/* P8_38 (ZCZ ball U2) hdmi */
+	P8_38_default_pin: pinmux_P8_38_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data9.gpio2_15 */
+	P8_38_gpio_pin: pinmux_P8_38_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data9.gpio2_15 */
+	P8_38_gpio_pu_pin: pinmux_P8_38_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data9.gpio2_15 */
+	P8_38_gpio_pd_pin: pinmux_P8_38_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data9.gpio2_15 */
+	P8_38_gpio_input_pin: pinmux_P8_38_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data9.gpio2_15 */
+	P8_38_pwm_pin: pinmux_P8_38_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE2) >; };	/* lcd_data9.ehrpwm0_synco */
+	P8_38_uart_pin: pinmux_P8_38_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08c4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* lcd_data9.uart5_rxd */
+
+	/* P8_39 (ZCZ ball T3) hdmi */
+	P8_39_default_pin: pinmux_P8_39_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data6.gpio2_12 */
+	P8_39_gpio_pin: pinmux_P8_39_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data6.gpio2_12 */
+	P8_39_gpio_pu_pin: pinmux_P8_39_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data6.gpio2_12 */
+	P8_39_gpio_pd_pin: pinmux_P8_39_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data6.gpio2_12 */
+	P8_39_gpio_input_pin: pinmux_P8_39_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data6.gpio2_12 */
+	P8_39_qep_pin: pinmux_P8_39_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* lcd_data6.eqep2_index */
+	P8_39_pruout_pin: pinmux_P8_39_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data6.pru1_out6 */
+	P8_39_pruin_pin: pinmux_P8_39_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b8, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data6.pru1_in6 */
+
+	/* P8_40 (ZCZ ball T4) hdmi */
+	P8_40_default_pin: pinmux_P8_40_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data7.gpio2_13 */
+	P8_40_gpio_pin: pinmux_P8_40_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data7.gpio2_13 */
+	P8_40_gpio_pu_pin: pinmux_P8_40_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data7.gpio2_13 */
+	P8_40_gpio_pd_pin: pinmux_P8_40_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data7.gpio2_13 */
+	P8_40_gpio_input_pin: pinmux_P8_40_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data7.gpio2_13 */
+	P8_40_qep_pin: pinmux_P8_40_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* lcd_data7.eqep2_strobe */
+	P8_40_pruout_pin: pinmux_P8_40_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data7.pru1_out7 */
+	P8_40_pruin_pin: pinmux_P8_40_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08bc, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data7.pru1_in7 */
+
+	/* P8_41 (ZCZ ball T1) hdmi */
+	P8_41_default_pin: pinmux_P8_41_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data4.gpio2_10 */
+	P8_41_gpio_pin: pinmux_P8_41_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data4.gpio2_10 */
+	P8_41_gpio_pu_pin: pinmux_P8_41_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data4.gpio2_10 */
+	P8_41_gpio_pd_pin: pinmux_P8_41_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data4.gpio2_10 */
+	P8_41_gpio_input_pin: pinmux_P8_41_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data4.gpio2_10 */
+	P8_41_qep_pin: pinmux_P8_41_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* lcd_data4.eqep2a_in */
+	P8_41_pruout_pin: pinmux_P8_41_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data4.pru1_out4 */
+	P8_41_pruin_pin: pinmux_P8_41_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b0, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data4.pru1_in4 */
+
+	/* P8_42 (ZCZ ball T2) hdmi */
+	P8_42_default_pin: pinmux_P8_42_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data5.gpio2_11 */
+	P8_42_gpio_pin: pinmux_P8_42_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data5.gpio2_11 */
+	P8_42_gpio_pu_pin: pinmux_P8_42_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data5.gpio2_11 */
+	P8_42_gpio_pd_pin: pinmux_P8_42_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data5.gpio2_11 */
+	P8_42_gpio_input_pin: pinmux_P8_42_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data5.gpio2_11 */
+	P8_42_qep_pin: pinmux_P8_42_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* lcd_data5.eqep2b_in */
+	P8_42_pruout_pin: pinmux_P8_42_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data5.pru1_out5 */
+	P8_42_pruin_pin: pinmux_P8_42_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08b4, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data5.pru1_in5 */
+
+	/* P8_43 (ZCZ ball R3) hdmi */
+	P8_43_default_pin: pinmux_P8_43_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data2.gpio2_8 */
+	P8_43_gpio_pin: pinmux_P8_43_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data2.gpio2_8 */
+	P8_43_gpio_pu_pin: pinmux_P8_43_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data2.gpio2_8 */
+	P8_43_gpio_pd_pin: pinmux_P8_43_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data2.gpio2_8 */
+	P8_43_gpio_input_pin: pinmux_P8_43_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data2.gpio2_8 */
+	P8_43_pwm_pin: pinmux_P8_43_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* lcd_data2.ehrpwm2_tripzone_input */
+	P8_43_pruout_pin: pinmux_P8_43_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data2.pru1_out2 */
+	P8_43_pruin_pin: pinmux_P8_43_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a8, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data2.pru1_in2 */
+
+	/* P8_44 (ZCZ ball R4) hdmi */
+	P8_44_default_pin: pinmux_P8_44_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data3.gpio2_9 */
+	P8_44_gpio_pin: pinmux_P8_44_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data3.gpio2_9 */
+	P8_44_gpio_pu_pin: pinmux_P8_44_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data3.gpio2_9 */
+	P8_44_gpio_pd_pin: pinmux_P8_44_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data3.gpio2_9 */
+	P8_44_gpio_input_pin: pinmux_P8_44_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data3.gpio2_9 */
+	P8_44_pwm_pin: pinmux_P8_44_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* lcd_data3.ehrpwm0_synco */
+	P8_44_pruout_pin: pinmux_P8_44_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data3.pru1_out3 */
+	P8_44_pruin_pin: pinmux_P8_44_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ac, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data3.pru1_in3 */
+
+	/* P8_45 (ZCZ ball R1) hdmi */
+	P8_45_default_pin: pinmux_P8_45_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data0.gpio2_6 */
+	P8_45_gpio_pin: pinmux_P8_45_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data0.gpio2_6 */
+	P8_45_gpio_pu_pin: pinmux_P8_45_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data0.gpio2_6 */
+	P8_45_gpio_pd_pin: pinmux_P8_45_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data0.gpio2_6 */
+	P8_45_gpio_input_pin: pinmux_P8_45_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data0.gpio2_6 */
+	P8_45_pwm_pin: pinmux_P8_45_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* lcd_data0.ehrpwm2a */
+	P8_45_pruout_pin: pinmux_P8_45_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data0.pru1_out0 */
+	P8_45_pruin_pin: pinmux_P8_45_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a0, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data0.pru1_in0 */
+
+	/* P8_46 (ZCZ ball R2) hdmi */
+	P8_46_default_pin: pinmux_P8_46_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data1.gpio2_7 */
+	P8_46_gpio_pin: pinmux_P8_46_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_data1.gpio2_7 */
+	P8_46_gpio_pu_pin: pinmux_P8_46_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_data1.gpio2_7 */
+	P8_46_gpio_pd_pin: pinmux_P8_46_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_data1.gpio2_7 */
+	P8_46_gpio_input_pin: pinmux_P8_46_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_data1.gpio2_7 */
+	P8_46_pwm_pin: pinmux_P8_46_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* lcd_data1.ehrpwm2b */
+	P8_46_pruout_pin: pinmux_P8_46_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_data1.pru1_out1 */
+	P8_46_pruin_pin: pinmux_P8_46_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08a4, PIN_INPUT | MUX_MODE6) >; };			/* lcd_data1.pru1_in1 */
+
+	/************************/
+	/* P9 Header */
+	/************************/
+
+	/* P9_01                GND */
+
+	/* P9_02                GND */
+
+	/* P9_03                3V3 */
+
+	/* P9_04                3V3 */
+
+	/* P9_05                VDD_5V */
+
+	/* P9_06                VDD_5V */
+
+	/* P9_07                SYS_5V */
+
+	/* P9_08                SYS_5V */
+
+	/* P9_09                PWR_BUT */
+
+	/* P9_10                RSTn */
+
+	/* P9_11 (ZCZ ball T17) gpio0_30 */
+	P9_11_default_pin: pinmux_P9_11_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wait0.gpio0_30 */
+	P9_11_gpio_pin: pinmux_P9_11_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_wait0.gpio0_30 */
+	P9_11_gpio_pu_pin: pinmux_P9_11_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wait0.gpio0_30 */
+	P9_11_gpio_pd_pin: pinmux_P9_11_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wait0.gpio0_30 */
+	P9_11_gpio_input_pin: pinmux_P9_11_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_wait0.gpio0_30 */
+	P9_11_uart_pin: pinmux_P9_11_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_wait0.uart4_rxd */
+
+	/* P9_12 (ZCZ ball U18) gpio1_28 */
+	P9_12_default_pin: pinmux_P9_12_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P9_12_gpio_pin: pinmux_P9_12_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_be1n.gpio1_28 */
+	P9_12_gpio_pu_pin: pinmux_P9_12_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P9_12_gpio_pd_pin: pinmux_P9_12_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P9_12_gpio_input_pin: pinmux_P9_12_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_be1n.gpio1_28 */
+
+	/* P9_13 (ZCZ ball U17) gpio0_31 */
+	P9_13_default_pin: pinmux_P9_13_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wpn.gpio0_31 */
+	P9_13_gpio_pin: pinmux_P9_13_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_wpn.gpio0_31 */
+	P9_13_gpio_pu_pin: pinmux_P9_13_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wpn.gpio0_31 */
+	P9_13_gpio_pd_pin: pinmux_P9_13_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wpn.gpio0_31 */
+	P9_13_gpio_input_pin: pinmux_P9_13_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_wpn.gpio0_31 */
+	P9_13_uart_pin: pinmux_P9_13_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_wpn.uart4_txd */
+
+	/* P9_14 (ZCZ ball U14) gpio1_18 */
+	P9_14_default_pin: pinmux_P9_14_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a2.gpio1_18 */
+	P9_14_gpio_pin: pinmux_P9_14_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a2.gpio1_18 */
+	P9_14_gpio_pu_pin: pinmux_P9_14_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a2.gpio1_18 */
+	P9_14_gpio_pd_pin: pinmux_P9_14_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a2.gpio1_18 */
+	P9_14_gpio_input_pin: pinmux_P9_14_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a2.gpio1_18 */
+	P9_14_pwm_pin: pinmux_P9_14_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a2.ehrpwm1a */
+
+	/* P9_15 (ZCZ ball R13) gpio1_16 */
+	P9_15_default_pin: pinmux_P9_15_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a0.gpio1_16 */
+	P9_15_gpio_pin: pinmux_P9_15_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a0.gpio1_16 */
+	P9_15_gpio_pu_pin: pinmux_P9_15_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a0.gpio1_16 */
+	P9_15_gpio_pd_pin: pinmux_P9_15_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a0.gpio1_16 */
+	P9_15_gpio_input_pin: pinmux_P9_15_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a0.gpio1_16 */
+	P9_15_pwm_pin: pinmux_P9_15_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0840, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a0.ehrpwm1_tripzone_input */
+
+	/* P9_16 (ZCZ ball T14) gpio1_19 */
+	P9_16_default_pin: pinmux_P9_16_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a3.gpio1_19 */
+	P9_16_gpio_pin: pinmux_P9_16_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a3.gpio1_19 */
+	P9_16_gpio_pu_pin: pinmux_P9_16_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a3.gpio1_19 */
+	P9_16_gpio_pd_pin: pinmux_P9_16_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a3.gpio1_19 */
+	P9_16_gpio_input_pin: pinmux_P9_16_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a3.gpio1_19 */
+	P9_16_pwm_pin: pinmux_P9_16_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x084c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a3.ehrpwm1b */
+
+	/* P9_17 (ZCZ ball A16) gpio0_5 */
+	P9_17_default_pin: pinmux_P9_17_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_cs0.gpio0_5 */
+	P9_17_gpio_pin: pinmux_P9_17_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_cs0.gpio0_5 */
+	P9_17_gpio_pu_pin: pinmux_P9_17_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_cs0.gpio0_5 */
+	P9_17_gpio_pd_pin: pinmux_P9_17_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_cs0.gpio0_5 */
+	P9_17_gpio_input_pin: pinmux_P9_17_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_INPUT | MUX_MODE7) >; };			/* spi0_cs0.gpio0_5 */
+	P9_17_spi_cs_pin: pinmux_P9_17_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_cs0.spi0_cs0 */
+	P9_17_i2c_pin: pinmux_P9_17_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_cs0.i2c1_scl */
+	P9_17_pwm_pin: pinmux_P9_17_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_cs0.ehrpwm0_synci */
+	P9_17_pru_uart_pin: pinmux_P9_17_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_cs0.pr1_uart0_txd */
+
+	/* P9_18 (ZCZ ball B16) gpio0_4 */
+	P9_18_default_pin: pinmux_P9_18_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d1.gpio0_4 */
+	P9_18_gpio_pin: pinmux_P9_18_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_d1.gpio0_4 */
+	P9_18_gpio_pu_pin: pinmux_P9_18_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d1.gpio0_4 */
+	P9_18_gpio_pd_pin: pinmux_P9_18_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_d1.gpio0_4 */
+	P9_18_gpio_input_pin: pinmux_P9_18_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_INPUT | MUX_MODE7) >; };			/* spi0_d1.gpio0_4 */
+	P9_18_spi_pin: pinmux_P9_18_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_d1.spi0_d1 */
+	P9_18_i2c_pin: pinmux_P9_18_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_d1.i2c1_sda */
+	P9_18_pwm_pin: pinmux_P9_18_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_d1.ehrpwm0_tripzone_input */
+	P9_18_pru_uart_pin: pinmux_P9_18_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_d1.pr1_uart0_rxd */
+
+	/* P9_19 (ZCZ ball D17) i2c2_scl */
+	P9_19_default_pin: pinmux_P9_19_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rtsn.i2c2_scl */
+	P9_19_gpio_pin: pinmux_P9_19_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_rtsn.gpio0_13 */
+	P9_19_gpio_pu_pin: pinmux_P9_19_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_rtsn.gpio0_13 */
+	P9_19_gpio_pd_pin: pinmux_P9_19_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_rtsn.gpio0_13 */
+	P9_19_gpio_input_pin: pinmux_P9_19_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_INPUT | MUX_MODE7) >; };			/* uart1_rtsn.gpio0_13 */
+	P9_19_timer_pin: pinmux_P9_19_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* uart1_rtsn.timer5 */
+	P9_19_can_pin: pinmux_P9_19_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_INPUT_PULLUP | MUX_MODE2) >; };		/* uart1_rtsn.dcan0_rx */
+	P9_19_i2c_pin: pinmux_P9_19_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rtsn.i2c2_scl */
+	P9_19_spi_cs_pin: pinmux_P9_19_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart1_rtsn.spi1_cs1 */
+	P9_19_pru_uart_pin: pinmux_P9_19_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_rtsn.pr1_uart0_rts_n */
+
+	/* P9_20 (ZCZ ball D18) i2c2_sda */
+	P9_20_default_pin: pinmux_P9_20_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_ctsn.i2c2_sda */
+	P9_20_gpio_pin: pinmux_P9_20_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_ctsn.gpio0_12 */
+	P9_20_gpio_pu_pin: pinmux_P9_20_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_ctsn.gpio0_12 */
+	P9_20_gpio_pd_pin: pinmux_P9_20_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_ctsn.gpio0_12 */
+	P9_20_gpio_input_pin: pinmux_P9_20_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_INPUT | MUX_MODE7) >; };			/* uart1_ctsn.gpio0_12 */
+	P9_20_timer_pin: pinmux_P9_20_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* uart1_ctsn.timer6 */
+	P9_20_can_pin: pinmux_P9_20_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | MUX_MODE2) >; };		/* uart1_ctsn.dcan0_tx */
+	P9_20_i2c_pin: pinmux_P9_20_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_ctsn.i2c2_sda */
+	P9_20_spi_cs_pin: pinmux_P9_20_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart1_ctsn.spi1_cs0 */
+	P9_20_pru_uart_pin: pinmux_P9_20_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_ctsn.pr1_uart0_cts_n */
+
+	/* P9_21 (ZCZ ball B17) gpio0_3 */
+	P9_21_default_pin: pinmux_P9_21_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d0.gpio0_3 */
+	P9_21_gpio_pin: pinmux_P9_21_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_d0.gpio0_3 */
+	P9_21_gpio_pu_pin: pinmux_P9_21_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d0.gpio0_3 */
+	P9_21_gpio_pd_pin: pinmux_P9_21_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_d0.gpio0_3 */
+	P9_21_gpio_input_pin: pinmux_P9_21_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_INPUT | MUX_MODE7) >; };			/* spi0_d0.gpio0_3 */
+	P9_21_spi_pin: pinmux_P9_21_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_d0.spi0_d0 */
+	P9_21_uart_pin: pinmux_P9_21_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* spi0_d0.uart2_txd */
+	P9_21_i2c_pin: pinmux_P9_21_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_d0.i2c2_scl */
+	P9_21_pwm_pin: pinmux_P9_21_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_d0.ehrpwm0b */
+	P9_21_pru_uart_pin: pinmux_P9_21_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_d0.pr1_uart0_rts_n */
+
+	/* P9_22 (ZCZ ball A17) gpio0_2 */
+	P9_22_default_pin: pinmux_P9_22_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_sclk.gpio0_2 */
+	P9_22_gpio_pin: pinmux_P9_22_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_sclk.gpio0_2 */
+	P9_22_gpio_pu_pin: pinmux_P9_22_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_sclk.gpio0_2 */
+	P9_22_gpio_pd_pin: pinmux_P9_22_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_sclk.gpio0_2 */
+	P9_22_gpio_input_pin: pinmux_P9_22_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_INPUT | MUX_MODE7) >; };			/* spi0_sclk.gpio0_2 */
+	P9_22_spi_sclk_pin: pinmux_P9_22_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_sclk.spi0_sclk */
+	P9_22_uart_pin: pinmux_P9_22_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* spi0_sclk.uart2_rxd */
+	P9_22_i2c_pin: pinmux_P9_22_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_sclk.i2c2_sda */
+	P9_22_pwm_pin: pinmux_P9_22_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_sclk.ehrpwm0a */
+	P9_22_pru_uart_pin: pinmux_P9_22_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_sclk.pr1_uart0_cts_n */
+
+	/* P9_23 (ZCZ ball V14) gpio1_17 */
+	P9_23_default_pin: pinmux_P9_23_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a1.gpio1_17 */
+	P9_23_gpio_pin: pinmux_P9_23_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a1.gpio1_17 */
+	P9_23_gpio_pu_pin: pinmux_P9_23_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a1.gpio1_17 */
+	P9_23_gpio_pd_pin: pinmux_P9_23_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a1.gpio1_17 */
+	P9_23_gpio_input_pin: pinmux_P9_23_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a1.gpio1_17 */
+	P9_23_pwm_pin: pinmux_P9_23_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0844, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a1.ehrpwm0_synco */
+
+	/* P9_24 (ZCZ ball D15) gpio0_15 */
+	P9_24_default_pin: pinmux_P9_24_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_txd.gpio0_15 */
+	P9_24_gpio_pin: pinmux_P9_24_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_txd.gpio0_15 */
+	P9_24_gpio_pu_pin: pinmux_P9_24_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_txd.gpio0_15 */
+	P9_24_gpio_pd_pin: pinmux_P9_24_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_txd.gpio0_15 */
+	P9_24_gpio_input_pin: pinmux_P9_24_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE7) >; };			/* uart1_txd.gpio0_15 */
+	P9_24_uart_pin: pinmux_P9_24_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart1_txd.uart1_txd */
+	P9_24_can_pin: pinmux_P9_24_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT_PULLUP | MUX_MODE2) >; };		/* uart1_txd.dcan1_rx */
+	P9_24_i2c_pin: pinmux_P9_24_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_txd.i2c1_scl */
+	P9_24_pru_uart_pin: pinmux_P9_24_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_txd.pr1_uart0_txd */
+	P9_24_pruin_pin: pinmux_P9_24_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE6) >; };			/* uart1_txd.pru0_in16 */
+
+	/* P9_25 (ZCZ ball A14) audio */
+	P9_25_default_pin: pinmux_P9_25_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_gpio_pin: pinmux_P9_25_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_gpio_pu_pin: pinmux_P9_25_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_gpio_pd_pin: pinmux_P9_25_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_gpio_input_pin: pinmux_P9_25_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_ahclkx.gpio3_21 */
+	P9_25_qep_pin: pinmux_P9_25_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_ahclkx.eqep0_strobe */
+	P9_25_pruout_pin: pinmux_P9_25_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_ahclkx.pru0_out7 */
+	P9_25_pruin_pin: pinmux_P9_25_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_ahclkx.pru0_in7 */
+
+	/* P9_26 (ZCZ ball D16) gpio0_14 */
+	P9_26_default_pin: pinmux_P9_26_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_rxd.gpio0_14 */
+	P9_26_gpio_pin: pinmux_P9_26_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_rxd.gpio0_14 */
+	P9_26_gpio_pu_pin: pinmux_P9_26_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_rxd.gpio0_14 */
+	P9_26_gpio_pd_pin: pinmux_P9_26_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_rxd.gpio0_14 */
+	P9_26_gpio_input_pin: pinmux_P9_26_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE7) >; };			/* uart1_rxd.gpio0_14 */
+	P9_26_uart_pin: pinmux_P9_26_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart1_rxd.uart1_rxd */
+	P9_26_can_pin: pinmux_P9_26_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | MUX_MODE2) >; };		/* uart1_rxd.dcan1_tx */
+	P9_26_i2c_pin: pinmux_P9_26_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rxd.i2c1_sda */
+	P9_26_pru_uart_pin: pinmux_P9_26_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_rxd.pr1_uart0_rxd */
+	P9_26_pruin_pin: pinmux_P9_26_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE6) >; };			/* uart1_rxd.pru1_in16 */
+
+	/* P9_27 (ZCZ ball C13) gpio3_19 */
+	P9_27_default_pin: pinmux_P9_27_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsr.gpio3_19 */
+	P9_27_gpio_pin: pinmux_P9_27_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_fsr.gpio3_19 */
+	P9_27_gpio_pu_pin: pinmux_P9_27_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsr.gpio3_19 */
+	P9_27_gpio_pd_pin: pinmux_P9_27_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsr.gpio3_19 */
+	P9_27_gpio_input_pin: pinmux_P9_27_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_fsr.gpio3_19 */
+	P9_27_qep_pin: pinmux_P9_27_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_fsr.eqep0b_in */
+	P9_27_pruout_pin: pinmux_P9_27_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_fsr.pru0_out5 */
+	P9_27_pruin_pin: pinmux_P9_27_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_fsr.pru0_in5 */
+
+	/* P9_28 (ZCZ ball C12) audio */
+	P9_28_default_pin: pinmux_P9_28_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_gpio_pin: pinmux_P9_28_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_gpio_pu_pin: pinmux_P9_28_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_gpio_pd_pin: pinmux_P9_28_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_gpio_input_pin: pinmux_P9_28_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_ahclkr.gpio3_17 */
+	P9_28_pwm_pin: pinmux_P9_28_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_ahclkr.ehrpwm0_synci */
+	P9_28_spi_cs_pin: pinmux_P9_28_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_ahclkr.spi1_cs0 */
+	P9_28_pwm2_pin: pinmux_P9_28_pwm2_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* mcasp0_ahclkr.ecap2_in_pwm2_out */
+	P9_28_pruout_pin: pinmux_P9_28_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_ahclkr.pru0_out3 */
+	P9_28_pruin_pin: pinmux_P9_28_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_ahclkr.pru0_in3 */
+
+	/* P9_29 (ZCZ ball B13) audio */
+	P9_29_default_pin: pinmux_P9_29_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsx.gpio3_15 */
+	P9_29_gpio_pin: pinmux_P9_29_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_fsx.gpio3_15 */
+	P9_29_gpio_pu_pin: pinmux_P9_29_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsx.gpio3_15 */
+	P9_29_gpio_pd_pin: pinmux_P9_29_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsx.gpio3_15 */
+	P9_29_gpio_input_pin: pinmux_P9_29_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_fsx.gpio3_15 */
+	P9_29_pwm_pin: pinmux_P9_29_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_fsx.ehrpwm0b */
+	P9_29_spi_pin: pinmux_P9_29_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_fsx.spi1_d0 */
+	P9_29_pruout_pin: pinmux_P9_29_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_fsx.pru0_out1 */
+	P9_29_pruin_pin: pinmux_P9_29_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_fsx.pru0_in1 */
+
+	/* P9_30 (ZCZ ball D12) gpio-hog wl1835 */
+
+	/* P9_31 (ZCZ ball A13) audio */
+	P9_31_default_pin: pinmux_P9_31_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkx.gpio3_14 */
+	P9_31_gpio_pin: pinmux_P9_31_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_aclkx.gpio3_14 */
+	P9_31_gpio_pu_pin: pinmux_P9_31_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkx.gpio3_14 */
+	P9_31_gpio_pd_pin: pinmux_P9_31_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkx.gpio3_14 */
+	P9_31_gpio_input_pin: pinmux_P9_31_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_aclkx.gpio3_14 */
+	P9_31_pwm_pin: pinmux_P9_31_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_aclkx.ehrpwm0a */
+	P9_31_spi_sclk_pin: pinmux_P9_31_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_aclkx.spi1_sclk */
+	P9_31_pruout_pin: pinmux_P9_31_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_aclkx.pru0_out0 */
+	P9_31_pruin_pin: pinmux_P9_31_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_aclkx.pru0_in0 */
+
+	/* P9_32                VADC */
+
+	/* P9_33 (ZCZ ball C8)  AIN4         */
+
+	/* P9_34                AGND */
+
+	/* P9_35 (ZCZ ball A8)  AIN6         */
+
+	/* P9_36 (ZCZ ball B8)  AIN5         */
+
+	/* P9_37 (ZCZ ball B7)  AIN2         */
+
+	/* P9_38 (ZCZ ball A7)  AIN3         */
+
+	/* P9_39 (ZCZ ball B6)  AIN0         */
+
+	/* P9_40 (ZCZ ball C7)  AIN1         */
+
+	/* P9_41 (ZCZ ball D14) gpio0_20 */
+	P9_41_default_pin: pinmux_P9_41_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P9_41_gpio_pin: pinmux_P9_41_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* xdma_event_intr1.gpio0_20 */
+	P9_41_gpio_pu_pin: pinmux_P9_41_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P9_41_gpio_pd_pin: pinmux_P9_41_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P9_41_gpio_input_pin: pinmux_P9_41_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE7) >; };			/* xdma_event_intr1.gpio0_20 */
+	P9_41_timer_pin: pinmux_P9_41_timer_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* xdma_event_intr1.timer7 */
+	P9_41_pruin_pin: pinmux_P9_41_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE5) >; };			/* xdma_event_intr1.pru0_in16 */
+
+	/* P9_41.1 */
+	/* P9_91 (ZCZ ball D13) gpio3_20 */
+	P9_91_default_pin: pinmux_P9_91_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr1.gpio3_20 */
+	P9_91_gpio_pin: pinmux_P9_91_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_axr1.gpio3_20 */
+	P9_91_gpio_pu_pin: pinmux_P9_91_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr1.gpio3_20 */
+	P9_91_gpio_pd_pin: pinmux_P9_91_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr1.gpio3_20 */
+	P9_91_gpio_input_pin: pinmux_P9_91_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_axr1.gpio3_20 */
+	P9_91_qep_pin: pinmux_P9_91_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_axr1.eqep0_index */
+	P9_91_pruout_pin: pinmux_P9_91_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_axr1.pru0_out6 */
+	P9_91_pruin_pin: pinmux_P9_91_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_axr1.pru0_in6 */
+
+	/* P9_42 (ZCZ ball C18) gpio0_7 */
+	P9_42_default_pin: pinmux_P9_42_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_gpio_pin: pinmux_P9_42_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_gpio_pu_pin: pinmux_P9_42_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_gpio_pd_pin: pinmux_P9_42_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_gpio_input_pin: pinmux_P9_42_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_INPUT | MUX_MODE7) >; };			/* eCAP0_in_PWM0_out.gpio0_7 */
+	P9_42_pwm_pin: pinmux_P9_42_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE0) >; };	/* eCAP0_in_PWM0_out.ecap0_in_pwm0_out */
+	P9_42_uart_pin: pinmux_P9_42_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* eCAP0_in_PWM0_out.uart3_txd */
+	P9_42_spi_cs_pin: pinmux_P9_42_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* eCAP0_in_PWM0_out.spi1_cs1 */
+	P9_42_pru_ecap_pin: pinmux_P9_42_pru_ecap_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* eCAP0_in_PWM0_out.pr1_ecap0_ecap_capin_apwm_o */
+	P9_42_spi_sclk_pin: pinmux_P9_42_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* eCAP0_in_PWM0_out.spi1_sclk */
+
+	/* P9_42.1 */
+	/* P9_92 (ZCZ ball B12) gpio3_18 */
+	P9_92_default_pin: pinmux_P9_92_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkr.gpio3_18 */
+	P9_92_gpio_pin: pinmux_P9_92_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_aclkr.gpio3_18 */
+	P9_92_gpio_pu_pin: pinmux_P9_92_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkr.gpio3_18 */
+	P9_92_gpio_pd_pin: pinmux_P9_92_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkr.gpio3_18 */
+	P9_92_gpio_input_pin: pinmux_P9_92_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_aclkr.gpio3_18 */
+	P9_92_qep_pin: pinmux_P9_92_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_aclkr.eqep0a_in */
+	P9_92_pruout_pin: pinmux_P9_92_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_aclkr.pru0_out4 */
+	P9_92_pruin_pin: pinmux_P9_92_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_aclkr.pru0_in4 */
+
+	/* P9_43                GND */
+
+	/* P9_44                GND */
+
+	/* P9_45                GND */
+
+	/* P9_46                GND */
+};
+
+&i2c1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	clock-frequency = <100000>;
+	symlink = "bone/i2c/1";
+};
+
+&i2c2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	clock-frequency = <100000>;
+	symlink = "bone/i2c/2";
+};
+
+&uart1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/1";
+};
+
+&uart2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/2";
+};
+
+&uart3 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/3";
+};
+
+&uart4 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/4";
+};
+
+&uart5 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/uart/5";
+};
+
+&dcan0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/can/0";
+};
+
+&dcan1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/can/1";
+};
+
+&eqep0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/eqep/0";
+};
+
+&eqep1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/eqep/1";
+};
+
+&eqep2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+	symlink = "bone/eqep/2";
+};
+
+&epwmss0 {
+	status = "okay";
+};
+
+&epwmss1 {
+	status = "okay";
+};
+
+&epwmss2 {
+	status = "okay";
+};
+
+&ehrpwm0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ehrpwm1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ehrpwm2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ecap0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ecap1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ecap2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&spi0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	channel@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/0.0";
+
+		reg = <0>;
+		spi-max-frequency = <16000000>;
+		spi-cpha;
+	};
+
+	channel@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/0.1";
+
+		reg = <1>;
+		spi-max-frequency = <16000000>;
+	};
+};
+
+&spi1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	channel@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/1.0";
+
+		reg = <0>;
+		spi-max-frequency = <16000000>;
+		spi-cpha;
+	};
+
+	channel@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/1.1";
+
+		reg = <1>;
+		spi-max-frequency = <16000000>;
+	};
+};
+
+/**********************************************************************/
+/* Pin Multiplex Helpers                                              */
+/*                                                                    */
+/* These provide userspace runtime pin configuration for the          */
+/* BeagleBone cape expansion headers                                  */
+/**********************************************************************/
+
+&ocp {
+	/************************/
+	/* P8 Header */
+	/************************/
+
+	/* P8_01                GND */
+
+	/* P8_02                GND */
+
+
+	/* P8_03 (ZCZ ball R9) emmc */
+	P8_03_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_03_default_pin>;
+		pinctrl-1 = <&P8_03_gpio_pin>;
+		pinctrl-2 = <&P8_03_gpio_pu_pin>;
+		pinctrl-3 = <&P8_03_gpio_pd_pin>;
+		pinctrl-4 = <&P8_03_gpio_input_pin>;
+	};
+
+	/* P8_04 (ZCZ ball T9) emmc */
+	P8_04_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_04_default_pin>;
+		pinctrl-1 = <&P8_04_gpio_pin>;
+		pinctrl-2 = <&P8_04_gpio_pu_pin>;
+		pinctrl-3 = <&P8_04_gpio_pd_pin>;
+		pinctrl-4 = <&P8_04_gpio_input_pin>;
+	};
+
+	/* P8_05 (ZCZ ball R8) emmc */
+	P8_05_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_05_default_pin>;
+		pinctrl-1 = <&P8_05_gpio_pin>;
+		pinctrl-2 = <&P8_05_gpio_pu_pin>;
+		pinctrl-3 = <&P8_05_gpio_pd_pin>;
+		pinctrl-4 = <&P8_05_gpio_input_pin>;
+	};
+
+	/* P8_06 (ZCZ ball T8) emmc */
+	P8_06_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_06_default_pin>;
+		pinctrl-1 = <&P8_06_gpio_pin>;
+		pinctrl-2 = <&P8_06_gpio_pu_pin>;
+		pinctrl-3 = <&P8_06_gpio_pd_pin>;
+		pinctrl-4 = <&P8_06_gpio_input_pin>;
+	};
+
+	/* P8_07 (ZCZ ball R7) */
+	P8_07_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+		pinctrl-0 = <&P8_07_default_pin>;
+		pinctrl-1 = <&P8_07_gpio_pin>;
+		pinctrl-2 = <&P8_07_gpio_pu_pin>;
+		pinctrl-3 = <&P8_07_gpio_pd_pin>;
+		pinctrl-4 = <&P8_07_gpio_input_pin>;
+		pinctrl-5 = <&P8_07_timer_pin>;
+	};
+
+	/* P8_08 (ZCZ ball T7) */
+	P8_08_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+		pinctrl-0 = <&P8_08_default_pin>;
+		pinctrl-1 = <&P8_08_gpio_pin>;
+		pinctrl-2 = <&P8_08_gpio_pu_pin>;
+		pinctrl-3 = <&P8_08_gpio_pd_pin>;
+		pinctrl-4 = <&P8_08_gpio_input_pin>;
+		pinctrl-5 = <&P8_08_timer_pin>;
+	};
+
+	/* P8_09 (ZCZ ball T6) */
+	P8_09_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+		pinctrl-0 = <&P8_09_default_pin>;
+		pinctrl-1 = <&P8_09_gpio_pin>;
+		pinctrl-2 = <&P8_09_gpio_pu_pin>;
+		pinctrl-3 = <&P8_09_gpio_pd_pin>;
+		pinctrl-4 = <&P8_09_gpio_input_pin>;
+		pinctrl-5 = <&P8_09_timer_pin>;
+	};
+
+	/* P8_10 (ZCZ ball U6) */
+	P8_10_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer";
+		pinctrl-0 = <&P8_10_default_pin>;
+		pinctrl-1 = <&P8_10_gpio_pin>;
+		pinctrl-2 = <&P8_10_gpio_pu_pin>;
+		pinctrl-3 = <&P8_10_gpio_pd_pin>;
+		pinctrl-4 = <&P8_10_gpio_input_pin>;
+		pinctrl-5 = <&P8_10_timer_pin>;
+	};
+
+	/* P8_11 (ZCZ ball R12) */
+	P8_11_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+		pinctrl-0 = <&P8_11_default_pin>;
+		pinctrl-1 = <&P8_11_gpio_pin>;
+		pinctrl-2 = <&P8_11_gpio_pu_pin>;
+		pinctrl-3 = <&P8_11_gpio_pd_pin>;
+		pinctrl-4 = <&P8_11_gpio_input_pin>;
+		pinctrl-5 = <&P8_11_qep_pin>;
+		pinctrl-6 = <&P8_11_pruout_pin>;
+	};
+
+	/* P8_12 (ZCZ ball T12) */
+	P8_12_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+		pinctrl-0 = <&P8_12_default_pin>;
+		pinctrl-1 = <&P8_12_gpio_pin>;
+		pinctrl-2 = <&P8_12_gpio_pu_pin>;
+		pinctrl-3 = <&P8_12_gpio_pd_pin>;
+		pinctrl-4 = <&P8_12_gpio_input_pin>;
+		pinctrl-5 = <&P8_12_qep_pin>;
+		pinctrl-6 = <&P8_12_pruout_pin>;
+	};
+
+	/* P8_13 (ZCZ ball T10) */
+	P8_13_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_13_default_pin>;
+		pinctrl-1 = <&P8_13_gpio_pin>;
+		pinctrl-2 = <&P8_13_gpio_pu_pin>;
+		pinctrl-3 = <&P8_13_gpio_pd_pin>;
+		pinctrl-4 = <&P8_13_gpio_input_pin>;
+		pinctrl-5 = <&P8_13_pwm_pin>;
+	};
+
+	/* P8_14 (ZCZ ball T11) wl1835: wl_en */
+
+	/* P8_15 (ZCZ ball U13) */
+	P8_15_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pru_ecap", "pruin";
+		pinctrl-0 = <&P8_15_default_pin>;
+		pinctrl-1 = <&P8_15_gpio_pin>;
+		pinctrl-2 = <&P8_15_gpio_pu_pin>;
+		pinctrl-3 = <&P8_15_gpio_pd_pin>;
+		pinctrl-4 = <&P8_15_gpio_input_pin>;
+		pinctrl-5 = <&P8_15_qep_pin>;
+		pinctrl-6 = <&P8_15_pru_ecap_pin>;
+		pinctrl-7 = <&P8_15_pruin_pin>;
+	};
+
+	/* P8_16 (ZCZ ball V13) */
+	P8_16_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruin";
+		pinctrl-0 = <&P8_16_default_pin>;
+		pinctrl-1 = <&P8_16_gpio_pin>;
+		pinctrl-2 = <&P8_16_gpio_pu_pin>;
+		pinctrl-3 = <&P8_16_gpio_pd_pin>;
+		pinctrl-4 = <&P8_16_gpio_input_pin>;
+		pinctrl-5 = <&P8_16_qep_pin>;
+		pinctrl-6 = <&P8_16_pruin_pin>;
+	};
+
+	/* P8_17 (ZCZ ball U12) wl1835: wl_irq */
+
+	/* P8_18 (ZCZ ball V12) */
+	P8_18_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_18_default_pin>;
+		pinctrl-1 = <&P8_18_gpio_pin>;
+		pinctrl-2 = <&P8_18_gpio_pu_pin>;
+		pinctrl-3 = <&P8_18_gpio_pd_pin>;
+		pinctrl-4 = <&P8_18_gpio_input_pin>;
+	};
+
+	/* P8_19 (ZCZ ball U10) */
+	P8_19_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_19_default_pin>;
+		pinctrl-1 = <&P8_19_gpio_pin>;
+		pinctrl-2 = <&P8_19_gpio_pu_pin>;
+		pinctrl-3 = <&P8_19_gpio_pd_pin>;
+		pinctrl-4 = <&P8_19_gpio_input_pin>;
+		pinctrl-5 = <&P8_19_pwm_pin>;
+	};
+
+	/* P8_20 (ZCZ ball V9) emmc */
+	P8_20_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_20_default_pin>;
+		pinctrl-1 = <&P8_20_gpio_pin>;
+		pinctrl-2 = <&P8_20_gpio_pu_pin>;
+		pinctrl-3 = <&P8_20_gpio_pd_pin>;
+		pinctrl-4 = <&P8_20_gpio_input_pin>;
+		pinctrl-5 = <&P8_20_pruout_pin>;
+		pinctrl-6 = <&P8_20_pruin_pin>;
+	};
+
+	/* P8_21 (ZCZ ball U9) emmc */
+	P8_21_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_21_default_pin>;
+		pinctrl-1 = <&P8_21_gpio_pin>;
+		pinctrl-2 = <&P8_21_gpio_pu_pin>;
+		pinctrl-3 = <&P8_21_gpio_pd_pin>;
+		pinctrl-4 = <&P8_21_gpio_input_pin>;
+		pinctrl-5 = <&P8_21_pruout_pin>;
+		pinctrl-6 = <&P8_21_pruin_pin>;
+	};
+
+	/* P8_22 (ZCZ ball V8) emmc */
+	P8_22_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_22_default_pin>;
+		pinctrl-1 = <&P8_22_gpio_pin>;
+		pinctrl-2 = <&P8_22_gpio_pu_pin>;
+		pinctrl-3 = <&P8_22_gpio_pd_pin>;
+		pinctrl-4 = <&P8_22_gpio_input_pin>;
+	};
+
+	/* P8_23 (ZCZ ball U8) emmc */
+	P8_23_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_23_default_pin>;
+		pinctrl-1 = <&P8_23_gpio_pin>;
+		pinctrl-2 = <&P8_23_gpio_pu_pin>;
+		pinctrl-3 = <&P8_23_gpio_pd_pin>;
+		pinctrl-4 = <&P8_23_gpio_input_pin>;
+	};
+
+	/* P8_24 (ZCZ ball V7) emmc */
+	P8_24_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_24_default_pin>;
+		pinctrl-1 = <&P8_24_gpio_pin>;
+		pinctrl-2 = <&P8_24_gpio_pu_pin>;
+		pinctrl-3 = <&P8_24_gpio_pd_pin>;
+		pinctrl-4 = <&P8_24_gpio_input_pin>;
+	};
+
+	/* P8_25 (ZCZ ball U7) emmc */
+	P8_25_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P8_25_default_pin>;
+		pinctrl-1 = <&P8_25_gpio_pin>;
+		pinctrl-2 = <&P8_25_gpio_pu_pin>;
+		pinctrl-3 = <&P8_25_gpio_pd_pin>;
+		pinctrl-4 = <&P8_25_gpio_input_pin>;
+	};
+
+	/* P8_26 (ZCZ ball V6) gpio-hog wl1835 */
+
+	/* P8_27 (ZCZ ball U5) hdmi */
+	P8_27_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_27_default_pin>;
+		pinctrl-1 = <&P8_27_gpio_pin>;
+		pinctrl-2 = <&P8_27_gpio_pu_pin>;
+		pinctrl-3 = <&P8_27_gpio_pd_pin>;
+		pinctrl-4 = <&P8_27_gpio_input_pin>;
+		pinctrl-5 = <&P8_27_pruout_pin>;
+		pinctrl-6 = <&P8_27_pruin_pin>;
+	};
+
+	/* P8_28 (ZCZ ball V5) hdmi */
+	P8_28_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_28_default_pin>;
+		pinctrl-1 = <&P8_28_gpio_pin>;
+		pinctrl-2 = <&P8_28_gpio_pu_pin>;
+		pinctrl-3 = <&P8_28_gpio_pd_pin>;
+		pinctrl-4 = <&P8_28_gpio_input_pin>;
+		pinctrl-5 = <&P8_28_pruout_pin>;
+		pinctrl-6 = <&P8_28_pruin_pin>;
+	};
+
+	/* P8_29 (ZCZ ball R5) hdmi */
+	P8_29_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_29_default_pin>;
+		pinctrl-1 = <&P8_29_gpio_pin>;
+		pinctrl-2 = <&P8_29_gpio_pu_pin>;
+		pinctrl-3 = <&P8_29_gpio_pd_pin>;
+		pinctrl-4 = <&P8_29_gpio_input_pin>;
+		pinctrl-5 = <&P8_29_pruout_pin>;
+		pinctrl-6 = <&P8_29_pruin_pin>;
+	};
+
+	/* P8_30 (ZCZ ball R6) hdmi */
+	P8_30_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P8_30_default_pin>;
+		pinctrl-1 = <&P8_30_gpio_pin>;
+		pinctrl-2 = <&P8_30_gpio_pu_pin>;
+		pinctrl-3 = <&P8_30_gpio_pd_pin>;
+		pinctrl-4 = <&P8_30_gpio_input_pin>;
+		pinctrl-5 = <&P8_30_pruout_pin>;
+		pinctrl-6 = <&P8_30_pruin_pin>;
+	};
+
+	/* P8_31 (ZCZ ball V4) hdmi */
+	P8_31_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "qep";
+		pinctrl-0 = <&P8_31_default_pin>;
+		pinctrl-1 = <&P8_31_gpio_pin>;
+		pinctrl-2 = <&P8_31_gpio_pu_pin>;
+		pinctrl-3 = <&P8_31_gpio_pd_pin>;
+		pinctrl-4 = <&P8_31_gpio_input_pin>;
+		pinctrl-5 = <&P8_31_uart_pin>;
+		pinctrl-6 = <&P8_31_qep_pin>;
+	};
+
+	/* P8_32 (ZCZ ball T5) hdmi */
+	P8_32_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+		pinctrl-0 = <&P8_32_default_pin>;
+		pinctrl-1 = <&P8_32_gpio_pin>;
+		pinctrl-2 = <&P8_32_gpio_pu_pin>;
+		pinctrl-3 = <&P8_32_gpio_pd_pin>;
+		pinctrl-4 = <&P8_32_gpio_input_pin>;
+		pinctrl-5 = <&P8_32_qep_pin>;
+	};
+
+	/* P8_33 (ZCZ ball V3) hdmi */
+	P8_33_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+		pinctrl-0 = <&P8_33_default_pin>;
+		pinctrl-1 = <&P8_33_gpio_pin>;
+		pinctrl-2 = <&P8_33_gpio_pu_pin>;
+		pinctrl-3 = <&P8_33_gpio_pd_pin>;
+		pinctrl-4 = <&P8_33_gpio_input_pin>;
+		pinctrl-5 = <&P8_33_qep_pin>;
+	};
+
+	/* P8_34 (ZCZ ball U4) hdmi */
+	P8_34_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_34_default_pin>;
+		pinctrl-1 = <&P8_34_gpio_pin>;
+		pinctrl-2 = <&P8_34_gpio_pu_pin>;
+		pinctrl-3 = <&P8_34_gpio_pd_pin>;
+		pinctrl-4 = <&P8_34_gpio_input_pin>;
+		pinctrl-5 = <&P8_34_pwm_pin>;
+	};
+
+	/* P8_35 (ZCZ ball V2) hdmi */
+	P8_35_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+		pinctrl-0 = <&P8_35_default_pin>;
+		pinctrl-1 = <&P8_35_gpio_pin>;
+		pinctrl-2 = <&P8_35_gpio_pu_pin>;
+		pinctrl-3 = <&P8_35_gpio_pd_pin>;
+		pinctrl-4 = <&P8_35_gpio_input_pin>;
+		pinctrl-5 = <&P8_35_qep_pin>;
+	};
+
+	/* P8_36 (ZCZ ball U3) hdmi */
+	P8_36_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P8_36_default_pin>;
+		pinctrl-1 = <&P8_36_gpio_pin>;
+		pinctrl-2 = <&P8_36_gpio_pu_pin>;
+		pinctrl-3 = <&P8_36_gpio_pd_pin>;
+		pinctrl-4 = <&P8_36_gpio_input_pin>;
+		pinctrl-5 = <&P8_36_pwm_pin>;
+	};
+
+	/* P8_37 (ZCZ ball U1) hdmi */
+	P8_37_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "pwm";
+		pinctrl-0 = <&P8_37_default_pin>;
+		pinctrl-1 = <&P8_37_gpio_pin>;
+		pinctrl-2 = <&P8_37_gpio_pu_pin>;
+		pinctrl-3 = <&P8_37_gpio_pd_pin>;
+		pinctrl-4 = <&P8_37_gpio_input_pin>;
+		pinctrl-5 = <&P8_37_uart_pin>;
+		pinctrl-6 = <&P8_37_pwm_pin>;
+	};
+
+	/* P8_38 (ZCZ ball U2) hdmi */
+	P8_38_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "pwm";
+		pinctrl-0 = <&P8_38_default_pin>;
+		pinctrl-1 = <&P8_38_gpio_pin>;
+		pinctrl-2 = <&P8_38_gpio_pu_pin>;
+		pinctrl-3 = <&P8_38_gpio_pd_pin>;
+		pinctrl-4 = <&P8_38_gpio_input_pin>;
+		pinctrl-5 = <&P8_38_uart_pin>;
+		pinctrl-6 = <&P8_38_pwm_pin>;
+	};
+
+	/* P8_39 (ZCZ ball T3) hdmi */
+	P8_39_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P8_39_default_pin>;
+		pinctrl-1 = <&P8_39_gpio_pin>;
+		pinctrl-2 = <&P8_39_gpio_pu_pin>;
+		pinctrl-3 = <&P8_39_gpio_pd_pin>;
+		pinctrl-4 = <&P8_39_gpio_input_pin>;
+		pinctrl-5 = <&P8_39_qep_pin>;
+		pinctrl-6 = <&P8_39_pruout_pin>;
+		pinctrl-7 = <&P8_39_pruin_pin>;
+	};
+
+	/* P8_40 (ZCZ ball T4) hdmi */
+	P8_40_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P8_40_default_pin>;
+		pinctrl-1 = <&P8_40_gpio_pin>;
+		pinctrl-2 = <&P8_40_gpio_pu_pin>;
+		pinctrl-3 = <&P8_40_gpio_pd_pin>;
+		pinctrl-4 = <&P8_40_gpio_input_pin>;
+		pinctrl-5 = <&P8_40_qep_pin>;
+		pinctrl-6 = <&P8_40_pruout_pin>;
+		pinctrl-7 = <&P8_40_pruin_pin>;
+	};
+
+	/* P8_41 (ZCZ ball T1) hdmi */
+	P8_41_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P8_41_default_pin>;
+		pinctrl-1 = <&P8_41_gpio_pin>;
+		pinctrl-2 = <&P8_41_gpio_pu_pin>;
+		pinctrl-3 = <&P8_41_gpio_pd_pin>;
+		pinctrl-4 = <&P8_41_gpio_input_pin>;
+		pinctrl-5 = <&P8_41_qep_pin>;
+		pinctrl-6 = <&P8_41_pruout_pin>;
+		pinctrl-7 = <&P8_41_pruin_pin>;
+	};
+
+	/* P8_42 (ZCZ ball T2) hdmi */
+	P8_42_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P8_42_default_pin>;
+		pinctrl-1 = <&P8_42_gpio_pin>;
+		pinctrl-2 = <&P8_42_gpio_pu_pin>;
+		pinctrl-3 = <&P8_42_gpio_pd_pin>;
+		pinctrl-4 = <&P8_42_gpio_input_pin>;
+		pinctrl-5 = <&P8_42_qep_pin>;
+		pinctrl-6 = <&P8_42_pruout_pin>;
+		pinctrl-7 = <&P8_42_pruin_pin>;
+	};
+
+	/* P8_43 (ZCZ ball R3) hdmi */
+	P8_43_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P8_43_default_pin>;
+		pinctrl-1 = <&P8_43_gpio_pin>;
+		pinctrl-2 = <&P8_43_gpio_pu_pin>;
+		pinctrl-3 = <&P8_43_gpio_pd_pin>;
+		pinctrl-4 = <&P8_43_gpio_input_pin>;
+		pinctrl-5 = <&P8_43_pwm_pin>;
+		pinctrl-6 = <&P8_43_pruout_pin>;
+		pinctrl-7 = <&P8_43_pruin_pin>;
+	};
+
+	/* P8_44 (ZCZ ball R4) hdmi */
+	P8_44_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P8_44_default_pin>;
+		pinctrl-1 = <&P8_44_gpio_pin>;
+		pinctrl-2 = <&P8_44_gpio_pu_pin>;
+		pinctrl-3 = <&P8_44_gpio_pd_pin>;
+		pinctrl-4 = <&P8_44_gpio_input_pin>;
+		pinctrl-5 = <&P8_44_pwm_pin>;
+		pinctrl-6 = <&P8_44_pruout_pin>;
+		pinctrl-7 = <&P8_44_pruin_pin>;
+	};
+
+	/* P8_45 (ZCZ ball R1) hdmi */
+	P8_45_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P8_45_default_pin>;
+		pinctrl-1 = <&P8_45_gpio_pin>;
+		pinctrl-2 = <&P8_45_gpio_pu_pin>;
+		pinctrl-3 = <&P8_45_gpio_pd_pin>;
+		pinctrl-4 = <&P8_45_gpio_input_pin>;
+		pinctrl-5 = <&P8_45_pwm_pin>;
+		pinctrl-6 = <&P8_45_pruout_pin>;
+		pinctrl-7 = <&P8_45_pruin_pin>;
+	};
+
+	/* P8_46 (ZCZ ball R2) hdmi */
+	P8_46_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P8_46_default_pin>;
+		pinctrl-1 = <&P8_46_gpio_pin>;
+		pinctrl-2 = <&P8_46_gpio_pu_pin>;
+		pinctrl-3 = <&P8_46_gpio_pd_pin>;
+		pinctrl-4 = <&P8_46_gpio_input_pin>;
+		pinctrl-5 = <&P8_46_pwm_pin>;
+		pinctrl-6 = <&P8_46_pruout_pin>;
+		pinctrl-7 = <&P8_46_pruin_pin>;
+	};
+
+	/************************/
+	/* P9 Header */
+	/************************/
+
+	/* P9_01                GND */
+
+	/* P9_02                GND */
+
+	/* P9_03                3V3 */
+
+	/* P9_04                3V3 */
+
+	/* P9_05                VDD_5V */
+
+	/* P9_06                VDD_5V */
+
+	/* P9_07                SYS_5V */
+
+	/* P9_08                SYS_5V */
+
+	/* P9_09                PWR_BUT */
+
+	/* P9_10                RSTn */
+
+	/* P9_11 (ZCZ ball T17) */
+	P9_11_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+		pinctrl-0 = <&P9_11_default_pin>;
+		pinctrl-1 = <&P9_11_gpio_pin>;
+		pinctrl-2 = <&P9_11_gpio_pu_pin>;
+		pinctrl-3 = <&P9_11_gpio_pd_pin>;
+		pinctrl-4 = <&P9_11_gpio_input_pin>;
+		pinctrl-5 = <&P9_11_uart_pin>;
+	};
+
+	/* P9_12 (ZCZ ball U18) */
+	P9_12_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P9_12_default_pin>;
+		pinctrl-1 = <&P9_12_gpio_pin>;
+		pinctrl-2 = <&P9_12_gpio_pu_pin>;
+		pinctrl-3 = <&P9_12_gpio_pd_pin>;
+		pinctrl-4 = <&P9_12_gpio_input_pin>;
+	};
+
+	/* P9_13 (ZCZ ball U17) */
+	P9_13_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+		pinctrl-0 = <&P9_13_default_pin>;
+		pinctrl-1 = <&P9_13_gpio_pin>;
+		pinctrl-2 = <&P9_13_gpio_pu_pin>;
+		pinctrl-3 = <&P9_13_gpio_pd_pin>;
+		pinctrl-4 = <&P9_13_gpio_input_pin>;
+		pinctrl-5 = <&P9_13_uart_pin>;
+	};
+
+	/* P9_14 (ZCZ ball U14) */
+	P9_14_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P9_14_default_pin>;
+		pinctrl-1 = <&P9_14_gpio_pin>;
+		pinctrl-2 = <&P9_14_gpio_pu_pin>;
+		pinctrl-3 = <&P9_14_gpio_pd_pin>;
+		pinctrl-4 = <&P9_14_gpio_input_pin>;
+		pinctrl-5 = <&P9_14_pwm_pin>;
+	};
+
+	/* P9_15 (ZCZ ball R13) */
+	P9_15_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P9_15_default_pin>;
+		pinctrl-1 = <&P9_15_gpio_pin>;
+		pinctrl-2 = <&P9_15_gpio_pu_pin>;
+		pinctrl-3 = <&P9_15_gpio_pd_pin>;
+		pinctrl-4 = <&P9_15_gpio_input_pin>;
+		pinctrl-5 = <&P9_15_pwm_pin>;
+	};
+
+	/* P9_16 (ZCZ ball T14) */
+	P9_16_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P9_16_default_pin>;
+		pinctrl-1 = <&P9_16_gpio_pin>;
+		pinctrl-2 = <&P9_16_gpio_pu_pin>;
+		pinctrl-3 = <&P9_16_gpio_pd_pin>;
+		pinctrl-4 = <&P9_16_gpio_input_pin>;
+		pinctrl-5 = <&P9_16_pwm_pin>;
+	};
+
+	/* P9_17 (ZCZ ball A16) */
+	P9_17_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P9_17_default_pin>;
+		pinctrl-1 = <&P9_17_gpio_pin>;
+		pinctrl-2 = <&P9_17_gpio_pu_pin>;
+		pinctrl-3 = <&P9_17_gpio_pd_pin>;
+		pinctrl-4 = <&P9_17_gpio_input_pin>;
+		pinctrl-5 = <&P9_17_spi_cs_pin>;
+		pinctrl-6 = <&P9_17_i2c_pin>;
+		pinctrl-7 = <&P9_17_pwm_pin>;
+		pinctrl-8 = <&P9_17_pru_uart_pin>;
+	};
+
+	/* P9_18 (ZCZ ball B16) */
+	P9_18_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P9_18_default_pin>;
+		pinctrl-1 = <&P9_18_gpio_pin>;
+		pinctrl-2 = <&P9_18_gpio_pu_pin>;
+		pinctrl-3 = <&P9_18_gpio_pd_pin>;
+		pinctrl-4 = <&P9_18_gpio_input_pin>;
+		pinctrl-5 = <&P9_18_spi_pin>;
+		pinctrl-6 = <&P9_18_i2c_pin>;
+		pinctrl-7 = <&P9_18_pwm_pin>;
+		pinctrl-8 = <&P9_18_pru_uart_pin>;
+	};
+
+	/* P9_19 (ZCZ ball D17) i2c */
+	P9_19_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart", "timer";
+		pinctrl-0 = <&P9_19_default_pin>;
+		pinctrl-1 = <&P9_19_gpio_pin>;
+		pinctrl-2 = <&P9_19_gpio_pu_pin>;
+		pinctrl-3 = <&P9_19_gpio_pd_pin>;
+		pinctrl-4 = <&P9_19_gpio_input_pin>;
+		pinctrl-5 = <&P9_19_spi_cs_pin>;
+		pinctrl-6 = <&P9_19_can_pin>;
+		pinctrl-7 = <&P9_19_i2c_pin>;
+		pinctrl-8 = <&P9_19_pru_uart_pin>;
+		pinctrl-9 = <&P9_19_timer_pin>;
+	};
+
+	/* P9_20 (ZCZ ball D18) i2c */
+	P9_20_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart", "timer";
+		pinctrl-0 = <&P9_20_default_pin>;
+		pinctrl-1 = <&P9_20_gpio_pin>;
+		pinctrl-2 = <&P9_20_gpio_pu_pin>;
+		pinctrl-3 = <&P9_20_gpio_pd_pin>;
+		pinctrl-4 = <&P9_20_gpio_input_pin>;
+		pinctrl-5 = <&P9_20_spi_cs_pin>;
+		pinctrl-6 = <&P9_20_can_pin>;
+		pinctrl-7 = <&P9_20_i2c_pin>;
+		pinctrl-8 = <&P9_20_pru_uart_pin>;
+		pinctrl-9 = <&P9_20_timer_pin>;
+	};
+
+	/* P9_21 (ZCZ ball B17) */
+	P9_21_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "uart", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P9_21_default_pin>;
+		pinctrl-1 = <&P9_21_gpio_pin>;
+		pinctrl-2 = <&P9_21_gpio_pu_pin>;
+		pinctrl-3 = <&P9_21_gpio_pd_pin>;
+		pinctrl-4 = <&P9_21_gpio_input_pin>;
+		pinctrl-5 = <&P9_21_spi_pin>;
+		pinctrl-6 = <&P9_21_uart_pin>;
+		pinctrl-7 = <&P9_21_i2c_pin>;
+		pinctrl-8 = <&P9_21_pwm_pin>;
+		pinctrl-9 = <&P9_21_pru_uart_pin>;
+	};
+
+	/* P9_22 (ZCZ ball A17) */
+	P9_22_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "uart", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P9_22_default_pin>;
+		pinctrl-1 = <&P9_22_gpio_pin>;
+		pinctrl-2 = <&P9_22_gpio_pu_pin>;
+		pinctrl-3 = <&P9_22_gpio_pd_pin>;
+		pinctrl-4 = <&P9_22_gpio_input_pin>;
+		pinctrl-5 = <&P9_22_spi_sclk_pin>;
+		pinctrl-6 = <&P9_22_uart_pin>;
+		pinctrl-7 = <&P9_22_i2c_pin>;
+		pinctrl-8 = <&P9_22_pwm_pin>;
+		pinctrl-9 = <&P9_22_pru_uart_pin>;
+	};
+
+	/* P9_23 (ZCZ ball V14) */
+	P9_23_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P9_23_default_pin>;
+		pinctrl-1 = <&P9_23_gpio_pin>;
+		pinctrl-2 = <&P9_23_gpio_pu_pin>;
+		pinctrl-3 = <&P9_23_gpio_pd_pin>;
+		pinctrl-4 = <&P9_23_gpio_input_pin>;
+		pinctrl-5 = <&P9_23_pwm_pin>;
+	};
+
+	/* P9_24 (ZCZ ball D15) */
+	P9_24_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+		pinctrl-0 = <&P9_24_default_pin>;
+		pinctrl-1 = <&P9_24_gpio_pin>;
+		pinctrl-2 = <&P9_24_gpio_pu_pin>;
+		pinctrl-3 = <&P9_24_gpio_pd_pin>;
+		pinctrl-4 = <&P9_24_gpio_input_pin>;
+		pinctrl-5 = <&P9_24_uart_pin>;
+		pinctrl-6 = <&P9_24_can_pin>;
+		pinctrl-7 = <&P9_24_i2c_pin>;
+		pinctrl-8 = <&P9_24_pru_uart_pin>;
+		pinctrl-9 = <&P9_24_pruin_pin>;
+	};
+
+	/* P9_25 (ZCZ ball A14) audio */
+	P9_25_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P9_25_default_pin>;
+		pinctrl-1 = <&P9_25_gpio_pin>;
+		pinctrl-2 = <&P9_25_gpio_pu_pin>;
+		pinctrl-3 = <&P9_25_gpio_pd_pin>;
+		pinctrl-4 = <&P9_25_gpio_input_pin>;
+		pinctrl-5 = <&P9_25_qep_pin>;
+		pinctrl-6 = <&P9_25_pruout_pin>;
+		pinctrl-7 = <&P9_25_pruin_pin>;
+	};
+
+	/* P9_26 (ZCZ ball D16) */
+	P9_26_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+		pinctrl-0 = <&P9_26_default_pin>;
+		pinctrl-1 = <&P9_26_gpio_pin>;
+		pinctrl-2 = <&P9_26_gpio_pu_pin>;
+		pinctrl-3 = <&P9_26_gpio_pd_pin>;
+		pinctrl-4 = <&P9_26_gpio_input_pin>;
+		pinctrl-5 = <&P9_26_uart_pin>;
+		pinctrl-6 = <&P9_26_can_pin>;
+		pinctrl-7 = <&P9_26_i2c_pin>;
+		pinctrl-8 = <&P9_26_pru_uart_pin>;
+		pinctrl-9 = <&P9_26_pruin_pin>;
+	};
+
+	/* P9_27 (ZCZ ball C13) */
+	P9_27_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P9_27_default_pin>;
+		pinctrl-1 = <&P9_27_gpio_pin>;
+		pinctrl-2 = <&P9_27_gpio_pu_pin>;
+		pinctrl-3 = <&P9_27_gpio_pd_pin>;
+		pinctrl-4 = <&P9_27_gpio_input_pin>;
+		pinctrl-5 = <&P9_27_qep_pin>;
+		pinctrl-6 = <&P9_27_pruout_pin>;
+		pinctrl-7 = <&P9_27_pruin_pin>;
+	};
+
+	/* P9_28 (ZCZ ball C12) audio */
+	P9_28_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "pwm", "pwm2", "pruout", "pruin";
+		pinctrl-0 = <&P9_28_default_pin>;
+		pinctrl-1 = <&P9_28_gpio_pin>;
+		pinctrl-2 = <&P9_28_gpio_pu_pin>;
+		pinctrl-3 = <&P9_28_gpio_pd_pin>;
+		pinctrl-4 = <&P9_28_gpio_input_pin>;
+		pinctrl-5 = <&P9_28_spi_cs_pin>;
+		pinctrl-6 = <&P9_28_pwm_pin>;
+		pinctrl-7 = <&P9_28_pwm2_pin>;
+		pinctrl-8 = <&P9_28_pruout_pin>;
+		pinctrl-9 = <&P9_28_pruin_pin>;
+	};
+
+	/* P9_29 (ZCZ ball B13) audio */
+	P9_29_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P9_29_default_pin>;
+		pinctrl-1 = <&P9_29_gpio_pin>;
+		pinctrl-2 = <&P9_29_gpio_pu_pin>;
+		pinctrl-3 = <&P9_29_gpio_pd_pin>;
+		pinctrl-4 = <&P9_29_gpio_input_pin>;
+		pinctrl-5 = <&P9_29_spi_pin>;
+		pinctrl-6 = <&P9_29_pwm_pin>;
+		pinctrl-7 = <&P9_29_pruout_pin>;
+		pinctrl-8 = <&P9_29_pruin_pin>;
+	};
+
+	/* P9_30 (ZCZ ball D12) gpio-hog wl1835 */
+
+	/* P9_31 (ZCZ ball A13) audio */
+	P9_31_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P9_31_default_pin>;
+		pinctrl-1 = <&P9_31_gpio_pin>;
+		pinctrl-2 = <&P9_31_gpio_pu_pin>;
+		pinctrl-3 = <&P9_31_gpio_pd_pin>;
+		pinctrl-4 = <&P9_31_gpio_input_pin>;
+		pinctrl-5 = <&P9_31_spi_sclk_pin>;
+		pinctrl-6 = <&P9_31_pwm_pin>;
+		pinctrl-7 = <&P9_31_pruout_pin>;
+		pinctrl-8 = <&P9_31_pruin_pin>;
+	};
+
+	/* P9_32                VADC */
+
+	/* P9_33 (ZCZ ball C8)  AIN4         */
+
+	/* P9_34                AGND */
+
+	/* P9_35 (ZCZ ball A8)  AIN6         */
+
+	/* P9_36 (ZCZ ball B8)  AIN5         */
+
+	/* P9_37 (ZCZ ball B7)  AIN2         */
+
+	/* P9_38 (ZCZ ball A7)  AIN3         */
+
+	/* P9_39 (ZCZ ball B6)  AIN0         */
+
+	/* P9_40 (ZCZ ball C7)  AIN1         */
+
+	/* P9_41 (ZCZ ball D14) */
+	P9_41_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "timer", "pruin";
+		pinctrl-0 = <&P9_41_default_pin>;
+		pinctrl-1 = <&P9_41_gpio_pin>;
+		pinctrl-2 = <&P9_41_gpio_pu_pin>;
+		pinctrl-3 = <&P9_41_gpio_pd_pin>;
+		pinctrl-4 = <&P9_41_gpio_input_pin>;
+		pinctrl-5 = <&P9_41_timer_pin>;
+		pinctrl-6 = <&P9_41_pruin_pin>;
+	};
+
+	/* P9_41.1 */
+	/* P9_91 (ZCZ ball D13) */
+	P9_91_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P9_91_default_pin>;
+		pinctrl-1 = <&P9_91_gpio_pin>;
+		pinctrl-2 = <&P9_91_gpio_pu_pin>;
+		pinctrl-3 = <&P9_91_gpio_pd_pin>;
+		pinctrl-4 = <&P9_91_gpio_input_pin>;
+		pinctrl-5 = <&P9_91_qep_pin>;
+		pinctrl-6 = <&P9_91_pruout_pin>;
+		pinctrl-7 = <&P9_91_pruin_pin>;
+	};
+
+	/* P9_42 (ZCZ ball C18) */
+	P9_42_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "spi_sclk", "uart", "pwm", "pru_ecap";
+		pinctrl-0 = <&P9_42_default_pin>;
+		pinctrl-1 = <&P9_42_gpio_pin>;
+		pinctrl-2 = <&P9_42_gpio_pu_pin>;
+		pinctrl-3 = <&P9_42_gpio_pd_pin>;
+		pinctrl-4 = <&P9_42_gpio_input_pin>;
+		pinctrl-5 = <&P9_42_spi_cs_pin>;
+		pinctrl-6 = <&P9_42_spi_sclk_pin>;
+		pinctrl-7 = <&P9_42_uart_pin>;
+		pinctrl-8 = <&P9_42_pwm_pin>;
+		pinctrl-9 = <&P9_42_pru_ecap_pin>;
+	};
+
+	/* P9_42.1 */
+	/* P9_92 (ZCZ ball B12) */
+	P9_92_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P9_92_default_pin>;
+		pinctrl-1 = <&P9_92_gpio_pin>;
+		pinctrl-2 = <&P9_92_gpio_pu_pin>;
+		pinctrl-3 = <&P9_92_gpio_pd_pin>;
+		pinctrl-4 = <&P9_92_gpio_input_pin>;
+		pinctrl-5 = <&P9_92_qep_pin>;
+		pinctrl-6 = <&P9_92_pruout_pin>;
+		pinctrl-7 = <&P9_92_pruin_pin>;
+	};
+
+	/* P9_43                GND */
+
+	/* P9_44                GND */
+
+	/* P9_45                GND */
+
+	/* P9_46                GND */
+
+	cape-universal {
+		compatible = "gpio-of-helper";
+		status = "okay";
+		pinctrl-names = "default";
+		pinctrl-0 = <>;
+
+		P8_03 {
+			gpio-name = "P8_03";
+			gpio = <&gpio1 6 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_04 {
+			gpio-name = "P8_04";
+			gpio = <&gpio1 7 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_05 {
+			gpio-name = "P8_05";
+			gpio = <&gpio1 2 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_06 {
+			gpio-name = "P8_06";
+			gpio = <&gpio1 3 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_07 {
+			gpio-name = "P8_07";
+			gpio = <&gpio2 2 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_08 {
+			gpio-name = "P8_08";
+			gpio = <&gpio2 3 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_09 {
+			gpio-name = "P8_09";
+			gpio = <&gpio2 5 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_10 {
+			gpio-name = "P8_10";
+			gpio = <&gpio2 4 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_11 {
+			gpio-name = "P8_11";
+			gpio = <&gpio1 13 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_12 {
+			gpio-name = "P8_12";
+			gpio = <&gpio1 12 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_13 {
+			gpio-name = "P8_13";
+			gpio = <&gpio0 23 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_15 {
+			gpio-name = "P8_15";
+			gpio = <&gpio1 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_16 {
+			gpio-name = "P8_16";
+			gpio = <&gpio1 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_18 {
+			gpio-name = "P8_18";
+			gpio = <&gpio2 1 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_19 {
+			gpio-name = "P8_19";
+			gpio = <&gpio0 22 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_20 {
+			gpio-name = "P8_20";
+			gpio = <&gpio1 31 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_21 {
+			gpio-name = "P8_21";
+			gpio = <&gpio1 30 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_22 {
+			gpio-name = "P8_22";
+			gpio = <&gpio1 5 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_23 {
+			gpio-name = "P8_23";
+			gpio = <&gpio1 4 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_24 {
+			gpio-name = "P8_24";
+			gpio = <&gpio1 1 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_25 {
+			gpio-name = "P8_25";
+			gpio = <&gpio1 0 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_27 {
+			gpio-name = "P8_27";
+			gpio = <&gpio2 22 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_28 {
+			gpio-name = "P8_28";
+			gpio = <&gpio2 24 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_29 {
+			gpio-name = "P8_29";
+			gpio = <&gpio2 23 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_30 {
+			gpio-name = "P8_30";
+			gpio = <&gpio2 25 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_31 {
+			gpio-name = "P8_31";
+			gpio = <&gpio0 10 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_32 {
+			gpio-name = "P8_32";
+			gpio = <&gpio0 11 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_33 {
+			gpio-name = "P8_33";
+			gpio = <&gpio0 9 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_34 {
+			gpio-name = "P8_34";
+			gpio = <&gpio2 17 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_35 {
+			gpio-name = "P8_35";
+			gpio = <&gpio0 8 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_36 {
+			gpio-name = "P8_36";
+			gpio = <&gpio2 16 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_37 {
+			gpio-name = "P8_37";
+			gpio = <&gpio2 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_38 {
+			gpio-name = "P8_38";
+			gpio = <&gpio2 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_39 {
+			gpio-name = "P8_39";
+			gpio = <&gpio2 12 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_40 {
+			gpio-name = "P8_40";
+			gpio = <&gpio2 13 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_41 {
+			gpio-name = "P8_41";
+			gpio = <&gpio2 10 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_42 {
+			gpio-name = "P8_42";
+			gpio = <&gpio2 11 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_43 {
+			gpio-name = "P8_43";
+			gpio = <&gpio2 8 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_44 {
+			gpio-name = "P8_44";
+			gpio = <&gpio2 9 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_45 {
+			gpio-name = "P8_45";
+			gpio = <&gpio2 6 0>;
+			input;
+			dir-changeable;
+		};
+
+		P8_46 {
+			gpio-name = "P8_46";
+			gpio = <&gpio2 7 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_11 {
+			gpio-name = "P9_11";
+			gpio = <&gpio0 30 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_12 {
+			gpio-name = "P9_12";
+			gpio = <&gpio1 28 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_13 {
+			gpio-name = "P9_13";
+			gpio = <&gpio0 31 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_14 {
+			gpio-name = "P9_14";
+			gpio = <&gpio1 18 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_15 {
+			gpio-name = "P9_15";
+			gpio = <&gpio1 16 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_16 {
+			gpio-name = "P9_16";
+			gpio = <&gpio1 19 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_17 {
+			gpio-name = "P9_17";
+			gpio = <&gpio0 5 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_18 {
+			gpio-name = "P9_18";
+			gpio = <&gpio0 4 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_19 {
+			gpio-name = "P9_19";
+			gpio = <&gpio0 13 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_20 {
+			gpio-name = "P9_20";
+			gpio = <&gpio0 12 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_21 {
+			gpio-name = "P9_21";
+			gpio = <&gpio0 3 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_22 {
+			gpio-name = "P9_22";
+			gpio = <&gpio0 2 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_23 {
+			gpio-name = "P9_23";
+			gpio = <&gpio1 17 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_24 {
+			gpio-name = "P9_24";
+			gpio = <&gpio0 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_25 {
+			gpio-name = "P9_25";
+			gpio = <&gpio3 21 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_26 {
+			gpio-name = "P9_26";
+			gpio = <&gpio0 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_27 {
+			gpio-name = "P9_27";
+			gpio = <&gpio3 19 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_28 {
+			gpio-name = "P9_28";
+			gpio = <&gpio3 17 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_29 {
+			gpio-name = "P9_29";
+			gpio = <&gpio3 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_31 {
+			gpio-name = "P9_31";
+			gpio = <&gpio3 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_41 {
+			gpio-name = "P9_41";
+			gpio = <&gpio0 20 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_91 {
+			gpio-name = "P9_91";
+			gpio = <&gpio3 20 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_42 {
+			gpio-name = "P9_42";
+			gpio = <&gpio0 7 0>;
+			input;
+			dir-changeable;
+		};
+
+		P9_92 {
+			gpio-name = "P9_92";
+			gpio = <&gpio3 18 0>;
+			input;
+			dir-changeable;
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bonegreen-wireless.dts b/arch/arm/boot/dts/am335x-bonegreen-wireless.dts
--- a/arch/arm/boot/dts/am335x-bonegreen-wireless.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-bonegreen-wireless.dts	2022-06-12 13:07:42.547111701 -0400
@@ -13,6 +13,11 @@
 	model = "TI AM335x BeagleBone Green Wireless";
 	compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
 
+	chosen {
+		base_dtb = "am335x-bonegreen-wireless.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
+
 	wlan_en_reg: fixedregulator@2 {
 		compatible = "regulator-fixed";
 		regulator-name = "wlan-en-regulator";
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bonegreen-wireless-uboot-univ.dts b/arch/arm/boot/dts/am335x-bonegreen-wireless-uboot-univ.dts
--- a/arch/arm/boot/dts/am335x-bonegreen-wireless-uboot-univ.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/am335x-bonegreen-wireless-uboot-univ.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bonegreen-wireless-common-univ.dtsi"
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+	model = "TI AM335x BeagleBone Green Wireless";
+	compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-bonegreen-wireless-uboot-univ.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
+};
+
+&ldo3_reg {
+	regulator-min-microvolt = <1800000>;
+	regulator-max-microvolt = <1800000>;
+	regulator-always-on;
+};
+
+&mmc1 {
+	vmmc-supply = <&vmmcsd_fixed>;
+};
+
+&gpio1 {
+	ls-buf-en-hog {
+		gpio-hog;
+		gpios = <29 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "LS_BUF_EN";
+	};
+};
+
+/* BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated.*/
+/* in case it isn't, wilink8 ends up in one of the test modes that     */
+/* intruces various issues (elp wkaeup timeouts etc.)                  */
+/* On the BBGW this pin is routed through the level shifter (U21) that */
+/* introduces a pullup on the line and wilink8 ends up in a bad state. */
+/* use a gpio hog to force this pin low. An alternative may be adding  */
+/* an external pulldown on U21 pin 4.                                  */
+
+&gpio3 {
+	bt-aud-in-hog {
+		gpio-hog;
+		gpios = <16 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "MCASP0_AHCLKR";
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-bone-uboot-univ.dts b/arch/arm/boot/dts/am335x-bone-uboot-univ.dts
--- a/arch/arm/boot/dts/am335x-bone-uboot-univ.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/am335x-bone-uboot-univ.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+/dts-v1/;
+
+#include "am33xx.dtsi"
+#include "am335x-bone-common.dtsi"
+#include "am335x-bone-common-univ.dtsi"
+
+/ {
+	model = "TI AM335x BeagleBone";
+	compatible = "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-bone-uboot-univ.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
+};
+
+&ldo3_reg {
+	regulator-min-microvolt = <1800000>;
+	regulator-max-microvolt = <3300000>;
+	regulator-always-on;
+};
+
+&mmc1 {
+	vmmc-supply = <&ldo3_reg>;
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-osd3358-sm-red.dts b/arch/arm/boot/dts/am335x-osd3358-sm-red.dts
--- a/arch/arm/boot/dts/am335x-osd3358-sm-red.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-osd3358-sm-red.dts	2022-06-12 13:07:42.547111701 -0400
@@ -10,13 +10,16 @@
 
 #include "am33xx.dtsi"
 #include "am335x-osd335x-common.dtsi"
-#include <dt-bindings/interrupt-controller/irq.h>
-
-#include <dt-bindings/display/tda998x.h>
+#include "am335x-boneblack-hdmi.dtsi"
 
 / {
 	model = "Octavo Systems OSD3358-SM-RED";
 	compatible = "oct,osd3358-sm-refdesign", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-osd3358-sm-red.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
 
 &ldo3_reg {
@@ -33,48 +36,7 @@
 	status = "okay";
 };
 
-&lcdc {
-	status = "okay";
-
-	/* If you want to get 24 bit RGB and 16 BGR mode instead of
-	 * current 16 bit RGB and 24 BGR modes, set the propety
-	 * below to "crossed" and uncomment the video-ports -property
-	 * in tda19988 node.
-	 * AM335x errata for wiring:
-	 * https://www.ti.com/lit/er/sprz360i/sprz360i.pdf
-	 */
-
-	blue-and-red-wiring = "straight";
-
-	port {
-		lcdc_0: endpoint {
-			remote-endpoint = <&hdmi_0>;
-		};
-	};
-};
-
 &i2c0 {
-	tda19988: hdmi-encoder@70 {
-		compatible = "nxp,tda998x";
-		reg = <0x70>;
-
-		pinctrl-names = "default", "off";
-		pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
-		pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
-
-		/* Convert 24bit BGR to RGB, e.g. cross red and blue wiring */
-		/* video-ports = <0x234501>; */
-
-		#sound-dai-cells = <0>;
-		audio-ports = <	TDA998x_I2S	0x03>;
-
-		port {
-			hdmi_0: endpoint {
-				remote-endpoint = <&lcdc_0>;
-			};
-		};
-	};
-
 	mpu9250: imu@68 {
 		compatible = "invensense,mpu6050";
 		reg = <0x68>;
@@ -84,7 +46,7 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			ax8975@c {
-				compatible = "ak,ak8975";
+				compatible = "asahi-kasei,ak8975";
 				reg = <0x0c>;
 			};
 		};
@@ -101,51 +63,7 @@
 	};
 };
 
-&mcasp0 {
-	#sound-dai-cells = <0>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&mcasp0_pins>;
-	status = "okay";
-	op-mode = <0>;	/* MCASP_IIS_MODE */
-	tdm-slots = <2>;
-	serial-dir = <	/* 0: INACTIVE, 1: TX, 2: RX */
-			0 0 1 0
-		>;
-	tx-num-evt = <32>;
-	rx-num-evt = <32>;
-};
-
 / {
-	clk_mcasp0_fixed: clk-mcasp0-fixed {
-		#clock-cells = <0>;
-		compatible = "fixed-clock";
-		clock-frequency = <24576000>;
-	};
-
-	clk_mcasp0: clk-mcasp0 {
-		#clock-cells = <0>;
-		compatible = "gpio-gate-clock";
-		clocks = <&clk_mcasp0_fixed>;
-		enable-gpios = <&gpio1 27 0>; /* BeagleBone Black Clk enable on GPIO1_27 */
-	};
-
-	sound {
-		compatible = "simple-audio-card";
-		simple-audio-card,name = "TI BeagleBone Black";
-		simple-audio-card,format = "i2s";
-		simple-audio-card,bitclock-master = <&dailink0_master>;
-		simple-audio-card,frame-master = <&dailink0_master>;
-
-		dailink0_master: simple-audio-card,cpu {
-			sound-dai = <&mcasp0>;
-			clocks = <&clk_mcasp0>;
-		};
-
-		simple-audio-card,codec {
-			sound-dai = <&tda19988>;
-		};
-	};
-
 	chosen {
 		stdout-path = &uart0;
 	};
@@ -194,51 +112,6 @@
 };
 
 &am33xx_pinmux {
-	pinctrl-names = "default";
-	pinctrl-0 = <&clkout2_pin>;
-
-	nxp_hdmi_bonelt_pins: nxp-hdmi-bonelt-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE3)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
-		>;
-	};
-
-	nxp_hdmi_bonelt_off_pins: nxp-hdmi-bonelt-off-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE3)
-		>;
-	};
-
-	mcasp0_pins: mcasp0-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKX, PIN_INPUT_PULLUP, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKR, PIN_OUTPUT_PULLDOWN, MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2*/
-			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSX, PIN_OUTPUT_PULLUP, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_GPMC_A11, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_a11.GPIO1_27 */
-		>;
-	};
-
 	flash_enable: flash-enable {
 		pinctrl-single,pins = <
 			AM33XX_PADCONF(AM335X_PIN_RMII1_REF_CLK, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* rmii1_ref_clk.gpio0_29 */
@@ -280,12 +153,6 @@
 		>;
 	};
 
-	clkout2_pin: pinmux-clkout2-pin {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR1, PIN_OUTPUT_PULLDOWN, MUX_MODE3)	/* xdma_event_intr1.clkout2 */
-		>;
-	};
-
 	cpsw_default: cpsw-default {
 		pinctrl-single,pins = <
 			/* Slave 1 */
@@ -372,6 +239,7 @@
 	pinctrl-0 = <&uart0_pins>;
 
 	status = "okay";
+	symlink = "bone/uart/0";
 };
 
 &usb0 {
@@ -389,6 +257,7 @@
 	pinctrl-0 = <&i2c2_pins>;
 	status = "okay";
 	clock-frequency = <100000>;
+	symlink = "bone/i2c/2";
 };
 
 &cpsw_port1 {
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-osd335x-common.dtsi b/arch/arm/boot/dts/am335x-osd335x-common.dtsi
--- a/arch/arm/boot/dts/am335x-osd335x-common.dtsi	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-osd335x-common.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -48,6 +48,7 @@
 
 	status = "okay";
 	clock-frequency = <400000>;
+	symlink = "bone/i2c/0";
 
 	tps: tps@24 {
 		reg = <0x24>;
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-pocketbeagle.dts b/arch/arm/boot/dts/am335x-pocketbeagle.dts
--- a/arch/arm/boot/dts/am335x-pocketbeagle.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-pocketbeagle.dts	2022-06-12 13:07:42.547111701 -0400
@@ -15,6 +15,8 @@
 
 	chosen {
 		stdout-path = &uart0;
+		base_dtb = "am335x-pocketbeagle.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
 	};
 
 	leds {
@@ -204,149 +206,24 @@
 };
 
 &am33xx_pinmux {
-
-	pinctrl-names = "default";
-
-	pinctrl-0 =   < &P2_03_gpio &P1_34_gpio &P2_19_gpio &P2_24_gpio
-			&P2_33_gpio &P2_22_gpio &P2_18_gpio &P2_10_gpio
-			&P2_06_gpio &P2_04_gpio &P2_02_gpio &P2_08_gpio
-			&P2_17_gpio >;
-
-	/* P2_03 (ZCZ ball T10) gpio0_23 0x824 PIN 9 */
-	P2_03_gpio: pinmux_P2_03_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_AD9, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P1_34 (ZCZ ball T11) gpio0_26 0x828 PIN 10 */
-	P1_34_gpio: pinmux_P1_34_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_AD10, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_19 (ZCZ ball U12) gpio0_27 0x82c PIN 11 */
-	P2_19_gpio: pinmux_P2_19_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_AD11, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_24 (ZCZ ball T12) gpio1_12 0x830 PIN 12 */
-	P2_24_gpio: pinmux_P2_24_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_AD12, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_33 (ZCZ ball R12) gpio1_13 0x834 PIN 13 */
-	P2_33_gpio: pinmux_P2_33_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_AD13, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_22 (ZCZ ball V13) gpio1_14 0x838 PIN 14 */
-	P2_22_gpio: pinmux_P2_22_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_18 (ZCZ ball U13) gpio1_15 0x83c PIN 15 */
-	P2_18_gpio: pinmux_P2_18_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_AD15, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_10 (ZCZ ball R14) gpio1_20 0x850 PIN 20 */
-	P2_10_gpio: pinmux_P2_10_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_A4, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_06 (ZCZ ball U16) gpio1_25 0x864 PIN 25 */
-	P2_06_gpio: pinmux_P2_06_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_A9, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_04 (ZCZ ball T16) gpio1_26 0x868 PIN 26 */
-	P2_04_gpio: pinmux_P2_04_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_A10, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_02 (ZCZ ball V17) gpio1_27 0x86c PIN 27 */
-	P2_02_gpio: pinmux_P2_02_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_A11, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	/* P2_08 (ZCZ ball U18) gpio1_28 0x878 PIN 30 */
-	P2_08_gpio: pinmux_P2_08_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_BEN1, PIN_INPUT_PULLDOWN, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x00  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x00  0x00  0x10  0x18>;
-	};
-
-	/* P2_17 (ZCZ ball V12) gpio2_1 0x88c PIN 35 */
-	P2_17_gpio: pinmux_P2_17_gpio {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_CLK, PIN_INPUT_PULLUP, MUX_MODE7)
-		>;
-		pinctrl-single,bias-pullup   =   < 0x10  0x10  0x00  0x18>;
-		pinctrl-single,bias-pulldown   = < 0x10  0x00  0x10  0x18>;
-	};
-
-	i2c2_pins: pinmux-i2c2-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_UART1_RTSN, PIN_INPUT_PULLUP, MUX_MODE3)	/* (D17) uart1_rtsn.I2C2_SCL */
-			AM33XX_PADCONF(AM335X_PIN_UART1_CTSN, PIN_INPUT_PULLUP, MUX_MODE3)	/* (D18) uart1_ctsn.I2C2_SDA */
-		>;
-	};
-
-	ehrpwm0_pins: pinmux-ehrpwm0-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE1)	/* (A13) mcasp0_aclkx.ehrpwm0A */
-		>;
-	};
-
-	ehrpwm1_pins: pinmux-ehrpwm1-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_A2, PIN_OUTPUT_PULLDOWN, MUX_MODE6)	/* (U14) gpmc_a2.ehrpwm1A */
-		>;
-	};
+//	i2c2_pins: pinmux-i2c2-pins {
+//		pinctrl-single,pins = <
+//			AM33XX_PADCONF(AM335X_PIN_UART1_RTSN, PIN_INPUT_PULLUP, MUX_MODE3)	/* (D17) uart1_rtsn.I2C2_SCL */
+//			AM33XX_PADCONF(AM335X_PIN_UART1_CTSN, PIN_INPUT_PULLUP, MUX_MODE3)	/* (D18) uart1_ctsn.I2C2_SDA */
+//		>;
+//	};
+
+//	ehrpwm0_pins: pinmux-ehrpwm0-pins {
+//		pinctrl-single,pins = <
+//			AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE1)	/* (A13) mcasp0_aclkx.ehrpwm0A */
+//		>;
+//	};
+
+//	ehrpwm1_pins: pinmux-ehrpwm1-pins {
+//		pinctrl-single,pins = <
+//			AM33XX_PADCONF(AM335X_PIN_GPMC_A2, PIN_OUTPUT_PULLDOWN, MUX_MODE6)	/* (U14) gpmc_a2.ehrpwm1A */
+//		>;
+//	};
 
 	mmc0_pins: pinmux-mmc0-pins {
 		pinctrl-single,pins = <
@@ -360,23 +237,23 @@
 		>;
 	};
 
-	spi0_pins: pinmux-spi0-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_SPI0_SCLK, PIN_INPUT_PULLUP, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_INPUT_PULLUP, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_SPI0_D1, PIN_INPUT_PULLUP, MUX_MODE0)
-			AM33XX_PADCONF(AM335X_PIN_SPI0_CS0, PIN_INPUT_PULLUP, MUX_MODE0)
-		>;
-	};
-
-	spi1_pins: pinmux-spi1-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_ECAP0_IN_PWM0_OUT, PIN_INPUT_PULLUP, MUX_MODE4)	/* (C18) eCAP0_in_PWM0_out.spi1_sclk */
-			AM33XX_PADCONF(AM335X_PIN_UART0_CTSN, PIN_INPUT_PULLUP, MUX_MODE4)	/* (E18) uart0_ctsn.spi1_d0 */
-			AM33XX_PADCONF(AM335X_PIN_UART0_RTSN, PIN_INPUT_PULLUP, MUX_MODE4)	/* (E17) uart0_rtsn.spi1_d1 */
-			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_INPUT_PULLUP, MUX_MODE4)	/* (A15) xdma_event_intr0.spi1_cs1 */
-		>;
-	};
+//	spi0_pins: pinmux-spi0-pins {
+//		pinctrl-single,pins = <
+//			AM33XX_PADCONF(AM335X_PIN_SPI0_SCLK, PIN_INPUT_PULLUP, MUX_MODE0)	/* (A17) spi0_sclk.spi0_sclk */
+//			AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_INPUT_PULLUP, MUX_MODE0)	/* (B17) spi0_d0.spi0_d0 */
+//			AM33XX_PADCONF(AM335X_PIN_SPI0_D1, PIN_INPUT_PULLUP, MUX_MODE0)	/* (B16) spi0_d1.spi0_d1 */
+//			AM33XX_PADCONF(AM335X_PIN_SPI0_CS0, PIN_INPUT_PULLUP, MUX_MODE0)	/* (A16) spi0_cs0.spi0_cs0 */
+//		>;
+//	};
+
+//	spi1_pins: pinmux-spi1-pins {
+//		pinctrl-single,pins = <
+//			AM33XX_PADCONF(AM335X_PIN_ECAP0_IN_PWM0_OUT, PIN_INPUT_PULLUP, MUX_MODE4)	/* (C18) eCAP0_in_PWM0_out.spi1_sclk */
+//			AM33XX_PADCONF(AM335X_PIN_UART0_CTSN, PIN_INPUT_PULLUP, MUX_MODE4)	/* (E18) uart0_ctsn.spi1_d0 */
+//			AM33XX_PADCONF(AM335X_PIN_UART0_RTSN, PIN_INPUT_PULLUP, MUX_MODE4)	/* (E17) uart0_rtsn.spi1_d1 */
+//			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_INPUT_PULLUP, MUX_MODE4)	/* (A15) xdma_event_intr0.spi1_cs1 */
+//		>;
+//	};
 
 	usr_leds_pins: pinmux-usr-leds-pins {
 		pinctrl-single,pins = <
@@ -394,12 +271,839 @@
 		>;
 	};
 
-	uart4_pins: pinmux-uart4-pins {
-		pinctrl-single,pins = <
-			AM33XX_PADCONF(AM335X_PIN_GPMC_WAIT0, PIN_INPUT_PULLUP, MUX_MODE6)	/* (T17) gpmc_wait0.uart4_rxd */
-			AM33XX_PADCONF(AM335X_PIN_GPMC_WPN, PIN_OUTPUT_PULLDOWN, MUX_MODE6)	/* (U17) gpmc_wpn.uart4_txd */
-		>;
-	};
+//	uart4_pins: pinmux-uart4-pins {
+//		pinctrl-single,pins = <
+//			AM33XX_PADCONF(AM335X_PIN_GPMC_WAIT0, PIN_INPUT_PULLUP, MUX_MODE6)	/* (T17) gpmc_wait0.uart4_rxd */
+//			AM33XX_PADCONF(AM335X_PIN_GPMC_WPN, PIN_OUTPUT_PULLDOWN, MUX_MODE6)	/* (U17) gpmc_wpn.uart4_txd */
+//		>;
+//	};
+
+	/************************/
+	/* P1 Header */
+	/************************/
+
+	/* P1_01                VIN-AC */
+
+	/* P1_02 (ZCZ ball R5) gpio2_23 */
+	P1_02_default_pin: pinmux_P1_02_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_hsync.gpio2_23 */
+	P1_02_gpio_pin: pinmux_P1_02_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_hsync.gpio2_23 */
+	P1_02_gpio_pu_pin: pinmux_P1_02_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_hsync.gpio2_23 */
+	P1_02_gpio_pd_pin: pinmux_P1_02_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_hsync.gpio2_23 */
+	P1_02_gpio_input_pin: pinmux_P1_02_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE7) >; };			/* lcd_hsync.gpio2_23 */
+	P1_02_pruout_pin: pinmux_P1_02_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_hsync.pru1_out9 */
+	P1_02_pruin_pin: pinmux_P1_02_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e4, PIN_INPUT | MUX_MODE6) >; };			/* lcd_hsync.pru1_in9 */
+
+	/* P1_03 (ZCZ ball F15)  usb1_vbus_out         */
+
+	/* P1_04 (ZCZ ball R6) gpio2_25 */
+	P1_04_default_pin: pinmux_P1_04_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P1_04_gpio_pin: pinmux_P1_04_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_ac_bias_en.gpio2_25 */
+	P1_04_gpio_pu_pin: pinmux_P1_04_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P1_04_gpio_pd_pin: pinmux_P1_04_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_ac_bias_en.gpio2_25 */
+	P1_04_gpio_input_pin: pinmux_P1_04_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE7) >; };			/* lcd_ac_bias_en.gpio2_25 */
+	P1_04_pruout_pin: pinmux_P1_04_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_ac_bias_en.pru1_out11 */
+	P1_04_pruin_pin: pinmux_P1_04_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE6) >; };			/* lcd_ac_bias_en.pru1_in11 */
+
+	/* P1_05 (ZCZ ball T18)  usb1_vbus_in         */
+
+	/* P1_06 (ZCZ ball A16) spi0_cs0 */
+	P1_06_default_pin: pinmux_P1_06_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_cs0.spi0_cs0 */
+	P1_06_gpio_pin: pinmux_P1_06_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_cs0.gpio0_5 */
+	P1_06_gpio_pu_pin: pinmux_P1_06_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_cs0.gpio0_5 */
+	P1_06_gpio_pd_pin: pinmux_P1_06_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_cs0.gpio0_5 */
+	P1_06_gpio_input_pin: pinmux_P1_06_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_INPUT | MUX_MODE7) >; };			/* spi0_cs0.gpio0_5 */
+	P1_06_spi_cs_pin: pinmux_P1_06_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_cs0.spi0_cs0 */
+	P1_06_i2c_pin: pinmux_P1_06_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_cs0.i2c1_scl */
+	P1_06_pwm_pin: pinmux_P1_06_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_cs0.ehrpwm0_synci */
+	P1_06_pru_uart_pin: pinmux_P1_06_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x095c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_cs0.pr1_uart0_txd */
+
+	/* P1_07                VIN-USB */
+
+	/* P1_08 (ZCZ ball A17) spi0_sclk */
+	P1_08_default_pin: pinmux_P1_08_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_sclk.spi0_sclk */
+	P1_08_gpio_pin: pinmux_P1_08_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_sclk.gpio0_2 */
+	P1_08_gpio_pu_pin: pinmux_P1_08_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_sclk.gpio0_2 */
+	P1_08_gpio_pd_pin: pinmux_P1_08_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_sclk.gpio0_2 */
+	P1_08_gpio_input_pin: pinmux_P1_08_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_INPUT | MUX_MODE7) >; };			/* spi0_sclk.gpio0_2 */
+	P1_08_spi_sclk_pin: pinmux_P1_08_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_sclk.spi0_sclk */
+	P1_08_uart_pin: pinmux_P1_08_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* spi0_sclk.uart2_rxd */
+	P1_08_i2c_pin: pinmux_P1_08_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_sclk.i2c2_sda */
+	P1_08_pwm_pin: pinmux_P1_08_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_sclk.ehrpwm0a */
+	P1_08_pru_uart_pin: pinmux_P1_08_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0950, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_sclk.pr1_uart0_cts_n */
+
+	/* P1_09 (ZCZ ball R18)  USB1-DN         */
+
+	/* P1_10 (ZCZ ball B17) spi0_d0 */
+	P1_10_default_pin: pinmux_P1_10_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_d0.spi0_d0 */
+	P1_10_gpio_pin: pinmux_P1_10_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_d0.gpio0_3 */
+	P1_10_gpio_pu_pin: pinmux_P1_10_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d0.gpio0_3 */
+	P1_10_gpio_pd_pin: pinmux_P1_10_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_d0.gpio0_3 */
+	P1_10_gpio_input_pin: pinmux_P1_10_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_INPUT | MUX_MODE7) >; };			/* spi0_d0.gpio0_3 */
+	P1_10_spi_pin: pinmux_P1_10_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_d0.spi0_d0 */
+	P1_10_uart_pin: pinmux_P1_10_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* spi0_d0.uart2_txd */
+	P1_10_i2c_pin: pinmux_P1_10_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_d0.i2c2_scl */
+	P1_10_pwm_pin: pinmux_P1_10_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_d0.ehrpwm0b */
+	P1_10_pru_uart_pin: pinmux_P1_10_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0954, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_d0.pr1_uart0_rts_n */
+
+	/* P1_11 (ZCZ ball R17)  USB1-DP         */
+
+	/* P1_12 (ZCZ ball B16) spi0_d1 */
+	P1_12_default_pin: pinmux_P1_12_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_d1.spi0_d1 */
+	P1_12_gpio_pin: pinmux_P1_12_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* spi0_d1.gpio0_4 */
+	P1_12_gpio_pu_pin: pinmux_P1_12_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* spi0_d1.gpio0_4 */
+	P1_12_gpio_pd_pin: pinmux_P1_12_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* spi0_d1.gpio0_4 */
+	P1_12_gpio_input_pin: pinmux_P1_12_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_INPUT | MUX_MODE7) >; };			/* spi0_d1.gpio0_4 */
+	P1_12_spi_pin: pinmux_P1_12_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* spi0_d1.spi0_d1 */
+	P1_12_i2c_pin: pinmux_P1_12_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* spi0_d1.i2c1_sda */
+	P1_12_pwm_pin: pinmux_P1_12_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* spi0_d1.ehrpwm0_tripzone_input */
+	P1_12_pru_uart_pin: pinmux_P1_12_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0958, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* spi0_d1.pr1_uart0_rxd */
+
+	/* P1_13 (ZCZ ball P17)  USB1-ID         */
+
+	/* P1_14                VOUT-3.3V */
+
+	/* P1_15                GND */
+
+	/* P1_16                GND */
+
+	/* P1_17 (ZCZ ball A9)  VREFN         */
+
+	/* P1_18 (ZCZ ball B9)  VREFP         */
+
+	/* P1_19 (ZCZ ball B6)  AIN0         */
+
+	/* P1_20 (ZCZ ball D14) gpio0_20 */
+	P1_20_default_pin: pinmux_P1_20_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P1_20_gpio_pin: pinmux_P1_20_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* xdma_event_intr1.gpio0_20 */
+	P1_20_gpio_pu_pin: pinmux_P1_20_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P1_20_gpio_pd_pin: pinmux_P1_20_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr1.gpio0_20 */
+	P1_20_gpio_input_pin: pinmux_P1_20_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE7) >; };			/* xdma_event_intr1.gpio0_20 */
+	P1_20_pruin_pin: pinmux_P1_20_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b4, PIN_INPUT | MUX_MODE5) >; };			/* xdma_event_intr1.pru0_in16 */
+
+	/* P1_21 (ZCZ ball C7)  AIN1         */
+
+	/* P1_22                GND */
+
+	/* P1_23 (ZCZ ball B7)  AIN2         */
+
+	/* P1_24                VOUT-5V */
+
+	/* P1_25 (ZCZ ball A7)  AIN3         */
+
+	/* P1_26 (ZCZ ball D18) i2c2_sda */
+	P1_26_default_pin: pinmux_P1_26_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_ctsn.i2c2_sda */
+	P1_26_gpio_pin: pinmux_P1_26_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_ctsn.gpio0_12 */
+	P1_26_gpio_pu_pin: pinmux_P1_26_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_ctsn.gpio0_12 */
+	P1_26_gpio_pd_pin: pinmux_P1_26_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_ctsn.gpio0_12 */
+	P1_26_gpio_input_pin: pinmux_P1_26_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_INPUT | MUX_MODE7) >; };			/* uart1_ctsn.gpio0_12 */
+	P1_26_can_pin: pinmux_P1_26_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | MUX_MODE2) >; };		/* uart1_ctsn.dcan0_tx */
+	P1_26_i2c_pin: pinmux_P1_26_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_ctsn.i2c2_sda */
+	P1_26_spi_cs_pin: pinmux_P1_26_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart1_ctsn.spi1_cs0 */
+	P1_26_pru_uart_pin: pinmux_P1_26_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0978, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_ctsn.pr1_uart0_cts_n */
+
+	/* P1_27 (ZCZ ball C8)  AIN4         */
+
+	/* P1_28 (ZCZ ball D17) i2c2_scl */
+	P1_28_default_pin: pinmux_P1_28_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rtsn.i2c2_scl */
+	P1_28_gpio_pin: pinmux_P1_28_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_rtsn.gpio0_13 */
+	P1_28_gpio_pu_pin: pinmux_P1_28_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_rtsn.gpio0_13 */
+	P1_28_gpio_pd_pin: pinmux_P1_28_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_rtsn.gpio0_13 */
+	P1_28_gpio_input_pin: pinmux_P1_28_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_INPUT | MUX_MODE7) >; };			/* uart1_rtsn.gpio0_13 */
+	P1_28_can_pin: pinmux_P1_28_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_INPUT_PULLUP | MUX_MODE2) >; };		/* uart1_rtsn.dcan0_rx */
+	P1_28_i2c_pin: pinmux_P1_28_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rtsn.i2c2_scl */
+	P1_28_spi_cs_pin: pinmux_P1_28_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart1_rtsn.spi1_cs1 */
+	P1_28_pru_uart_pin: pinmux_P1_28_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x097c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_rtsn.pr1_uart0_rts_n */
+
+	/* P1_29 (ZCZ ball A14) pru0_in7 */
+	P1_29_default_pin: pinmux_P1_29_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_ahclkx.pru0_in7 */
+	P1_29_gpio_pin: pinmux_P1_29_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_ahclkx.gpio3_21 */
+	P1_29_gpio_pu_pin: pinmux_P1_29_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkx.gpio3_21 */
+	P1_29_gpio_pd_pin: pinmux_P1_29_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkx.gpio3_21 */
+	P1_29_gpio_input_pin: pinmux_P1_29_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_ahclkx.gpio3_21 */
+	P1_29_qep_pin: pinmux_P1_29_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_ahclkx.eqep0_strobe */
+	P1_29_pruout_pin: pinmux_P1_29_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_ahclkx.pru0_out7 */
+	P1_29_pruin_pin: pinmux_P1_29_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09ac, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_ahclkx.pru0_in7 */
+
+	/* P1_30 (ZCZ ball E16) uart0_txd */
+	P1_30_default_pin: pinmux_P1_30_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart0_txd.uart0_txd */
+	P1_30_gpio_pin: pinmux_P1_30_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart0_txd.gpio1_11 */
+	P1_30_gpio_pu_pin: pinmux_P1_30_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart0_txd.gpio1_11 */
+	P1_30_gpio_pd_pin: pinmux_P1_30_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart0_txd.gpio1_11 */
+	P1_30_gpio_input_pin: pinmux_P1_30_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_INPUT | MUX_MODE7) >; };			/* uart0_txd.gpio1_11 */
+	P1_30_uart_pin: pinmux_P1_30_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart0_txd.uart0_txd */
+	P1_30_spi_cs_pin: pinmux_P1_30_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* uart0_txd.spi1_cs1 */
+	P1_30_can_pin: pinmux_P1_30_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_INPUT_PULLUP | MUX_MODE2) >; };		/* uart0_txd.dcan0_rx */
+	P1_30_i2c_pin: pinmux_P1_30_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart0_txd.i2c2_scl */
+	P1_30_pruout_pin: pinmux_P1_30_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* uart0_txd.pru1_out15 */
+	P1_30_pruin_pin: pinmux_P1_30_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0974, PIN_INPUT | MUX_MODE6) >; };			/* uart0_txd.pru1_in15 */
+
+	/* P1_31 (ZCZ ball B12) pru0_in4 */
+	P1_31_default_pin: pinmux_P1_31_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_aclkr.pru0_in4 */
+	P1_31_gpio_pin: pinmux_P1_31_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_aclkr.gpio3_18 */
+	P1_31_gpio_pu_pin: pinmux_P1_31_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkr.gpio3_18 */
+	P1_31_gpio_pd_pin: pinmux_P1_31_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkr.gpio3_18 */
+	P1_31_gpio_input_pin: pinmux_P1_31_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_aclkr.gpio3_18 */
+	P1_31_qep_pin: pinmux_P1_31_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_aclkr.eqep0a_in */
+	P1_31_pruout_pin: pinmux_P1_31_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_aclkr.pru0_out4 */
+	P1_31_pruin_pin: pinmux_P1_31_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a0, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_aclkr.pru0_in4 */
+
+	/* P1_32 (ZCZ ball E15) uart0_rxd */
+	P1_32_default_pin: pinmux_P1_32_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart0_rxd.uart0_rxd */
+	P1_32_gpio_pin: pinmux_P1_32_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart0_rxd.gpio1_10 */
+	P1_32_gpio_pu_pin: pinmux_P1_32_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart0_rxd.gpio1_10 */
+	P1_32_gpio_pd_pin: pinmux_P1_32_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart0_rxd.gpio1_10 */
+	P1_32_gpio_input_pin: pinmux_P1_32_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_INPUT | MUX_MODE7) >; };			/* uart0_rxd.gpio1_10 */
+	P1_32_uart_pin: pinmux_P1_32_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart0_rxd.uart0_rxd */
+	P1_32_spi_cs_pin: pinmux_P1_32_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* uart0_rxd.spi1_cs0 */
+	P1_32_can_pin: pinmux_P1_32_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | MUX_MODE2) >; };		/* uart0_rxd.dcan0_tx */
+	P1_32_i2c_pin: pinmux_P1_32_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart0_rxd.i2c2_sda */
+	P1_32_pruout_pin: pinmux_P1_32_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* uart0_rxd.pru1_out14 */
+	P1_32_pruin_pin: pinmux_P1_32_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0970, PIN_INPUT | MUX_MODE6) >; };			/* uart0_rxd.pru1_in14 */
+
+	/* P1_33 (ZCZ ball B13) pru0_in1 */
+	P1_33_default_pin: pinmux_P1_33_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_fsx.pru0_in1 */
+	P1_33_gpio_pin: pinmux_P1_33_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_fsx.gpio3_15 */
+	P1_33_gpio_pu_pin: pinmux_P1_33_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsx.gpio3_15 */
+	P1_33_gpio_pd_pin: pinmux_P1_33_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsx.gpio3_15 */
+	P1_33_gpio_input_pin: pinmux_P1_33_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_fsx.gpio3_15 */
+	P1_33_pwm_pin: pinmux_P1_33_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_fsx.ehrpwm0b */
+	P1_33_spi_pin: pinmux_P1_33_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_fsx.spi1_d0 */
+	P1_33_pruout_pin: pinmux_P1_33_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_fsx.pru0_out1 */
+	P1_33_pruin_pin: pinmux_P1_33_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0994, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_fsx.pru0_in1 */
+
+	/* P1_34 (ZCZ ball T11) gpio0_26 */
+	P1_34_default_pin: pinmux_P1_34_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad10.gpio0_26 */
+	P1_34_gpio_pin: pinmux_P1_34_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad10.gpio0_26 */
+	P1_34_gpio_pu_pin: pinmux_P1_34_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad10.gpio0_26 */
+	P1_34_gpio_pd_pin: pinmux_P1_34_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad10.gpio0_26 */
+	P1_34_gpio_input_pin: pinmux_P1_34_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad10.gpio0_26 */
+	P1_34_pwm_pin: pinmux_P1_34_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0828, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad10.ehrpwm2_tripzone_input */
+
+	/* P1_35 (ZCZ ball V5) pru1_in10 */
+	P1_35_default_pin: pinmux_P1_35_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE6) >; };			/* lcd_pclk.pru1_in10 */
+	P1_35_gpio_pin: pinmux_P1_35_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_pclk.gpio2_24 */
+	P1_35_gpio_pu_pin: pinmux_P1_35_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_pclk.gpio2_24 */
+	P1_35_gpio_pd_pin: pinmux_P1_35_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_pclk.gpio2_24 */
+	P1_35_gpio_input_pin: pinmux_P1_35_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE7) >; };			/* lcd_pclk.gpio2_24 */
+	P1_35_pruout_pin: pinmux_P1_35_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_pclk.pru1_out10 */
+	P1_35_pruin_pin: pinmux_P1_35_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e8, PIN_INPUT | MUX_MODE6) >; };			/* lcd_pclk.pru1_in10 */
+
+	/* P1_36 (ZCZ ball A13) ehrpwm0a */
+	P1_36_default_pin: pinmux_P1_36_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_aclkx.ehrpwm0a */
+	P1_36_gpio_pin: pinmux_P1_36_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_aclkx.gpio3_14 */
+	P1_36_gpio_pu_pin: pinmux_P1_36_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkx.gpio3_14 */
+	P1_36_gpio_pd_pin: pinmux_P1_36_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_aclkx.gpio3_14 */
+	P1_36_gpio_input_pin: pinmux_P1_36_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_aclkx.gpio3_14 */
+	P1_36_pwm_pin: pinmux_P1_36_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_aclkx.ehrpwm0a */
+	P1_36_spi_sclk_pin: pinmux_P1_36_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_aclkx.spi1_sclk */
+	P1_36_pruout_pin: pinmux_P1_36_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_aclkx.pru0_out0 */
+	P1_36_pruin_pin: pinmux_P1_36_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0990, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_aclkx.pru0_in0 */
+
+
+	/************************/
+	/* P2 Header */
+	/************************/
+
+	/* P2_01 (ZCZ ball U14) ehrpwm1a */
+	P2_01_default_pin: pinmux_P2_01_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a2.ehrpwm1a */
+	P2_01_gpio_pin: pinmux_P2_01_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a2.gpio1_18 */
+	P2_01_gpio_pu_pin: pinmux_P2_01_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a2.gpio1_18 */
+	P2_01_gpio_pd_pin: pinmux_P2_01_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a2.gpio1_18 */
+	P2_01_gpio_input_pin: pinmux_P2_01_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a2.gpio1_18 */
+	P2_01_pwm_pin: pinmux_P2_01_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0848, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a2.ehrpwm1a */
+
+	/* P2_02 (ZCZ ball V17) gpio1_27 */
+	P2_02_default_pin: pinmux_P2_02_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x086c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a11.gpio1_27 */
+	P2_02_gpio_pin: pinmux_P2_02_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x086c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a11.gpio1_27 */
+	P2_02_gpio_pu_pin: pinmux_P2_02_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x086c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a11.gpio1_27 */
+	P2_02_gpio_pd_pin: pinmux_P2_02_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x086c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a11.gpio1_27 */
+	P2_02_gpio_input_pin: pinmux_P2_02_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x086c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a11.gpio1_27 */
+
+	/* P2_03 (ZCZ ball T10) gpio0_23 */
+	P2_03_default_pin: pinmux_P2_03_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P2_03_gpio_pin: pinmux_P2_03_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad9.gpio0_23 */
+	P2_03_gpio_pu_pin: pinmux_P2_03_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P2_03_gpio_pd_pin: pinmux_P2_03_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad9.gpio0_23 */
+	P2_03_gpio_input_pin: pinmux_P2_03_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad9.gpio0_23 */
+	P2_03_pwm_pin: pinmux_P2_03_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0824, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad9.ehrpwm2b */
+
+	/* P2_04 (ZCZ ball T16) gpio1_26 */
+	P2_04_default_pin: pinmux_P2_04_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0868, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a10.gpio1_26 */
+	P2_04_gpio_pin: pinmux_P2_04_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0868, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a10.gpio1_26 */
+	P2_04_gpio_pu_pin: pinmux_P2_04_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0868, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a10.gpio1_26 */
+	P2_04_gpio_pd_pin: pinmux_P2_04_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0868, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a10.gpio1_26 */
+	P2_04_gpio_input_pin: pinmux_P2_04_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0868, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a10.gpio1_26 */
+
+	/* P2_05 (ZCZ ball T17) uart4_rxd */
+	P2_05_default_pin: pinmux_P2_05_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_wait0.uart4_rxd */
+	P2_05_gpio_pin: pinmux_P2_05_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_wait0.gpio0_30 */
+	P2_05_gpio_pu_pin: pinmux_P2_05_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wait0.gpio0_30 */
+	P2_05_gpio_pd_pin: pinmux_P2_05_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wait0.gpio0_30 */
+	P2_05_gpio_input_pin: pinmux_P2_05_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_wait0.gpio0_30 */
+	P2_05_uart_pin: pinmux_P2_05_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0870, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_wait0.uart4_rxd */
+
+	/* P2_06 (ZCZ ball U16) gpio1_25 */
+	P2_06_default_pin: pinmux_P2_06_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0864, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a9.gpio1_25 */
+	P2_06_gpio_pin: pinmux_P2_06_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0864, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a9.gpio1_25 */
+	P2_06_gpio_pu_pin: pinmux_P2_06_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0864, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a9.gpio1_25 */
+	P2_06_gpio_pd_pin: pinmux_P2_06_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0864, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a9.gpio1_25 */
+	P2_06_gpio_input_pin: pinmux_P2_06_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0864, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a9.gpio1_25 */
+
+	/* P2_07 (ZCZ ball U17) uart4_txd */
+	P2_07_default_pin: pinmux_P2_07_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_wpn.uart4_txd */
+	P2_07_gpio_pin: pinmux_P2_07_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_wpn.gpio0_31 */
+	P2_07_gpio_pu_pin: pinmux_P2_07_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wpn.gpio0_31 */
+	P2_07_gpio_pd_pin: pinmux_P2_07_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_wpn.gpio0_31 */
+	P2_07_gpio_input_pin: pinmux_P2_07_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_wpn.gpio0_31 */
+	P2_07_uart_pin: pinmux_P2_07_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0874, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_wpn.uart4_txd */
+
+	/* P2_08 (ZCZ ball U18) gpio1_28 */
+	P2_08_default_pin: pinmux_P2_08_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P2_08_gpio_pin: pinmux_P2_08_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_be1n.gpio1_28 */
+	P2_08_gpio_pu_pin: pinmux_P2_08_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P2_08_gpio_pd_pin: pinmux_P2_08_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_be1n.gpio1_28 */
+	P2_08_gpio_input_pin: pinmux_P2_08_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0878, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_be1n.gpio1_28 */
+
+	/* P2_09 (ZCZ ball D15) i2c1_scl */
+	P2_09_default_pin: pinmux_P2_09_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_txd.i2c1_scl */
+	P2_09_gpio_pin: pinmux_P2_09_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_txd.gpio0_15 */
+	P2_09_gpio_pu_pin: pinmux_P2_09_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_txd.gpio0_15 */
+	P2_09_gpio_pd_pin: pinmux_P2_09_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_txd.gpio0_15 */
+	P2_09_gpio_input_pin: pinmux_P2_09_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE7) >; };			/* uart1_txd.gpio0_15 */
+	P2_09_uart_pin: pinmux_P2_09_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart1_txd.uart1_txd */
+	P2_09_can_pin: pinmux_P2_09_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT_PULLUP | MUX_MODE2) >; };		/* uart1_txd.dcan1_rx */
+	P2_09_i2c_pin: pinmux_P2_09_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_txd.i2c1_scl */
+	P2_09_pru_uart_pin: pinmux_P2_09_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_txd.pr1_uart0_txd */
+	P2_09_pruin_pin: pinmux_P2_09_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0984, PIN_INPUT | MUX_MODE6) >; };			/* uart1_txd.pru0_in16 */
+
+	/* P2_10 (ZCZ ball R14) gpio1_20 */
+	P2_10_default_pin: pinmux_P2_10_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0850, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a4.gpio1_20 */
+	P2_10_gpio_pin: pinmux_P2_10_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0850, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_a4.gpio1_20 */
+	P2_10_gpio_pu_pin: pinmux_P2_10_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0850, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a4.gpio1_20 */
+	P2_10_gpio_pd_pin: pinmux_P2_10_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0850, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_a4.gpio1_20 */
+	P2_10_gpio_input_pin: pinmux_P2_10_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0850, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_a4.gpio1_20 */
+	P2_10_qep_pin: pinmux_P2_10_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0850, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6) >; };	/* gpmc_a4.eqep1a_in */
+
+	/* P2_11 (ZCZ ball D16) i2c1_sda */
+	P2_11_default_pin: pinmux_P2_11_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rxd.i2c1_sda */
+	P2_11_gpio_pin: pinmux_P2_11_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart1_rxd.gpio0_14 */
+	P2_11_gpio_pu_pin: pinmux_P2_11_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart1_rxd.gpio0_14 */
+	P2_11_gpio_pd_pin: pinmux_P2_11_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart1_rxd.gpio0_14 */
+	P2_11_gpio_input_pin: pinmux_P2_11_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE7) >; };			/* uart1_rxd.gpio0_14 */
+	P2_11_uart_pin: pinmux_P2_11_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE0) >; };	/* uart1_rxd.uart1_rxd */
+	P2_11_can_pin: pinmux_P2_11_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | MUX_MODE2) >; };		/* uart1_rxd.dcan1_tx */
+	P2_11_i2c_pin: pinmux_P2_11_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart1_rxd.i2c1_sda */
+	P2_11_pru_uart_pin: pinmux_P2_11_pru_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart1_rxd.pr1_uart0_rxd */
+	P2_11_pruin_pin: pinmux_P2_11_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0980, PIN_INPUT | MUX_MODE6) >; };			/* uart1_rxd.pru1_in16 */
+
+	/* P2_12                POWER_BUTTON */
+
+	/* P2_13                VOUT-5V */
+
+	/* P2_14                BAT-VIN */
+
+	/* P2_15                GND */
+
+	/* P2_16                BAT-TEMP */
+
+	/* P2_17 (ZCZ ball V12) gpio2_1 */
+	P2_17_default_pin: pinmux_P2_17_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P2_17_gpio_pin: pinmux_P2_17_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_clk.gpio2_1 */
+	P2_17_gpio_pu_pin: pinmux_P2_17_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P2_17_gpio_pd_pin: pinmux_P2_17_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_clk.gpio2_1 */
+	P2_17_gpio_input_pin: pinmux_P2_17_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x088c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_clk.gpio2_1 */
+
+	/* P2_18 (ZCZ ball U13) gpio1_15 */
+	P2_18_default_pin: pinmux_P2_18_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P2_18_gpio_pin: pinmux_P2_18_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad15.gpio1_15 */
+	P2_18_gpio_pu_pin: pinmux_P2_18_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P2_18_gpio_pd_pin: pinmux_P2_18_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad15.gpio1_15 */
+	P2_18_gpio_input_pin: pinmux_P2_18_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad15.gpio1_15 */
+	P2_18_qep_pin: pinmux_P2_18_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad15.eqep2_strobe */
+	P2_18_pru_ecap_pin: pinmux_P2_18_pru_ecap_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* gpmc_ad15.pr1_ecap0_ecap_capin_apwm_o */
+	P2_18_pruin_pin: pinmux_P2_18_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x083c, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_ad15.pru0_in15 */
+
+	/* P2_19 (ZCZ ball U12) gpio0_27 */
+	P2_19_default_pin: pinmux_P2_19_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad11.gpio0_27 */
+	P2_19_gpio_pin: pinmux_P2_19_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad11.gpio0_27 */
+	P2_19_gpio_pu_pin: pinmux_P2_19_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad11.gpio0_27 */
+	P2_19_gpio_pd_pin: pinmux_P2_19_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad11.gpio0_27 */
+	P2_19_gpio_input_pin: pinmux_P2_19_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad11.gpio0_27 */
+	P2_19_pwm_pin: pinmux_P2_19_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x082c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad11.ehrpwm0_synco */
+
+	/* P2_20 (ZCZ ball T13) gpio2_0 */
+	P2_20_default_pin: pinmux_P2_20_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0888, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn3.gpio2_0 */
+	P2_20_gpio_pin: pinmux_P2_20_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0888, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_csn3.gpio2_0 */
+	P2_20_gpio_pu_pin: pinmux_P2_20_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0888, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn3.gpio2_0 */
+	P2_20_gpio_pd_pin: pinmux_P2_20_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0888, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_csn3.gpio2_0 */
+	P2_20_gpio_input_pin: pinmux_P2_20_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0888, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_csn3.gpio2_0 */
+
+	/* P2_21                GND */
+
+	/* P2_22 (ZCZ ball V13) gpio1_14 */
+	P2_22_default_pin: pinmux_P2_22_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P2_22_gpio_pin: pinmux_P2_22_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad14.gpio1_14 */
+	P2_22_gpio_pu_pin: pinmux_P2_22_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P2_22_gpio_pd_pin: pinmux_P2_22_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad14.gpio1_14 */
+	P2_22_gpio_input_pin: pinmux_P2_22_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad14.gpio1_14 */
+	P2_22_qep_pin: pinmux_P2_22_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad14.eqep2_index */
+	P2_22_pruin_pin: pinmux_P2_22_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0838, PIN_INPUT | MUX_MODE6) >; };			/* gpmc_ad14.pru0_in14 */
+
+	/* P2_23                VOUT-3.3V */
+
+	/* P2_24 (ZCZ ball T12) gpio1_12 */
+	P2_24_default_pin: pinmux_P2_24_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P2_24_gpio_pin: pinmux_P2_24_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad12.gpio1_12 */
+	P2_24_gpio_pu_pin: pinmux_P2_24_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P2_24_gpio_pd_pin: pinmux_P2_24_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad12.gpio1_12 */
+	P2_24_gpio_input_pin: pinmux_P2_24_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad12.gpio1_12 */
+	P2_24_qep_pin: pinmux_P2_24_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad12.eqep2a_in */
+	P2_24_pruout_pin: pinmux_P2_24_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0830, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_ad12.pru0_out14 */
+
+	/* P2_25 (ZCZ ball E17) spi1_d1 */
+	P2_25_default_pin: pinmux_P2_25_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart0_rtsn.spi1_d1 */
+	P2_25_gpio_pin: pinmux_P2_25_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart0_rtsn.gpio1_9 */
+	P2_25_gpio_pu_pin: pinmux_P2_25_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart0_rtsn.gpio1_9 */
+	P2_25_gpio_pd_pin: pinmux_P2_25_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart0_rtsn.gpio1_9 */
+	P2_25_gpio_input_pin: pinmux_P2_25_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_INPUT | MUX_MODE7) >; };			/* uart0_rtsn.gpio1_9 */
+	P2_25_uart_pin: pinmux_P2_25_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* uart0_rtsn.uart4_txd */
+	P2_25_can_pin: pinmux_P2_25_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_INPUT_PULLUP | MUX_MODE2) >; };		/* uart0_rtsn.dcan1_rx */
+	P2_25_i2c_pin: pinmux_P2_25_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart0_rtsn.i2c1_scl */
+	P2_25_spi_pin: pinmux_P2_25_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart0_rtsn.spi1_d1 */
+	P2_25_spi_cs_pin: pinmux_P2_25_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x096c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE5) >; };	/* uart0_rtsn.spi1_cs0 */
+
+	/* P2_26                RESET# */
+
+	/* P2_27 (ZCZ ball E18) spi1_d0 */
+	P2_27_default_pin: pinmux_P2_27_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart0_ctsn.spi1_d0 */
+	P2_27_gpio_pin: pinmux_P2_27_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* uart0_ctsn.gpio1_8 */
+	P2_27_gpio_pu_pin: pinmux_P2_27_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* uart0_ctsn.gpio1_8 */
+	P2_27_gpio_pd_pin: pinmux_P2_27_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* uart0_ctsn.gpio1_8 */
+	P2_27_gpio_input_pin: pinmux_P2_27_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_INPUT | MUX_MODE7) >; };			/* uart0_ctsn.gpio1_8 */
+	P2_27_uart_pin: pinmux_P2_27_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* uart0_ctsn.uart4_rxd */
+	P2_27_can_pin: pinmux_P2_27_can_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | MUX_MODE2) >; };		/* uart0_ctsn.dcan1_tx */
+	P2_27_i2c_pin: pinmux_P2_27_i2c_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* uart0_ctsn.i2c1_sda */
+	P2_27_spi_pin: pinmux_P2_27_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0968, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* uart0_ctsn.spi1_d0 */
+
+	/* P2_28 (ZCZ ball D13) pru0_in6 */
+	P2_28_default_pin: pinmux_P2_28_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_axr1.pru0_in6 */
+	P2_28_gpio_pin: pinmux_P2_28_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_axr1.gpio3_20 */
+	P2_28_gpio_pu_pin: pinmux_P2_28_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr1.gpio3_20 */
+	P2_28_gpio_pd_pin: pinmux_P2_28_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr1.gpio3_20 */
+	P2_28_gpio_input_pin: pinmux_P2_28_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_axr1.gpio3_20 */
+	P2_28_qep_pin: pinmux_P2_28_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_axr1.eqep0_index */
+	P2_28_pruout_pin: pinmux_P2_28_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_axr1.pru0_out6 */
+	P2_28_pruin_pin: pinmux_P2_28_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a8, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_axr1.pru0_in6 */
+
+	/* P2_29 (ZCZ ball C18) spi1_sclk */
+	P2_29_default_pin: pinmux_P2_29_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* eCAP0_in_PWM0_out.spi1_sclk */
+	P2_29_gpio_pin: pinmux_P2_29_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* eCAP0_in_PWM0_out.gpio0_7 */
+	P2_29_gpio_pu_pin: pinmux_P2_29_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* eCAP0_in_PWM0_out.gpio0_7 */
+	P2_29_gpio_pd_pin: pinmux_P2_29_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* eCAP0_in_PWM0_out.gpio0_7 */
+	P2_29_gpio_input_pin: pinmux_P2_29_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_INPUT | MUX_MODE7) >; };			/* eCAP0_in_PWM0_out.gpio0_7 */
+	P2_29_pwm_pin: pinmux_P2_29_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE0) >; };	/* eCAP0_in_PWM0_out.ecap0_in_pwm0_out */
+	P2_29_uart_pin: pinmux_P2_29_uart_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* eCAP0_in_PWM0_out.uart3_txd */
+	P2_29_spi_cs_pin: pinmux_P2_29_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE2) >; };	/* eCAP0_in_PWM0_out.spi1_cs1 */
+	P2_29_pru_ecap_pin: pinmux_P2_29_pru_ecap_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE3) >; };	/* eCAP0_in_PWM0_out.pr1_ecap0_ecap_capin_apwm_o */
+	P2_29_spi_sclk_pin: pinmux_P2_29_spi_sclk_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0964, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* eCAP0_in_PWM0_out.spi1_sclk */
+
+	/* P2_30 (ZCZ ball C12) pru0_in3 */
+	P2_30_default_pin: pinmux_P2_30_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_ahclkr.pru0_in3 */
+	P2_30_gpio_pin: pinmux_P2_30_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_ahclkr.gpio3_17 */
+	P2_30_gpio_pu_pin: pinmux_P2_30_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkr.gpio3_17 */
+	P2_30_gpio_pd_pin: pinmux_P2_30_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_ahclkr.gpio3_17 */
+	P2_30_gpio_input_pin: pinmux_P2_30_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_ahclkr.gpio3_17 */
+	P2_30_pwm_pin: pinmux_P2_30_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_ahclkr.ehrpwm0_synci */
+	P2_30_spi_cs_pin: pinmux_P2_30_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_ahclkr.spi1_cs0 */
+	P2_30_pruout_pin: pinmux_P2_30_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_ahclkr.pru0_out3 */
+	P2_30_pruin_pin: pinmux_P2_30_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x099c, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_ahclkr.pru0_in3 */
+
+	/* P2_31 (ZCZ ball A15) spi1_cs1 */
+	P2_31_default_pin: pinmux_P2_31_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* xdma_event_intr0.spi1_cs1 */
+	P2_31_gpio_pin: pinmux_P2_31_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* xdma_event_intr0.gpio0_19 */
+	P2_31_gpio_pu_pin: pinmux_P2_31_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr0.gpio0_19 */
+	P2_31_gpio_pd_pin: pinmux_P2_31_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* xdma_event_intr0.gpio0_19 */
+	P2_31_gpio_input_pin: pinmux_P2_31_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b0, PIN_INPUT | MUX_MODE7) >; };			/* xdma_event_intr0.gpio0_19 */
+	P2_31_spi_cs_pin: pinmux_P2_31_spi_cs_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* xdma_event_intr0.spi1_cs1 */
+	P2_31_pruin_pin: pinmux_P2_31_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09b0, PIN_INPUT | MUX_MODE5) >; };			/* xdma_event_intr0.pru1_in16 */
+
+	/* P2_32 (ZCZ ball D12) pru0_in2 */
+	P2_32_default_pin: pinmux_P2_32_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_axr0.pru0_in2 */
+	P2_32_gpio_pin: pinmux_P2_32_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_axr0.gpio3_16 */
+	P2_32_gpio_pu_pin: pinmux_P2_32_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr0.gpio3_16 */
+	P2_32_gpio_pd_pin: pinmux_P2_32_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_axr0.gpio3_16 */
+	P2_32_gpio_input_pin: pinmux_P2_32_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_axr0.gpio3_16 */
+	P2_32_pwm_pin: pinmux_P2_32_pwm_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_axr0.ehrpwm0_tripzone_input */
+	P2_32_spi_pin: pinmux_P2_32_spi_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE3) >; };	/* mcasp0_axr0.spi1_d1 */
+	P2_32_pruout_pin: pinmux_P2_32_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_axr0.pru0_out2 */
+	P2_32_pruin_pin: pinmux_P2_32_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0998, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_axr0.pru0_in2 */
+
+	/* P2_33 (ZCZ ball R12) gpio1_13 */
+	P2_33_default_pin: pinmux_P2_33_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P2_33_gpio_pin: pinmux_P2_33_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* gpmc_ad13.gpio1_13 */
+	P2_33_gpio_pu_pin: pinmux_P2_33_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P2_33_gpio_pd_pin: pinmux_P2_33_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* gpmc_ad13.gpio1_13 */
+	P2_33_gpio_input_pin: pinmux_P2_33_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_INPUT | MUX_MODE7) >; };			/* gpmc_ad13.gpio1_13 */
+	P2_33_qep_pin: pinmux_P2_33_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE4) >; };	/* gpmc_ad13.eqep2b_in */
+	P2_33_pruout_pin: pinmux_P2_33_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x0834, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE6) >; };	/* gpmc_ad13.pru0_out15 */
+
+	/* P2_34 (ZCZ ball C13) pru0_in5 */
+	P2_34_default_pin: pinmux_P2_34_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_fsr.pru0_in5 */
+	P2_34_gpio_pin: pinmux_P2_34_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* mcasp0_fsr.gpio3_19 */
+	P2_34_gpio_pu_pin: pinmux_P2_34_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsr.gpio3_19 */
+	P2_34_gpio_pd_pin: pinmux_P2_34_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* mcasp0_fsr.gpio3_19 */
+	P2_34_gpio_input_pin: pinmux_P2_34_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE7) >; };			/* mcasp0_fsr.gpio3_19 */
+	P2_34_qep_pin: pinmux_P2_34_qep_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE1) >; };	/* mcasp0_fsr.eqep0b_in */
+	P2_34_pruout_pin: pinmux_P2_34_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* mcasp0_fsr.pru0_out5 */
+	P2_34_pruin_pin: pinmux_P2_34_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x09a4, PIN_INPUT | MUX_MODE6) >; };			/* mcasp0_fsr.pru0_in5 */
+
+	/* P2_35 (ZCZ ball U5) gpio2_22 */
+	P2_35_default_pin: pinmux_P2_35_default_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_vsync.gpio2_22 */
+	P2_35_gpio_pin: pinmux_P2_35_gpio_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT | INPUT_EN | MUX_MODE7) >; };		/* lcd_vsync.gpio2_22 */
+	P2_35_gpio_pu_pin: pinmux_P2_35_gpio_pu_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE7) >; };	/* lcd_vsync.gpio2_22 */
+	P2_35_gpio_pd_pin: pinmux_P2_35_gpio_pd_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE7) >; };	/* lcd_vsync.gpio2_22 */
+	P2_35_gpio_input_pin: pinmux_P2_35_gpio_input_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE7) >; };			/* lcd_vsync.gpio2_22 */
+	P2_35_pruout_pin: pinmux_P2_35_pruout_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_OUTPUT_PULLDOWN | INPUT_EN | MUX_MODE5) >; };	/* lcd_vsync.pru1_out8 */
+	P2_35_pruin_pin: pinmux_P2_35_pruin_pin { pinctrl-single,pins = <
+		AM33XX_IOPAD(0x08e0, PIN_INPUT | MUX_MODE6) >; };			/* lcd_vsync.pru1_in8 */
+
+	/* P2_36 (ZCZ ball C9)  AIN7         */
 };
 
 &epwmss0 {
@@ -409,7 +1113,8 @@
 &ehrpwm0 {
 	status = "okay";
 	pinctrl-names = "default";
-	pinctrl-0 = <&ehrpwm0_pins>;
+	//pinctrl-0 = <&ehrpwm0_pins>;
+	pinctrl-0 = <>;
 };
 
 &epwmss1 {
@@ -419,7 +1124,18 @@
 &ehrpwm1 {
 	status = "okay";
 	pinctrl-names = "default";
-	pinctrl-0 = <&ehrpwm1_pins>;
+	//pinctrl-0 = <&ehrpwm1_pins>;
+	pinctrl-0 = <>;
+};
+
+&epwmss2 {
+	status = "okay";
+};
+
+&ehrpwm2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
 };
 
 &i2c0 {
@@ -429,9 +1145,18 @@
 	};
 };
 
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	status = "okay";
+	clock-frequency = <400000>;
+};
+
 &i2c2 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&i2c2_pins>;
+//	pinctrl-0 = <&i2c2_pins>;
+	pinctrl-0 = <>;
 
 	status = "okay";
 	clock-frequency = <400000>;
@@ -462,14 +1187,30 @@
 
 &uart0 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&uart0_pins>;
+	//pinctrl-0 = <&uart0_pins>;
+	pinctrl-0 = <>;
+
+	status = "okay";
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+
+	status = "okay";
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
 
 	status = "okay";
 };
 
 &uart4 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&uart4_pins>;
+	//pinctrl-0 = <&uart4_pins>;
+	pinctrl-0 = <>;
 
 	status = "okay";
 };
@@ -481,3 +1222,1092 @@
 &usb1 {
 	dr_mode = "host";
 };
+
+&spi0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	channel@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "spidev";
+		symlink = "bone/spi/0.0";
+		reg = <0>;
+		spi-max-frequency = <24000000>;
+	};
+
+	channel@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "spidev";
+		symlink = "bone/spi/0.1";
+		reg = <1>;
+		spi-max-frequency = <24000000>;
+		status = "disabled";
+	};
+};
+
+&spi1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	channel@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "spidev";
+		symlink = "bone/spi/1.0";
+		reg = <0>;
+		spi-max-frequency = <24000000>;
+	};
+
+	channel@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "spidev";
+		symlink = "bone/spi/1.1";
+		reg = <1>;
+		spi-max-frequency = <24000000>;
+	};
+};
+
+&dcan0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&dcan1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <>;
+};
+
+&ocp {
+	/************************/
+	/* P1 Header */
+	/************************/
+
+	/* P1_01                VIN-AC */
+
+	/* P1_02 (ZCZ ball R5) gpio_input */
+	P1_02_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P1_02_default_pin>;
+		pinctrl-1 = <&P1_02_gpio_pin>;
+		pinctrl-2 = <&P1_02_gpio_pu_pin>;
+		pinctrl-3 = <&P1_02_gpio_pd_pin>;
+		pinctrl-4 = <&P1_02_gpio_input_pin>;
+		pinctrl-5 = <&P1_02_pruout_pin>;
+		pinctrl-6 = <&P1_02_pruin_pin>;
+	};
+
+	/* P1_03 (ZCZ ball F15)  usb1_vbus_out         */
+
+	/* P1_04 (ZCZ ball R6) */
+	P1_04_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P1_04_default_pin>;
+		pinctrl-1 = <&P1_04_gpio_pin>;
+		pinctrl-2 = <&P1_04_gpio_pu_pin>;
+		pinctrl-3 = <&P1_04_gpio_pd_pin>;
+		pinctrl-4 = <&P1_04_gpio_input_pin>;
+		pinctrl-5 = <&P1_04_pruout_pin>;
+		pinctrl-6 = <&P1_04_pruin_pin>;
+	};
+
+	/* P1_05 (ZCZ ball T18)  usb1_vbus_in         */
+
+	/* P1_06 (ZCZ ball A16) spi_cs */
+	P1_06_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P1_06_default_pin>;
+		pinctrl-1 = <&P1_06_gpio_pin>;
+		pinctrl-2 = <&P1_06_gpio_pu_pin>;
+		pinctrl-3 = <&P1_06_gpio_pd_pin>;
+		pinctrl-4 = <&P1_06_gpio_input_pin>;
+		pinctrl-5 = <&P1_06_spi_cs_pin>;
+		pinctrl-6 = <&P1_06_i2c_pin>;
+		pinctrl-7 = <&P1_06_pwm_pin>;
+		pinctrl-8 = <&P1_06_pru_uart_pin>;
+	};
+
+	/* P1_07                VIN-USB */
+
+	/* P1_08 (ZCZ ball A17) spi_sclk */
+	P1_08_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "uart", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P1_08_default_pin>;
+		pinctrl-1 = <&P1_08_gpio_pin>;
+		pinctrl-2 = <&P1_08_gpio_pu_pin>;
+		pinctrl-3 = <&P1_08_gpio_pd_pin>;
+		pinctrl-4 = <&P1_08_gpio_input_pin>;
+		pinctrl-5 = <&P1_08_spi_sclk_pin>;
+		pinctrl-6 = <&P1_08_uart_pin>;
+		pinctrl-7 = <&P1_08_i2c_pin>;
+		pinctrl-8 = <&P1_08_pwm_pin>;
+		pinctrl-9 = <&P1_08_pru_uart_pin>;
+	};
+
+	/* P1_09 (ZCZ ball R18)  USB1-DN         */
+
+	/* P1_10 (ZCZ ball B17) spi */
+	P1_10_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "uart", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P1_10_default_pin>;
+		pinctrl-1 = <&P1_10_gpio_pin>;
+		pinctrl-2 = <&P1_10_gpio_pu_pin>;
+		pinctrl-3 = <&P1_10_gpio_pd_pin>;
+		pinctrl-4 = <&P1_10_gpio_input_pin>;
+		pinctrl-5 = <&P1_10_spi_pin>;
+		pinctrl-6 = <&P1_10_uart_pin>;
+		pinctrl-7 = <&P1_10_i2c_pin>;
+		pinctrl-8 = <&P1_10_pwm_pin>;
+		pinctrl-9 = <&P1_10_pru_uart_pin>;
+	};
+
+	/* P1_11 (ZCZ ball R17)  USB1-DP         */
+
+	/* P1_12 (ZCZ ball B16) spi */
+	P1_12_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "i2c", "pwm", "pru_uart";
+		pinctrl-0 = <&P1_12_default_pin>;
+		pinctrl-1 = <&P1_12_gpio_pin>;
+		pinctrl-2 = <&P1_12_gpio_pu_pin>;
+		pinctrl-3 = <&P1_12_gpio_pd_pin>;
+		pinctrl-4 = <&P1_12_gpio_input_pin>;
+		pinctrl-5 = <&P1_12_spi_pin>;
+		pinctrl-6 = <&P1_12_i2c_pin>;
+		pinctrl-7 = <&P1_12_pwm_pin>;
+		pinctrl-8 = <&P1_12_pru_uart_pin>;
+	};
+
+	/* P1_13 (ZCZ ball P17)  USB1-ID         */
+
+	/* P1_14                VOUT-3.3V */
+
+	/* P1_15                GND */
+
+	/* P1_16                GND */
+
+	/* P1_17 (ZCZ ball A9)  VREFN         */
+
+	/* P1_18 (ZCZ ball B9)  VREFP         */
+
+	/* P1_19 (ZCZ ball B6)  AIN0         */
+
+	/* P1_20 (ZCZ ball D14) */
+	P1_20_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruin";
+		pinctrl-0 = <&P1_20_default_pin>;
+		pinctrl-1 = <&P1_20_gpio_pin>;
+		pinctrl-2 = <&P1_20_gpio_pu_pin>;
+		pinctrl-3 = <&P1_20_gpio_pd_pin>;
+		pinctrl-4 = <&P1_20_gpio_input_pin>;
+		pinctrl-5 = <&P1_20_pruin_pin>;
+	};
+
+	/* P1_21 (ZCZ ball C7)  AIN1         */
+
+	/* P1_22                GND */
+
+	/* P1_23 (ZCZ ball B7)  AIN2         */
+
+	/* P1_24                VOUT-5V */
+
+	/* P1_25 (ZCZ ball A7)  AIN3         */
+
+	/* P1_26 (ZCZ ball D18) i2c */
+	P1_26_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart";
+		pinctrl-0 = <&P1_26_default_pin>;
+		pinctrl-1 = <&P1_26_gpio_pin>;
+		pinctrl-2 = <&P1_26_gpio_pu_pin>;
+		pinctrl-3 = <&P1_26_gpio_pd_pin>;
+		pinctrl-4 = <&P1_26_gpio_input_pin>;
+		pinctrl-5 = <&P1_26_spi_cs_pin>;
+		pinctrl-6 = <&P1_26_can_pin>;
+		pinctrl-7 = <&P1_26_i2c_pin>;
+		pinctrl-8 = <&P1_26_pru_uart_pin>;
+	};
+
+	/* P1_27 (ZCZ ball C8)  AIN4         */
+
+	/* P1_28 (ZCZ ball D17) i2c */
+	P1_28_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "can", "i2c", "pru_uart";
+		pinctrl-0 = <&P1_28_default_pin>;
+		pinctrl-1 = <&P1_28_gpio_pin>;
+		pinctrl-2 = <&P1_28_gpio_pu_pin>;
+		pinctrl-3 = <&P1_28_gpio_pd_pin>;
+		pinctrl-4 = <&P1_28_gpio_input_pin>;
+		pinctrl-5 = <&P1_28_spi_cs_pin>;
+		pinctrl-6 = <&P1_28_can_pin>;
+		pinctrl-7 = <&P1_28_i2c_pin>;
+		pinctrl-8 = <&P1_28_pru_uart_pin>;
+	};
+
+	/* P1_29 (ZCZ ball A14) pruin */
+	P1_29_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P1_29_default_pin>;
+		pinctrl-1 = <&P1_29_gpio_pin>;
+		pinctrl-2 = <&P1_29_gpio_pu_pin>;
+		pinctrl-3 = <&P1_29_gpio_pd_pin>;
+		pinctrl-4 = <&P1_29_gpio_input_pin>;
+		pinctrl-5 = <&P1_29_qep_pin>;
+		pinctrl-6 = <&P1_29_pruout_pin>;
+		pinctrl-7 = <&P1_29_pruin_pin>;
+	};
+
+	/* P1_30 (ZCZ ball E16) uart */
+	P1_30_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "uart", "can", "i2c", "pruout", "pruin";
+		pinctrl-0 = <&P1_30_default_pin>;
+		pinctrl-1 = <&P1_30_gpio_pin>;
+		pinctrl-2 = <&P1_30_gpio_pu_pin>;
+		pinctrl-3 = <&P1_30_gpio_pd_pin>;
+		pinctrl-4 = <&P1_30_gpio_input_pin>;
+		pinctrl-5 = <&P1_30_spi_cs_pin>;
+		pinctrl-6 = <&P1_30_uart_pin>;
+		pinctrl-7 = <&P1_30_can_pin>;
+		pinctrl-8 = <&P1_30_i2c_pin>;
+		pinctrl-9 = <&P1_30_pruout_pin>;
+		pinctrl-10 = <&P1_30_pruin_pin>;
+	};
+
+	/* P1_31 (ZCZ ball B12) pruin */
+	P1_31_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P1_31_default_pin>;
+		pinctrl-1 = <&P1_31_gpio_pin>;
+		pinctrl-2 = <&P1_31_gpio_pu_pin>;
+		pinctrl-3 = <&P1_31_gpio_pd_pin>;
+		pinctrl-4 = <&P1_31_gpio_input_pin>;
+		pinctrl-5 = <&P1_31_qep_pin>;
+		pinctrl-6 = <&P1_31_pruout_pin>;
+		pinctrl-7 = <&P1_31_pruin_pin>;
+	};
+
+	/* P1_32 (ZCZ ball E15) uart */
+	P1_32_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "uart", "can", "i2c", "pruout", "pruin";
+		pinctrl-0 = <&P1_32_default_pin>;
+		pinctrl-1 = <&P1_32_gpio_pin>;
+		pinctrl-2 = <&P1_32_gpio_pu_pin>;
+		pinctrl-3 = <&P1_32_gpio_pd_pin>;
+		pinctrl-4 = <&P1_32_gpio_input_pin>;
+		pinctrl-5 = <&P1_32_spi_cs_pin>;
+		pinctrl-6 = <&P1_32_uart_pin>;
+		pinctrl-7 = <&P1_32_can_pin>;
+		pinctrl-8 = <&P1_32_i2c_pin>;
+		pinctrl-9 = <&P1_32_pruout_pin>;
+		pinctrl-10 = <&P1_32_pruin_pin>;
+	};
+
+	/* P1_33 (ZCZ ball B13) pruin */
+	P1_33_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P1_33_default_pin>;
+		pinctrl-1 = <&P1_33_gpio_pin>;
+		pinctrl-2 = <&P1_33_gpio_pu_pin>;
+		pinctrl-3 = <&P1_33_gpio_pd_pin>;
+		pinctrl-4 = <&P1_33_gpio_input_pin>;
+		pinctrl-5 = <&P1_33_spi_pin>;
+		pinctrl-6 = <&P1_33_pwm_pin>;
+		pinctrl-7 = <&P1_33_pruout_pin>;
+		pinctrl-8 = <&P1_33_pruin_pin>;
+	};
+
+	/* P1_34 (ZCZ ball T11) */
+	P1_34_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P1_34_default_pin>;
+		pinctrl-1 = <&P1_34_gpio_pin>;
+		pinctrl-2 = <&P1_34_gpio_pu_pin>;
+		pinctrl-3 = <&P1_34_gpio_pd_pin>;
+		pinctrl-4 = <&P1_34_gpio_input_pin>;
+		pinctrl-5 = <&P1_34_pwm_pin>;
+	};
+
+	/* P1_35 (ZCZ ball V5) pruin */
+	P1_35_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P1_35_default_pin>;
+		pinctrl-1 = <&P1_35_gpio_pin>;
+		pinctrl-2 = <&P1_35_gpio_pu_pin>;
+		pinctrl-3 = <&P1_35_gpio_pd_pin>;
+		pinctrl-4 = <&P1_35_gpio_input_pin>;
+		pinctrl-5 = <&P1_35_pruout_pin>;
+		pinctrl-6 = <&P1_35_pruin_pin>;
+	};
+
+	/* P1_36 (ZCZ ball A13) pwm */
+	P1_36_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_sclk", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P1_36_default_pin>;
+		pinctrl-1 = <&P1_36_gpio_pin>;
+		pinctrl-2 = <&P1_36_gpio_pu_pin>;
+		pinctrl-3 = <&P1_36_gpio_pd_pin>;
+		pinctrl-4 = <&P1_36_gpio_input_pin>;
+		pinctrl-5 = <&P1_36_spi_sclk_pin>;
+		pinctrl-6 = <&P1_36_pwm_pin>;
+		pinctrl-7 = <&P1_36_pruout_pin>;
+		pinctrl-8 = <&P1_36_pruin_pin>;
+	};
+
+
+	/************************/
+	/* P2 Header */
+	/************************/
+
+	/* P2_01 (ZCZ ball U14) pwm */
+	P2_01_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P2_01_default_pin>;
+		pinctrl-1 = <&P2_01_gpio_pin>;
+		pinctrl-2 = <&P2_01_gpio_pu_pin>;
+		pinctrl-3 = <&P2_01_gpio_pd_pin>;
+		pinctrl-4 = <&P2_01_gpio_input_pin>;
+		pinctrl-5 = <&P2_01_pwm_pin>;
+	};
+
+	/* P2_02 (ZCZ ball V17) */
+	P2_02_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P2_02_default_pin>;
+		pinctrl-1 = <&P2_02_gpio_pin>;
+		pinctrl-2 = <&P2_02_gpio_pu_pin>;
+		pinctrl-3 = <&P2_02_gpio_pd_pin>;
+		pinctrl-4 = <&P2_02_gpio_input_pin>;
+	};
+
+	/* P2_03 (ZCZ ball T10) */
+	P2_03_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P2_03_default_pin>;
+		pinctrl-1 = <&P2_03_gpio_pin>;
+		pinctrl-2 = <&P2_03_gpio_pu_pin>;
+		pinctrl-3 = <&P2_03_gpio_pd_pin>;
+		pinctrl-4 = <&P2_03_gpio_input_pin>;
+		pinctrl-5 = <&P2_03_pwm_pin>;
+	};
+
+	/* P2_04 (ZCZ ball T16) */
+	P2_04_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P2_04_default_pin>;
+		pinctrl-1 = <&P2_04_gpio_pin>;
+		pinctrl-2 = <&P2_04_gpio_pu_pin>;
+		pinctrl-3 = <&P2_04_gpio_pd_pin>;
+		pinctrl-4 = <&P2_04_gpio_input_pin>;
+	};
+
+	/* P2_05 (ZCZ ball T17) uart */
+	P2_05_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+		pinctrl-0 = <&P2_05_default_pin>;
+		pinctrl-1 = <&P2_05_gpio_pin>;
+		pinctrl-2 = <&P2_05_gpio_pu_pin>;
+		pinctrl-3 = <&P2_05_gpio_pd_pin>;
+		pinctrl-4 = <&P2_05_gpio_input_pin>;
+		pinctrl-5 = <&P2_05_uart_pin>;
+	};
+
+	/* P2_06 (ZCZ ball U16) */
+	P2_06_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P2_06_default_pin>;
+		pinctrl-1 = <&P2_06_gpio_pin>;
+		pinctrl-2 = <&P2_06_gpio_pu_pin>;
+		pinctrl-3 = <&P2_06_gpio_pd_pin>;
+		pinctrl-4 = <&P2_06_gpio_input_pin>;
+	};
+
+	/* P2_07 (ZCZ ball U17) uart */
+	P2_07_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart";
+		pinctrl-0 = <&P2_07_default_pin>;
+		pinctrl-1 = <&P2_07_gpio_pin>;
+		pinctrl-2 = <&P2_07_gpio_pu_pin>;
+		pinctrl-3 = <&P2_07_gpio_pd_pin>;
+		pinctrl-4 = <&P2_07_gpio_input_pin>;
+		pinctrl-5 = <&P2_07_uart_pin>;
+	};
+
+	/* P2_08 (ZCZ ball U18) */
+	P2_08_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P2_08_default_pin>;
+		pinctrl-1 = <&P2_08_gpio_pin>;
+		pinctrl-2 = <&P2_08_gpio_pu_pin>;
+		pinctrl-3 = <&P2_08_gpio_pd_pin>;
+		pinctrl-4 = <&P2_08_gpio_input_pin>;
+	};
+
+	/* P2_09 (ZCZ ball D15) i2c */
+	P2_09_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+		pinctrl-0 = <&P2_09_default_pin>;
+		pinctrl-1 = <&P2_09_gpio_pin>;
+		pinctrl-2 = <&P2_09_gpio_pu_pin>;
+		pinctrl-3 = <&P2_09_gpio_pd_pin>;
+		pinctrl-4 = <&P2_09_gpio_input_pin>;
+		pinctrl-5 = <&P2_09_uart_pin>;
+		pinctrl-6 = <&P2_09_can_pin>;
+		pinctrl-7 = <&P2_09_i2c_pin>;
+		pinctrl-8 = <&P2_09_pru_uart_pin>;
+		pinctrl-9 = <&P2_09_pruin_pin>;
+	};
+
+	/* P2_10 (ZCZ ball R14) */
+	P2_10_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep";
+		pinctrl-0 = <&P2_10_default_pin>;
+		pinctrl-1 = <&P2_10_gpio_pin>;
+		pinctrl-2 = <&P2_10_gpio_pu_pin>;
+		pinctrl-3 = <&P2_10_gpio_pd_pin>;
+		pinctrl-4 = <&P2_10_gpio_input_pin>;
+		pinctrl-5 = <&P2_10_qep_pin>;
+	};
+
+	/* P2_11 (ZCZ ball D16) i2c */
+	P2_11_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "uart", "can", "i2c", "pru_uart", "pruin";
+		pinctrl-0 = <&P2_11_default_pin>;
+		pinctrl-1 = <&P2_11_gpio_pin>;
+		pinctrl-2 = <&P2_11_gpio_pu_pin>;
+		pinctrl-3 = <&P2_11_gpio_pd_pin>;
+		pinctrl-4 = <&P2_11_gpio_input_pin>;
+		pinctrl-5 = <&P2_11_uart_pin>;
+		pinctrl-6 = <&P2_11_can_pin>;
+		pinctrl-7 = <&P2_11_i2c_pin>;
+		pinctrl-8 = <&P2_11_pru_uart_pin>;
+		pinctrl-9 = <&P2_11_pruin_pin>;
+	};
+
+	/* P2_12                POWER_BUTTON */
+
+	/* P2_13                VOUT-5V */
+
+	/* P2_14                BAT-VIN */
+
+	/* P2_15                GND */
+
+	/* P2_16                BAT-TEMP */
+
+	/* P2_17 (ZCZ ball V12) */
+	P2_17_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P2_17_default_pin>;
+		pinctrl-1 = <&P2_17_gpio_pin>;
+		pinctrl-2 = <&P2_17_gpio_pu_pin>;
+		pinctrl-3 = <&P2_17_gpio_pd_pin>;
+		pinctrl-4 = <&P2_17_gpio_input_pin>;
+	};
+
+	/* P2_18 (ZCZ ball U13) */
+	P2_18_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pru_ecap", "pruin";
+		pinctrl-0 = <&P2_18_default_pin>;
+		pinctrl-1 = <&P2_18_gpio_pin>;
+		pinctrl-2 = <&P2_18_gpio_pu_pin>;
+		pinctrl-3 = <&P2_18_gpio_pd_pin>;
+		pinctrl-4 = <&P2_18_gpio_input_pin>;
+		pinctrl-5 = <&P2_18_qep_pin>;
+		pinctrl-6 = <&P2_18_pru_ecap_pin>;
+		pinctrl-7 = <&P2_18_pruin_pin>;
+	};
+
+	/* P2_19 (ZCZ ball U12) */
+	P2_19_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pwm";
+		pinctrl-0 = <&P2_19_default_pin>;
+		pinctrl-1 = <&P2_19_gpio_pin>;
+		pinctrl-2 = <&P2_19_gpio_pu_pin>;
+		pinctrl-3 = <&P2_19_gpio_pd_pin>;
+		pinctrl-4 = <&P2_19_gpio_input_pin>;
+		pinctrl-5 = <&P2_19_pwm_pin>;
+	};
+
+	/* P2_20 (ZCZ ball T13) */
+	P2_20_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input";
+		pinctrl-0 = <&P2_20_default_pin>;
+		pinctrl-1 = <&P2_20_gpio_pin>;
+		pinctrl-2 = <&P2_20_gpio_pu_pin>;
+		pinctrl-3 = <&P2_20_gpio_pd_pin>;
+		pinctrl-4 = <&P2_20_gpio_input_pin>;
+	};
+
+	/* P2_21                GND */
+
+	/* P2_22 (ZCZ ball V13) */
+	P2_22_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruin";
+		pinctrl-0 = <&P2_22_default_pin>;
+		pinctrl-1 = <&P2_22_gpio_pin>;
+		pinctrl-2 = <&P2_22_gpio_pu_pin>;
+		pinctrl-3 = <&P2_22_gpio_pd_pin>;
+		pinctrl-4 = <&P2_22_gpio_input_pin>;
+		pinctrl-5 = <&P2_22_qep_pin>;
+		pinctrl-6 = <&P2_22_pruin_pin>;
+	};
+
+	/* P2_23                VOUT-3.3V */
+
+	/* P2_24 (ZCZ ball T12) */
+	P2_24_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+		pinctrl-0 = <&P2_24_default_pin>;
+		pinctrl-1 = <&P2_24_gpio_pin>;
+		pinctrl-2 = <&P2_24_gpio_pu_pin>;
+		pinctrl-3 = <&P2_24_gpio_pd_pin>;
+		pinctrl-4 = <&P2_24_gpio_input_pin>;
+		pinctrl-5 = <&P2_24_qep_pin>;
+		pinctrl-6 = <&P2_24_pruout_pin>;
+	};
+
+	/* P2_25 (ZCZ ball E17) spi */
+	P2_25_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "spi_cs", "uart", "can", "i2c";
+		pinctrl-0 = <&P2_25_default_pin>;
+		pinctrl-1 = <&P2_25_gpio_pin>;
+		pinctrl-2 = <&P2_25_gpio_pu_pin>;
+		pinctrl-3 = <&P2_25_gpio_pd_pin>;
+		pinctrl-4 = <&P2_25_gpio_input_pin>;
+		pinctrl-5 = <&P2_25_spi_pin>;
+		pinctrl-6 = <&P2_25_spi_cs_pin>;
+		pinctrl-7 = <&P2_25_uart_pin>;
+		pinctrl-8 = <&P2_25_can_pin>;
+		pinctrl-9 = <&P2_25_i2c_pin>;
+	};
+
+	/* P2_26                RESET# */
+
+	/* P2_27 (ZCZ ball E18) spi */
+	P2_27_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "uart", "can", "i2c";
+		pinctrl-0 = <&P2_27_default_pin>;
+		pinctrl-1 = <&P2_27_gpio_pin>;
+		pinctrl-2 = <&P2_27_gpio_pu_pin>;
+		pinctrl-3 = <&P2_27_gpio_pd_pin>;
+		pinctrl-4 = <&P2_27_gpio_input_pin>;
+		pinctrl-5 = <&P2_27_spi_pin>;
+		pinctrl-6 = <&P2_27_uart_pin>;
+		pinctrl-7 = <&P2_27_can_pin>;
+		pinctrl-8 = <&P2_27_i2c_pin>;
+	};
+
+	/* P2_28 (ZCZ ball D13) pruin */
+	P2_28_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P2_28_default_pin>;
+		pinctrl-1 = <&P2_28_gpio_pin>;
+		pinctrl-2 = <&P2_28_gpio_pu_pin>;
+		pinctrl-3 = <&P2_28_gpio_pd_pin>;
+		pinctrl-4 = <&P2_28_gpio_input_pin>;
+		pinctrl-5 = <&P2_28_qep_pin>;
+		pinctrl-6 = <&P2_28_pruout_pin>;
+		pinctrl-7 = <&P2_28_pruin_pin>;
+	};
+
+	/* P2_29 (ZCZ ball C18) spi_sclk */
+	P2_29_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "spi_sclk", "uart", "pwm", "pru_ecap";
+		pinctrl-0 = <&P2_29_default_pin>;
+		pinctrl-1 = <&P2_29_gpio_pin>;
+		pinctrl-2 = <&P2_29_gpio_pu_pin>;
+		pinctrl-3 = <&P2_29_gpio_pd_pin>;
+		pinctrl-4 = <&P2_29_gpio_input_pin>;
+		pinctrl-5 = <&P2_29_spi_cs_pin>;
+		pinctrl-6 = <&P2_29_spi_sclk_pin>;
+		pinctrl-7 = <&P2_29_uart_pin>;
+		pinctrl-8 = <&P2_29_pwm_pin>;
+		pinctrl-9 = <&P2_29_pru_ecap_pin>;
+	};
+
+	/* P2_30 (ZCZ ball C12) pruin */
+	P2_30_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P2_30_default_pin>;
+		pinctrl-1 = <&P2_30_gpio_pin>;
+		pinctrl-2 = <&P2_30_gpio_pu_pin>;
+		pinctrl-3 = <&P2_30_gpio_pd_pin>;
+		pinctrl-4 = <&P2_30_gpio_input_pin>;
+		pinctrl-5 = <&P2_30_spi_cs_pin>;
+		pinctrl-6 = <&P2_30_pwm_pin>;
+		pinctrl-7 = <&P2_30_pruout_pin>;
+		pinctrl-8 = <&P2_30_pruin_pin>;
+	};
+
+	/* P2_31 (ZCZ ball A15) spi_cs */
+	P2_31_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi_cs", "pruin";
+		pinctrl-0 = <&P2_31_default_pin>;
+		pinctrl-1 = <&P2_31_gpio_pin>;
+		pinctrl-2 = <&P2_31_gpio_pu_pin>;
+		pinctrl-3 = <&P2_31_gpio_pd_pin>;
+		pinctrl-4 = <&P2_31_gpio_input_pin>;
+		pinctrl-5 = <&P2_31_spi_cs_pin>;
+		pinctrl-6 = <&P2_31_pruin_pin>;
+	};
+
+	/* P2_32 (ZCZ ball D12) pruin */
+	P2_32_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "spi", "pwm", "pruout", "pruin";
+		pinctrl-0 = <&P2_32_default_pin>;
+		pinctrl-1 = <&P2_32_gpio_pin>;
+		pinctrl-2 = <&P2_32_gpio_pu_pin>;
+		pinctrl-3 = <&P2_32_gpio_pd_pin>;
+		pinctrl-4 = <&P2_32_gpio_input_pin>;
+		pinctrl-5 = <&P2_32_spi_pin>;
+		pinctrl-6 = <&P2_32_pwm_pin>;
+		pinctrl-7 = <&P2_32_pruout_pin>;
+		pinctrl-8 = <&P2_32_pruin_pin>;
+	};
+
+	/* P2_33 (ZCZ ball R12) */
+	P2_33_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout";
+		pinctrl-0 = <&P2_33_default_pin>;
+		pinctrl-1 = <&P2_33_gpio_pin>;
+		pinctrl-2 = <&P2_33_gpio_pu_pin>;
+		pinctrl-3 = <&P2_33_gpio_pd_pin>;
+		pinctrl-4 = <&P2_33_gpio_input_pin>;
+		pinctrl-5 = <&P2_33_qep_pin>;
+		pinctrl-6 = <&P2_33_pruout_pin>;
+	};
+
+	/* P2_34 (ZCZ ball C13) pruin */
+	P2_34_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "qep", "pruout", "pruin";
+		pinctrl-0 = <&P2_34_default_pin>;
+		pinctrl-1 = <&P2_34_gpio_pin>;
+		pinctrl-2 = <&P2_34_gpio_pu_pin>;
+		pinctrl-3 = <&P2_34_gpio_pd_pin>;
+		pinctrl-4 = <&P2_34_gpio_input_pin>;
+		pinctrl-5 = <&P2_34_qep_pin>;
+		pinctrl-6 = <&P2_34_pruout_pin>;
+		pinctrl-7 = <&P2_34_pruin_pin>;
+	};
+
+	/* P2_35 (ZCZ ball U5) gpio_input */
+	P2_35_pinmux {
+		compatible = "bone-pinmux-helper";
+		status = "okay";
+		pinctrl-names = "default", "gpio", "gpio_pu", "gpio_pd", "gpio_input", "pruout", "pruin";
+		pinctrl-0 = <&P2_35_default_pin>;
+		pinctrl-1 = <&P2_35_gpio_pin>;
+		pinctrl-2 = <&P2_35_gpio_pu_pin>;
+		pinctrl-3 = <&P2_35_gpio_pd_pin>;
+		pinctrl-4 = <&P2_35_gpio_input_pin>;
+		pinctrl-5 = <&P2_35_pruout_pin>;
+		pinctrl-6 = <&P2_35_pruin_pin>;
+	};
+
+	/* P2_36 (ZCZ ball C9)  AIN7         */
+
+	cape-universal {
+		compatible = "gpio-of-helper";
+		status = "okay";
+		pinctrl-names = "default";
+		pinctrl-0 = <>;
+
+		P1_02 {
+			gpio-name = "P1_02";
+			gpio = <&gpio2 23 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_04 {
+			gpio-name = "P1_04";
+			gpio = <&gpio2 25 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_06 {
+			gpio-name = "P1_06";
+			gpio = <&gpio0 5 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_08 {
+			gpio-name = "P1_08";
+			gpio = <&gpio0 2 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_10 {
+			gpio-name = "P1_10";
+			gpio = <&gpio0 3 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_12 {
+			gpio-name = "P1_12";
+			gpio = <&gpio0 4 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_20 {
+			gpio-name = "P1_20";
+			gpio = <&gpio0 20 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_26 {
+			gpio-name = "P1_26";
+			gpio = <&gpio0 12 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_28 {
+			gpio-name = "P1_28";
+			gpio = <&gpio0 13 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_29 {
+			gpio-name = "P1_29";
+			gpio = <&gpio3 21 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_30 {
+			gpio-name = "P1_30";
+			gpio = <&gpio1 11 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_31 {
+			gpio-name = "P1_31";
+			gpio = <&gpio3 18 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_32 {
+			gpio-name = "P1_32";
+			gpio = <&gpio1 10 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_33 {
+			gpio-name = "P1_33";
+			gpio = <&gpio3 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_34 {
+			gpio-name = "P1_34";
+			gpio = <&gpio0 26 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_35 {
+			gpio-name = "P1_35";
+			gpio = <&gpio2 24 0>;
+			input;
+			dir-changeable;
+		};
+
+		P1_36 {
+			gpio-name = "P1_36";
+			gpio = <&gpio3 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_01 {
+			gpio-name = "P2_01";
+			gpio = <&gpio1 18 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_02 {
+			gpio-name = "P2_02";
+			gpio = <&gpio1 27 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_03 {
+			gpio-name = "P2_03";
+			gpio = <&gpio0 23 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_04 {
+			gpio-name = "P2_04";
+			gpio = <&gpio1 26 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_05 {
+			gpio-name = "P2_05";
+			gpio = <&gpio0 30 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_06 {
+			gpio-name = "P2_06";
+			gpio = <&gpio1 25 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_07 {
+			gpio-name = "P2_07";
+			gpio = <&gpio0 31 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_08 {
+			gpio-name = "P2_08";
+			gpio = <&gpio1 28 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_09 {
+			gpio-name = "P2_09";
+			gpio = <&gpio0 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_10 {
+			gpio-name = "P2_10";
+			gpio = <&gpio1 20 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_11 {
+			gpio-name = "P2_11";
+			gpio = <&gpio0 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_17 {
+			gpio-name = "P2_17";
+			gpio = <&gpio2 1 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_18 {
+			gpio-name = "P2_18";
+			gpio = <&gpio1 15 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_19 {
+			gpio-name = "P2_19";
+			gpio = <&gpio0 27 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_20 {
+			gpio-name = "P2_20";
+			gpio = <&gpio2 0 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_22 {
+			gpio-name = "P2_22";
+			gpio = <&gpio1 14 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_24 {
+			gpio-name = "P2_24";
+			gpio = <&gpio1 12 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_25 {
+			gpio-name = "P2_25";
+			gpio = <&gpio1 9 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_27 {
+			gpio-name = "P2_27";
+			gpio = <&gpio1 8 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_28 {
+			gpio-name = "P2_28";
+			gpio = <&gpio3 20 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_29 {
+			gpio-name = "P2_29";
+			gpio = <&gpio0 7 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_30 {
+			gpio-name = "P2_30";
+			gpio = <&gpio3 17 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_31 {
+			gpio-name = "P2_31";
+			gpio = <&gpio0 19 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_32 {
+			gpio-name = "P2_32";
+			gpio = <&gpio3 16 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_33 {
+			gpio-name = "P2_33";
+			gpio = <&gpio1 13 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_34 {
+			gpio-name = "P2_34";
+			gpio = <&gpio3 19 0>;
+			input;
+			dir-changeable;
+		};
+
+		P2_35 {
+			gpio-name = "P2_35";
+			gpio = <&gpio2 22 0>;
+			input;
+			dir-changeable;
+		};
+
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-sancloud-bbe.dts b/arch/arm/boot/dts/am335x-sancloud-bbe.dts
--- a/arch/arm/boot/dts/am335x-sancloud-bbe.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-sancloud-bbe.dts	2022-06-12 13:07:42.547111701 -0400
@@ -14,6 +14,11 @@
 / {
 	model = "SanCloud BeagleBone Enhanced";
 	compatible = "sancloud,am335x-boneenhanced", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-sancloud-bbe.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
 
 &am33xx_pinmux {
diff -Naur --no-dereference a/arch/arm/boot/dts/am335x-sancloud-bbe-lite.dts b/arch/arm/boot/dts/am335x-sancloud-bbe-lite.dts
--- a/arch/arm/boot/dts/am335x-sancloud-bbe-lite.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am335x-sancloud-bbe-lite.dts	2022-06-12 13:07:42.547111701 -0400
@@ -16,6 +16,11 @@
 		     "ti,am335x-bone-black",
 		     "ti,am335x-bone",
 		     "ti,am33xx";
+
+	chosen {
+		base_dtb = "am335x-sancloud-bbe-lite.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
 
 &am33xx_pinmux {
@@ -42,6 +47,7 @@
 		#size-cells = <0>;
 
 		compatible = "micron,spi-authenta";
+		symlink = "bone/spi/0.0";
 
 		reg = <0>;
 		spi-max-frequency = <16000000>;
diff -Naur --no-dereference a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
--- a/arch/arm/boot/dts/am33xx.dtsi	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am33xx.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -633,6 +633,13 @@
 			 * Closed source PowerVR driver, no child device
 			 * binding or driver in mainline
 			 */
+			gpu: gpu@0 {
+				compatible = "ti,am3352-sgx530", "img,sgx530";
+				reg = <0x0 0x10000>;
+				interrupts = <37>;
+				clocks = <&gfx_fck_div_ck>;
+				clock-names = "fclk";
+			};
 		};
 	};
 };
diff -Naur --no-dereference a/arch/arm/boot/dts/am33xx-l4.dtsi b/arch/arm/boot/dts/am33xx-l4.dtsi
--- a/arch/arm/boot/dts/am33xx-l4.dtsi	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am33xx-l4.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -300,7 +300,7 @@
 				am33xx_pinmux: pinmux@800 {
 					compatible = "pinctrl-single";
 					reg = <0x800 0x238>;
-					#pinctrl-cells = <2>;
+					#pinctrl-cells = <1>;
 					pinctrl-single,register-width = <32>;
 					pinctrl-single,function-mask = <0x7f>;
 				};
@@ -852,7 +852,7 @@
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0x0 0x300000 0x80000>;
-			status = "disabled";
+			status = "okay";
 
 			pruss: pruss@0 {
 				compatible = "ti,am3356-pruss";
diff -Naur --no-dereference a/arch/arm/boot/dts/am5729-beagleboneai.dts b/arch/arm/boot/dts/am5729-beagleboneai.dts
--- a/arch/arm/boot/dts/am5729-beagleboneai.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am5729-beagleboneai.dts	2022-06-12 13:07:42.547111701 -0400
@@ -26,6 +26,8 @@
 
 	chosen {
 		stdout-path = &uart1;
+		base_dtb = "am5729-beagleboneai.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
 	};
 
 	memory@0 {
@@ -204,6 +206,7 @@
 &i2c1 {
 	status = "okay";
 	clock-frequency = <400000>;
+	symlink = "bone/i2c/0";
 
 	tps659038: tps659038@58 {
 		compatible = "ti,tps659038";
@@ -486,6 +489,7 @@
 
 &uart1 {
 	status = "okay";
+	symlink = "bone/uart/0";
 };
 
 &davinci_mdio_sw {
@@ -675,6 +679,7 @@
 &i2c4 {
 	status = "okay";
 	clock-frequency = <100000>;
+	symlink = "bone/i2c/2";
 };
 
 &cpu0_opp_table {
diff -Naur --no-dereference a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts	2022-06-12 13:07:42.547111701 -0400
@@ -8,6 +8,11 @@
 / {
 	/* NOTE: This describes the "original" pre-production A2 revision */
 	model = "TI AM5728 BeagleBoard-X15";
+
+	chosen {
+		base_dtb = "am57xx-beagle-x15.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
 
 &tpd12s015 {
diff -Naur --no-dereference a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts	2022-06-12 13:07:42.547111701 -0400
@@ -7,6 +7,11 @@
 
 / {
 	model = "TI AM5728 BeagleBoard-X15 rev B1";
+
+	chosen {
+		base_dtb = "am57xx-beagle-x15-revb1.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
 
 &tpd12s015 {
diff -Naur --no-dereference a/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts b/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts	2022-06-12 13:07:42.547111701 -0400
@@ -7,6 +7,11 @@
 
 / {
 	model = "TI AM5728 BeagleBoard-X15 rev C";
+
+	chosen {
+		base_dtb = "am57xx-beagle-x15-revc.dts";
+		base_dtb_timestamp = __TIMESTAMP__;
+	};
 };
 
 &tpd12s015 {
diff -Naur --no-dereference a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
--- a/arch/arm/boot/dts/dra7.dtsi	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/dra7.dtsi	2022-06-12 13:07:42.547111701 -0400
@@ -853,6 +853,22 @@
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges = <0 0x56000000 0x2000000>;
+
+			/*
+			 * Closed source PowerVR driver, no child device
+			 * binding or driver in mainline
+			 */
+			gpu: gpu@0 {
+				compatible = "ti,dra7-sgx544", "img,sgx544";
+				reg = <0x0 0x10000>;
+				interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&l3_iclk_div>,
+					 <&gpu_core_gclk_mux>,
+					 <&gpu_hyd_gclk_mux>;
+				clock-names = "iclk",
+					      "fclk1",
+					      "fclk2";
+			};
 		};
 
 		crossbar_mpu: crossbar@4a002a48 {
@@ -965,6 +981,25 @@
 			};
 		};
 
+		target-module@59000000 {
+			compatible = "ti,sysc-omap4", "ti,sysc";
+			reg = <0x59000020 0x4>;
+			reg-names = "rev";
+			clocks = <&dss_clkctrl DRA7_DSS_BB2D_CLKCTRL 0>;
+			clock-names = "fck";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0x0 0x59000000 0x1000>;
+
+			bb2d: gpu@0 {
+				compatible = "vivante,gc";
+				reg = <0x0 0x700>;
+				interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&dss_clkctrl DRA7_BB2D_CLKCTRL 0>;
+				clock-names = "core";
+			};
+		};
+
 		aes1_target: target-module@4b500000 {
 			compatible = "ti,sysc-omap2", "ti,sysc";
 			reg = <0x4b500080 0x4>,
diff -Naur --no-dereference a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
--- a/arch/arm/boot/dts/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/boot/dts/Makefile	2022-06-12 13:07:42.547111701 -0400
@@ -1,4 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0
+
+ifeq ($(CONFIG_OF_OVERLAY),y)
+DTC_FLAGS += -@
+endif
+
 dtb-$(CONFIG_ARCH_ALPINE) += \
 	alpine-db.dtb
 dtb-$(CONFIG_MACH_ARTPEC6) += \
@@ -843,6 +848,11 @@
 	am335x-base0033.dtb \
 	am335x-bone.dtb \
 	am335x-boneblack.dtb \
+	am335x-bonegreen-wireless-uboot-univ.dtb \
+	am335x-boneblack-uboot-univ.dtb \
+	am335x-bone-uboot-univ.dtb \
+	am335x-boneblack-uboot.dtb \
+	am335x-bonegreen-gateway.dtb \
 	am335x-boneblack-wireless.dtb \
 	am335x-boneblue.dtb \
 	am335x-bonegreen.dtb \
@@ -1499,3 +1509,8 @@
 	aspeed-bmc-portwell-neptune.dtb \
 	aspeed-bmc-quanta-q71l.dtb \
 	aspeed-bmc-supermicro-x11spi.dtb
+
+targets += dtbs dtbs_install
+targets += $(dtb-y)
+
+subdir-y	:= overlays
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/AM335X-PRU-UIO-00A0.dts b/arch/arm/boot/dts/overlays/AM335X-PRU-UIO-00A0.dts
--- a/arch/arm/boot/dts/overlays/AM335X-PRU-UIO-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/AM335X-PRU-UIO-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		AM335X-PRU-UIO-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+
+&pruss_tm {
+	status = "okay";
+};
+
+&pruss {
+	compatible = "ti,pruss-v2";
+	ti,pintc-offset = <0x20000>;
+	interrupt-parent = <&intc>;
+	interrupts = <20 21 22 23 24 25 26 27>;
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-ADC-00A0.dts b/arch/arm/boot/dts/overlays/BB-ADC-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-ADC-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-ADC-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-ADC-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+&tscadc {
+	status = "okay";
+	adc {
+		// Configure one or more (up to 8) steps for the adc to execute:
+
+
+		// For each step, the channel to sample.
+		//	range: 0 .. 7
+		ti,adc-channels = <0 1 2 3 4 5 6 7>;
+		//
+		// BeagleBone Black (and most other variants):
+		//	ch 0	P9.39
+		//	ch 1	P9.40
+		//	ch 2	P9.37
+		//	ch 3	P9.38
+		//	ch 4	P9.33
+		//	ch 5	P9.36
+		//	ch 6	P9.35
+		//	ch 7	measures 0.5 * VDD_3V3B with 2.4 kÎ© source impedance
+		//
+		// PocketBeagle:
+		//	ch 0	P1.19
+		//	ch 1	P1.21
+		//	ch 2	P1.23
+		//	ch 3	P1.25
+		//	ch 4	P1.27
+		//	ch 5	P2.35 via 10k/10k voltage divider
+		//	ch 6	P1.02 via 10k/10k voltage divider
+		//	ch 7	P2.36 via pmic mux
+		//
+		// The divider used on PocketBeagle channels 5 and 6 makes the effective voltage V_eff and
+		// source impedance Z_eff seen by the adc on these channels depend on the voltage V_src and
+		// impedance Z_src of the source connected to the corresponding pin as follows:
+		//
+		//	V_eff = V_src / (2 + Z_src / (10 kÎ©))
+		//	Z_eff = 5 kÎ© * (1 + Z_src / (Z_src + 20 kÎ©))
+		//		â‰ˆ 5 kÎ© + Z_src / 4    for small values of Z_src (up to 2 kÎ© or so)
+
+
+		// For each step, number of adc clock cycles to wait between setting up muxes and sampling.
+		//	range: 0 .. 262143
+		//	optional, default is 152 (XXX but why?!)
+		ti,chan-step-opendelay = <152 152 152 152 152 152 152 152>;
+		//`
+		// XXX is there any purpose to set this nonzero other than to fine-tune the sample rate?
+
+
+		// For each step, how many times it should sample to average.
+		//	range: 1 .. 16, must be power of two (i.e. 1, 2, 4, 8, or 16)
+		//	optional, default is 16
+		ti,chan-step-avg = <16 16 16 16 16 16 16 16>;
+		//
+		// If you're using periodic sampling (using the iio block device rather than sysfs) then
+		// you should consider setting this to 1 and if desired reduce the samplerate in userspace
+		// instead since averaging isn't a particularly good low-pass filter.
+		//
+		// If you're using sysfs to occasionally read a value, then the default value of 16 will
+		// still get you the most accurate readings.
+
+
+		// For each step, number of adc clock cycles to sample minus two.
+		//	range: 0 .. 255   (resulting in sampling time of 2 .. 257 cycles)
+		//	optional, default is 0
+		ti,chan-step-sampledelay = <0 0 0 0 0 0 0 0>;
+		//
+		// If this is set too low, accuracy will deteriorate when the thing you're measuring has a
+		// high source impedance.  The maximum source impedance recommended (by erratum 1.0.32) is:
+		//	(2 + sampledelay) * 2.873 kÎ© - 0.2 kÎ©
+		// which means that the default should be fine for source impedance up to 5.5 kÎ©.
+		//
+		// (This seems to ensure the sampling time is at least 21 times the RC constant, based on
+		// the 5.5 pF nominal capacitance specified in the datasheet.)
+
+
+		// After sampling, conversion time is 13 adc clock cycles.
+		//
+		// The adc clock frequency is 3 MHz, therefore the total time per step in microseconds is:
+		//	( opendelay + avg * ( 2 + sampledelay + 13 ) ) / 3
+		//
+		// If all steps use the same timings then the sample rate will be:
+		//	3 MHz / ( opendelay + avg * ( 2 + sampledelay + 13 ) ) / number_of_steps
+		//
+		// The highest samplerate obtainable (avg=1, opendelay=0, sampledelay=0) is therefore:
+		//	200 kHz / number_of_steps
+		//	= 25 kHz    when using all 8 steps.
+		//
+		// Using avg=16 reduces that to:
+		//	12.5 kHz / number_of_steps
+		//	= 1.5625 kHz    when using all 8 steps.
+		//
+		// Using the default values (avg=16, opendelay=152, sampledelay=0) reduces that to:
+		//	7.653 kHz / number_of_steps
+		//	= 0.9566 kHz    when using all 8 steps.
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-BBBW-WL1835-00A0.dts b/arch/arm/boot/dts/overlays/BB-BBBW-WL1835-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-BBBW-WL1835-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-BBBW-WL1835-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-BBBW-WL1835-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+&{/} {
+	model = "TI AM335x BeagleBone Black Wireless";
+	compatible = "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	wlan_en_reg: fixedregulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "wlan-en-regulator";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		startup-delay-us= <70000>;
+
+		/* WL_EN */
+		gpio = <&gpio3 9 0>;
+		enable-active-high;
+	};
+};
+
+&am33xx_pinmux {
+	bt_pins: pinmux_bt_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD0, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gmii1_txd0.gpio0_28 - BT_EN */
+		>;
+	};
+
+	mmc3_pins: pinmux_mmc3_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD1, PIN_INPUT_PULLUP, MUX_MODE6 ) /* (L15) gmii1_rxd1.mmc2_clk */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TX_EN, PIN_INPUT_PULLUP, MUX_MODE6 ) /* (J16) gmii1_txen.mmc2_cmd */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RX_DV, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (J17) gmii1_rxdv.mmc2_dat0 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD3, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (J18) gmii1_txd3.mmc2_dat1 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD2, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (K15) gmii1_txd2.mmc2_dat2 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_COL, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (H16) gmii1_col.mmc2_dat3 */
+		>;
+	};
+
+	uart3_pins: pinmux_uart3_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD3, PIN_INPUT_PULLUP, MUX_MODE1)	/* gmii1_rxd3.uart3_rxd */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD2, PIN_OUTPUT_PULLDOWN, MUX_MODE1)	/* gmii1_rxd2.uart3_txd */
+			AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT, MUX_MODE3)		/* mdio_data.uart3_ctsn */
+			AM33XX_PADCONF(AM335X_PIN_MDC, PIN_OUTPUT_PULLDOWN, MUX_MODE3)	/* mdio_clk.uart3_rtsn */
+		>;
+	};
+
+	wl18xx_pins: pinmux_wl18xx_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_TX_CLK, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gmii1_txclk.gpio3_9 WL_EN */
+			AM33XX_PADCONF(AM335X_PIN_RMII1_REF_CLK, PIN_INPUT_PULLDOWN, MUX_MODE7)	/* rmii1_refclk.gpio0_29 WL_IRQ */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RX_CLK, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gmii1_rxclk.gpio3_10 LS_BUF_EN */
+		>;
+	};
+};
+
+&mac {
+	status = "disabled";
+};
+
+&mmc3 {
+	dmas = <&edma_xbar 12 0 1
+		&edma_xbar 13 0 2>;
+	dma-names = "tx", "rx";
+	status = "okay";
+	vmmc-supply = <&wlan_en_reg>;
+	bus-width = <4>;
+	non-removable;
+	cap-power-off-card;
+	keep-power-in-suspend;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc3_pins &wl18xx_pins>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	wlcore: wlcore@2 {
+		compatible = "ti,wl1835";
+		reg = <2>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <29 IRQ_TYPE_EDGE_RISING>;
+	};
+};
+
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart3_pins &bt_pins>;
+	status = "okay";
+
+	bluetooth {
+		compatible = "ti,wl1835-st";
+		enable-gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&gpio3 {
+	ls-buf-en-hog {
+		gpio-hog;
+		gpios = <10 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "LS_BUF_EN";
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-BBGG-WL1835-00A0.dts b/arch/arm/boot/dts/overlays/BB-BBGG-WL1835-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-BBGG-WL1835-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-BBGG-WL1835-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-BBGG-WL1835-00A0.kernel = __TIMESTAMP__;
+		wl1835_bt = "S3-texas-300000";
+	};
+};
+
+&{/} {
+	model = "SeeedStudio BeagleBone Green Gateway";
+	compatible = "ti,am335x-bone-green-gateway", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+
+	aliases {
+		rtc0 = &extrtc;
+		rtc1 = "/ocp/rtc@44e3e000";
+	};
+
+	wlan_en_reg: fixedregulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "wlan-en-regulator";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		startup-delay-us= <70000>;
+
+		/* WL_EN */
+		gpio = <&gpio3 9 0>;
+		enable-active-high;
+	};
+
+	leds {
+		pinctrl-names = "default";
+		//pinctrl-0 = <&user_leds_s0>;
+		pinctrl-0 = <&user_leds_s0 &bt_pins>;
+
+		compatible = "gpio-leds";
+
+		led2 {
+			label = "beaglebone:green:usr0";
+			gpios = <&gpio1 21 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+			default-state = "off";
+		};
+
+		led3 {
+			label = "beaglebone:green:usr1";
+			gpios = <&gpio1 22 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc0";
+			default-state = "off";
+		};
+
+		led4 {
+			label = "beaglebone:green:usr2";
+			gpios = <&gpio1 23 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "cpu0";
+			default-state = "off";
+		};
+
+		led5 {
+			label = "beaglebone:green:usr3";
+			gpios = <&gpio1 24 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc1";
+			default-state = "off";
+		};
+
+		led6 {
+			label = "beaglebone:green:usr4";
+			gpios = <&gpio2 21 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "netdev";
+			default-state = "off";
+		};
+
+		wl18xx_bt_en: led7 {
+			label = "wl18xx_bt_en";
+			gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+	};
+};
+
+&am33xx_pinmux {
+	pinctrl-names = "default";
+	pinctrl-0 = <&usbhost_pins>;
+
+	user_leds_s0: user_leds_s0 {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A5, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_a5.gpio1_21 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A6, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gpmc_a6.gpio1_22 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A7, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_a7.gpio1_23 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A8, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gpmc_a8.gpio1_24 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD0, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* WL_Active_LED / USR4 */
+		>;
+	};
+
+	bt_pins: pinmux_bt_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD0, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gmii1_txd0.gpio0_28 - BT_EN */
+		>;
+	};
+
+	mmc3_pins: pinmux_mmc3_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD1, PIN_INPUT_PULLUP, MUX_MODE6 ) /* (L15) gmii1_rxd1.mmc2_clk */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TX_EN, PIN_INPUT_PULLUP, MUX_MODE6 ) /* (J16) gmii1_txen.mmc2_cmd */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RX_DV, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (J17) gmii1_rxdv.mmc2_dat0 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD3, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (J18) gmii1_txd3.mmc2_dat1 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD2, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (K15) gmii1_txd2.mmc2_dat2 */
+			AM33XX_PADCONF(AM335X_PIN_MII1_COL, PIN_INPUT_PULLUP, MUX_MODE5 ) /* (H16) gmii1_col.mmc2_dat3 */
+		>;
+	};
+
+	uart2_grove_pins: pinmux_uart2_grove_pins {
+		pinctrl-single,pins = <
+			AM33XX_IOPAD(0x90c, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6)
+			AM33XX_IOPAD(0x910, PIN_OUTPUT_PULLUP | INPUT_EN | MUX_MODE6)
+		>;
+	};
+
+	uart3_pins: pinmux_uart3_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD3, PIN_INPUT_PULLUP, MUX_MODE1)	/* gmii1_rxd3.uart3_rxd */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD2, PIN_OUTPUT_PULLDOWN, MUX_MODE1)	/* gmii1_rxd2.uart3_txd */
+			AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT, MUX_MODE3)		/* mdio_data.uart3_ctsn */
+			AM33XX_PADCONF(AM335X_PIN_MDC, PIN_OUTPUT_PULLDOWN, MUX_MODE3)	/* mdio_clk.uart3_rtsn */
+		>;
+	};
+
+	usbhost_pins: pinmux_usbhost_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_TXD1, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gmii1_txd1.gpio0[21] */
+		>;
+	};
+
+	wl18xx_pins: pinmux_wl18xx_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_TX_CLK, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gmii1_txclk.gpio3_9 WL_EN */
+			AM33XX_PADCONF(AM335X_PIN_RMII1_REF_CLK, PIN_INPUT_PULLDOWN, MUX_MODE7)	/* rmii1_refclk.gpio0_29 WL_IRQ */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RX_CLK, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gmii1_rxclk.gpio3_10 LS_BUF_EN */
+		>;
+	};
+};
+
+&mac {
+	status = "disabled";
+};
+
+&mmc3 {
+	dmas = <&edma_xbar 12 0 1
+		&edma_xbar 13 0 2>;
+	dma-names = "tx", "rx";
+	status = "okay";
+	vmmc-supply = <&wlan_en_reg>;
+	bus-width = <4>;
+	non-removable;
+	cap-power-off-card;
+	keep-power-in-suspend;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc3_pins &wl18xx_pins>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	wlcore: wlcore@2 {
+		compatible = "ti,wl1835";
+		reg = <2>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <29 IRQ_TYPE_EDGE_RISING>;
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart2_grove_pins>;
+	status = "okay";
+};
+
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart3_pins>;
+	//pinctrl-0 = <&uart3_pins &bt_pins>;
+	status = "okay";
+
+	//bluetooth {
+	//	compatible = "ti,wl1835-st";
+	//	enable-gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
+	//};
+};
+
+&i2c0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	extrtc: rtc@68 {
+		compatible = "dallas,ds1340";
+		reg = <0x68>;
+	};
+};
+
+// (K16) gmii1_txd1.gpio0[21]
+&gpio0 {
+	usb-reset-hog {
+		gpio-hog;
+		gpios = <21 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "usb_reset";
+	};
+};
+
+&gpio3 {
+	ls-buf-en-hog {
+		gpio-hog;
+		gpios = <10 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "LS_BUF_EN";
+	};
+};
+
+&usb1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	hub@1 {
+		compatible = "usb424,9512";
+		reg = <1>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethernet: ethernet@1 {
+			compatible = "usb424,ec00";
+			reg = <1>;
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-BBGW-WL1835-00A0.dts b/arch/arm/boot/dts/overlays/BB-BBGW-WL1835-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-BBGW-WL1835-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-BBGW-WL1835-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,207 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-BBGW-WL1835-00A0.kernel = __TIMESTAMP__;
+		wl1835_bt = "S3-texas-300000";
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P9_12_pinmux { status = "disabled"; };	/* gpmc_ad12.gpio1_28 BT_EN */
+	P8_12_pinmux { status = "disabled"; };	/* gpmc_ad12.mmc2_dat0 */
+	P8_11_pinmux { status = "disabled"; };	/* gpmc_ad13.mmc2_dat1 */
+	P8_16_pinmux { status = "disabled"; };	/* gpmc_ad14.mmc2_dat2 */
+	P8_15_pinmux { status = "disabled"; };	/* gpmc_ad15.mmc2_dat3 */
+
+	P8_18_pinmux { status = "disabled"; };	/* gpmc_clk.mmc2_clk */
+
+	//Audio...
+	P9_28_pinmux { status = "disabled"; };
+	P9_29_pinmux { status = "disabled"; };
+	P9_31_pinmux { status = "disabled"; };
+};
+
+&{/} {
+	model = "TI AM335x BeagleBone Green Wireless";
+	compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone", "ti,am33xx";
+
+	wlan_en_reg: fixedregulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "wlan-en-regulator";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		startup-delay-us= <70000>;
+
+		/* WL_EN */
+		gpio = <&gpio0 26 0>;
+		enable-active-high;
+	};
+
+	leds {
+		pinctrl-names = "default";
+		//pinctrl-0 = <&user_leds_s0>;
+		pinctrl-0 = <&user_leds_s0 &bt_pins>;
+
+		compatible = "gpio-leds";
+
+		led2 {
+			label = "beaglebone:green:usr0";
+			gpios = <&gpio1 21 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+			default-state = "off";
+		};
+
+		led3 {
+			label = "beaglebone:green:usr1";
+			gpios = <&gpio1 22 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc0";
+			default-state = "off";
+		};
+
+		led4 {
+			label = "beaglebone:green:usr2";
+			gpios = <&gpio1 23 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "cpu0";
+			default-state = "off";
+		};
+
+		led5 {
+			label = "beaglebone:green:usr3";
+			gpios = <&gpio1 24 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "mmc1";
+			default-state = "off";
+		};
+
+		wl18xx_bt_en: led7 {
+			label = "wl18xx_bt_en";
+			gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+	};
+};
+
+&am33xx_pinmux {
+	user_leds_s0: user_leds_s0 {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A5, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_a5.gpio1_21 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A6, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gpmc_a6.gpio1_22 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A7, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_a7.gpio1_23 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A8, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gpmc_a8.gpio1_24 */
+		>;
+	};
+
+	bt_pins: pinmux_bt_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_BEN1, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_ad12.gpio1_28 BT_EN */
+		>;
+	};
+
+	mmc3_pins: pinmux_mmc3_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD12, PIN_INPUT_PULLUP, MUX_MODE3)	/* gpmc_ad12.mmc2_dat0 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD13, PIN_INPUT_PULLUP, MUX_MODE3)	/* gpmc_ad13.mmc2_dat1 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_INPUT_PULLUP, MUX_MODE3)	/* gpmc_ad14.mmc2_dat2 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD15, PIN_INPUT_PULLUP, MUX_MODE3)	/* gpmc_ad15.mmc2_dat3 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_CSN3, PIN_INPUT_PULLUP, MUX_MODE3)	/* gpmc_csn3.mmc2_cmd */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_CLK, PIN_INPUT_PULLUP, MUX_MODE3)	/* gpmc_clk.mmc2_clk */
+		>;
+	};
+
+	uart3_pins: pinmux_uart3_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD3, PIN_INPUT_PULLUP, MUX_MODE1)	/* gmii1_rxd3.uart3_rxd */
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD2, PIN_OUTPUT_PULLDOWN, MUX_MODE1)	/* gmii1_rxd2.uart3_txd */
+			AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT, MUX_MODE3)		/* mdio_data.uart3_ctsn */
+			AM33XX_PADCONF(AM335X_PIN_MDC, PIN_OUTPUT_PULLDOWN, MUX_MODE3)	/* mdio_clk.uart3_rtsn */
+		>;
+	};
+
+	wl18xx_pins: pinmux_wl18xx_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD10, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gpmc_ad10.gpio0_26 WL_EN */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD11, PIN_INPUT_PULLDOWN, MUX_MODE7)	/* gpmc_ad11.gpio0_27 WL_IRQ */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_CSN0, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gpmc_csn0.gpio1_29 LS_BUF_EN */
+		>;
+	};
+};
+
+&mac {
+	status = "disabled";
+};
+
+&mmc3 {
+	dmas = <&edma_xbar 12 0 1
+		&edma_xbar 13 0 2>;
+	dma-names = "tx", "rx";
+	status = "okay";
+	vmmc-supply = <&wlan_en_reg>;
+	bus-width = <4>;
+	non-removable;
+	cap-power-off-card;
+	keep-power-in-suspend;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc3_pins &wl18xx_pins>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+	wlcore: wlcore@2 {
+		compatible = "ti,wl1835";
+		reg = <2>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <27 IRQ_TYPE_EDGE_RISING>;
+	};
+};
+
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart3_pins &bt_pins>;
+	status = "okay";
+
+	bluetooth {
+		compatible = "ti,wl1835-st";
+		enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&gpio1 {
+	ls-buf-en-hog {
+		gpio-hog;
+		gpios = <29 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "LS_BUF_EN";
+	};
+};
+
+/* BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated.*/
+/* in case it isn't, wilink8 ends up in one of the test modes that     */
+/* intruces various issues (elp wkaeup timeouts etc.)                  */
+/* On the BBGW this pin is routed through the level shifter (U21) that */
+/* introduces a pullup on the line and wilink8 ends up in a bad state. */
+/* use a gpio hog to force this pin low. An alternative may be adding  */
+/* an external pulldown on U21 pin 4.                                  */
+
+&gpio3 {
+	bt-aud-in-hog {
+		gpio-hog;
+		gpios = <16 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "MCASP0_AHCLKR";
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-BONE-4D5R-01-00A1.dts b/arch/arm/boot/dts/overlays/BB-BONE-4D5R-01-00A1.dts
--- a/arch/arm/boot/dts/overlays/BB-BONE-4D5R-01-00A1.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-BONE-4D5R-01-00A1.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,224 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-BONE-4D5R-01-00A1.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P8_45_pinmux { status = "disabled"; };	/* lcd: lcd_data0 */
+	P8_46_pinmux { status = "disabled"; };	/* lcd: lcd_data1 */
+	P8_43_pinmux { status = "disabled"; };	/* lcd: lcd_data2 */
+	P8_44_pinmux { status = "disabled"; };	/* lcd: lcd_data3 */
+	P8_41_pinmux { status = "disabled"; };	/* lcd: lcd_data4 */
+	P8_42_pinmux { status = "disabled"; };	/* lcd: lcd_data5 */
+	P8_39_pinmux { status = "disabled"; };	/* lcd: lcd_data6 */
+	P8_40_pinmux { status = "disabled"; };	/* lcd: lcd_data7 */
+	P8_37_pinmux { status = "disabled"; };	/* lcd: lcd_data8 */
+	P8_38_pinmux { status = "disabled"; };	/* lcd: lcd_data9 */
+	P8_36_pinmux { status = "disabled"; };	/* lcd: lcd_data10 */
+	P8_34_pinmux { status = "disabled"; };	/* lcd: lcd_data11 */
+	P8_35_pinmux { status = "disabled"; };	/* lcd: lcd_data12 */
+	P8_33_pinmux { status = "disabled"; };	/* lcd: lcd_data13 */
+	P8_31_pinmux { status = "disabled"; };	/* lcd: lcd_data14 */
+	P8_32_pinmux { status = "disabled"; };	/* lcd: lcd_data15 */
+
+	P8_27_pinmux { status = "disabled"; };	/* lcd: lcd_vsync */
+	P8_29_pinmux { status = "disabled"; };	/* lcd: lcd_hsync */
+	P8_28_pinmux { status = "disabled"; };	/* lcd: lcd_pclk */
+	P8_30_pinmux { status = "disabled"; };	/* lcd: lcd_ac_bias_en */
+
+	P9_27_pinmux { status = "disabled"; };	/* lcd: gpio3_19 DISPEN */
+
+	P9_14_pinmux { status = "disabled"; };	/* pwm: ehrpwm1a PWM_BL */
+
+	P9_18_pinmux { status = "disabled"; };	/* i2c1_sda */
+	P9_17_pinmux { status = "disabled"; };	/* i2c1_scl */
+	P9_26_pinmux { status = "disabled"; };	/* touch interrupt on gpio0_14 */
+};
+
+&am33xx_pinmux {
+	bb_lcd_pwm_backlight_pins: pinmux_bb_lcd_pwm_backlight_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A2, PIN_OUTPUT, MUX_MODE6) /* gpmc_a2.ehrpwm1a, OMAP_MUX_MODE6 | AM33XX_PIN_OUTPUT */
+		>;
+	};
+
+	bb_lcd_lcd_pins: pinmux_bb_lcd_lcd_pins {
+		pinctrl-single,pins = <
+			/*LCD enable */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSR, PIN_OUTPUT, MUX_MODE7) /* mcasp0_fsr.gpio3_19, OUTPUT | MODE7  LCD DISEN */
+
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0)
+
+			AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT, MUX_MODE0)
+		>;
+	};
+
+	bb_i2c1_pins: pinmux_bb_i2c1_pins {
+		pinctrl-single,pins = <
+			AM33XX_IOPAD(0x958, PIN_INPUT_PULLUP | SLEWCTRL_SLOW | MUX_MODE2) /* spi0_d1.i2c1_sda */
+			AM33XX_IOPAD(0x95C, PIN_INPUT_PULLUP | SLEWCTRL_SLOW | MUX_MODE2) /* spi0_cs0.i2c1_scl */
+		>;
+	};
+
+	ar1021_pins: pinmux_ar1021_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_UART1_RXD, PIN_INPUT, MUX_MODE7)
+		>;
+	};
+};
+
+&epwmss1 {
+	status = "okay";
+};
+
+&ehrpwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&bb_lcd_pwm_backlight_pins>;
+	status = "okay";
+};
+
+&lcdc {
+	status = "okay";
+
+	blue-and-red-wiring = "straight";
+
+	//FIXME - LCD doesn't init...
+	//port {
+	//	lcdc_0: endpoint@0 {
+	//		remote-endpoint = <&panel_0>;
+	//	};
+	//};
+};
+
+&i2c1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&bb_i2c1_pins>;
+
+	clock-frequency = <100000>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	ar1021: ar1021@4d {
+		status = "okay";
+		compatible = "microchip,ar1021-i2c";
+		reg = <0x4d>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&ar1021_pins>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <14 IRQ_TYPE_LEVEL_HIGH>;
+
+		touchscreen-offset-x=<250>;
+		touchscreen-offset-y=<300>;
+
+		touchscreen-inverted-y;
+	};
+};
+
+&{/} {
+	backlight: backlight {
+		status = "okay";
+		compatible = "pwm-backlight";
+		pwms = <&ehrpwm1 0 500000 0>;
+		brightness-levels = <
+			0  1  2  3  4  5  6  7  8  9
+			10 11 12 13 14 15 16 17 18 19
+			20 21 22 23 24 25 26 27 28 29
+			30 31 32 33 34 35 36 37 38 39
+			40 41 42 43 44 45 46 47 48 49
+			50 51 52 53 54 55 56 57 58 59
+			60 61 62 63 64 65 66 67 68 69
+			70 71 72 73 74 75 76 77 78 79
+			80 81 82 83 84 85 86 87 88 89
+			90 91 92 93 94 95 96 97 98 99
+			100
+		>;
+		default-brightness-level = <100>;
+	};
+
+	panel {
+		status = "okay";
+		compatible = "ti,tilcdc,panel";
+		pinctrl-names = "default";
+		pinctrl-0 = <&bb_lcd_lcd_pins>;
+		backlight = <&backlight>;
+		enable-gpios = <&gpio3 19 0>;
+
+		//FIXME - LCD doesn't init...
+		//port {
+		//	panel_0: endpoint@0 {
+		//		remote-endpoint = <&lcdc_0>;
+		//	};
+		//};
+
+		panel-info {
+			ac-bias           = <255>;
+			ac-bias-intrpt    = <0>;
+			dma-burst-sz      = <16>;
+			bpp               = <16>;
+			fdd               = <0x80>;
+			sync-edge         = <0>;
+			sync-ctrl         = <1>;
+			raster-order      = <0>;
+			fifo-th           = <0>;
+		};
+
+		display-timings {
+			native-mode = <&timing0>;
+			/* Settings for ThreeFive S9700RTWV35TR / LCD7 cape: */
+			timing0: 800x480 {
+				clock-frequency = <30000000>;
+				hactive = <800>;
+				vactive = <480>;
+				hfront-porch = <40>;
+				hback-porch = <40>;
+				hsync-len = <48>;
+				vback-porch = <30>;
+				vfront-porch = <13>;
+				vsync-len = <3>;
+				hsync-active = <0>;
+				vsync-active = <0>;
+				de-active = <1>;
+				pixelclk-active = <0>;
+			};
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-BONE-eMMC1-01-00A0.dts b/arch/arm/boot/dts/overlays/BB-BONE-eMMC1-01-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-BONE-eMMC1-01-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-BONE-eMMC1-01-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-BONE-eMMC1-01-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P8_21_pinmux { status = "disabled"; };	/* mmc1_clk */
+	P8_20_pinmux { status = "disabled"; };	/* mmc1_cmd */
+	P8_25_pinmux { status = "disabled"; };	/* mmc1_dat0 */
+	P8_24_pinmux { status = "disabled"; };	/* mmc1_dat1 */
+	P8_05_pinmux { status = "disabled"; };	/* mmc1_dat2 */
+	P8_06_pinmux { status = "disabled"; };	/* mmc1_dat3 */
+	P8_23_pinmux { status = "disabled"; };	/* mmc1_dat4 */
+	P8_22_pinmux { status = "disabled"; };	/* mmc1_dat5 */
+	P8_03_pinmux { status = "disabled"; };	/* mmc1_dat6 */
+	P8_04_pinmux { status = "disabled"; };	/* mmc1_dat7 */
+};
+
+&am33xx_pinmux {
+	emmc_pins: pinmux_emmc_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_CSN1, PIN_INPUT_PULLUP, MUX_MODE2) /* gpmc_csn1.mmc1_clk */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_CSN2, PIN_INPUT_PULLUP, MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD0, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD1, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD2, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD3, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD4, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD5, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD6, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD7, PIN_INPUT_PULLUP, MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */
+		>;
+	};
+};
+
+&mmc2 {
+	vmmc-supply = <&vmmcsd_fixed>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_pins>;
+	bus-width = <8>;
+	status = "okay";
+	non-removable;
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-BONE-LCD4-01-00A1.dts b/arch/arm/boot/dts/overlays/BB-BONE-LCD4-01-00A1.dts
--- a/arch/arm/boot/dts/overlays/BB-BONE-LCD4-01-00A1.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-BONE-LCD4-01-00A1.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,276 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-BONE-LCD4-01-00A1.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P9_12_pinmux { status = "disabled"; };	/* P9_12: gpmc_ben1.gpio1_28, INPUT | PULLDIS | MODE7 */
+
+	P9_14_pinmux { status = "disabled"; };	/* P9_14: gpmc_a2.ehrpwm1a */
+
+	P9_27_pinmux { status = "disabled"; };	/* P9_27: mcasp0_fsr.gpio3_19 */
+
+	P8_45_pinmux { status = "disabled"; };	/* P8_45: lcd_data0.lcd_data0 */
+	P8_46_pinmux { status = "disabled"; };	/* P8_46: lcd_data1.lcd_data1 */
+	P8_43_pinmux { status = "disabled"; };	/* P8_43: lcd_data2.lcd_data2 */
+	P8_44_pinmux { status = "disabled"; };	/* P8_44: lcd_data3.lcd_data3 */
+	P8_41_pinmux { status = "disabled"; };	/* P8_41: lcd_data4.lcd_data4 */
+	P8_42_pinmux { status = "disabled"; };	/* P8_42: lcd_data5.lcd_data5 */
+	P8_39_pinmux { status = "disabled"; };	/* P8_39: lcd_data6.lcd_data6 */
+	P8_40_pinmux { status = "disabled"; };	/* P8_40: lcd_data7.lcd_data7 */
+	P8_37_pinmux { status = "disabled"; };	/* P8_37: lcd_data8.lcd_data8 */
+	P8_38_pinmux { status = "disabled"; };	/* P8_38: lcd_data9.lcd_data9 */
+	P8_36_pinmux { status = "disabled"; };	/* P8_36: lcd_data10.lcd_data10 */
+	P8_34_pinmux { status = "disabled"; };	/* P8_34: lcd_data11.lcd_data11 */
+	P8_35_pinmux { status = "disabled"; };	/* P8_35: lcd_data12.lcd_data12 */
+	P8_33_pinmux { status = "disabled"; };	/* P8_33: lcd_data13.lcd_data13 */
+	P8_31_pinmux { status = "disabled"; };	/* P8_31: lcd_data14.lcd_data14 */
+	P8_32_pinmux { status = "disabled"; };	/* P8_32: lcd_data15.lcd_data15 */
+
+	P8_27_pinmux { status = "disabled"; };	/* P8_27: lcd_vsync.lcd_vsync */
+	P8_29_pinmux { status = "disabled"; };	/* P8_29: lcd_hsync.lcd_hsync */
+	P8_28_pinmux { status = "disabled"; };	/* P8_28: lcd_pclk.lcd_pclk */
+	P8_30_pinmux { status = "disabled"; };	/* P8_30: lcd_ac_bias_en.lcd_ac_bias_en */
+
+	P9_15_pinmux { status = "disabled"; };	/* P9_15: gpmc_a0.gpio1_16 */
+	P9_23_pinmux { status = "disabled"; };	/* P9_23: gpmc_a1.gpio1_17 */
+	P9_16_pinmux { status = "disabled"; };	/* P9_16: gpmc_a3.gpio1_19 */
+	P9_30_pinmux { status = "disabled"; };	/* P9_30: mcasp0_axr0.gpio3_16 */
+	P9_24_pinmux { status = "disabled"; };	/* P9_24: uart1_txd.gpio0_15 */
+};
+
+&am33xx_pinmux {
+	bb_lcd_led_pins: pinmux_bb_lcd_led_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_BEN1, PIN_INPUT, MUX_MODE7)	/* P9_12: gpmc_ben1.gpio1_28, INPUT | PULLDIS | MODE7 */
+		>;
+	};
+
+	bb_lcd_pwm_backlight_pins: pinmux_bb_lcd_pwm_backlight_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A2, PIN_OUTPUT_PULLDOWN, MUX_MODE6)	/* P9_14: gpmc_a2.ehrpwm1a */
+		>;
+	};
+
+	bb_lcd_lcd_pins: pinmux_bb_lcd_lcd_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSR, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* P9_27: mcasp0_fsr.gpio3_19 */
+
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0)
+
+			AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT, MUX_MODE0)
+		>;
+	};
+
+	bb_lcd_keymap_pins: pinmux_bb_lcd_keymap_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A0, PIN_INPUT, MUX_MODE7)	/* P9_15: gpmc_a0.gpio1_16 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A1, PIN_INPUT, MUX_MODE7)	/* P9_23: gpmc_a1.gpio1_17 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A3, PIN_INPUT, MUX_MODE7)	/* P9_16: gpmc_a3.gpio1_19 */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AXR0, PIN_INPUT, MUX_MODE7)	/* P9_30: mcasp0_axr0.gpio3_16 */
+			AM33XX_PADCONF(AM335X_PIN_UART1_TXD, PIN_INPUT, MUX_MODE7)	/* P9_24: uart1_txd.gpio0_15 */
+		>;
+	};
+};
+
+&epwmss1 {
+	status = "okay";
+};
+
+&ehrpwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&bb_lcd_pwm_backlight_pins>;
+	status = "okay";
+};
+
+&lcdc {
+	status = "okay";
+
+	blue-and-red-wiring = "straight";
+
+	//FIXME - LCD doesn't init...
+	//port {
+	//	lcdc_0: endpoint@0 {
+	//		remote-endpoint = <&panel_0>;
+	//	};
+	//};
+};
+
+&tscadc {
+	status = "okay";
+	tsc {
+		ti,wires = <4>;
+		ti,x-plate-resistance = <200>;
+		ti,coordinate-readouts = <5>;
+		ti,wire-config = <0x00 0x11 0x22 0x33>;
+		ti,charge-delay = <0x400>;
+	};
+
+	adc {
+		ti,adc-channels = <4 5 6 7>;
+	};
+};
+
+&{/} {
+	backlight: backlight {
+		status = "okay";
+		compatible = "pwm-backlight";
+		pwms = <&ehrpwm1 0 500000 0>;
+		brightness-levels = <
+			0  1  2  3  4  5  6  7  8  9
+			10 11 12 13 14 15 16 17 18 19
+			20 21 22 23 24 25 26 27 28 29
+			30 31 32 33 34 35 36 37 38 39
+			40 41 42 43 44 45 46 47 48 49
+			50 51 52 53 54 55 56 57 58 59
+			60 61 62 63 64 65 66 67 68 69
+			70 71 72 73 74 75 76 77 78 79
+			80 81 82 83 84 85 86 87 88 89
+			90 91 92 93 94 95 96 97 98 99
+			100
+		>;
+		default-brightness-level = <100>;
+	};
+
+	panel {
+		status = "okay";
+		compatible = "ti,tilcdc,panel";
+		pinctrl-names = "default";
+		pinctrl-0 = <&bb_lcd_lcd_pins>;
+		backlight = <&backlight>;
+
+		//FIXME - LCD doesn't init...
+		//port {
+		//	panel_0: endpoint@0 {
+		//		remote-endpoint = <&lcdc_0>;
+		//	};
+		//};
+
+		panel-info {
+			ac-bias           = <255>;
+			ac-bias-intrpt    = <0>;
+			dma-burst-sz      = <16>;
+			bpp               = <16>;
+			fdd               = <0x80>;
+			sync-edge         = <0>;
+			sync-ctrl         = <1>;
+			raster-order      = <0>;
+			fifo-th           = <0>;
+		};
+		display-timings {
+			native-mode = <&timing0>;
+			/* www.newhavendisplay.com/app_notes/OTA5180A.pdf */
+			timing0: 480x272 {
+				clock-frequency = <9200000>;
+				hactive = <480>;
+				vactive = <272>;
+				hfront-porch = <8>;
+				hback-porch = <47>;
+				hsync-len = <41>;
+				vback-porch = <2>;
+				vfront-porch = <3>;
+				vsync-len = <10>;
+				hsync-active = <0>;
+				vsync-active = <0>;
+				de-active = <1>;
+				pixelclk-active = <0>;
+			};
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&bb_lcd_led_pins>;
+
+		led-ld0 {
+			label = "lcd:green:usr0";
+			gpios = <&gpio1 28 0>;
+			linux,default-trigger = "heartbeat";
+			default-state = "off";
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&bb_lcd_keymap_pins>;
+
+		button-1 {
+			debounce_interval = <50>;
+			linux,code = <105>;
+			label = "left";
+			gpios = <&gpio1 16 0x1>;
+			gpio-key,wakeup;
+			autorepeat;
+		};
+		button-2 {
+			debounce_interval = <50>;
+			linux,code = <106>;
+			label = "right";
+			gpios = <&gpio1 17 0x1>;
+			gpio-key,wakeup;
+			autorepeat;
+		};
+		button-3 {
+			debounce_interval = <50>;
+			linux,code = <103>;
+			label = "up";
+			gpios = <&gpio1 19 0x1>;
+			gpio-key,wakeup;
+			autorepeat;
+		};
+		button-4 {
+			debounce_interval = <50>;
+			linux,code = <108>;
+			label = "down";
+			gpios = <&gpio3 16 0x1>;
+			gpio-key,wakeup;
+			autorepeat;
+		};
+		button-5 {
+			debounce_interval = <50>;
+			linux,code = <28>;
+			label = "enter";
+			gpios = <&gpio0 15 0x1>;
+			gpio-key,wakeup;
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-BONE-NH7C-01-A0.dts b/arch/arm/boot/dts/overlays/BB-BONE-NH7C-01-A0.dts
--- a/arch/arm/boot/dts/overlays/BB-BONE-NH7C-01-A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-BONE-NH7C-01-A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,232 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-BONE-NH7C-01-A0.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P8_45_pinmux { status = "disabled"; };	/* lcd: lcd_data0 */
+	P8_46_pinmux { status = "disabled"; };	/* lcd: lcd_data1 */
+	P8_43_pinmux { status = "disabled"; };	/* lcd: lcd_data2 */
+	P8_44_pinmux { status = "disabled"; };	/* lcd: lcd_data3 */
+	P8_41_pinmux { status = "disabled"; };	/* lcd: lcd_data4 */
+	P8_42_pinmux { status = "disabled"; };	/* lcd: lcd_data5 */
+	P8_39_pinmux { status = "disabled"; };	/* lcd: lcd_data6 */
+	P8_40_pinmux { status = "disabled"; };	/* lcd: lcd_data7 */
+	P8_37_pinmux { status = "disabled"; };	/* lcd: lcd_data8 */
+	P8_38_pinmux { status = "disabled"; };	/* lcd: lcd_data9 */
+	P8_36_pinmux { status = "disabled"; };	/* lcd: lcd_data10 */
+	P8_34_pinmux { status = "disabled"; };	/* lcd: lcd_data11 */
+	P8_35_pinmux { status = "disabled"; };	/* lcd: lcd_data12 */
+	P8_33_pinmux { status = "disabled"; };	/* lcd: lcd_data13 */
+	P8_31_pinmux { status = "disabled"; };	/* lcd: lcd_data14 */
+	P8_32_pinmux { status = "disabled"; };	/* lcd: lcd_data15 */
+
+	P8_15_pinmux { status = "disabled"; };	/* gpmc_ad15.lcd_data16 */
+	P8_16_pinmux { status = "disabled"; };	/* gpmc_ad14.lcd_data17 */
+	P8_11_pinmux { status = "disabled"; };	/* gpmc_ad13.lcd_data18 */
+	P8_12_pinmux { status = "disabled"; };	/* gpmc_ad12.lcd_data19 */
+	P8_17_pinmux { status = "disabled"; };	/* gpmc_ad11.lcd_data20 */
+	P8_14_pinmux { status = "disabled"; };	/* gpmc_ad10.lcd_data21 */
+	P8_13_pinmux { status = "disabled"; };	/* gpmc_ad9.lcd_data22 */
+	P8_19_pinmux { status = "disabled"; };	/* gpmc_ad8.lcd_data23 */
+
+	P8_27_pinmux { status = "disabled"; };	/* lcd: lcd_vsync */
+	P8_29_pinmux { status = "disabled"; };	/* lcd: lcd_hsync */
+	P8_28_pinmux { status = "disabled"; };	/* lcd: lcd_pclk */
+	P8_30_pinmux { status = "disabled"; };	/* lcd: lcd_ac_bias_en */
+
+	P8_18_pinmux { status = "disabled"; };	/* lcd: enable */
+
+	P9_14_pinmux { status = "disabled"; };	/* pwm: ehrpwm1a */
+
+	P9_27_pinmux { status = "disabled"; };	/* ft5336: gpio3_15 */
+};
+
+&am33xx_pinmux {
+	bb_lcd_pwm_backlight_pins: pinmux_bb_lcd_pwm_backlight_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A2, PIN_OUTPUT_PULLDOWN, MUX_MODE6)	/* P9_14: gpmc_a2.ehrpwm1a */
+		>;
+	};
+
+	bb_lcd_lcd_pins: pinmux_bb_lcd_lcd_pins {
+		pinctrl-single,pins = <
+			/*LCD enable */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_CLK, PIN_OUTPUT_PULLUP, MUX_MODE7)	/* gpmc_clk_mux0.gpio2_1 */
+
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0)
+
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD15, PIN_OUTPUT, MUX_MODE1)	/* P8_15: gpmc_ad15.lcd_data16 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_OUTPUT, MUX_MODE1)	/* P8_16: gpmc_ad14.lcd_data17 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD13, PIN_OUTPUT, MUX_MODE1)	/* P8_11: gpmc_ad13.lcd_data18 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD12, PIN_OUTPUT, MUX_MODE1)	/* P8_12: gpmc_ad12.lcd_data19 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD11, PIN_OUTPUT, MUX_MODE1)	/* P8_17: gpmc_ad11.lcd_data20 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD10, PIN_OUTPUT, MUX_MODE1)	/* P8_14: gpmc_ad10.lcd_data21 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD9, PIN_OUTPUT, MUX_MODE1)	/* P8_13: gpmc_ad9.lcd_data22 */
+			AM33XX_PADCONF(AM335X_PIN_GPMC_AD8, PIN_OUTPUT, MUX_MODE1)	/* P8_19: gpmc_ad8.lcd_data23 */
+
+			AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT, MUX_MODE0)
+		>;
+	};
+
+	edt_ft5x06_pins: pinmux_edt_ft5x06_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSR, PIN_INPUT_PULLDOWN, MUX_MODE7)	/* mcasp0_fsr.gpio3_19 */
+		>;
+	};
+};
+
+&epwmss1 {
+	status = "okay";
+};
+
+&ehrpwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&bb_lcd_pwm_backlight_pins>;
+	status = "okay";
+};
+
+&lcdc {
+	status = "okay";
+
+	blue-and-red-wiring = "crossed";
+
+	//FIXME - LCD doesn't init...
+	//port {
+	//	lcdc_0: endpoint@0 {
+	//		remote-endpoint = <&panel_0>;
+	//	};
+	//};
+};
+
+&i2c2 {
+	status = "okay";
+
+	clock-frequency = <100000>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	edt-ft5x06@38 {
+		status = "okay";
+		compatible = "edt,edt-ft5406";
+		reg = <0x38>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&edt_ft5x06_pins>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <19 0>;
+		//reset-gpios = <&gpio3 14 GPIO_ACTIVE_LOW>;
+
+		touchscreen-size-x = <800>;
+		touchscreen-size-y = <480>;
+		//touchscreen-swapped-x-y;
+	};
+};
+
+&{/} {
+	backlight: backlight {
+		status = "okay";
+		compatible = "pwm-backlight";
+		pwms = <&ehrpwm1 0 500000 0>;
+		brightness-levels = <
+			0  1  2  3  4  5  6  7  8  9
+			10 11 12 13 14 15 16 17 18 19
+			20 21 22 23 24 25 26 27 28 29
+			30 31 32 33 34 35 36 37 38 39
+			40 41 42 43 44 45 46 47 48 49
+			50 51 52 53 54 55 56 57 58 59
+			60 61 62 63 64 65 66 67 68 69
+			70 71 72 73 74 75 76 77 78 79
+			80 81 82 83 84 85 86 87 88 89
+			90 91 92 93 94 95 96 97 98 99
+			100
+		>;
+		default-brightness-level = <100>;
+	};
+
+	/* NHD-7.0-800480EF-ATXL# */
+	panel {
+		status = "okay";
+		compatible = "ti,tilcdc,panel";
+		pinctrl-names = "default";
+		pinctrl-0 = <&bb_lcd_lcd_pins>;
+		backlight = <&backlight>;
+		enable-gpios = <&gpio2 1 0>;
+
+		//FIXME - LCD doesn't init...
+		//port {
+		//	panel_0: endpoint@0 {
+		//		remote-endpoint = <&lcdc_0>;
+		//	};
+		//};
+
+		panel-info {
+			ac-bias           = <255>;
+			ac-bias-intrpt    = <0>;
+			dma-burst-sz      = <16>;
+			bpp               = <32>;
+			fdd               = <0x80>;
+			tft-alt-mode      = <0>;
+			stn-565-mode      = <0>;
+			mono-8bit-mode    = <0>;
+			sync-edge         = <0>;
+			sync-ctrl         = <0>;
+			raster-order      = <0>;
+			fifo-th           = <0>;
+		};
+
+		display-timings {
+			native-mode = <&timing0>;
+			timing0: 800x480 {
+				clock-frequency = <45000000>;
+				hactive = <800>;
+				vactive = <480>;
+				hfront-porch = <40>;
+				hback-porch = <40>;
+				hsync-len = <48>;
+				vback-porch = <29>;
+				vfront-porch = <13>;
+				vsync-len = <3>;
+				hsync-active = <0>;
+				vsync-active = <0>;
+			};
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-CAPE-DISP-CT4-00A0.dts b/arch/arm/boot/dts/overlays/BB-CAPE-DISP-CT4-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-CAPE-DISP-CT4-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-CAPE-DISP-CT4-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-CAPE-DISP-CT4-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P8_45_pinmux { status = "disabled"; };	/* lcd: lcd_data0 */
+	P8_46_pinmux { status = "disabled"; };	/* lcd: lcd_data1 */
+	P8_43_pinmux { status = "disabled"; };	/* lcd: lcd_data2 */
+	P8_44_pinmux { status = "disabled"; };	/* lcd: lcd_data3 */
+	P8_41_pinmux { status = "disabled"; };	/* lcd: lcd_data4 */
+	P8_42_pinmux { status = "disabled"; };	/* lcd: lcd_data5 */
+	P8_39_pinmux { status = "disabled"; };	/* lcd: lcd_data6 */
+	P8_40_pinmux { status = "disabled"; };	/* lcd: lcd_data7 */
+	P8_37_pinmux { status = "disabled"; };	/* lcd: lcd_data8 */
+	P8_38_pinmux { status = "disabled"; };	/* lcd: lcd_data9 */
+	P8_36_pinmux { status = "disabled"; };	/* lcd: lcd_data10 */
+	P8_34_pinmux { status = "disabled"; };	/* lcd: lcd_data11 */
+	P8_35_pinmux { status = "disabled"; };	/* lcd: lcd_data12 */
+	P8_33_pinmux { status = "disabled"; };	/* lcd: lcd_data13 */
+	P8_31_pinmux { status = "disabled"; };	/* lcd: lcd_data14 */
+	P8_32_pinmux { status = "disabled"; };	/* lcd: lcd_data15 */
+
+	P8_27_pinmux { status = "disabled"; };	/* lcd: lcd_vsync */
+	P8_29_pinmux { status = "disabled"; };	/* lcd: lcd_hsync */
+	P8_28_pinmux { status = "disabled"; };	/* lcd: lcd_pclk */
+	P8_30_pinmux { status = "disabled"; };	/* lcd: lcd_ac_bias_en */
+
+	P9_28_pinmux { status = "disabled"; };	/* pwm: eCAP2_in_PWM2_out */
+
+	P9_29_pinmux { status = "disabled"; };	/* ft5336: gpio3_15 */
+	P9_31_pinmux { status = "disabled"; };	/* ft5336: gpio3_14 */
+};
+
+&am33xx_pinmux {
+	bb_lcd_pwm_backlight_pins: pinmux_bb_lcd_pwm_backlight_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKR, PIN_OUTPUT_PULLDOWN,  MUX_MODE4) /* mcasp0_ahclkr.eCAP2_in_PWM2_out */
+		>;
+	};
+
+	bb_lcd_lcd_pins: pinmux_bb_lcd_lcd_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0)
+
+			AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT, MUX_MODE0)
+		>;
+	};
+
+	edt_ft5336_ts_pins: pinmux_edt_ft5336_ts_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSX, PIN_INPUT_PULLDOWN, MUX_MODE7)	/* mcasp0_fsx.gpio3_15 */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_INPUT_PULLDOWN, MUX_MODE7)	/* mcasp0_aclkx.gpio3_14 */
+		>;
+	};
+};
+
+&epwmss2 {
+	status = "okay";
+};
+
+&ecap2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&bb_lcd_pwm_backlight_pins>;
+	status = "okay";
+};
+
+&lcdc {
+	status = "okay";
+
+	blue-and-red-wiring = "straight";
+
+	//FIXME - LCD doesn't init...
+	//port {
+	//	lcdc_0: endpoint@0 {
+	//		remote-endpoint = <&panel_0>;
+	//	};
+	//};
+};
+
+&i2c2 {
+	status = "okay";
+
+	/* this is the configuration part */
+	clock-frequency = <100000>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	edt-ft5336@38 {
+		status = "okay";
+		compatible = "edt,edt-ft5336", "edt,edt-ft5306", "edt,edt-ft5x06";
+		reg = <0x38>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&edt_ft5336_ts_pins>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <15 0>;
+		reset-gpios = <&gpio3 14 GPIO_ACTIVE_LOW>;
+
+		touchscreen-size-x = <272>;
+		touchscreen-size-y = <480>;
+		touchscreen-swapped-x-y;
+	};
+};
+
+&{/} {
+	backlight: backlight {
+		status = "okay";
+		compatible = "pwm-backlight";
+		pwms = <&ecap2 0 500000 0>;
+		brightness-levels = <
+			0  1  2  3  4  5  6  7  8  9
+			10 11 12 13 14 15 16 17 18 19
+			20 21 22 23 24 25 26 27 28 29
+			30 31 32 33 34 35 36 37 38 39
+			40 41 42 43 44 45 46 47 48 49
+			50 51 52 53 54 55 56 57 58 59
+			60 61 62 63 64 65 66 67 68 69
+			70 71 72 73 74 75 76 77 78 79
+			80 81 82 83 84 85 86 87 88 89
+			90 91 92 93 94 95 96 97 98 99
+			100
+		>;
+		default-brightness-level = <50>;
+	};
+
+	panel {
+		status = "okay";
+		compatible = "ti,tilcdc,panel";
+		pinctrl-names = "default";
+		pinctrl-0 = <&bb_lcd_lcd_pins>;
+		backlight = <&backlight>;
+
+		//FIXME - LCD doesn't init...
+		//port {
+		//	panel_0: endpoint@0 {
+		//		remote-endpoint = <&lcdc_0>;
+		//	};
+		//};
+
+		panel-info {
+			ac-bias           = <255>;
+			ac-bias-intrpt    = <0>;
+			dma-burst-sz      = <16>;
+			bpp               = <16>;
+			fdd               = <0x80>;
+			tft-alt-mode      = <0>;
+			stn-565-mode      = <0>;
+			mono-8bit-mode    = <0>;
+			sync-edge         = <0>;
+			sync-ctrl         = <1>;
+			raster-order      = <0>;
+			fifo-th           = <0>;
+		};
+		/* ILI6480 */
+		display-timings {
+			native-mode = <&timing0>;
+			timing0: 480x272 {
+				clock-frequency = <9000000>;
+				hactive = <480>;
+				vactive = <272>;
+				hfront-porch = <5>;
+				hback-porch = <40>;
+				hsync-len = <1>;
+				vback-porch = <8>;
+				vfront-porch = <8>;
+				vsync-len = <1>;
+				hsync-active = <0>;
+				vsync-active = <0>;
+			};
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-HDMI-TDA998x-00A0.dts b/arch/arm/boot/dts/overlays/BB-HDMI-TDA998x-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-HDMI-TDA998x-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-HDMI-TDA998x-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+#include <dt-bindings/display/tda998x.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-HDMI-TDA998x-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P9_25_pinmux { status = "disabled"; };	/* mcasp0_ahclkx */
+	P9_28_pinmux { status = "disabled"; };	/* mcasp0_axr2 */
+	P9_29_pinmux { status = "disabled"; };	/* mcasp0_fsx */
+	P9_31_pinmux { status = "disabled"; };	/* mcasp0_aclkx */
+	P8_45_pinmux { status = "disabled"; };	/* lcd_data0 */
+	P8_46_pinmux { status = "disabled"; };	/* lcd_data1 */
+	P8_43_pinmux { status = "disabled"; };	/* lcd_data2 */
+	P8_44_pinmux { status = "disabled"; };	/* lcd_data3 */
+	P8_41_pinmux { status = "disabled"; };	/* lcd_data4 */
+	P8_42_pinmux { status = "disabled"; };	/* lcd_data5 */
+	P8_39_pinmux { status = "disabled"; };	/* lcd_data6 */
+	P8_40_pinmux { status = "disabled"; };	/* lcd_data7 */
+	P8_37_pinmux { status = "disabled"; };	/* lcd_data8 */
+	P8_38_pinmux { status = "disabled"; };	/* lcd_data9 */
+	P8_36_pinmux { status = "disabled"; };	/* lcd_data10 */
+	P8_34_pinmux { status = "disabled"; };	/* lcd_data11 */
+	P8_35_pinmux { status = "disabled"; };	/* lcd_data12 */
+	P8_33_pinmux { status = "disabled"; };	/* lcd_data13 */
+	P8_31_pinmux { status = "disabled"; };	/* lcd_data14 */
+	P8_32_pinmux { status = "disabled"; };	/* lcd_data15 */
+	P8_27_pinmux { status = "disabled"; };	/* lcd_vsync */
+	P8_29_pinmux { status = "disabled"; };	/* lcd_hsync */
+	P8_28_pinmux { status = "disabled"; };	/* lcd_pclk */
+	P8_30_pinmux { status = "disabled"; };	/* lcd_ac_bias_en */
+};
+
+&am33xx_pinmux {
+	nxp_hdmi_bonelt_pins: nxp_hdmi_bonelt_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLUP, MUX_MODE7)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+		>;
+	};
+
+	nxp_hdmi_bonelt_off_pins: nxp_hdmi_bonelt_off_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR0, PIN_OUTPUT_PULLDOWN, MUX_MODE7)
+		>;
+	};
+
+	mcasp0_pins: mcasp0_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKX, PIN_INPUT_PULLUP, MUX_MODE0) /* mcasp0_ahcklx.mcasp0_ahclkx */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKR, PIN_OUTPUT_PULLDOWN, MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2*/
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSX, PIN_OUTPUT_PULLUP, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE0)
+			AM33XX_PADCONF(AM335X_PIN_GPMC_A11, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_a11.GPIO1_27 */
+		>;
+	};
+};
+
+&lcdc {
+	status = "okay";
+
+	/* If you want to get 24 bit RGB and 16 BGR mode instead of
+	 * current 16 bit RGB and 24 BGR modes, set the propety
+	 * below to "crossed" and uncomment the video-ports -property
+	 * in tda19988 node.
+	 */
+	blue-and-red-wiring = "straight";
+
+	port {
+		lcdc_0: endpoint@0 {
+			remote-endpoint = <&hdmi_0>;
+		};
+	};
+};
+
+&i2c0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	tda19988: tda19988@70 {
+		compatible = "nxp,tda998x";
+		reg = <0x70>;
+		nxp,calib-gpios = <&gpio1 25 0>;
+		interrupts-extended = <&gpio1 25 IRQ_TYPE_LEVEL_LOW>;
+
+		pinctrl-names = "default", "off";
+		pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
+		pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
+
+		/* Convert 24bit BGR to RGB, e.g. cross red and blue wiring */
+		/* video-ports = <0x234501>; */
+
+		#sound-dai-cells = <0>;
+		audio-ports = <	TDA998x_I2S	0x03>;
+
+		ports {
+			port@0 {
+				hdmi_0: endpoint@0 {
+					remote-endpoint = <&lcdc_0>;
+				};
+			};
+		};
+	};
+};
+
+&mcasp0 {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcasp0_pins>;
+	status = "okay";
+	op-mode = <0>;	/* MCASP_IIS_MODE */
+	tdm-slots = <2>;
+	serial-dir = <	/* 0: INACTIVE, 1: TX, 2: RX */
+			0 0 1 0
+		>;
+	tx-num-evt = <32>;
+	rx-num-evt = <32>;
+};
+
+&{/} {
+	clk_mcasp0_fixed: clk_mcasp0_fixed {
+		#clock-cells = <0>;
+		compatible = "fixed-clock";
+		clock-frequency = <24576000>;
+	};
+
+	clk_mcasp0: clk_mcasp0 {
+		#clock-cells = <0>;
+		compatible = "gpio-gate-clock";
+		clocks = <&clk_mcasp0_fixed>;
+		enable-gpios = <&gpio1 27 0>; /* BeagleBone Black Clk enable on GPIO1_27 */
+	};
+
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "TI BeagleBone Black";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,bitclock-master = <&dailink0_master>;
+		simple-audio-card,frame-master = <&dailink0_master>;
+
+		dailink0_master: simple-audio-card,cpu {
+			sound-dai = <&mcasp0>;
+			clocks = <&clk_mcasp0>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&tda19988>;
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-I2C2-BME680.dts b/arch/arm/boot/dts/overlays/BB-I2C2-BME680.dts
--- a/arch/arm/boot/dts/overlays/BB-I2C2-BME680.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-I2C2-BME680.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Robert Nelson <robertcnelson@gmail.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-I2C2-BME680.kernel = __TIMESTAMP__;
+	};
+};
+
+&i2c2 {
+	status = "okay";
+
+	clock-frequency = <100000>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	bme680@76 {
+		status = "okay";
+		compatible = "bosch,bme680";
+		reg = <0x76>;
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BBORG_COMMS-00A2.dts b/arch/arm/boot/dts/overlays/BBORG_COMMS-00A2.dts
--- a/arch/arm/boot/dts/overlays/BBORG_COMMS-00A2.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BBORG_COMMS-00A2.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012,2019 Texas Instruments Incorporated - https://www.ti.com/
+ * Copyright (C) 2015 Robert Nelson <robertcnelson@gmail.com>
+ * Copyright (C) 2015 Sebastian JegerÃ¥s
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/pinctrl/am33xx.h>
+#include <dt-bindings/gpio/gpio.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BBORG_COMMS-00A2.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P9_24_pinmux { status = "disabled"; };	/* P9_24: uart1_txd.d_can1_rx */
+	P9_26_pinmux { status = "disabled"; };	/* P9_26: uart1_rxd.d_can1_tx */
+	P9_13_pinmux { status = "disabled"; };	/* P9_13: gpmc_wpn.uart4_txd_mux2 */
+	P9_11_pinmux { status = "disabled"; };	/* P9_11: gpmc_wait0.uart4_rxd_mux2 */
+};
+
+&am33xx_pinmux {
+	bborg_comms_can_pins: pinmux_comms_can_pins {
+		pinctrl-single,pins = <
+			0x184 (PIN_INPUT_PULLUP | MUX_MODE2)	/* P9_24: uart1_txd.d_can1_rx */
+			0x180 (PIN_OUTPUT_PULLUP | MUX_MODE2)	/* P9_26: uart1_rxd.d_can1_tx */
+		>;
+	};
+
+	bborg_comms_rs485_pins: pinmux_comms_rs485_pins {
+		pinctrl-single,pins = <
+			0x074 (PIN_OUTPUT | MUX_MODE6)	/* P9_13: gpmc_wpn.uart4_txd_mux2 */
+			0x070 (PIN_INPUT  | MUX_MODE6)	/* P9_11: gpmc_wait0.uart4_rxd_mux2 */
+		>;
+	};
+};
+
+&dcan1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&bborg_comms_can_pins>;
+};
+
+&uart4 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&bborg_comms_rs485_pins>;
+	//rs485-rts-delay = <0 0>;
+	//rts-gpio = <&gpio3 19 1>; /*  GPIO_ACTIVE_HIGH>; */
+	//rs485-rts-active-high;
+	//linux,rs485-enabled-at-boot-time;
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BBORG_FAN-A000.dts b/arch/arm/boot/dts/overlays/BBORG_FAN-A000.dts
--- a/arch/arm/boot/dts/overlays/BBORG_FAN-A000.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BBORG_FAN-A000.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2020 Robert Nelson <robercnelson@gmail.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BBORG_FAN-A000.kernel = __TIMESTAMP__;
+	};
+};
+
+/* From dra7.dtsi opp_nom-1000000000 */
+&cpu0_opp_table {
+	opp_slow-500000000 {
+		opp-hz = /bits/ 64 <1000000000>;
+		opp-microvolt = <1060000 850000 1150000>,
+				<1060000 850000 1150000>;
+		opp-supported-hw = <0xFF 0x01>;
+		opp-suspend;
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BBORG_RELAY-00A2.dts b/arch/arm/boot/dts/overlays/BBORG_RELAY-00A2.dts
--- a/arch/arm/boot/dts/overlays/BBORG_RELAY-00A2.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BBORG_RELAY-00A2.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Robert Nelson <robertcnelson@gmail.com>
+ * Copyright (C) 2019 Amilcar Lucas <amilcar.lucas@iav.de>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BBORG_RELAY-00A2.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P9_41_pinmux { status = "disabled"; };	/* P9_41: gpmc_a0.gpio0_20 */
+	P9_42_pinmux { status = "disabled"; };	/* P9_42: gpmc_a1.gpio0_07 */
+	P9_30_pinmux { status = "disabled"; };	/* P9_30: gpmc_be1n.gpio3_16 */
+	P9_27_pinmux { status = "disabled"; };	/* P9_27: mcasp0_fsr.gpio3_19 */
+};
+
+&am33xx_pinmux {
+	bb_gpio_relay_pins: pinmux_bb_gpio_relay_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_XDMA_EVENT_INTR1, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* P9_41: Relay1 */
+			AM33XX_PADCONF(AM335X_PIN_ECAP0_IN_PWM0_OUT, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* P9_42: Relay2 */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AXR0, PIN_OUTPUT_PULLDOWN, MUX_MODE7)		/* P9_30: Relay3 */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSR, PIN_OUTPUT_PULLDOWN, MUX_MODE7)		/* P9_27: Relay4 */
+		>;
+	};
+};
+
+&{/} {
+	leds {
+		pinctrl-names = "default";
+		pinctrl-0 = <&bb_gpio_relay_pins>;
+
+		compatible = "gpio-leds";
+
+		jp@1 {
+			label = "relay-jp1";
+			gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+
+		jp@2 {
+			label = "relay-jp2";
+			gpios = <&gpio0 07 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+
+		jp@3 {
+			label = "relay-jp3";
+			gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+
+		jp@4 {
+			label = "relay-jp4";
+			gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-SPIDEV0-00A0.dts b/arch/arm/boot/dts/overlays/BB-SPIDEV0-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-SPIDEV0-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-SPIDEV0-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2013 CircuitCo
+ * Virtual cape for SPI0 on connector pins P9.22 P9.21 P9.18 P9.17
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-SPIDEV0-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P9_17_pinmux { status = "disabled"; };	/* P9_17 (A16) spi0_cs0.spi0_cs0 */
+	P9_18_pinmux { status = "disabled"; };	/* P9_18 (B16) spi0_d1.spi0_d1 */
+	P9_21_pinmux { status = "disabled"; };	/* P9_21 (B17) spi0_d0.spi0_d0 */
+	P9_22_pinmux { status = "disabled"; };	/* P9_22 (A17) spi0_sclk.spi0_sclk */
+};
+
+&am33xx_pinmux {
+	bb_spi0_pins: pinmux_bb_spi0_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_SPI0_SCLK, PIN_INPUT, MUX_MODE0)	/* P9_22 (A17) spi0_sclk.spi0_sclk */
+			AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_INPUT, MUX_MODE0)	/* P9_21 (B17) spi0_d0.spi0_d0 */
+			AM33XX_PADCONF(AM335X_PIN_SPI0_D1, PIN_INPUT, MUX_MODE0)	/* P9_18 (B16) spi0_d1.spi0_d1 */
+			AM33XX_PADCONF(AM335X_PIN_SPI0_CS0, PIN_INPUT, MUX_MODE0)	/* P9_17 (A16) spi0_cs0.spi0_cs0 */
+		>;
+	};
+};
+
+&spi0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&bb_spi0_pins>;
+
+	/*
+	 * Select the D0 pin as output and D1 as
+	 * input. The default is D0 as input and
+	 * D1 as output.
+	 */
+	//ti,pindir-d0-out-d1-in;
+
+	channel@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/0.0";
+
+		reg = <0>;
+		spi-max-frequency = <16000000>;
+		spi-cpha;
+	};
+
+	channel@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/0.1";
+
+		reg = <1>;
+		spi-max-frequency = <16000000>;
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-SPIDEV1-00A0.dts b/arch/arm/boot/dts/overlays/BB-SPIDEV1-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-SPIDEV1-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-SPIDEV1-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2013 CircuitCo
+ * Virtual cape for SPI1 on connector pins P9.29 P9.31 P9.30 P9.28
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-SPIDEV1-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P9_28_pinmux { status = "disabled"; };	/* P9_28 (C12) mcasp0_ahclkr.spi1_cs0 */
+	P9_30_pinmux { status = "disabled"; };	/* P9_30 (D12) mcasp0_axr0.spi1_d1 */
+	P9_29_pinmux { status = "disabled"; };	/* P9_29 (B13) mcasp0_fsx.spi1_d0 */
+	P9_31_pinmux { status = "disabled"; };	/* P9_31 (A13) mcasp0_aclkx.spi1_sclk */
+};
+
+&am33xx_pinmux {
+	bb_spi1_pins: pinmux_bb_spi1_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_INPUT, MUX_MODE3)	/* P9_31 (A13) mcasp0_aclkx.spi1_sclk */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_FSX, PIN_INPUT, MUX_MODE3)	/* P9_29 (B13) mcasp0_fsx.spi1_d0 */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AXR0, PIN_INPUT, MUX_MODE3)	/* P9_30 (D12) mcasp0_axr0.spi1_d1 */
+			AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKR, PIN_INPUT, MUX_MODE3)	/* P9_28 (C12) mcasp0_ahclkr.spi1_cs0 */
+		>;
+	};
+};
+
+&spi1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&bb_spi1_pins>;
+
+	/*
+	 * Select the D0 pin as output and D1 as
+	 * input. The default is D0 as input and
+	 * D1 as output.
+	 */
+	//ti,pindir-d0-out-d1-in;
+
+	channel@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/1.0";
+
+		reg = <0>;
+		spi-max-frequency = <16000000>;
+		spi-cpha;
+	};
+
+	channel@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "spidev";
+		symlink = "bone/spi/1.1";
+
+		reg = <1>;
+		spi-max-frequency = <16000000>;
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BB-W1-P9.12-00A0.dts b/arch/arm/boot/dts/overlays/BB-W1-P9.12-00A0.dts
--- a/arch/arm/boot/dts/overlays/BB-W1-P9.12-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BB-W1-P9.12-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2015 Robert Nelson <robertcnelson@gmail.com>
+ * Virtual cape for onewire on connector pin P9.12
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BB-W1-P9.12-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P9_12_pinmux { status = "disabled"; };	/* P9_12 (U18) gpmc_be1n.gpio1_28 */
+};
+
+&am33xx_pinmux {
+	bb_dallas_w1_pins: pinmux_bb_dallas_w1_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_GPMC_BEN1, PIN_INPUT_PULLUP, MUX_MODE7)	/* P9_12 (U18) gpmc_be1n.gpio1_28 */
+		>;
+	};
+};
+
+&{/} {
+	onewire {
+		status = "okay";
+		pinctrl-names = "default";
+		pinctrl-0 = <&bb_dallas_w1_pins>;
+
+		compatible = "w1-gpio";
+		gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+	};
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/BONE-ADC.dts b/arch/arm/boot/dts/overlays/BONE-ADC.dts
--- a/arch/arm/boot/dts/overlays/BONE-ADC.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/BONE-ADC.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2020 Deepak Khatri <deepaklorkhatri7@gmail.com>
+ * See Cape Interface Spec page for more info on Bone Buses
+ * https://elinux.org/Beagleboard:BeagleBone_cape_interface_spec
+ *
+ * Virtual cape for Bone ADC
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		BONE-ADC.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * See these files for the phandles (&bone_*) and other bone bus nodes
+ * am335x-bbb-bone-buses.dtsi
+ */
+&bone_adc {
+	status = "okay";
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
--- a/arch/arm/boot/dts/overlays/Makefile	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/Makefile	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,32 @@
+# Overlays for the BeagleBone platform
+
+dtbo-$(CONFIG_ARCH_OMAP2PLUS) += \
+	AM335X-PRU-UIO-00A0.dtbo	\
+	BB-ADC-00A0.dtbo	\
+	BB-BBBW-WL1835-00A0.dtbo	\
+	BB-BBGG-WL1835-00A0.dtbo	\
+	BB-BBGW-WL1835-00A0.dtbo	\
+	BB-BONE-4D5R-01-00A1.dtbo	\
+	BB-BONE-eMMC1-01-00A0.dtbo	\
+	BB-BONE-LCD4-01-00A1.dtbo	\
+	BB-BONE-NH7C-01-A0.dtbo	\
+	BB-CAPE-DISP-CT4-00A0.dtbo	\
+	BB-HDMI-TDA998x-00A0.dtbo	\
+	BB-I2C2-BME680.dtbo	\
+	BB-SPIDEV0-00A0.dtbo	\
+	BB-SPIDEV1-00A0.dtbo	\
+	BB-W1-P9.12-00A0.dtbo	\
+	BBORG_COMMS-00A2.dtbo	\
+	BBORG_FAN-A000.dtbo	\
+	BBORG_RELAY-00A2.dtbo	\
+	BONE-ADC.dtbo	\
+	M-BB-BBG-00A0.dtbo	\
+	M-BB-BBGG-00A0.dtbo	\
+	PB-MIKROBUS-0.dtbo	\
+	PB-MIKROBUS-1.dtbo
+
+targets += dtbs dtbs_install
+targets += $(dtbo-y)
+
+always-y	:= $(dtbo-y)
+clean-files	:= *.dtbo
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/M-BB-BBG-00A0.dts b/arch/arm/boot/dts/overlays/M-BB-BBG-00A0.dts
--- a/arch/arm/boot/dts/overlays/M-BB-BBG-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/M-BB-BBG-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		M-BB-BBG-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+&{/} {
+	model = "TI AM335x BeagleBone Green";
+	compatible = "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/M-BB-BBGG-00A0.dts b/arch/arm/boot/dts/overlays/M-BB-BBGG-00A0.dts
--- a/arch/arm/boot/dts/overlays/M-BB-BBGG-00A0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/M-BB-BBGG-00A0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		M-BB-BBGG-00A0.kernel = __TIMESTAMP__;
+	};
+};
+
+&{/} {
+	model = "SeeedStudio BeagleBone Green Gateway";
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/PB-MIKROBUS-0.dts b/arch/arm/boot/dts/overlays/PB-MIKROBUS-0.dts
--- a/arch/arm/boot/dts/overlays/PB-MIKROBUS-0.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/PB-MIKROBUS-0.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2020 Vaishnav M A, BeagleBoard.org Foundation.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		PB-MIKROBUS-0.kernel = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P2_01_pinmux { status = "disabled"; };
+	P2_03_pinmux { status = "disabled"; };
+	P2_05_pinmux { status = "disabled"; };
+	P2_07_pinmux { status = "disabled"; };
+	P2_09_pinmux { status = "disabled"; };
+	P2_11_pinmux { status = "disabled"; };
+	P1_12_pinmux { status = "disabled"; };
+	P1_10_pinmux { status = "disabled"; };
+	P1_08_pinmux { status = "disabled"; };
+	P1_06_pinmux { status = "disabled"; };
+	P1_04_pinmux { status = "disabled"; };
+	P1_02_pinmux { status = "disabled"; };
+};
+
+&{/} {
+	aliases {
+		mikrobus0 = "/mikrobus-0";
+	};
+
+	mikrobus-0 {
+		compatible = "linux,mikrobus";
+		status = "okay";
+		pinctrl-names = "default", "pwm_default", "pwm_gpio",
+				"uart_default", "uart_gpio", "i2c_default",
+				"i2c_gpio", "spi_default", "spi_gpio";
+		pinctrl-0 = <
+			&P2_03_gpio_input_pin
+			&P1_04_gpio_pin
+			&P1_02_gpio_pin
+		>;
+		pinctrl-1 = <&P2_01_pwm_pin>;
+		pinctrl-2 = <&P2_01_gpio_pin>;
+		pinctrl-3 = <
+			&P2_05_uart_pin
+			&P2_07_uart_pin
+		>;
+		pinctrl-4 = <
+			&P2_05_gpio_pin
+			&P2_07_gpio_pin
+		>;
+		pinctrl-5 = <
+			&P2_09_i2c_pin
+			&P2_11_i2c_pin
+		>;
+		pinctrl-6 = <
+			&P2_09_gpio_pin
+			&P2_11_gpio_pin
+		>;
+		pinctrl-7 = <
+			&P1_12_spi_pin
+			&P1_10_spi_pin
+			&P1_08_spi_sclk_pin
+			&P1_06_spi_cs_pin
+		>;
+		pinctrl-8 = <
+			&P1_12_gpio_pin
+			&P1_10_gpio_pin
+			&P1_08_gpio_pin
+			&P1_06_gpio_pin
+		>;
+		i2c-adapter = <&i2c1>;
+		spi-master = <0>;
+		spi-cs = <0 1>;
+		uart = <&uart4>;
+		pwms = <&ehrpwm1 0 500000 0>;
+		mikrobus-gpios = <&gpio1 18 0> , <&gpio0 23 0>,
+				 <&gpio0 30 0> , <&gpio0 31 0>,
+				 <&gpio0 15 0> , <&gpio0 14 0>,
+				 <&gpio0 4 0>  , <&gpio0 3 0>,
+				 <&gpio0 2 0>  , <&gpio0 5 0>,
+				 <&gpio2 25 0> , <&gpio2 3 0>;
+	};
+};
+
+&spi0 {
+	status = "okay";
+	channel@0{ status = "disabled"; };
+};
+
+&uart4 {
+	status = "okay";
+	force-empty-serdev-controller;
+};
diff -Naur --no-dereference a/arch/arm/boot/dts/overlays/PB-MIKROBUS-1.dts b/arch/arm/boot/dts/overlays/PB-MIKROBUS-1.dts
--- a/arch/arm/boot/dts/overlays/PB-MIKROBUS-1.dts	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/boot/dts/overlays/PB-MIKROBUS-1.dts	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2020 Vaishnav M A, BeagleBoard.org Foundation.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/am33xx.h>
+
+/*
+ * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
+ */
+&{/chosen} {
+	overlays {
+		PB-MIKROBUS-1 = __TIMESTAMP__;
+	};
+};
+
+/*
+ * Free up the pins used by the cape from the pinmux helpers.
+ */
+&ocp {
+	P1_36_pinmux { status = "disabled"; };
+	P1_34_pinmux { status = "disabled"; };
+	P1_32_pinmux { status = "disabled"; };
+	P1_30_pinmux { status = "disabled"; };
+	P1_28_pinmux { status = "disabled"; };
+	P1_26_pinmux { status = "disabled"; };
+	P2_25_pinmux { status = "disabled"; };
+	P2_27_pinmux { status = "disabled"; };
+	P2_29_pinmux { status = "disabled"; };
+	P2_31_pinmux { status = "disabled"; };
+	P2_33_pinmux { status = "disabled"; };
+	P2_35_pinmux { status = "disabled"; };
+};
+
+&{/} {
+	aliases {
+		mikrobus1 = "/mikrobus-1";
+	};
+
+	mikrobus-1 {
+		compatible = "linux,mikrobus";
+		status = "okay";
+		pinctrl-names = "default", "pwm_default", "pwm_gpio",
+				"uart_default", "uart_gpio", "i2c_default",
+				"i2c_gpio", "spi_default", "spi_gpio";
+		pinctrl-0 = <
+			&P1_34_gpio_input_pin
+			&P2_33_gpio_pin
+			&P2_35_gpio_pin
+		>;
+		pinctrl-1 = <&P1_36_pwm_pin>;
+		pinctrl-2 = <&P1_36_gpio_pin>;
+		pinctrl-3 = <
+			&P1_32_uart_pin
+			&P1_30_uart_pin
+		>;
+		pinctrl-4 = <
+			&P1_32_gpio_pin
+			&P1_30_gpio_pin
+		>;
+		pinctrl-5 = <
+			&P1_26_i2c_pin
+			&P1_28_i2c_pin
+		>;
+		pinctrl-6 = <
+			&P1_26_gpio_pin
+			&P1_28_gpio_pin
+		>;
+		pinctrl-7 = <
+			&P2_25_spi_pin
+			&P2_27_spi_pin
+			&P2_29_spi_sclk_pin
+			&P2_31_spi_cs_pin
+		>;
+		pinctrl-8 = <
+			&P2_25_gpio_pin
+			&P2_27_gpio_pin
+			&P2_29_gpio_pin
+			&P2_31_gpio_pin
+		>;
+		i2c-adapter = <&i2c2>;
+		spi-master = <1>;
+		spi-cs = <1 2>;
+		uart = <&uart0>;
+		pwms = <&ehrpwm0 0 500000 0>;
+		mikrobus-gpios = <&gpio3 14 0> , <&gpio0 26 0>,
+				 <&gpio1 10 0> , <&gpio1 11 0>,
+				 <&gpio0 13 0> , <&gpio0 12 0>,
+				 <&gpio1 9 0>  , <&gpio1 8 0>,
+				 <&gpio0 7 0>  , <&gpio0 19 0>,
+				 <&gpio1 13 0> , <&gpio2 22 0>;
+	};
+};
+
+&spi1 {
+	status = "okay";
+	channel@0{ status = "disabled"; };
+	channel@1{ status = "disabled"; };
+};
+
+&uart0 {
+	status = "okay";
+	force-empty-serdev-controller;
+};
diff -Naur --no-dereference a/arch/arm/configs/rcn-ee_defconfig b/arch/arm/configs/rcn-ee_defconfig
--- a/arch/arm/configs/rcn-ee_defconfig	1969-12-31 19:00:00.000000000 -0500
+++ b/arch/arm/configs/rcn-ee_defconfig	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,2690 @@
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_KERNEL_LZO=y
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BPF_SYSCALL=y
+CONFIG_BPF_JIT=y
+CONFIG_BPF_UNPRIV_DEFAULT_OFF=y
+CONFIG_BPF_LSM=y
+CONFIG_PREEMPT=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_XACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_PSI=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_IKHEADERS=m
+CONFIG_MEMCG=y
+CONFIG_BLK_CGROUP=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_RT_GROUP_SCHED=y
+CONFIG_CGROUP_PIDS=y
+CONFIG_CGROUP_RDMA=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_PERF=y
+CONFIG_CGROUP_BPF=y
+CONFIG_CGROUP_MISC=y
+CONFIG_NAMESPACES=y
+CONFIG_USER_NS=y
+CONFIG_CHECKPOINT_RESTORE=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_SYSFS_SYSCALL is not set
+CONFIG_USERFAULTFD=y
+CONFIG_EMBEDDED=y
+# CONFIG_COMPAT_BRK is not set
+CONFIG_SLAB_FREELIST_RANDOM=y
+CONFIG_SLAB_FREELIST_HARDENED=y
+CONFIG_PROFILING=y
+CONFIG_OMAP_RESET_CLOCKS=y
+CONFIG_SOC_AM33XX=y
+CONFIG_SOC_HAS_OMAP2_SDRC=y
+CONFIG_ARM_THUMBEE=y
+CONFIG_SWP_EMULATE=y
+CONFIG_PL310_ERRATA_588369=y
+CONFIG_PL310_ERRATA_727915=y
+CONFIG_PL310_ERRATA_753970=y
+CONFIG_ARM_ERRATA_430973=y
+CONFIG_ARM_ERRATA_773022=y
+CONFIG_ARM_ERRATA_814220=y
+CONFIG_HAVE_ARM_ARCH_TIMER=y
+CONFIG_ARM_PSCI=y
+CONFIG_HZ_250=y
+CONFIG_THUMB2_KERNEL=y
+# CONFIG_ATAGS is not set
+CONFIG_EFI=y
+# CONFIG_DMI is not set
+CONFIG_CPU_FREQ=y
+CONFIG_CPU_FREQ_STAT=y
+CONFIG_CPU_FREQ_GOV_POWERSAVE=m
+CONFIG_CPU_FREQ_GOV_USERSPACE=m
+CONFIG_CPU_FREQ_GOV_ONDEMAND=m
+CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
+CONFIG_CPUFREQ_DT=y
+# CONFIG_ARM_OMAP2PLUS_CPUFREQ is not set
+CONFIG_CPU_IDLE=y
+CONFIG_ARM_CPUIDLE=y
+CONFIG_ARM_PSCI_CPUIDLE=y
+CONFIG_KERNEL_MODE_NEON=y
+CONFIG_HIBERNATION=y
+CONFIG_PM_AUTOSLEEP=y
+CONFIG_PM_WAKELOCKS=y
+CONFIG_PM_DEBUG=y
+CONFIG_PM_ADVANCED_DEBUG=y
+CONFIG_APM_EMULATION=y
+CONFIG_CRYPTO_SHA1_ARM_NEON=m
+CONFIG_CRYPTO_SHA256_ARM=m
+CONFIG_CRYPTO_SHA512_ARM=m
+CONFIG_CRYPTO_AES_ARM=m
+CONFIG_CRYPTO_AES_ARM_BS=m
+CONFIG_CRYPTO_NHPOLY1305_NEON=m
+CONFIG_KPROBES=y
+CONFIG_JUMP_LABEL=y
+CONFIG_MODULES=y
+CONFIG_MODULE_FORCE_LOAD=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+CONFIG_MODVERSIONS=y
+CONFIG_MODULE_COMPRESS_XZ=y
+CONFIG_BLK_DEV_ZONED=y
+CONFIG_BLK_DEV_THROTTLING=y
+CONFIG_BLK_WBT=y
+CONFIG_BLK_CGROUP_IOCOST=y
+CONFIG_BLK_CGROUP_IOPRIO=y
+CONFIG_BLK_SED_OPAL=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_KARMA_PARTITION=y
+CONFIG_MQ_IOSCHED_KYBER=m
+CONFIG_IOSCHED_BFQ=m
+CONFIG_BFQ_GROUP_IOSCHED=y
+CONFIG_BINFMT_MISC=m
+CONFIG_KSM=y
+CONFIG_FRONTSWAP=y
+CONFIG_CMA=y
+CONFIG_ZSWAP=y
+CONFIG_Z3FOLD=m
+CONFIG_ZSMALLOC=m
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_PACKET_DIAG=m
+CONFIG_UNIX=y
+CONFIG_UNIX_DIAG=m
+CONFIG_XFRM_USER=m
+CONFIG_XFRM_INTERFACE=m
+CONFIG_XFRM_SUB_POLICY=y
+CONFIG_XFRM_STATISTICS=y
+CONFIG_NET_KEY=m
+CONFIG_NET_KEY_MIGRATE=y
+CONFIG_XDP_SOCKETS=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_ADVANCED_ROUTER=y
+CONFIG_IP_FIB_TRIE_STATS=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_VERBOSE=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+CONFIG_IP_PNP_RARP=y
+CONFIG_NET_IPIP=m
+CONFIG_NET_IPGRE_DEMUX=m
+CONFIG_NET_IPGRE=m
+CONFIG_NET_IPGRE_BROADCAST=y
+CONFIG_IP_MROUTE=y
+CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
+CONFIG_NET_IPVTI=m
+CONFIG_NET_FOU_IP_TUNNELS=y
+CONFIG_INET_AH=m
+CONFIG_INET_ESP=m
+CONFIG_INET_ESP_OFFLOAD=m
+CONFIG_INET_IPCOMP=m
+CONFIG_INET_DIAG=m
+CONFIG_INET_UDP_DIAG=m
+CONFIG_INET_RAW_DIAG=m
+CONFIG_INET_DIAG_DESTROY=y
+CONFIG_TCP_CONG_ADVANCED=y
+CONFIG_TCP_CONG_HSTCP=m
+CONFIG_TCP_CONG_HYBLA=m
+CONFIG_TCP_CONG_NV=m
+CONFIG_TCP_CONG_SCALABLE=m
+CONFIG_TCP_CONG_LP=m
+CONFIG_TCP_CONG_VENO=m
+CONFIG_TCP_CONG_YEAH=m
+CONFIG_TCP_CONG_ILLINOIS=m
+CONFIG_TCP_CONG_DCTCP=m
+CONFIG_TCP_CONG_CDG=m
+CONFIG_TCP_CONG_BBR=m
+CONFIG_TCP_MD5SIG=y
+CONFIG_IPV6_ROUTER_PREF=y
+CONFIG_IPV6_ROUTE_INFO=y
+CONFIG_IPV6_OPTIMISTIC_DAD=y
+CONFIG_INET6_AH=m
+CONFIG_INET6_ESP=m
+CONFIG_INET6_ESP_OFFLOAD=m
+CONFIG_INET6_IPCOMP=m
+CONFIG_IPV6_MIP6=y
+CONFIG_IPV6_ILA=m
+CONFIG_IPV6_VTI=m
+CONFIG_IPV6_SIT=m
+CONFIG_IPV6_SIT_6RD=y
+CONFIG_IPV6_GRE=m
+CONFIG_IPV6_SUBTREES=y
+CONFIG_IPV6_MROUTE=y
+CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=y
+CONFIG_IPV6_PIMSM_V2=y
+CONFIG_IPV6_SEG6_LWTUNNEL=y
+CONFIG_IPV6_SEG6_HMAC=y
+CONFIG_NETLABEL=y
+CONFIG_MPTCP=y
+CONFIG_NETFILTER=y
+CONFIG_BRIDGE_NETFILTER=m
+CONFIG_NETFILTER_NETLINK_HOOK=m
+CONFIG_NF_CONNTRACK=m
+CONFIG_NF_CONNTRACK_SECMARK=y
+CONFIG_NF_CONNTRACK_ZONES=y
+CONFIG_NF_CONNTRACK_EVENTS=y
+CONFIG_NF_CONNTRACK_TIMEOUT=y
+CONFIG_NF_CONNTRACK_TIMESTAMP=y
+CONFIG_NF_CONNTRACK_AMANDA=m
+CONFIG_NF_CONNTRACK_FTP=m
+CONFIG_NF_CONNTRACK_H323=m
+CONFIG_NF_CONNTRACK_IRC=m
+CONFIG_NF_CONNTRACK_NETBIOS_NS=m
+CONFIG_NF_CONNTRACK_SNMP=m
+CONFIG_NF_CONNTRACK_PPTP=m
+CONFIG_NF_CONNTRACK_SANE=m
+CONFIG_NF_CONNTRACK_SIP=m
+CONFIG_NF_CONNTRACK_TFTP=m
+CONFIG_NF_CT_NETLINK=m
+CONFIG_NF_CT_NETLINK_TIMEOUT=m
+CONFIG_NF_CT_NETLINK_HELPER=m
+CONFIG_NETFILTER_NETLINK_GLUE_CT=y
+CONFIG_NF_TABLES=m
+CONFIG_NF_TABLES_INET=y
+CONFIG_NF_TABLES_NETDEV=y
+CONFIG_NFT_NUMGEN=m
+CONFIG_NFT_CT=m
+CONFIG_NFT_FLOW_OFFLOAD=m
+CONFIG_NFT_COUNTER=m
+CONFIG_NFT_CONNLIMIT=m
+CONFIG_NFT_LOG=m
+CONFIG_NFT_LIMIT=m
+CONFIG_NFT_MASQ=m
+CONFIG_NFT_REDIR=m
+CONFIG_NFT_NAT=m
+CONFIG_NFT_TUNNEL=m
+CONFIG_NFT_OBJREF=m
+CONFIG_NFT_QUEUE=m
+CONFIG_NFT_QUOTA=m
+CONFIG_NFT_REJECT=m
+CONFIG_NFT_COMPAT=m
+CONFIG_NFT_HASH=m
+CONFIG_NFT_FIB_INET=m
+CONFIG_NFT_XFRM=m
+CONFIG_NFT_SOCKET=m
+CONFIG_NFT_OSF=m
+CONFIG_NFT_TPROXY=m
+CONFIG_NFT_SYNPROXY=m
+CONFIG_NFT_DUP_NETDEV=m
+CONFIG_NFT_FWD_NETDEV=m
+CONFIG_NFT_FIB_NETDEV=m
+CONFIG_NF_FLOW_TABLE_INET=m
+CONFIG_NF_FLOW_TABLE=m
+CONFIG_NETFILTER_XT_SET=m
+CONFIG_NETFILTER_XT_TARGET_AUDIT=m
+CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
+CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
+CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
+CONFIG_NETFILTER_XT_TARGET_CONNSECMARK=m
+CONFIG_NETFILTER_XT_TARGET_CT=m
+CONFIG_NETFILTER_XT_TARGET_DSCP=m
+CONFIG_NETFILTER_XT_TARGET_HMARK=m
+CONFIG_NETFILTER_XT_TARGET_IDLETIMER=m
+CONFIG_NETFILTER_XT_TARGET_LED=m
+CONFIG_NETFILTER_XT_TARGET_LOG=m
+CONFIG_NETFILTER_XT_TARGET_MARK=m
+CONFIG_NETFILTER_XT_TARGET_NFLOG=m
+CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
+CONFIG_NETFILTER_XT_TARGET_TEE=m
+CONFIG_NETFILTER_XT_TARGET_TPROXY=m
+CONFIG_NETFILTER_XT_TARGET_TRACE=m
+CONFIG_NETFILTER_XT_TARGET_SECMARK=m
+CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
+CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m
+CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=m
+CONFIG_NETFILTER_XT_MATCH_BPF=m
+CONFIG_NETFILTER_XT_MATCH_CGROUP=m
+CONFIG_NETFILTER_XT_MATCH_CLUSTER=m
+CONFIG_NETFILTER_XT_MATCH_COMMENT=m
+CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
+CONFIG_NETFILTER_XT_MATCH_CONNLABEL=m
+CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
+CONFIG_NETFILTER_XT_MATCH_CPU=m
+CONFIG_NETFILTER_XT_MATCH_DEVGROUP=m
+CONFIG_NETFILTER_XT_MATCH_DSCP=m
+CONFIG_NETFILTER_XT_MATCH_ESP=m
+CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_HELPER=m
+CONFIG_NETFILTER_XT_MATCH_IPCOMP=m
+CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
+CONFIG_NETFILTER_XT_MATCH_IPVS=m
+CONFIG_NETFILTER_XT_MATCH_LENGTH=m
+CONFIG_NETFILTER_XT_MATCH_LIMIT=m
+CONFIG_NETFILTER_XT_MATCH_MAC=m
+CONFIG_NETFILTER_XT_MATCH_MARK=m
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+CONFIG_NETFILTER_XT_MATCH_NFACCT=m
+CONFIG_NETFILTER_XT_MATCH_OSF=m
+CONFIG_NETFILTER_XT_MATCH_OWNER=m
+CONFIG_NETFILTER_XT_MATCH_POLICY=m
+CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
+CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+CONFIG_NETFILTER_XT_MATCH_QUOTA=m
+CONFIG_NETFILTER_XT_MATCH_RATEEST=m
+CONFIG_NETFILTER_XT_MATCH_REALM=m
+CONFIG_NETFILTER_XT_MATCH_RECENT=m
+CONFIG_NETFILTER_XT_MATCH_SOCKET=m
+CONFIG_NETFILTER_XT_MATCH_STATE=m
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
+CONFIG_NETFILTER_XT_MATCH_STRING=m
+CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
+CONFIG_NETFILTER_XT_MATCH_TIME=m
+CONFIG_NETFILTER_XT_MATCH_U32=m
+CONFIG_IP_SET=m
+CONFIG_IP_SET_BITMAP_IP=m
+CONFIG_IP_SET_BITMAP_IPMAC=m
+CONFIG_IP_SET_BITMAP_PORT=m
+CONFIG_IP_SET_HASH_IP=m
+CONFIG_IP_SET_HASH_IPMARK=m
+CONFIG_IP_SET_HASH_IPPORT=m
+CONFIG_IP_SET_HASH_IPPORTIP=m
+CONFIG_IP_SET_HASH_IPPORTNET=m
+CONFIG_IP_SET_HASH_IPMAC=m
+CONFIG_IP_SET_HASH_MAC=m
+CONFIG_IP_SET_HASH_NETPORTNET=m
+CONFIG_IP_SET_HASH_NET=m
+CONFIG_IP_SET_HASH_NETNET=m
+CONFIG_IP_SET_HASH_NETPORT=m
+CONFIG_IP_SET_HASH_NETIFACE=m
+CONFIG_IP_SET_LIST_SET=m
+CONFIG_IP_VS=m
+CONFIG_IP_VS_IPV6=y
+CONFIG_IP_VS_PROTO_TCP=y
+CONFIG_IP_VS_PROTO_UDP=y
+CONFIG_IP_VS_PROTO_ESP=y
+CONFIG_IP_VS_PROTO_AH=y
+CONFIG_IP_VS_PROTO_SCTP=y
+CONFIG_IP_VS_RR=m
+CONFIG_IP_VS_WRR=m
+CONFIG_IP_VS_LC=m
+CONFIG_IP_VS_WLC=m
+CONFIG_IP_VS_FO=m
+CONFIG_IP_VS_OVF=m
+CONFIG_IP_VS_LBLC=m
+CONFIG_IP_VS_LBLCR=m
+CONFIG_IP_VS_DH=m
+CONFIG_IP_VS_SH=m
+CONFIG_IP_VS_MH=m
+CONFIG_IP_VS_SED=m
+CONFIG_IP_VS_NQ=m
+CONFIG_IP_VS_FTP=m
+CONFIG_IP_VS_PE_SIP=m
+CONFIG_NFT_DUP_IPV4=m
+CONFIG_NFT_FIB_IPV4=m
+CONFIG_NF_TABLES_ARP=y
+CONFIG_NF_FLOW_TABLE_IPV4=m
+CONFIG_NF_LOG_ARP=m
+CONFIG_NF_LOG_IPV4=m
+CONFIG_IP_NF_IPTABLES=m
+CONFIG_IP_NF_MATCH_AH=m
+CONFIG_IP_NF_MATCH_ECN=m
+CONFIG_IP_NF_MATCH_RPFILTER=m
+CONFIG_IP_NF_MATCH_TTL=m
+CONFIG_IP_NF_FILTER=m
+CONFIG_IP_NF_TARGET_REJECT=m
+CONFIG_IP_NF_TARGET_SYNPROXY=m
+CONFIG_IP_NF_NAT=m
+CONFIG_IP_NF_TARGET_MASQUERADE=m
+CONFIG_IP_NF_TARGET_NETMAP=m
+CONFIG_IP_NF_TARGET_REDIRECT=m
+CONFIG_IP_NF_MANGLE=m
+CONFIG_IP_NF_TARGET_CLUSTERIP=m
+CONFIG_IP_NF_TARGET_ECN=m
+CONFIG_IP_NF_TARGET_TTL=m
+CONFIG_IP_NF_RAW=m
+CONFIG_IP_NF_SECURITY=m
+CONFIG_IP_NF_ARPTABLES=m
+CONFIG_IP_NF_ARPFILTER=m
+CONFIG_IP_NF_ARP_MANGLE=m
+CONFIG_NFT_DUP_IPV6=m
+CONFIG_NFT_FIB_IPV6=m
+CONFIG_NF_FLOW_TABLE_IPV6=m
+CONFIG_IP6_NF_IPTABLES=m
+CONFIG_IP6_NF_MATCH_AH=m
+CONFIG_IP6_NF_MATCH_EUI64=m
+CONFIG_IP6_NF_MATCH_FRAG=m
+CONFIG_IP6_NF_MATCH_OPTS=m
+CONFIG_IP6_NF_MATCH_HL=m
+CONFIG_IP6_NF_MATCH_IPV6HEADER=m
+CONFIG_IP6_NF_MATCH_MH=m
+CONFIG_IP6_NF_MATCH_RPFILTER=m
+CONFIG_IP6_NF_MATCH_RT=m
+CONFIG_IP6_NF_MATCH_SRH=m
+CONFIG_IP6_NF_TARGET_HL=m
+CONFIG_IP6_NF_FILTER=m
+CONFIG_IP6_NF_TARGET_REJECT=m
+CONFIG_IP6_NF_TARGET_SYNPROXY=m
+CONFIG_IP6_NF_MANGLE=m
+CONFIG_IP6_NF_RAW=m
+CONFIG_IP6_NF_SECURITY=m
+CONFIG_IP6_NF_NAT=m
+CONFIG_IP6_NF_TARGET_MASQUERADE=m
+CONFIG_IP6_NF_TARGET_NPT=m
+CONFIG_NF_TABLES_BRIDGE=m
+CONFIG_NFT_BRIDGE_META=m
+CONFIG_NFT_BRIDGE_REJECT=m
+CONFIG_NF_CONNTRACK_BRIDGE=m
+CONFIG_BRIDGE_NF_EBTABLES=m
+CONFIG_BRIDGE_EBT_BROUTE=m
+CONFIG_BRIDGE_EBT_T_FILTER=m
+CONFIG_BRIDGE_EBT_T_NAT=m
+CONFIG_BRIDGE_EBT_802_3=m
+CONFIG_BRIDGE_EBT_AMONG=m
+CONFIG_BRIDGE_EBT_ARP=m
+CONFIG_BRIDGE_EBT_IP=m
+CONFIG_BRIDGE_EBT_IP6=m
+CONFIG_BRIDGE_EBT_LIMIT=m
+CONFIG_BRIDGE_EBT_MARK=m
+CONFIG_BRIDGE_EBT_PKTTYPE=m
+CONFIG_BRIDGE_EBT_STP=m
+CONFIG_BRIDGE_EBT_VLAN=m
+CONFIG_BRIDGE_EBT_ARPREPLY=m
+CONFIG_BRIDGE_EBT_DNAT=m
+CONFIG_BRIDGE_EBT_MARK_T=m
+CONFIG_BRIDGE_EBT_REDIRECT=m
+CONFIG_BRIDGE_EBT_SNAT=m
+CONFIG_BRIDGE_EBT_LOG=m
+CONFIG_BRIDGE_EBT_NFLOG=m
+CONFIG_IP_DCCP=m
+CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1=y
+CONFIG_SCTP_COOKIE_HMAC_MD5=y
+CONFIG_RDS=m
+CONFIG_RDS_TCP=m
+CONFIG_TIPC=m
+CONFIG_ATM=m
+CONFIG_ATM_CLIP=m
+CONFIG_ATM_LANE=m
+CONFIG_ATM_MPOA=m
+CONFIG_ATM_BR2684=m
+CONFIG_L2TP=m
+CONFIG_L2TP_DEBUGFS=m
+CONFIG_L2TP_V3=y
+CONFIG_L2TP_IP=m
+CONFIG_L2TP_ETH=m
+CONFIG_BRIDGE=m
+CONFIG_BRIDGE_VLAN_FILTERING=y
+CONFIG_VLAN_8021Q=m
+CONFIG_VLAN_8021Q_GVRP=y
+CONFIG_VLAN_8021Q_MVRP=y
+CONFIG_LLC2=m
+CONFIG_ATALK=m
+CONFIG_DEV_APPLETALK=m
+CONFIG_IPDDP=m
+CONFIG_IPDDP_ENCAP=y
+CONFIG_PHONET=m
+CONFIG_6LOWPAN=m
+CONFIG_6LOWPAN_GHC_EXT_HDR_HOP=m
+CONFIG_6LOWPAN_GHC_UDP=m
+CONFIG_6LOWPAN_GHC_ICMPV6=m
+CONFIG_6LOWPAN_GHC_EXT_HDR_DEST=m
+CONFIG_6LOWPAN_GHC_EXT_HDR_FRAG=m
+CONFIG_6LOWPAN_GHC_EXT_HDR_ROUTE=m
+CONFIG_IEEE802154=m
+CONFIG_IEEE802154_6LOWPAN=m
+CONFIG_MAC802154=m
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_CBQ=m
+CONFIG_NET_SCH_HTB=m
+CONFIG_NET_SCH_HFSC=m
+CONFIG_NET_SCH_ATM=m
+CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_MULTIQ=m
+CONFIG_NET_SCH_RED=m
+CONFIG_NET_SCH_SFB=m
+CONFIG_NET_SCH_SFQ=m
+CONFIG_NET_SCH_TEQL=m
+CONFIG_NET_SCH_TBF=m
+CONFIG_NET_SCH_CBS=m
+CONFIG_NET_SCH_ETF=m
+CONFIG_NET_SCH_TAPRIO=m
+CONFIG_NET_SCH_GRED=m
+CONFIG_NET_SCH_DSMARK=m
+CONFIG_NET_SCH_NETEM=m
+CONFIG_NET_SCH_DRR=m
+CONFIG_NET_SCH_MQPRIO=m
+CONFIG_NET_SCH_SKBPRIO=m
+CONFIG_NET_SCH_CHOKE=m
+CONFIG_NET_SCH_QFQ=m
+CONFIG_NET_SCH_CODEL=m
+CONFIG_NET_SCH_FQ_CODEL=m
+CONFIG_NET_SCH_CAKE=m
+CONFIG_NET_SCH_FQ=m
+CONFIG_NET_SCH_HHF=m
+CONFIG_NET_SCH_PIE=m
+CONFIG_NET_SCH_FQ_PIE=m
+CONFIG_NET_SCH_INGRESS=m
+CONFIG_NET_SCH_PLUG=m
+CONFIG_NET_SCH_ETS=m
+CONFIG_NET_CLS_BASIC=m
+CONFIG_NET_CLS_TCINDEX=m
+CONFIG_NET_CLS_ROUTE4=m
+CONFIG_NET_CLS_FW=m
+CONFIG_NET_CLS_U32=m
+CONFIG_CLS_U32_PERF=y
+CONFIG_CLS_U32_MARK=y
+CONFIG_NET_CLS_RSVP=m
+CONFIG_NET_CLS_RSVP6=m
+CONFIG_NET_CLS_FLOW=m
+CONFIG_NET_CLS_CGROUP=m
+CONFIG_NET_CLS_BPF=m
+CONFIG_NET_CLS_FLOWER=m
+CONFIG_NET_CLS_MATCHALL=m
+CONFIG_NET_EMATCH=y
+CONFIG_NET_EMATCH_CMP=m
+CONFIG_NET_EMATCH_NBYTE=m
+CONFIG_NET_EMATCH_U32=m
+CONFIG_NET_EMATCH_META=m
+CONFIG_NET_EMATCH_TEXT=m
+CONFIG_NET_EMATCH_CANID=m
+CONFIG_NET_EMATCH_IPSET=m
+CONFIG_NET_EMATCH_IPT=m
+CONFIG_NET_CLS_ACT=y
+CONFIG_NET_ACT_POLICE=m
+CONFIG_NET_ACT_GACT=m
+CONFIG_GACT_PROB=y
+CONFIG_NET_ACT_MIRRED=m
+CONFIG_NET_ACT_SAMPLE=m
+CONFIG_NET_ACT_IPT=m
+CONFIG_NET_ACT_NAT=m
+CONFIG_NET_ACT_PEDIT=m
+CONFIG_NET_ACT_SIMP=m
+CONFIG_NET_ACT_SKBEDIT=m
+CONFIG_NET_ACT_CSUM=m
+CONFIG_NET_ACT_MPLS=m
+CONFIG_NET_ACT_VLAN=m
+CONFIG_NET_ACT_BPF=m
+CONFIG_NET_ACT_CONNMARK=m
+CONFIG_NET_ACT_CTINFO=m
+CONFIG_NET_ACT_SKBMOD=m
+CONFIG_NET_ACT_IFE=m
+CONFIG_NET_ACT_TUNNEL_KEY=m
+CONFIG_NET_ACT_CT=m
+CONFIG_NET_ACT_GATE=m
+CONFIG_NET_IFE_SKBMARK=m
+CONFIG_NET_IFE_SKBPRIO=m
+CONFIG_NET_IFE_SKBTCINDEX=m
+CONFIG_DCB=y
+CONFIG_BATMAN_ADV=m
+CONFIG_BATMAN_ADV_NC=y
+CONFIG_OPENVSWITCH=m
+CONFIG_VSOCKETS=m
+CONFIG_VIRTIO_VSOCKETS=m
+CONFIG_NETLINK_DIAG=m
+CONFIG_NET_MPLS_GSO=y
+CONFIG_MPLS_ROUTING=m
+CONFIG_MPLS_IPTUNNEL=m
+CONFIG_NET_SWITCHDEV=y
+CONFIG_QRTR=m
+CONFIG_NET_NCSI=y
+CONFIG_CGROUP_NET_PRIO=y
+CONFIG_BPF_STREAM_PARSER=y
+CONFIG_NET_PKTGEN=m
+CONFIG_NET_DROP_MONITOR=y
+CONFIG_HAMRADIO=y
+CONFIG_AX25=m
+CONFIG_NETROM=m
+CONFIG_ROSE=m
+CONFIG_MKISS=m
+CONFIG_6PACK=m
+CONFIG_BPQETHER=m
+CONFIG_BAYCOM_SER_FDX=m
+CONFIG_BAYCOM_SER_HDX=m
+CONFIG_YAM=m
+CONFIG_CAN=y
+CONFIG_CAN_RAW=m
+CONFIG_CAN_BCM=m
+CONFIG_CAN_GW=m
+CONFIG_CAN_J1939=m
+CONFIG_CAN_ISOTP=m
+CONFIG_CAN_VCAN=m
+CONFIG_CAN_VXCAN=m
+CONFIG_CAN_SLCAN=m
+CONFIG_CAN_C_CAN=y
+CONFIG_CAN_C_CAN_PLATFORM=y
+CONFIG_CAN_HI311X=m
+CONFIG_CAN_MCP251X=m
+CONFIG_CAN_MCP251XFD=m
+CONFIG_CAN_8DEV_USB=m
+CONFIG_CAN_EMS_USB=m
+CONFIG_CAN_ESD_USB2=m
+CONFIG_CAN_GS_USB=m
+CONFIG_CAN_KVASER_USB=m
+CONFIG_CAN_MCBA_USB=m
+CONFIG_CAN_PEAK_USB=m
+CONFIG_CAN_UCAN=m
+CONFIG_BT=m
+CONFIG_BT_RFCOMM=m
+CONFIG_BT_RFCOMM_TTY=y
+CONFIG_BT_BNEP=m
+CONFIG_BT_BNEP_MC_FILTER=y
+CONFIG_BT_BNEP_PROTO_FILTER=y
+CONFIG_BT_HIDP=m
+CONFIG_BT_HS=y
+CONFIG_BT_6LOWPAN=m
+CONFIG_BT_LEDS=y
+CONFIG_BT_MSFTEXT=y
+CONFIG_BT_AOSPEXT=y
+CONFIG_BT_HCIBTUSB=m
+CONFIG_BT_HCIBTUSB_MTK=y
+CONFIG_BT_HCIBTSDIO=m
+CONFIG_BT_HCIUART=m
+CONFIG_BT_HCIUART_ATH3K=y
+CONFIG_BT_HCIUART_LL=y
+CONFIG_BT_HCIUART_BCM=y
+CONFIG_BT_HCIUART_RTL=y
+CONFIG_BT_HCIUART_QCA=y
+CONFIG_BT_HCIUART_MRVL=y
+CONFIG_BT_HCIBCM203X=m
+CONFIG_BT_HCIBPA10X=m
+CONFIG_BT_HCIBFUSB=m
+CONFIG_BT_MRVL=m
+CONFIG_BT_MRVL_SDIO=m
+CONFIG_BT_ATH3K=m
+CONFIG_BT_MTKSDIO=m
+CONFIG_BT_MTKUART=m
+CONFIG_AF_RXRPC_IPV6=y
+CONFIG_RXKAD=y
+CONFIG_CFG80211=m
+# CONFIG_CFG80211_DEFAULT_PS is not set
+CONFIG_MAC80211=m
+CONFIG_MAC80211_MESH=y
+CONFIG_RFKILL=y
+CONFIG_RFKILL_INPUT=y
+CONFIG_NET_9P=m
+CONFIG_NET_9P_VIRTIO=m
+CONFIG_NFC=m
+CONFIG_NFC_DIGITAL=m
+CONFIG_NFC_NCI=m
+CONFIG_NFC_TRF7970A=m
+CONFIG_NFC_SIM=m
+CONFIG_NFC_PORT100=m
+CONFIG_NFC_PN533_USB=m
+CONFIG_NFC_PN533_I2C=m
+CONFIG_NFC_ST_NCI_I2C=m
+CONFIG_NFC_ST_NCI_SPI=m
+CONFIG_NFC_NXP_NCI=m
+CONFIG_NFC_NXP_NCI_I2C=m
+CONFIG_NFC_ST95HF=m
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_EXTRA_FIRMWARE="regulatory.db regulatory.db.p7s am335x-pm-firmware.elf am335x-bone-scale-data.bin am335x-evm-scale-data.bin am43x-evm-scale-data.bin"
+CONFIG_EXTRA_FIRMWARE_DIR="firmware"
+CONFIG_OMAP_INTERCONNECT=y
+CONFIG_CONNECTOR=y
+CONFIG_EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER=y
+CONFIG_EFI_BOOTLOADER_CONTROL=m
+CONFIG_EFI_CAPSULE_LOADER=m
+CONFIG_RESET_ATTACK_MITIGATION=y
+CONFIG_GNSS=m
+CONFIG_GNSS_MTK_SERIAL=m
+CONFIG_GNSS_SIRF_SERIAL=m
+CONFIG_GNSS_UBX_SERIAL=m
+CONFIG_MTD=y
+CONFIG_MTD_AR7_PARTS=m
+CONFIG_MTD_OF_PARTS=m
+CONFIG_MTD_BLOCK=m
+CONFIG_MTD_BLOCK_RO=m
+CONFIG_RFD_FTL=m
+CONFIG_SSFDC=m
+CONFIG_MTD_OOPS=m
+CONFIG_MTD_SWAP=m
+CONFIG_MTD_PHYSMAP=m
+CONFIG_MTD_PLATRAM=m
+CONFIG_MTD_DATAFLASH=m
+CONFIG_MTD_SST25L=m
+CONFIG_MTD_ONENAND=y
+CONFIG_MTD_ONENAND_VERIFY_WRITE=y
+CONFIG_MTD_ONENAND_2X_PROGRAM=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_MTD_NAND_OMAP2=m
+CONFIG_MTD_NAND_NANDSIM=m
+CONFIG_MTD_NAND_ECC_SW_BCH=y
+CONFIG_MTD_LPDDR=m
+CONFIG_MTD_SPI_NOR=m
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BLOCK=y
+CONFIG_OF_OVERLAY=y
+CONFIG_BLK_DEV_NULL_BLK=m
+CONFIG_ZRAM=m
+CONFIG_ZRAM_WRITEBACK=y
+CONFIG_ZRAM_MEMORY_TRACKING=y
+CONFIG_BLK_DEV_LOOP=m
+CONFIG_BLK_DEV_DRBD=m
+CONFIG_BLK_DEV_NBD=m
+CONFIG_BLK_DEV_RAM=m
+CONFIG_BLK_DEV_RAM_SIZE=16384
+CONFIG_ATA_OVER_ETH=m
+CONFIG_VIRTIO_BLK=m
+CONFIG_BLK_DEV_RBD=m
+CONFIG_AD525X_DPOT=m
+CONFIG_AD525X_DPOT_I2C=m
+CONFIG_AD525X_DPOT_SPI=m
+CONFIG_ICS932S401=m
+CONFIG_APDS9802ALS=m
+CONFIG_ISL29003=m
+CONFIG_ISL29020=m
+CONFIG_SENSORS_TSL2550=m
+CONFIG_SENSORS_BH1770=m
+CONFIG_SENSORS_APDS990X=m
+CONFIG_HMC6352=m
+CONFIG_DS1682=m
+CONFIG_SRAM=y
+CONFIG_EEPROM_AT24=y
+CONFIG_EEPROM_AT25=y
+CONFIG_EEPROM_LEGACY=m
+CONFIG_EEPROM_MAX6875=m
+CONFIG_TI_ST=m
+CONFIG_BEAGLEBONE_PINMUX_HELPER=y
+CONFIG_MIKROBUS=y
+CONFIG_RAID_ATTRS=m
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_ST=m
+CONFIG_BLK_DEV_SR=m
+CONFIG_CHR_DEV_SG=m
+CONFIG_CHR_DEV_SCH=m
+CONFIG_SCSI_CONSTANTS=y
+CONFIG_SCSI_LOGGING=y
+CONFIG_SCSI_SCAN_ASYNC=y
+CONFIG_SCSI_SPI_ATTRS=m
+CONFIG_SCSI_FC_ATTRS=m
+CONFIG_SCSI_SAS_LIBSAS=m
+CONFIG_SCSI_SAS_ATA=y
+CONFIG_SCSI_SRP_ATTRS=m
+CONFIG_ISCSI_TCP=m
+CONFIG_ISCSI_BOOT_SYSFS=m
+CONFIG_SCSI_UFSHCD=m
+CONFIG_LIBFC=m
+CONFIG_LIBFCOE=m
+CONFIG_SCSI_VIRTIO=m
+CONFIG_SCSI_DH=y
+CONFIG_SCSI_DH_RDAC=m
+CONFIG_SCSI_DH_HP_SW=m
+CONFIG_SCSI_DH_EMC=m
+CONFIG_SCSI_DH_ALUA=m
+CONFIG_ATA=y
+# CONFIG_ATA_FORCE is not set
+# CONFIG_ATA_SFF is not set
+CONFIG_MD=y
+CONFIG_BLK_DEV_MD=m
+CONFIG_MD_LINEAR=m
+CONFIG_MD_RAID0=m
+CONFIG_MD_RAID1=m
+CONFIG_MD_RAID10=m
+CONFIG_MD_MULTIPATH=m
+CONFIG_MD_FAULTY=m
+CONFIG_MD_CLUSTER=m
+CONFIG_BCACHE=m
+CONFIG_BLK_DEV_DM=m
+CONFIG_DM_UNSTRIPED=m
+CONFIG_DM_CRYPT=m
+CONFIG_DM_SNAPSHOT=m
+CONFIG_DM_THIN_PROVISIONING=m
+CONFIG_DM_CACHE=m
+CONFIG_DM_WRITECACHE=m
+CONFIG_DM_ERA=m
+CONFIG_DM_MIRROR=m
+CONFIG_DM_LOG_USERSPACE=m
+CONFIG_DM_ZERO=m
+CONFIG_DM_MULTIPATH=m
+CONFIG_DM_MULTIPATH_QL=m
+CONFIG_DM_MULTIPATH_ST=m
+CONFIG_DM_DELAY=m
+CONFIG_DM_UEVENT=y
+CONFIG_DM_FLAKEY=m
+CONFIG_DM_VERITY=m
+CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG=y
+CONFIG_DM_SWITCH=m
+CONFIG_DM_LOG_WRITES=m
+CONFIG_DM_INTEGRITY=m
+CONFIG_DM_ZONED=m
+CONFIG_TARGET_CORE=m
+CONFIG_TCM_IBLOCK=m
+CONFIG_TCM_FILEIO=m
+CONFIG_TCM_PSCSI=m
+CONFIG_TCM_USER2=m
+CONFIG_LOOPBACK_TARGET=m
+CONFIG_TCM_FC=m
+CONFIG_ISCSI_TARGET=m
+CONFIG_NETDEVICES=y
+CONFIG_BONDING=m
+CONFIG_DUMMY=m
+CONFIG_WIREGUARD=m
+CONFIG_EQUALIZER=m
+CONFIG_IFB=m
+CONFIG_NET_TEAM=m
+CONFIG_NET_TEAM_MODE_BROADCAST=m
+CONFIG_NET_TEAM_MODE_ROUNDROBIN=m
+CONFIG_NET_TEAM_MODE_RANDOM=m
+CONFIG_NET_TEAM_MODE_ACTIVEBACKUP=m
+CONFIG_NET_TEAM_MODE_LOADBALANCE=m
+CONFIG_MACVLAN=m
+CONFIG_MACVTAP=m
+CONFIG_IPVLAN=m
+CONFIG_IPVTAP=m
+CONFIG_VXLAN=m
+CONFIG_GENEVE=m
+CONFIG_GTP=m
+CONFIG_MACSEC=m
+CONFIG_NETCONSOLE=m
+CONFIG_NETCONSOLE_DYNAMIC=y
+CONFIG_TUN=m
+CONFIG_VETH=m
+CONFIG_VIRTIO_NET=m
+CONFIG_NLMON=m
+CONFIG_NET_VRF=m
+CONFIG_ATM_DUMMY=m
+# CONFIG_NET_VENDOR_ALACRITECH is not set
+# CONFIG_NET_VENDOR_AMAZON is not set
+# CONFIG_NET_VENDOR_AQUANTIA is not set
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_CADENCE is not set
+# CONFIG_NET_VENDOR_CAVIUM is not set
+# CONFIG_NET_VENDOR_CIRRUS is not set
+# CONFIG_NET_VENDOR_CORTINA is not set
+# CONFIG_NET_VENDOR_EZCHIP is not set
+# CONFIG_NET_VENDOR_FARADAY is not set
+# CONFIG_NET_VENDOR_GOOGLE is not set
+# CONFIG_NET_VENDOR_HISILICON is not set
+# CONFIG_NET_VENDOR_HUAWEI is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MELLANOX is not set
+CONFIG_KS8851=m
+CONFIG_ENC28J60=y
+CONFIG_ENCX24J600=y
+# CONFIG_NET_VENDOR_NI is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_NETRONOME is not set
+# CONFIG_NET_VENDOR_PENSANDO is not set
+# CONFIG_NET_VENDOR_QUALCOMM is not set
+# CONFIG_NET_VENDOR_RENESAS is not set
+# CONFIG_NET_VENDOR_ROCKER is not set
+# CONFIG_NET_VENDOR_SAMSUNG is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SOLARFLARE is not set
+CONFIG_SMC91X=m
+CONFIG_SMC911X=m
+CONFIG_SMSC911X=m
+# CONFIG_NET_VENDOR_SOCIONEXT is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_SYNOPSYS is not set
+CONFIG_TI_CPSW=y
+CONFIG_TI_CPSW_SWITCHDEV=y
+CONFIG_TI_CPTS=y
+# CONFIG_NET_VENDOR_VIA is not set
+CONFIG_WIZNET_W5100=y
+CONFIG_WIZNET_W5100_SPI=y
+# CONFIG_NET_VENDOR_XILINX is not set
+CONFIG_LED_TRIGGER_PHY=y
+CONFIG_MICREL_PHY=y
+CONFIG_MICROCHIP_PHY=y
+CONFIG_MICROSEMI_PHY=m
+CONFIG_AT803X_PHY=y
+CONFIG_SMSC_PHY=y
+CONFIG_DP83867_PHY=y
+CONFIG_VITESSE_PHY=y
+CONFIG_PPP=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPP_FILTER=y
+CONFIG_PPP_MPPE=m
+CONFIG_PPP_MULTILINK=y
+CONFIG_PPPOATM=m
+CONFIG_PPPOE=m
+CONFIG_PPTP=m
+CONFIG_PPPOL2TP=m
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_SYNC_TTY=m
+CONFIG_SLIP=m
+CONFIG_SLIP_COMPRESSED=y
+CONFIG_SLIP_SMART=y
+CONFIG_SLIP_MODE_SLIP6=y
+CONFIG_USB_NET_DRIVERS=m
+CONFIG_USB_CATC=m
+CONFIG_USB_KAWETH=m
+CONFIG_USB_PEGASUS=m
+CONFIG_USB_RTL8150=m
+CONFIG_USB_RTL8152=m
+CONFIG_USB_LAN78XX=m
+CONFIG_USB_NET_CDC_EEM=m
+CONFIG_USB_NET_HUAWEI_CDC_NCM=m
+CONFIG_USB_NET_CDC_MBIM=m
+CONFIG_USB_NET_DM9601=m
+CONFIG_USB_NET_SR9700=m
+CONFIG_USB_NET_SR9800=m
+CONFIG_USB_NET_SMSC75XX=m
+CONFIG_USB_NET_SMSC95XX=m
+CONFIG_USB_NET_GL620A=m
+CONFIG_USB_NET_PLUSB=m
+CONFIG_USB_NET_MCS7830=m
+CONFIG_USB_ALI_M5632=y
+CONFIG_USB_AN2720=y
+CONFIG_USB_EPSON2888=y
+CONFIG_USB_KC2190=y
+CONFIG_USB_NET_CX82310_ETH=m
+CONFIG_USB_NET_KALMIA=m
+CONFIG_USB_NET_QMI_WWAN=m
+CONFIG_USB_HSO=m
+CONFIG_USB_NET_INT51X1=m
+CONFIG_USB_CDC_PHONET=m
+CONFIG_USB_IPHETH=m
+CONFIG_USB_SIERRA_NET=m
+CONFIG_USB_VL600=m
+CONFIG_USB_NET_CH9200=m
+CONFIG_USB_NET_AQC111=m
+CONFIG_USB_RTL8153_ECM=m
+CONFIG_ATH9K=m
+CONFIG_ATH9K_CHANNEL_CONTEXT=y
+CONFIG_ATH9K_HTC=m
+CONFIG_ATH9K_HWRNG=y
+CONFIG_CARL9170=m
+CONFIG_ATH6KL=m
+CONFIG_ATH6KL_SDIO=m
+CONFIG_ATH6KL_USB=m
+CONFIG_AR5523=m
+CONFIG_ATH10K=m
+CONFIG_ATH10K_USB=m
+CONFIG_ATH11K=m
+CONFIG_ATH11K_AHB=m
+CONFIG_AT76C50X_USB=m
+CONFIG_BRCMFMAC=m
+CONFIG_BRCMFMAC_USB=y
+CONFIG_HOSTAP=m
+CONFIG_HOSTAP_FIRMWARE=y
+CONFIG_P54_COMMON=m
+CONFIG_P54_USB=m
+CONFIG_LIBERTAS=m
+CONFIG_LIBERTAS_USB=m
+CONFIG_LIBERTAS_SDIO=m
+CONFIG_LIBERTAS_MESH=y
+CONFIG_LIBERTAS_THINFIRM=m
+CONFIG_LIBERTAS_THINFIRM_USB=m
+CONFIG_MT7601U=m
+CONFIG_MT76x0U=m
+CONFIG_MT76x2U=m
+CONFIG_MT7663U=m
+CONFIG_WILC1000_SDIO=m
+CONFIG_WILC1000_SPI=m
+CONFIG_RT2X00=m
+CONFIG_RT2500USB=m
+CONFIG_RT73USB=m
+CONFIG_RT2800USB=m
+CONFIG_RT2800USB_RT3573=y
+CONFIG_RT2800USB_RT53XX=y
+CONFIG_RT2800USB_RT55XX=y
+CONFIG_RTL8187=m
+CONFIG_RTL8192CU=m
+# CONFIG_RTLWIFI_DEBUG is not set
+CONFIG_RTL8XXXU=m
+CONFIG_RTW88=m
+CONFIG_RSI_91X=m
+# CONFIG_RSI_SDIO is not set
+CONFIG_WL1251=m
+CONFIG_WL1251_SPI=m
+CONFIG_WL1251_SDIO=m
+CONFIG_WL12XX=m
+CONFIG_WL18XX=m
+CONFIG_WLCORE_SPI=m
+CONFIG_WLCORE_SDIO=m
+CONFIG_ZD1211RW=m
+CONFIG_MAC80211_HWSIM=m
+CONFIG_USB_NET_RNDIS_WLAN=m
+CONFIG_IEEE802154_AT86RF230=m
+CONFIG_IEEE802154_MRF24J40=m
+CONFIG_IEEE802154_CC2520=m
+CONFIG_IEEE802154_ATUSB=m
+CONFIG_IEEE802154_WPANUSB=m
+CONFIG_IEEE802154_ADF7242=m
+CONFIG_IEEE802154_CA8210=m
+CONFIG_IEEE802154_MCR20A=m
+CONFIG_IEEE802154_HWSIM=m
+CONFIG_IEEE802154_BCFSERIAL=m
+CONFIG_INPUT_SPARSEKMAP=m
+CONFIG_INPUT_JOYDEV=m
+CONFIG_INPUT_EVDEV=m
+CONFIG_KEYBOARD_ADP5588=m
+# CONFIG_KEYBOARD_ATKBD is not set
+CONFIG_KEYBOARD_QT2160=m
+CONFIG_KEYBOARD_GPIO=y
+CONFIG_KEYBOARD_TCA8418=m
+CONFIG_KEYBOARD_LM8323=m
+CONFIG_KEYBOARD_MAX7359=m
+CONFIG_KEYBOARD_STOWAWAY=m
+# CONFIG_MOUSE_PS2 is not set
+CONFIG_MOUSE_APPLETOUCH=m
+CONFIG_MOUSE_ELAN_I2C=m
+CONFIG_MOUSE_SYNAPTICS_I2C=m
+CONFIG_MOUSE_SYNAPTICS_USB=m
+CONFIG_INPUT_JOYSTICK=y
+CONFIG_JOYSTICK_IFORCE=m
+CONFIG_JOYSTICK_IFORCE_USB=m
+CONFIG_JOYSTICK_IFORCE_232=m
+CONFIG_JOYSTICK_WARRIOR=m
+CONFIG_JOYSTICK_MAGELLAN=m
+CONFIG_JOYSTICK_SPACEORB=m
+CONFIG_JOYSTICK_SPACEBALL=m
+CONFIG_JOYSTICK_STINGER=m
+CONFIG_JOYSTICK_TWIDJOY=m
+CONFIG_JOYSTICK_ZHENHUA=m
+CONFIG_JOYSTICK_AS5011=m
+CONFIG_JOYSTICK_XPAD=m
+CONFIG_JOYSTICK_XPAD_FF=y
+CONFIG_JOYSTICK_XPAD_LEDS=y
+CONFIG_JOYSTICK_PSXPAD_SPI=y
+CONFIG_JOYSTICK_PSXPAD_SPI_FF=y
+CONFIG_JOYSTICK_PXRC=m
+CONFIG_JOYSTICK_QWIIC=m
+CONFIG_JOYSTICK_FSIA6B=m
+CONFIG_INPUT_TABLET=y
+CONFIG_TABLET_USB_ACECAD=m
+CONFIG_TABLET_USB_AIPTEK=m
+CONFIG_TABLET_USB_HANWANG=m
+CONFIG_TABLET_USB_KBTAB=m
+CONFIG_TABLET_USB_PEGASUS=m
+CONFIG_TABLET_SERIAL_WACOM4=m
+CONFIG_INPUT_TOUCHSCREEN=y
+CONFIG_TOUCHSCREEN_ADS7846=m
+CONFIG_TOUCHSCREEN_AD7877=m
+CONFIG_TOUCHSCREEN_AD7879=m
+CONFIG_TOUCHSCREEN_AD7879_I2C=m
+CONFIG_TOUCHSCREEN_AR1021_I2C=y
+CONFIG_TOUCHSCREEN_ATMEL_MXT=m
+CONFIG_TOUCHSCREEN_DYNAPRO=m
+CONFIG_TOUCHSCREEN_HAMPSHIRE=m
+CONFIG_TOUCHSCREEN_FUJITSU=m
+CONFIG_TOUCHSCREEN_GOODIX=m
+CONFIG_TOUCHSCREEN_GUNZE=m
+CONFIG_TOUCHSCREEN_ELO=m
+CONFIG_TOUCHSCREEN_WACOM_W8001=m
+CONFIG_TOUCHSCREEN_MCS5000=m
+CONFIG_TOUCHSCREEN_MTOUCH=m
+CONFIG_TOUCHSCREEN_INEXIO=m
+CONFIG_TOUCHSCREEN_MK712=m
+CONFIG_TOUCHSCREEN_PENMOUNT=m
+CONFIG_TOUCHSCREEN_EDT_FT5X06=y
+CONFIG_TOUCHSCREEN_TOUCHRIGHT=m
+CONFIG_TOUCHSCREEN_TOUCHWIN=m
+CONFIG_TOUCHSCREEN_TI_AM335X_TSC=y
+CONFIG_TOUCHSCREEN_USB_COMPOSITE=m
+CONFIG_TOUCHSCREEN_TSC2005=m
+CONFIG_TOUCHSCREEN_TSC2007=m
+CONFIG_TOUCHSCREEN_SILEAD=m
+CONFIG_TOUCHSCREEN_TPS6507X=m
+CONFIG_INPUT_MISC=y
+CONFIG_INPUT_MMA8450=m
+CONFIG_INPUT_ATI_REMOTE2=m
+CONFIG_INPUT_KEYSPAN_REMOTE=m
+CONFIG_INPUT_POWERMATE=m
+CONFIG_INPUT_YEALINK=m
+CONFIG_INPUT_CM109=m
+CONFIG_INPUT_TPS65218_PWRBUTTON=y
+CONFIG_INPUT_UINPUT=m
+CONFIG_RMI4_F34=y
+CONFIG_RMI4_F55=y
+# CONFIG_LEGACY_PTYS is not set
+CONFIG_SERIAL_8250=y
+# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
+# CONFIG_SERIAL_8250_16550A_VARIANTS is not set
+CONFIG_SERIAL_8250_CONSOLE=y
+# CONFIG_SERIAL_8250_DMA is not set
+CONFIG_SERIAL_8250_NR_UARTS=6
+CONFIG_SERIAL_8250_RUNTIME_UARTS=6
+CONFIG_SERIAL_8250_OMAP=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIAL_MAX3100=m
+CONFIG_SERIAL_MAX310X=m
+CONFIG_N_GSM=m
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_TTY_PRINTK=m
+CONFIG_VIRTIO_CONSOLE=m
+CONFIG_HW_RANDOM_VIRTIO=m
+CONFIG_TCG_TPM=y
+CONFIG_TCG_TIS_I2C_ATMEL=y
+CONFIG_RANDOM_TRUST_BOOTLOADER=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_ARB_GPIO_CHALLENGE=m
+CONFIG_I2C_MUX_GPIO=y
+CONFIG_I2C_MUX_PCA954x=m
+CONFIG_I2C_MUX_PINCTRL=y
+CONFIG_I2C_GPIO=y
+CONFIG_I2C_DIOLAN_U2C=m
+CONFIG_I2C_ROBOTFUZZ_OSIF=m
+CONFIG_I2C_TAOS_EVM=m
+CONFIG_I2C_TINY_USB=m
+CONFIG_I2C_SLAVE=y
+CONFIG_SPI=y
+CONFIG_SPI_GPIO=y
+CONFIG_SPI_OMAP24XX=y
+CONFIG_SPI_SPIDEV=m
+CONFIG_SPI_SLAVE=y
+CONFIG_SPI_SLAVE_TIME=m
+CONFIG_SPI_SLAVE_SYSTEM_CONTROL=m
+CONFIG_PPS_CLIENT_LDISC=m
+CONFIG_PPS_CLIENT_GPIO=m
+CONFIG_PINCTRL_SINGLE=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_OF_HELPER=y
+CONFIG_GPIO_GENERIC_PLATFORM=y
+CONFIG_GPIO_SYSCON=y
+CONFIG_GPIO_ADP5588=m
+CONFIG_GPIO_ADNP=m
+CONFIG_GPIO_MAX7300=m
+CONFIG_GPIO_MAX732X=m
+CONFIG_GPIO_PCA953X=y
+CONFIG_GPIO_PCA953X_IRQ=y
+CONFIG_GPIO_PCF857X=m
+CONFIG_GPIO_TPIC2810=m
+CONFIG_GPIO_74X164=m
+CONFIG_GPIO_MAX3191X=m
+CONFIG_GPIO_MAX7301=m
+CONFIG_GPIO_MC33880=m
+CONFIG_GPIO_PISOSR=m
+CONFIG_GPIO_XRA1403=m
+CONFIG_GPIO_AGGREGATOR=m
+CONFIG_W1=y
+CONFIG_W1_MASTER_DS2490=m
+CONFIG_W1_MASTER_DS2482=m
+CONFIG_W1_MASTER_GPIO=m
+CONFIG_HDQ_MASTER_OMAP=m
+CONFIG_W1_SLAVE_THERM=m
+CONFIG_W1_SLAVE_SMEM=m
+CONFIG_W1_SLAVE_DS2405=m
+CONFIG_W1_SLAVE_DS2408=m
+CONFIG_W1_SLAVE_DS2413=m
+CONFIG_W1_SLAVE_DS2406=m
+CONFIG_W1_SLAVE_DS2423=m
+CONFIG_W1_SLAVE_DS2805=m
+CONFIG_W1_SLAVE_DS2430=m
+CONFIG_W1_SLAVE_DS2431=m
+CONFIG_W1_SLAVE_DS2433=m
+CONFIG_W1_SLAVE_DS2433_CRC=y
+CONFIG_W1_SLAVE_DS2438=m
+CONFIG_W1_SLAVE_DS250X=m
+CONFIG_W1_SLAVE_DS2780=m
+CONFIG_W1_SLAVE_DS2781=m
+CONFIG_W1_SLAVE_DS28E04=m
+CONFIG_W1_SLAVE_DS28E17=m
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_GPIO=y
+CONFIG_POWER_RESET_GPIO_RESTART=y
+CONFIG_POWER_RESET_RESTART=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_POWER_RESET_SYSCON_POWEROFF=y
+CONFIG_GENERIC_ADC_BATTERY=m
+CONFIG_BATTERY_DS2760=m
+CONFIG_CHARGER_GPIO=m
+CONFIG_SENSORS_AD7314=m
+CONFIG_SENSORS_AD7414=m
+CONFIG_SENSORS_AD7418=m
+CONFIG_SENSORS_ADM1021=m
+CONFIG_SENSORS_ADM1025=m
+CONFIG_SENSORS_ADM1026=m
+CONFIG_SENSORS_ADM1029=m
+CONFIG_SENSORS_ADM1031=m
+CONFIG_SENSORS_ADM1177=m
+CONFIG_SENSORS_ADM9240=m
+CONFIG_SENSORS_ADT7310=m
+CONFIG_SENSORS_ADT7410=m
+CONFIG_SENSORS_ADT7411=m
+CONFIG_SENSORS_ADT7462=m
+CONFIG_SENSORS_ADT7470=m
+CONFIG_SENSORS_ADT7475=m
+CONFIG_SENSORS_AS370=m
+CONFIG_SENSORS_ASC7621=m
+CONFIG_SENSORS_ASPEED=m
+CONFIG_SENSORS_ATXP1=m
+CONFIG_SENSORS_DRIVETEMP=m
+CONFIG_SENSORS_DS620=m
+CONFIG_SENSORS_DS1621=m
+CONFIG_SENSORS_F71805F=m
+CONFIG_SENSORS_F71882FG=m
+CONFIG_SENSORS_F75375S=m
+CONFIG_SENSORS_FTSTEUTATES=m
+CONFIG_SENSORS_GL518SM=m
+CONFIG_SENSORS_GL520SM=m
+CONFIG_SENSORS_G760A=m
+CONFIG_SENSORS_G762=m
+CONFIG_SENSORS_GPIO_FAN=y
+CONFIG_SENSORS_HIH6130=m
+CONFIG_SENSORS_IIO_HWMON=m
+CONFIG_SENSORS_IT87=m
+CONFIG_SENSORS_JC42=m
+CONFIG_SENSORS_POWR1220=m
+CONFIG_SENSORS_LINEAGE=m
+CONFIG_SENSORS_LTC2945=m
+CONFIG_SENSORS_LTC2990=m
+CONFIG_SENSORS_LTC4151=m
+CONFIG_SENSORS_LTC4215=m
+CONFIG_SENSORS_LTC4222=m
+CONFIG_SENSORS_LTC4245=m
+CONFIG_SENSORS_LTC4260=m
+CONFIG_SENSORS_LTC4261=m
+CONFIG_SENSORS_MAX1111=m
+CONFIG_SENSORS_MAX16065=m
+CONFIG_SENSORS_MAX1619=m
+CONFIG_SENSORS_MAX1668=m
+CONFIG_SENSORS_MAX197=m
+CONFIG_SENSORS_MAX31722=m
+CONFIG_SENSORS_MAX31730=m
+CONFIG_SENSORS_MAX6621=m
+CONFIG_SENSORS_MAX6639=m
+CONFIG_SENSORS_MAX6642=m
+CONFIG_SENSORS_MAX6650=m
+CONFIG_SENSORS_MAX6697=m
+CONFIG_SENSORS_MAX31790=m
+CONFIG_SENSORS_MCP3021=m
+CONFIG_SENSORS_TC654=m
+CONFIG_SENSORS_MR75203=m
+CONFIG_SENSORS_ADCXX=m
+CONFIG_SENSORS_LM63=m
+CONFIG_SENSORS_LM70=m
+CONFIG_SENSORS_LM73=m
+CONFIG_SENSORS_LM75=m
+CONFIG_SENSORS_LM77=m
+CONFIG_SENSORS_LM78=m
+CONFIG_SENSORS_LM80=m
+CONFIG_SENSORS_LM83=m
+CONFIG_SENSORS_LM85=m
+CONFIG_SENSORS_LM87=m
+CONFIG_SENSORS_LM90=m
+CONFIG_SENSORS_LM92=m
+CONFIG_SENSORS_LM93=m
+CONFIG_SENSORS_LM95234=m
+CONFIG_SENSORS_LM95241=m
+CONFIG_SENSORS_LM95245=m
+CONFIG_SENSORS_PC87360=m
+CONFIG_SENSORS_PC87427=m
+CONFIG_SENSORS_NTC_THERMISTOR=m
+CONFIG_SENSORS_NCT6683=m
+CONFIG_SENSORS_NCT6775=m
+CONFIG_SENSORS_NCT7802=m
+CONFIG_SENSORS_NCT7904=m
+CONFIG_SENSORS_NPCM7XX=m
+CONFIG_SENSORS_PCF8591=m
+CONFIG_PMBUS=m
+CONFIG_SENSORS_ADM1266=m
+CONFIG_SENSORS_ADM1275=m
+CONFIG_SENSORS_IBM_CFFPS=m
+CONFIG_SENSORS_DPS920AB=m
+CONFIG_SENSORS_INSPUR_IPSPS=m
+CONFIG_SENSORS_IR35221=m
+CONFIG_SENSORS_IR38064=m
+CONFIG_SENSORS_IRPS5401=m
+CONFIG_SENSORS_ISL68137=m
+CONFIG_SENSORS_LM25066=m
+CONFIG_SENSORS_LTC2978=m
+CONFIG_SENSORS_LTC2978_REGULATOR=y
+CONFIG_SENSORS_LTC3815=m
+CONFIG_SENSORS_MAX16064=m
+CONFIG_SENSORS_MAX20730=m
+CONFIG_SENSORS_MAX20751=m
+CONFIG_SENSORS_MAX31785=m
+CONFIG_SENSORS_MAX34440=m
+CONFIG_SENSORS_MAX8688=m
+CONFIG_SENSORS_MP2888=m
+CONFIG_SENSORS_MP2975=m
+CONFIG_SENSORS_PIM4328=m
+CONFIG_SENSORS_PM6764TR=m
+CONFIG_SENSORS_PXE1610=m
+CONFIG_SENSORS_Q54SJ108A2=m
+CONFIG_SENSORS_STPDDC60=m
+CONFIG_SENSORS_TPS40422=m
+CONFIG_SENSORS_TPS53679=m
+CONFIG_SENSORS_UCD9000=m
+CONFIG_SENSORS_UCD9200=m
+CONFIG_SENSORS_XDPE122=m
+CONFIG_SENSORS_ZL6100=m
+CONFIG_SENSORS_PWM_FAN=m
+CONFIG_SENSORS_SHT15=m
+CONFIG_SENSORS_SHT21=m
+CONFIG_SENSORS_SHT3x=m
+CONFIG_SENSORS_SHT4x=m
+CONFIG_SENSORS_SHTC1=m
+CONFIG_SENSORS_DME1737=m
+CONFIG_SENSORS_EMC1403=m
+CONFIG_SENSORS_EMC2103=m
+CONFIG_SENSORS_EMC6W201=m
+CONFIG_SENSORS_SMSC47M1=m
+CONFIG_SENSORS_SMSC47M192=m
+CONFIG_SENSORS_SMSC47B397=m
+CONFIG_SENSORS_SCH5627=m
+CONFIG_SENSORS_SCH5636=m
+CONFIG_SENSORS_STTS751=m
+CONFIG_SENSORS_SMM665=m
+CONFIG_SENSORS_ADC128D818=m
+CONFIG_SENSORS_ADS7828=m
+CONFIG_SENSORS_ADS7871=m
+CONFIG_SENSORS_AMC6821=m
+CONFIG_SENSORS_INA209=m
+CONFIG_SENSORS_INA2XX=m
+CONFIG_SENSORS_INA3221=m
+CONFIG_SENSORS_TC74=m
+CONFIG_SENSORS_THMC50=m
+CONFIG_SENSORS_TMP102=m
+CONFIG_SENSORS_TMP103=m
+CONFIG_SENSORS_TMP108=m
+CONFIG_SENSORS_TMP401=m
+CONFIG_SENSORS_TMP421=m
+CONFIG_SENSORS_VT1211=m
+CONFIG_SENSORS_W83773G=m
+CONFIG_SENSORS_W83781D=m
+CONFIG_SENSORS_W83791D=m
+CONFIG_SENSORS_W83792D=m
+CONFIG_SENSORS_W83793=m
+CONFIG_SENSORS_W83795=m
+CONFIG_SENSORS_W83L785TS=m
+CONFIG_SENSORS_W83L786NG=m
+CONFIG_SENSORS_W83627HF=m
+CONFIG_SENSORS_W83627EHF=m
+CONFIG_THERMAL_STATISTICS=y
+CONFIG_THERMAL_GOV_FAIR_SHARE=y
+CONFIG_THERMAL_GOV_BANG_BANG=y
+CONFIG_CPU_THERMAL=y
+CONFIG_DEVFREQ_THERMAL=y
+CONFIG_TI_THERMAL=y
+CONFIG_GENERIC_ADC_THERMAL=m
+CONFIG_WATCHDOG=y
+CONFIG_WATCHDOG_SYSFS=y
+CONFIG_WATCHDOG_PRETIMEOUT_GOV=y
+CONFIG_WATCHDOG_PRETIMEOUT_GOV_NOOP=m
+CONFIG_WATCHDOG_PRETIMEOUT_GOV_PANIC=m
+CONFIG_WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP=y
+CONFIG_SOFT_WATCHDOG=y
+CONFIG_OMAP_WATCHDOG=y
+CONFIG_MFD_TI_AM335X_TSCADC=y
+CONFIG_MFD_TPS65217=y
+CONFIG_REGULATOR_USERSPACE_CONSUMER=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_REGULATOR_PBIAS=y
+CONFIG_REGULATOR_PWM=y
+CONFIG_REGULATOR_TI_ABB=y
+CONFIG_REGULATOR_TPS65217=y
+CONFIG_RC_CORE=m
+CONFIG_LIRC=y
+CONFIG_RC_DECODERS=y
+CONFIG_IR_NEC_DECODER=m
+CONFIG_IR_RC5_DECODER=m
+CONFIG_IR_RC6_DECODER=m
+CONFIG_IR_JVC_DECODER=m
+CONFIG_IR_SONY_DECODER=m
+CONFIG_IR_SANYO_DECODER=m
+CONFIG_IR_SHARP_DECODER=m
+CONFIG_IR_MCE_KBD_DECODER=m
+CONFIG_IR_XMP_DECODER=m
+CONFIG_IR_IMON_DECODER=m
+CONFIG_RC_DEVICES=y
+CONFIG_RC_ATI_REMOTE=m
+CONFIG_IR_IMON=m
+CONFIG_IR_IMON_RAW=m
+CONFIG_IR_MCEUSB=m
+CONFIG_IR_REDRAT3=m
+CONFIG_IR_STREAMZAP=m
+CONFIG_IR_IGORPLUGUSB=m
+CONFIG_IR_IGUANA=m
+CONFIG_IR_TTUSBIR=m
+CONFIG_RC_LOOPBACK=m
+CONFIG_IR_GPIO_CIR=m
+CONFIG_USB_PULSE8_CEC=m
+CONFIG_USB_RAINSHADOW_CEC=m
+CONFIG_MEDIA_SUPPORT=m
+CONFIG_MEDIA_SUBDRV_AUTOSELECT=y
+CONFIG_MEDIA_USB_SUPPORT=y
+CONFIG_USB_VIDEO_CLASS=m
+CONFIG_USB_GSPCA=m
+CONFIG_USB_M5602=m
+CONFIG_USB_STV06XX=m
+CONFIG_USB_GL860=m
+CONFIG_USB_GSPCA_BENQ=m
+CONFIG_USB_GSPCA_CONEX=m
+CONFIG_USB_GSPCA_CPIA1=m
+CONFIG_USB_GSPCA_DTCS033=m
+CONFIG_USB_GSPCA_ETOMS=m
+CONFIG_USB_GSPCA_FINEPIX=m
+CONFIG_USB_GSPCA_JEILINJ=m
+CONFIG_USB_GSPCA_JL2005BCD=m
+CONFIG_USB_GSPCA_KINECT=m
+CONFIG_USB_GSPCA_KONICA=m
+CONFIG_USB_GSPCA_MARS=m
+CONFIG_USB_GSPCA_MR97310A=m
+CONFIG_USB_GSPCA_NW80X=m
+CONFIG_USB_GSPCA_OV519=m
+CONFIG_USB_GSPCA_OV534=m
+CONFIG_USB_GSPCA_OV534_9=m
+CONFIG_USB_GSPCA_PAC207=m
+CONFIG_USB_GSPCA_PAC7302=m
+CONFIG_USB_GSPCA_PAC7311=m
+CONFIG_USB_GSPCA_SE401=m
+CONFIG_USB_GSPCA_SN9C2028=m
+CONFIG_USB_GSPCA_SN9C20X=m
+CONFIG_USB_GSPCA_SONIXB=m
+CONFIG_USB_GSPCA_SONIXJ=m
+CONFIG_USB_GSPCA_SPCA500=m
+CONFIG_USB_GSPCA_SPCA501=m
+CONFIG_USB_GSPCA_SPCA505=m
+CONFIG_USB_GSPCA_SPCA506=m
+CONFIG_USB_GSPCA_SPCA508=m
+CONFIG_USB_GSPCA_SPCA561=m
+CONFIG_USB_GSPCA_SPCA1528=m
+CONFIG_USB_GSPCA_SQ905=m
+CONFIG_USB_GSPCA_SQ905C=m
+CONFIG_USB_GSPCA_SQ930X=m
+CONFIG_USB_GSPCA_STK014=m
+CONFIG_USB_GSPCA_STK1135=m
+CONFIG_USB_GSPCA_STV0680=m
+CONFIG_USB_GSPCA_SUNPLUS=m
+CONFIG_USB_GSPCA_T613=m
+CONFIG_USB_GSPCA_TOPRO=m
+CONFIG_USB_GSPCA_TOUPTEK=m
+CONFIG_USB_GSPCA_TV8532=m
+CONFIG_USB_GSPCA_VC032X=m
+CONFIG_USB_GSPCA_VICAM=m
+CONFIG_USB_GSPCA_XIRLINK_CIT=m
+CONFIG_USB_GSPCA_ZC3XX=m
+CONFIG_USB_PWC=m
+CONFIG_VIDEO_CPIA2=m
+CONFIG_USB_ZR364XX=m
+CONFIG_USB_STKWEBCAM=m
+CONFIG_USB_S2255=m
+CONFIG_VIDEO_USBTV=m
+CONFIG_VIDEO_PVRUSB2=m
+CONFIG_VIDEO_HDPVR=m
+CONFIG_VIDEO_STK1160_COMMON=m
+CONFIG_VIDEO_GO7007=m
+CONFIG_VIDEO_GO7007_USB=m
+CONFIG_VIDEO_GO7007_USB_S2250_BOARD=m
+CONFIG_VIDEO_AU0828=m
+CONFIG_VIDEO_AU0828_RC=y
+CONFIG_VIDEO_CX231XX=m
+CONFIG_VIDEO_CX231XX_ALSA=m
+CONFIG_VIDEO_CX231XX_DVB=m
+CONFIG_DVB_USB=m
+CONFIG_DVB_USB_A800=m
+CONFIG_DVB_USB_DIBUSB_MB=m
+CONFIG_DVB_USB_DIBUSB_MB_FAULTY=y
+CONFIG_DVB_USB_DIBUSB_MC=m
+CONFIG_DVB_USB_DIB0700=m
+CONFIG_DVB_USB_UMT_010=m
+CONFIG_DVB_USB_CXUSB=m
+CONFIG_DVB_USB_M920X=m
+CONFIG_DVB_USB_DIGITV=m
+CONFIG_DVB_USB_VP7045=m
+CONFIG_DVB_USB_VP702X=m
+CONFIG_DVB_USB_GP8PSK=m
+CONFIG_DVB_USB_NOVA_T_USB2=m
+CONFIG_DVB_USB_TTUSB2=m
+CONFIG_DVB_USB_DTT200U=m
+CONFIG_DVB_USB_OPERA1=m
+CONFIG_DVB_USB_AF9005=m
+CONFIG_DVB_USB_AF9005_REMOTE=m
+CONFIG_DVB_USB_PCTV452E=m
+CONFIG_DVB_USB_DW2102=m
+CONFIG_DVB_USB_CINERGY_T2=m
+CONFIG_DVB_USB_DTV5100=m
+CONFIG_DVB_USB_AZ6027=m
+CONFIG_DVB_USB_TECHNISAT_USB2=m
+CONFIG_DVB_USB_V2=m
+CONFIG_DVB_USB_AF9015=m
+CONFIG_DVB_USB_AF9035=m
+CONFIG_DVB_USB_ANYSEE=m
+CONFIG_DVB_USB_AU6610=m
+CONFIG_DVB_USB_AZ6007=m
+CONFIG_DVB_USB_CE6230=m
+CONFIG_DVB_USB_EC168=m
+CONFIG_DVB_USB_GL861=m
+CONFIG_DVB_USB_LME2510=m
+CONFIG_DVB_USB_MXL111SF=m
+CONFIG_DVB_USB_RTL28XXU=m
+CONFIG_DVB_USB_DVBSKY=m
+CONFIG_DVB_USB_ZD1301=m
+CONFIG_SMS_USB_DRV=m
+CONFIG_DVB_B2C2_FLEXCOP_USB=m
+CONFIG_DVB_AS102=m
+CONFIG_VIDEO_EM28XX=m
+CONFIG_VIDEO_EM28XX_V4L2=m
+CONFIG_VIDEO_EM28XX_ALSA=m
+CONFIG_VIDEO_EM28XX_DVB=m
+CONFIG_USB_AIRSPY=m
+CONFIG_USB_HACKRF=m
+CONFIG_USB_MSI2500=m
+CONFIG_RADIO_SI470X=m
+CONFIG_USB_SI470X=m
+CONFIG_RADIO_SI4713=m
+CONFIG_I2C_SI4713=m
+CONFIG_USB_MR800=m
+CONFIG_RADIO_SHARK=m
+CONFIG_RADIO_SHARK2=m
+CONFIG_USB_KEENE=m
+CONFIG_USB_RAREMONO=m
+CONFIG_USB_MA901=m
+CONFIG_RADIO_WL128X=m
+CONFIG_V4L_PLATFORM_DRIVERS=y
+CONFIG_V4L_MEM2MEM_DRIVERS=y
+CONFIG_SMS_SDIO_DRV=m
+CONFIG_VIDEO_TVAUDIO=m
+CONFIG_VIDEO_TDA7432=m
+CONFIG_VIDEO_TDA9840=m
+CONFIG_VIDEO_TEA6415C=m
+CONFIG_VIDEO_TEA6420=m
+CONFIG_VIDEO_CS3308=m
+CONFIG_VIDEO_CS5345=m
+CONFIG_VIDEO_TLV320AIC23B=m
+CONFIG_VIDEO_WM8739=m
+CONFIG_VIDEO_VP27SMPX=m
+CONFIG_VIDEO_SAA6588=m
+CONFIG_VIDEO_BT819=m
+CONFIG_VIDEO_BT856=m
+CONFIG_VIDEO_KS0127=m
+CONFIG_VIDEO_SAA7110=m
+CONFIG_VIDEO_VPX3220=m
+CONFIG_VIDEO_SAA717X=m
+CONFIG_VIDEO_SAA7127=m
+CONFIG_VIDEO_SAA7185=m
+CONFIG_VIDEO_ADV7170=m
+CONFIG_VIDEO_ADV7175=m
+CONFIG_VIDEO_UPD64031A=m
+CONFIG_VIDEO_UPD64083=m
+CONFIG_VIDEO_SAA6752HS=m
+CONFIG_VIDEO_M52790=m
+CONFIG_VIDEO_OV7670=m
+CONFIG_VIDEO_SR030PC30=m
+CONFIG_VIDEO_NOON010PC30=m
+CONFIG_MEDIA_TUNER_MT2131=m
+CONFIG_MEDIA_TUNER_M88RS6000T=m
+CONFIG_MEDIA_TUNER_MXL301RF=m
+CONFIG_MEDIA_TUNER_QM1D1B0004=m
+CONFIG_DVB_STV0910=m
+CONFIG_DVB_STV6111=m
+CONFIG_DVB_MXL5XX=m
+CONFIG_DVB_CX24110=m
+CONFIG_DVB_ZL10036=m
+CONFIG_DVB_TDA8083=m
+CONFIG_DVB_TDA8261=m
+CONFIG_DVB_VES1X93=m
+CONFIG_DVB_TUA6100=m
+CONFIG_DVB_CX24117=m
+CONFIG_DVB_MB86A16=m
+CONFIG_DVB_SP887X=m
+CONFIG_DVB_CX22700=m
+CONFIG_DVB_L64781=m
+CONFIG_DVB_STV0367=m
+CONFIG_DVB_VES1820=m
+CONFIG_DVB_TDA10021=m
+CONFIG_DVB_OR51211=m
+CONFIG_DVB_OR51132=m
+CONFIG_DVB_LNBH25=m
+CONFIG_DVB_ISL6405=m
+CONFIG_DVB_TDA665x=m
+CONFIG_DVB_HORUS3A=m
+CONFIG_DVB_ASCOT2E=m
+CONFIG_DVB_HELENE=m
+CONFIG_DVB_CXD2099=m
+CONFIG_DVB_DUMMY_FE=m
+CONFIG_DRM=y
+CONFIG_DRM_DP_AUX_CHARDEV=y
+CONFIG_DRM_LOAD_EDID_FIRMWARE=y
+CONFIG_DRM_I2C_NXP_TDA998X=y
+CONFIG_DRM_VGEM=m
+CONFIG_DRM_UDL=m
+CONFIG_DRM_TILCDC=y
+CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_SII902X=y
+CONFIG_DRM_TI_TFP410=y
+CONFIG_DRM_I2C_ADV7511=y
+CONFIG_DRM_I2C_ADV7511_AUDIO=y
+CONFIG_DRM_GM12U320=m
+CONFIG_DRM_SIMPLEDRM=y
+CONFIG_TINYDRM_HX8357D=m
+CONFIG_TINYDRM_ILI9225=m
+CONFIG_TINYDRM_ILI9341=m
+CONFIG_TINYDRM_ILI9486=m
+CONFIG_TINYDRM_MI0283QT=m
+CONFIG_TINYDRM_REPAPER=m
+CONFIG_TINYDRM_ST7586=m
+CONFIG_TINYDRM_ST7735R=m
+CONFIG_FB=y
+CONFIG_FIRMWARE_EDID=y
+CONFIG_FB_TILEBLITTING=y
+CONFIG_FB_SMSCUFX=m
+CONFIG_FB_UDL=m
+CONFIG_FB_SSD1307=y
+CONFIG_BACKLIGHT_PWM=y
+CONFIG_BACKLIGHT_GPIO=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION=y
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_LOGO=y
+CONFIG_SOUND=y
+# CONFIG_SOUND_OSS_CORE_PRECLAIM is not set
+CONFIG_SND=y
+CONFIG_SND_OSSEMUL=y
+CONFIG_SND_MIXER_OSS=m
+CONFIG_SND_PCM_OSS=m
+CONFIG_SND_HRTIMER=m
+CONFIG_SND_DYNAMIC_MINORS=y
+CONFIG_SND_SEQUENCER=m
+CONFIG_SND_SEQ_DUMMY=m
+CONFIG_SND_DUMMY=m
+CONFIG_SND_ALOOP=m
+CONFIG_SND_VIRMIDI=m
+CONFIG_SND_MTPAV=m
+CONFIG_SND_SERIAL_U16550=m
+CONFIG_SND_MPU401=m
+CONFIG_SND_HDA_PREALLOC_SIZE=2048
+CONFIG_SND_USB_AUDIO=m
+CONFIG_SND_USB_UA101=m
+CONFIG_SND_USB_CAIAQ=m
+CONFIG_SND_USB_CAIAQ_INPUT=y
+CONFIG_SND_USB_6FIRE=m
+CONFIG_SND_USB_HIFACE=m
+CONFIG_SND_BCD2000=m
+CONFIG_SND_USB_POD=m
+CONFIG_SND_USB_PODHD=m
+CONFIG_SND_USB_TONEPORT=m
+CONFIG_SND_USB_VARIAX=m
+CONFIG_SND_SOC=y
+CONFIG_SND_SOC_DAVINCI_MCASP=m
+CONFIG_SND_SOC_OMAP_MCBSP=m
+CONFIG_SND_SOC_ADAU1701=m
+CONFIG_SND_SOC_ADAU7002=m
+CONFIG_SND_SOC_AK4554=m
+CONFIG_SND_SOC_CS42L51_I2C=m
+CONFIG_SND_SOC_CS4265=m
+CONFIG_SND_SOC_CS4271_I2C=m
+CONFIG_SND_SOC_DMIC=m
+CONFIG_SND_SOC_ES8328_I2C=m
+CONFIG_SND_SOC_ES8328_SPI=m
+CONFIG_SND_SOC_PCM5102A=m
+CONFIG_SND_SOC_PCM512x_I2C=m
+CONFIG_SND_SOC_SGTL5000=m
+CONFIG_SND_SOC_SPDIF=m
+CONFIG_SND_SOC_TLV320AIC23_I2C=m
+CONFIG_SND_SOC_TS3A227E=m
+CONFIG_SND_SOC_WM8753=m
+CONFIG_SND_SOC_WM8804_I2C=m
+CONFIG_SND_SOC_WM8903=m
+CONFIG_SND_SOC_TPA6130A2=m
+CONFIG_SND_SIMPLE_CARD=y
+CONFIG_SND_AUDIO_GRAPH_CARD=m
+CONFIG_HID_BATTERY_STRENGTH=y
+CONFIG_HIDRAW=y
+CONFIG_UHID=m
+CONFIG_HID_GENERIC=m
+CONFIG_HID_A4TECH=m
+CONFIG_HID_ACCUTOUCH=m
+CONFIG_HID_ACRUX=m
+CONFIG_HID_ACRUX_FF=y
+CONFIG_HID_APPLE=m
+CONFIG_HID_ASUS=m
+CONFIG_HID_AUREAL=m
+CONFIG_HID_BELKIN=m
+CONFIG_HID_BETOP_FF=m
+CONFIG_HID_BIGBEN_FF=m
+CONFIG_HID_CHERRY=m
+CONFIG_HID_CHICONY=m
+CONFIG_HID_CORSAIR=m
+CONFIG_HID_COUGAR=m
+CONFIG_HID_MACALLY=m
+CONFIG_HID_PRODIKEYS=m
+CONFIG_HID_CMEDIA=m
+CONFIG_HID_CP2112=m
+CONFIG_HID_CREATIVE_SB0540=m
+CONFIG_HID_CYPRESS=m
+CONFIG_HID_DRAGONRISE=m
+CONFIG_DRAGONRISE_FF=y
+CONFIG_HID_EMS_FF=m
+CONFIG_HID_ELAN=m
+CONFIG_HID_ELECOM=m
+CONFIG_HID_ELO=m
+CONFIG_HID_EZKEY=m
+CONFIG_HID_FT260=m
+CONFIG_HID_GEMBIRD=m
+CONFIG_HID_GFRM=m
+CONFIG_HID_GLORIOUS=m
+CONFIG_HID_HOLTEK=m
+CONFIG_HOLTEK_FF=y
+CONFIG_HID_VIVALDI=m
+CONFIG_HID_GT683R=m
+CONFIG_HID_KEYTOUCH=m
+CONFIG_HID_KYE=m
+CONFIG_HID_UCLOGIC=m
+CONFIG_HID_WALTOP=m
+CONFIG_HID_VIEWSONIC=m
+CONFIG_HID_GYRATION=m
+CONFIG_HID_ICADE=m
+CONFIG_HID_ITE=m
+CONFIG_HID_JABRA=m
+CONFIG_HID_TWINHAN=m
+CONFIG_HID_KENSINGTON=m
+CONFIG_HID_LCPOWER=m
+CONFIG_HID_LENOVO=m
+CONFIG_HID_LOGITECH=y
+CONFIG_HID_LOGITECH_DJ=y
+CONFIG_LOGITECH_FF=y
+CONFIG_LOGIRUMBLEPAD2_FF=y
+CONFIG_LOGIG940_FF=y
+CONFIG_HID_MAGICMOUSE=m
+CONFIG_HID_MALTRON=m
+CONFIG_HID_MAYFLASH=m
+CONFIG_HID_REDRAGON=m
+CONFIG_HID_MICROSOFT=m
+CONFIG_HID_MONTEREY=m
+CONFIG_HID_MULTITOUCH=m
+CONFIG_HID_NTI=m
+CONFIG_HID_NTRIG=m
+CONFIG_HID_ORTEK=m
+CONFIG_HID_PANTHERLORD=m
+CONFIG_PANTHERLORD_FF=y
+CONFIG_HID_PENMOUNT=m
+CONFIG_HID_PETALYNX=m
+CONFIG_HID_PICOLCD=m
+CONFIG_HID_PICOLCD_FB=y
+CONFIG_HID_PICOLCD_BACKLIGHT=y
+CONFIG_HID_PICOLCD_LEDS=y
+CONFIG_HID_PICOLCD_CIR=y
+CONFIG_HID_PLANTRONICS=m
+CONFIG_HID_PLAYSTATION=m
+CONFIG_PLAYSTATION_FF=y
+CONFIG_HID_PRIMAX=m
+CONFIG_HID_RETRODE=m
+CONFIG_HID_ROCCAT=m
+CONFIG_HID_SAITEK=m
+CONFIG_HID_SAMSUNG=m
+CONFIG_HID_SEMITEK=m
+CONFIG_HID_SONY=m
+CONFIG_SONY_FF=y
+CONFIG_HID_SPEEDLINK=m
+CONFIG_HID_STEAM=m
+CONFIG_HID_STEELSERIES=m
+CONFIG_HID_SUNPLUS=m
+CONFIG_HID_RMI=m
+CONFIG_HID_GREENASIA=m
+CONFIG_GREENASIA_FF=y
+CONFIG_HID_SMARTJOYPLUS=m
+CONFIG_SMARTJOYPLUS_FF=y
+CONFIG_HID_TIVO=m
+CONFIG_HID_TOPSEED=m
+CONFIG_HID_THINGM=m
+CONFIG_HID_THRUSTMASTER=m
+CONFIG_THRUSTMASTER_FF=y
+CONFIG_HID_UDRAW_PS3=m
+CONFIG_HID_U2FZERO=m
+CONFIG_HID_WACOM=m
+CONFIG_HID_WIIMOTE=m
+CONFIG_HID_XINMO=m
+CONFIG_HID_ZEROPLUS=m
+CONFIG_ZEROPLUS_FF=y
+CONFIG_HID_ZYDACRON=m
+CONFIG_HID_SENSOR_HUB=m
+CONFIG_HID_SENSOR_CUSTOM_SENSOR=m
+CONFIG_HID_ALPS=m
+CONFIG_HID_MCP2221=m
+CONFIG_HID_PID=y
+CONFIG_USB_HIDDEV=y
+CONFIG_USB_LED_TRIG=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_DYNAMIC_MINORS=y
+CONFIG_USB_OTG=y
+CONFIG_USB_LEDS_TRIGGER_USBPORT=m
+CONFIG_USB_MON=m
+CONFIG_USB_PRINTER=m
+CONFIG_USB_TMC=m
+CONFIG_USB_STORAGE=y
+CONFIG_USB_STORAGE_REALTEK=y
+CONFIG_USB_STORAGE_DATAFAB=y
+CONFIG_USB_STORAGE_FREECOM=y
+CONFIG_USB_STORAGE_ISD200=y
+CONFIG_USB_STORAGE_USBAT=y
+CONFIG_USB_STORAGE_SDDR09=y
+CONFIG_USB_STORAGE_SDDR55=y
+CONFIG_USB_STORAGE_JUMPSHOT=y
+CONFIG_USB_STORAGE_ALAUDA=y
+CONFIG_USB_STORAGE_ONETOUCH=y
+CONFIG_USB_STORAGE_KARMA=y
+CONFIG_USB_STORAGE_CYPRESS_ATACB=y
+CONFIG_USB_STORAGE_ENE_UB6250=y
+CONFIG_USB_UAS=y
+CONFIG_USB_MDC800=m
+CONFIG_USB_MICROTEK=m
+CONFIG_USBIP_CORE=m
+CONFIG_USBIP_VHCI_HCD=m
+CONFIG_USBIP_VHCI_HC_PORTS=15
+CONFIG_USBIP_VHCI_NR_HCS=8
+CONFIG_USBIP_HOST=m
+CONFIG_USBIP_VUDC=m
+CONFIG_USB_MUSB_HDRC=y
+CONFIG_USB_MUSB_DSPS=y
+CONFIG_USB_TI_CPPI41_DMA=y
+CONFIG_USB_SERIAL=m
+CONFIG_USB_SERIAL_GENERIC=y
+CONFIG_USB_SERIAL_SIMPLE=m
+CONFIG_USB_SERIAL_AIRCABLE=m
+CONFIG_USB_SERIAL_ARK3116=m
+CONFIG_USB_SERIAL_BELKIN=m
+CONFIG_USB_SERIAL_CH341=m
+CONFIG_USB_SERIAL_WHITEHEAT=m
+CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
+CONFIG_USB_SERIAL_CP210X=m
+CONFIG_USB_SERIAL_CYPRESS_M8=m
+CONFIG_USB_SERIAL_EMPEG=m
+CONFIG_USB_SERIAL_FTDI_SIO=m
+CONFIG_USB_SERIAL_VISOR=m
+CONFIG_USB_SERIAL_IPAQ=m
+CONFIG_USB_SERIAL_IR=m
+CONFIG_USB_SERIAL_EDGEPORT=m
+CONFIG_USB_SERIAL_EDGEPORT_TI=m
+CONFIG_USB_SERIAL_F81232=m
+CONFIG_USB_SERIAL_F8153X=m
+CONFIG_USB_SERIAL_GARMIN=m
+CONFIG_USB_SERIAL_IPW=m
+CONFIG_USB_SERIAL_IUU=m
+CONFIG_USB_SERIAL_KEYSPAN_PDA=m
+CONFIG_USB_SERIAL_KEYSPAN=m
+CONFIG_USB_SERIAL_KLSI=m
+CONFIG_USB_SERIAL_KOBIL_SCT=m
+CONFIG_USB_SERIAL_MCT_U232=m
+CONFIG_USB_SERIAL_METRO=m
+CONFIG_USB_SERIAL_MOS7720=m
+CONFIG_USB_SERIAL_MOS7840=m
+CONFIG_USB_SERIAL_MXUPORT=m
+CONFIG_USB_SERIAL_NAVMAN=m
+CONFIG_USB_SERIAL_PL2303=m
+CONFIG_USB_SERIAL_OTI6858=m
+CONFIG_USB_SERIAL_QCAUX=m
+CONFIG_USB_SERIAL_QUALCOMM=m
+CONFIG_USB_SERIAL_SPCP8X5=m
+CONFIG_USB_SERIAL_SAFE=m
+CONFIG_USB_SERIAL_SIERRAWIRELESS=m
+CONFIG_USB_SERIAL_SYMBOL=m
+CONFIG_USB_SERIAL_TI=m
+CONFIG_USB_SERIAL_CYBERJACK=m
+CONFIG_USB_SERIAL_OPTION=m
+CONFIG_USB_SERIAL_OMNINET=m
+CONFIG_USB_SERIAL_OPTICON=m
+CONFIG_USB_SERIAL_XSENS_MT=m
+CONFIG_USB_SERIAL_WISHBONE=m
+CONFIG_USB_SERIAL_SSU100=m
+CONFIG_USB_SERIAL_QT2=m
+CONFIG_USB_SERIAL_UPD78F0730=m
+CONFIG_USB_SERIAL_DEBUG=m
+CONFIG_USB_EMI62=m
+CONFIG_USB_EMI26=m
+CONFIG_USB_ADUTUX=m
+CONFIG_USB_SEVSEG=m
+CONFIG_USB_LEGOTOWER=m
+CONFIG_USB_LCD=m
+CONFIG_USB_CYPRESS_CY7C63=m
+CONFIG_USB_CYTHERM=m
+CONFIG_USB_IDMOUSE=m
+CONFIG_USB_FTDI_ELAN=m
+CONFIG_USB_APPLEDISPLAY=m
+CONFIG_APPLE_MFI_FASTCHARGE=m
+CONFIG_USB_SISUSBVGA=m
+CONFIG_USB_LD=m
+CONFIG_USB_TRANCEVIBRATOR=m
+CONFIG_USB_IOWARRIOR=m
+CONFIG_USB_TEST=m
+CONFIG_USB_EHSET_TEST_FIXTURE=m
+CONFIG_USB_ISIGHTFW=m
+CONFIG_USB_YUREX=m
+CONFIG_USB_HSIC_USB3503=m
+CONFIG_USB_CHAOSKEY=m
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_AM335X_PHY_USB=y
+CONFIG_USB_GPIO_VBUS=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_VBUS_DRAW=500
+CONFIG_USB_DUMMY_HCD=m
+CONFIG_USB_CONFIGFS=y
+CONFIG_USB_CONFIGFS_SERIAL=y
+CONFIG_USB_CONFIGFS_ACM=y
+CONFIG_USB_CONFIGFS_OBEX=y
+CONFIG_USB_CONFIGFS_NCM=y
+CONFIG_USB_CONFIGFS_ECM=y
+CONFIG_USB_CONFIGFS_ECM_SUBSET=y
+CONFIG_USB_CONFIGFS_RNDIS=y
+CONFIG_USB_CONFIGFS_EEM=y
+CONFIG_USB_CONFIGFS_PHONET=y
+CONFIG_USB_CONFIGFS_MASS_STORAGE=y
+CONFIG_USB_CONFIGFS_F_LB_SS=y
+CONFIG_USB_CONFIGFS_F_FS=y
+CONFIG_USB_CONFIGFS_F_UAC1=y
+CONFIG_USB_CONFIGFS_F_UAC2=y
+CONFIG_USB_CONFIGFS_F_MIDI=y
+CONFIG_USB_CONFIGFS_F_HID=y
+CONFIG_USB_CONFIGFS_F_UVC=y
+CONFIG_USB_CONFIGFS_F_PRINTER=y
+CONFIG_USB_ZERO=m
+CONFIG_USB_AUDIO=m
+CONFIG_USB_ETH=m
+CONFIG_USB_G_NCM=m
+CONFIG_USB_GADGETFS=m
+CONFIG_USB_FUNCTIONFS=m
+CONFIG_USB_FUNCTIONFS_ETH=y
+CONFIG_USB_FUNCTIONFS_RNDIS=y
+CONFIG_USB_FUNCTIONFS_GENERIC=y
+CONFIG_USB_MASS_STORAGE=m
+CONFIG_USB_G_SERIAL=m
+CONFIG_USB_MIDI_GADGET=m
+CONFIG_USB_G_PRINTER=m
+CONFIG_USB_CDC_COMPOSITE=m
+CONFIG_USB_G_NOKIA=m
+CONFIG_USB_G_ACM_MS=m
+CONFIG_USB_G_MULTI=m
+CONFIG_USB_G_HID=m
+CONFIG_USB_G_DBGP=m
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK_MINORS=256
+CONFIG_SDIO_UART=m
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_OMAP_HS=y
+CONFIG_MMC_SPI=y
+CONFIG_MMC_VUB300=m
+CONFIG_MMC_USHC=m
+CONFIG_MMC_SDHCI_OMAP=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_BRIGHTNESS_HW_CHANGED=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_LP3944=m
+CONFIG_LEDS_LP55XX_COMMON=m
+CONFIG_LEDS_LP5523=m
+CONFIG_LEDS_PCA955X=m
+CONFIG_LEDS_DAC124S085=m
+CONFIG_LEDS_PWM=m
+CONFIG_LEDS_REGULATOR=m
+CONFIG_LEDS_BD2802=m
+CONFIG_LEDS_LT3593=m
+CONFIG_LEDS_TCA6507=m
+CONFIG_LEDS_TRIGGER_TIMER=y
+CONFIG_LEDS_TRIGGER_ONESHOT=y
+CONFIG_LEDS_TRIGGER_DISK=y
+CONFIG_LEDS_TRIGGER_MTD=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_BACKLIGHT=y
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_ACTIVITY=y
+CONFIG_LEDS_TRIGGER_GPIO=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+CONFIG_LEDS_TRIGGER_TRANSIENT=m
+CONFIG_LEDS_TRIGGER_CAMERA=m
+CONFIG_LEDS_TRIGGER_PANIC=y
+CONFIG_LEDS_TRIGGER_NETDEV=y
+CONFIG_ACCESSIBILITY=y
+CONFIG_A11Y_BRAILLE_CONSOLE=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_ABB5ZES3=y
+CONFIG_RTC_DRV_ABEOZ9=y
+CONFIG_RTC_DRV_ABX80X=y
+CONFIG_RTC_DRV_DS1307=y
+CONFIG_RTC_DRV_DS1374=y
+CONFIG_RTC_DRV_DS1374_WDT=y
+CONFIG_RTC_DRV_DS1672=y
+CONFIG_RTC_DRV_HYM8563=y
+CONFIG_RTC_DRV_MAX6900=y
+CONFIG_RTC_DRV_RS5C372=y
+CONFIG_RTC_DRV_ISL1208=y
+CONFIG_RTC_DRV_ISL12022=y
+CONFIG_RTC_DRV_ISL12026=y
+CONFIG_RTC_DRV_X1205=y
+CONFIG_RTC_DRV_PCF8523=y
+CONFIG_RTC_DRV_PCF85063=y
+CONFIG_RTC_DRV_PCF85363=y
+CONFIG_RTC_DRV_PCF8563=y
+CONFIG_RTC_DRV_PCF8583=y
+CONFIG_RTC_DRV_M41T80=y
+CONFIG_RTC_DRV_M41T80_WDT=y
+CONFIG_RTC_DRV_BQ32K=y
+CONFIG_RTC_DRV_S35390A=y
+CONFIG_RTC_DRV_FM3130=m
+CONFIG_RTC_DRV_RX8010=y
+CONFIG_RTC_DRV_RX8581=y
+CONFIG_RTC_DRV_RX8025=y
+CONFIG_RTC_DRV_EM3027=y
+CONFIG_RTC_DRV_RV8803=y
+CONFIG_RTC_DRV_M41T93=y
+CONFIG_RTC_DRV_M41T94=y
+CONFIG_RTC_DRV_DS1302=y
+CONFIG_RTC_DRV_DS1305=y
+CONFIG_RTC_DRV_DS1343=y
+CONFIG_RTC_DRV_DS1347=y
+CONFIG_RTC_DRV_DS1390=y
+CONFIG_RTC_DRV_MAX6916=y
+CONFIG_RTC_DRV_R9701=y
+CONFIG_RTC_DRV_RX4581=y
+CONFIG_RTC_DRV_RS5C348=y
+CONFIG_RTC_DRV_MAX6902=y
+CONFIG_RTC_DRV_PCF2123=y
+CONFIG_RTC_DRV_MCP795=y
+CONFIG_RTC_DRV_DS3232=y
+CONFIG_RTC_DRV_PCF2127=y
+CONFIG_RTC_DRV_RV3029C2=y
+CONFIG_RTC_DRV_RX6110=y
+CONFIG_RTC_DRV_DS1286=m
+CONFIG_RTC_DRV_DS1511=m
+CONFIG_RTC_DRV_DS1553=m
+CONFIG_RTC_DRV_DS1685_FAMILY=m
+CONFIG_RTC_DRV_DS1742=m
+CONFIG_RTC_DRV_DS2404=m
+CONFIG_RTC_DRV_EFI=y
+CONFIG_RTC_DRV_STK17TA8=m
+CONFIG_RTC_DRV_M48T86=m
+CONFIG_RTC_DRV_M48T35=m
+CONFIG_RTC_DRV_M48T59=m
+CONFIG_RTC_DRV_MSM6242=m
+CONFIG_RTC_DRV_BQ4802=m
+CONFIG_RTC_DRV_RP5C01=m
+CONFIG_RTC_DRV_V3020=m
+CONFIG_RTC_DRV_OMAP=y
+CONFIG_RTC_DRV_HID_SENSOR_TIME=m
+CONFIG_DMADEVICES=y
+CONFIG_ASYNC_TX_DMA=y
+CONFIG_AUXDISPLAY=y
+CONFIG_HD44780=m
+CONFIG_IMG_ASCII_LCD=m
+CONFIG_HT16K33=m
+CONFIG_UIO=m
+CONFIG_UIO_PDRV_GENIRQ=m
+CONFIG_UIO_PRUSS=m
+CONFIG_VIRT_DRIVERS=y
+CONFIG_VIRTIO_BALLOON=m
+CONFIG_VIRTIO_INPUT=m
+CONFIG_VIRTIO_MMIO=m
+CONFIG_GREYBUS=m
+CONFIG_GREYBUS_ES2=m
+CONFIG_GREYBUS_NETLINK=m
+CONFIG_STAGING=y
+CONFIG_RTLLIB=m
+CONFIG_RTL8723BS=m
+CONFIG_R8712U=m
+CONFIG_R8188EU=m
+CONFIG_88EU_AP_MODE=y
+CONFIG_ADIS16203=m
+CONFIG_ADIS16240=m
+CONFIG_AD7816=m
+CONFIG_AD7280=m
+CONFIG_ADT7316=m
+CONFIG_ADT7316_I2C=m
+CONFIG_AD7746=m
+CONFIG_AD9832=m
+CONFIG_AD9834=m
+CONFIG_AD5933=m
+CONFIG_ADE7854=m
+CONFIG_AD2S1210=m
+CONFIG_FB_TFT=m
+CONFIG_FB_TFT_AGM1264K_FL=m
+CONFIG_FB_TFT_BD663474=m
+CONFIG_FB_TFT_HX8340BN=m
+CONFIG_FB_TFT_HX8347D=m
+CONFIG_FB_TFT_HX8353D=m
+CONFIG_FB_TFT_HX8357D=m
+CONFIG_FB_TFT_ILI9163=m
+CONFIG_FB_TFT_ILI9320=m
+CONFIG_FB_TFT_ILI9325=m
+CONFIG_FB_TFT_ILI9340=m
+CONFIG_FB_TFT_ILI9341=m
+CONFIG_FB_TFT_ILI9481=m
+CONFIG_FB_TFT_ILI9486=m
+CONFIG_FB_TFT_PCD8544=m
+CONFIG_FB_TFT_RA8875=m
+CONFIG_FB_TFT_S6D02A1=m
+CONFIG_FB_TFT_S6D1121=m
+CONFIG_FB_TFT_SEPS525=m
+CONFIG_FB_TFT_SH1106=m
+CONFIG_FB_TFT_SSD1289=m
+CONFIG_FB_TFT_SSD1305=m
+CONFIG_FB_TFT_SSD1306=m
+CONFIG_FB_TFT_SSD1331=m
+CONFIG_FB_TFT_SSD1351=m
+CONFIG_FB_TFT_ST7735R=m
+CONFIG_FB_TFT_ST7789V=m
+CONFIG_FB_TFT_TINYLCD=m
+CONFIG_FB_TFT_TLS8204=m
+CONFIG_FB_TFT_UC1611=m
+CONFIG_FB_TFT_UC1701=m
+CONFIG_FB_TFT_UPD161704=m
+CONFIG_FB_TFT_WATTEROTT=m
+CONFIG_GREYBUS_AUDIO=m
+CONFIG_GREYBUS_BOOTROM=m
+CONFIG_GREYBUS_FIRMWARE=m
+CONFIG_GREYBUS_HID=m
+CONFIG_GREYBUS_LIGHT=m
+CONFIG_GREYBUS_LOG=m
+CONFIG_GREYBUS_LOOPBACK=m
+CONFIG_GREYBUS_POWER=m
+CONFIG_GREYBUS_RAW=m
+CONFIG_GREYBUS_VIBRATOR=m
+CONFIG_GREYBUS_BRIDGED_PHY=m
+CONFIG_GREYBUS_GPIO=m
+CONFIG_GREYBUS_I2C=m
+CONFIG_GREYBUS_PWM=m
+CONFIG_GREYBUS_SDIO=m
+CONFIG_GREYBUS_SPI=m
+CONFIG_GREYBUS_UART=m
+CONFIG_GREYBUS_USB=m
+CONFIG_WFX=m
+CONFIG_COMMON_CLK_TI_ADPLL=y
+CONFIG_HWSPINLOCK=y
+CONFIG_HWSPINLOCK_OMAP=y
+CONFIG_MAILBOX=y
+CONFIG_OMAP2PLUS_MBOX=y
+CONFIG_OMAP_IOMMU=y
+CONFIG_REMOTEPROC=y
+CONFIG_REMOTEPROC_CDEV=y
+CONFIG_WKUP_M3_RPROC=y
+CONFIG_PRU_REMOTEPROC=m
+CONFIG_RPMSG_CHAR=m
+CONFIG_RPMSG_VIRTIO=m
+CONFIG_SOC_TI=y
+CONFIG_AMX3_PM=y
+CONFIG_WKUP_M3_IPC=y
+CONFIG_TI_PRUSS=y
+CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
+CONFIG_DEVFREQ_GOV_PERFORMANCE=y
+CONFIG_DEVFREQ_GOV_POWERSAVE=y
+CONFIG_DEVFREQ_GOV_USERSPACE=y
+CONFIG_DEVFREQ_GOV_PASSIVE=y
+CONFIG_EXTCON_GPIO=y
+CONFIG_EXTCON_USB_GPIO=y
+CONFIG_TI_EMIF=y
+CONFIG_TI_EMIF_SRAM=y
+CONFIG_IIO=y
+CONFIG_IIO_SW_DEVICE=m
+CONFIG_IIO_SW_TRIGGER=m
+CONFIG_ADIS16201=m
+CONFIG_ADIS16209=m
+CONFIG_ADXL345_I2C=m
+CONFIG_ADXL345_SPI=m
+CONFIG_ADXL372_SPI=m
+CONFIG_ADXL372_I2C=m
+CONFIG_BMA180=m
+CONFIG_BMA220=m
+CONFIG_BMA400=m
+CONFIG_BMC150_ACCEL=m
+CONFIG_BMI088_ACCEL=m
+CONFIG_DA280=m
+CONFIG_DA311=m
+CONFIG_DMARD06=m
+CONFIG_DMARD09=m
+CONFIG_DMARD10=m
+CONFIG_FXLS8962AF_I2C=m
+CONFIG_FXLS8962AF_SPI=m
+CONFIG_HID_SENSOR_ACCEL_3D=m
+CONFIG_KXSD9=m
+CONFIG_KXCJK1013=m
+CONFIG_MC3230=m
+CONFIG_MMA7455_I2C=m
+CONFIG_MMA7455_SPI=m
+CONFIG_MMA7660=m
+CONFIG_MMA8452=m
+CONFIG_MMA9551=m
+CONFIG_MMA9553=m
+CONFIG_MXC4005=m
+CONFIG_MXC6255=m
+CONFIG_SCA3000=m
+CONFIG_SCA3300=m
+CONFIG_STK8312=m
+CONFIG_STK8BA50=m
+CONFIG_AD7091R5=m
+CONFIG_AD7124=m
+CONFIG_AD7192=m
+CONFIG_AD7266=m
+CONFIG_AD7291=m
+CONFIG_AD7292=m
+CONFIG_AD7298=m
+CONFIG_AD7476=m
+CONFIG_AD7606_IFACE_PARALLEL=m
+CONFIG_AD7606_IFACE_SPI=m
+CONFIG_AD7766=m
+CONFIG_AD7768_1=m
+CONFIG_AD7780=m
+CONFIG_AD7791=m
+CONFIG_AD7793=m
+CONFIG_AD7887=m
+CONFIG_AD7923=m
+CONFIG_AD7949=m
+CONFIG_AD799X=m
+CONFIG_AD9467=m
+CONFIG_ADI_AXI_ADC=m
+CONFIG_CC10001_ADC=m
+CONFIG_ENVELOPE_DETECTOR=m
+CONFIG_HI8435=m
+CONFIG_HX711=m
+CONFIG_INA2XX_ADC=m
+CONFIG_LTC2471=m
+CONFIG_LTC2485=m
+CONFIG_LTC2496=m
+CONFIG_LTC2497=m
+CONFIG_MAX1027=m
+CONFIG_MAX11100=m
+CONFIG_MAX1118=m
+CONFIG_MAX1241=m
+CONFIG_MAX1363=m
+CONFIG_MAX9611=m
+CONFIG_MCP320X=m
+CONFIG_MCP3422=m
+CONFIG_MCP3911=m
+CONFIG_NAU7802=m
+CONFIG_SD_ADC_MODULATOR=m
+CONFIG_TI_ADC081C=m
+CONFIG_TI_ADC0832=m
+CONFIG_TI_ADC084S021=m
+CONFIG_TI_ADC12138=m
+CONFIG_TI_ADC108S102=m
+CONFIG_TI_ADC128S052=m
+CONFIG_TI_ADC161S626=m
+CONFIG_TI_ADS1015=m
+CONFIG_TI_ADS7950=m
+CONFIG_TI_ADS8344=m
+CONFIG_TI_ADS8688=m
+CONFIG_TI_ADS124S08=m
+CONFIG_TI_ADS131E08=m
+CONFIG_TI_AM335X_ADC=y
+CONFIG_TI_TLC4541=m
+CONFIG_TI_TSC2046=m
+CONFIG_IIO_RESCALE=m
+CONFIG_AD8366=m
+CONFIG_HMC425=m
+CONFIG_AD7150=m
+CONFIG_ATLAS_PH_SENSOR=m
+CONFIG_ATLAS_EZO_SENSOR=m
+CONFIG_BME680=m
+CONFIG_CCS811=m
+CONFIG_IAQCORE=m
+CONFIG_PMS7003=m
+CONFIG_SCD30_CORE=m
+CONFIG_SCD30_I2C=m
+CONFIG_SCD30_SERIAL=m
+CONFIG_SENSIRION_SGP30=m
+CONFIG_SENSIRION_SGP40=m
+CONFIG_SPS30_I2C=m
+CONFIG_SPS30_SERIAL=m
+CONFIG_VZ89X=m
+CONFIG_AD5064=m
+CONFIG_AD5360=m
+CONFIG_AD5380=m
+CONFIG_AD5421=m
+CONFIG_AD5446=m
+CONFIG_AD5449=m
+CONFIG_AD5592R=m
+CONFIG_AD5593R=m
+CONFIG_AD5504=m
+CONFIG_AD5624R_SPI=m
+CONFIG_AD5686_SPI=m
+CONFIG_AD5696_I2C=m
+CONFIG_AD5755=m
+CONFIG_AD5758=m
+CONFIG_AD5761=m
+CONFIG_AD5764=m
+CONFIG_AD5766=m
+CONFIG_AD5770R=m
+CONFIG_AD5791=m
+CONFIG_AD7303=m
+CONFIG_AD8801=m
+CONFIG_DPOT_DAC=m
+CONFIG_DS4424=m
+CONFIG_LTC1660=m
+CONFIG_LTC2632=m
+CONFIG_M62332=m
+CONFIG_MAX517=m
+CONFIG_MAX5821=m
+CONFIG_MCP4725=m
+CONFIG_MCP4922=m
+CONFIG_TI_DAC082S085=m
+CONFIG_TI_DAC5571=m
+CONFIG_TI_DAC7311=m
+CONFIG_TI_DAC7612=m
+CONFIG_AD9523=m
+CONFIG_ADF4350=m
+CONFIG_ADF4371=m
+CONFIG_ADIS16080=m
+CONFIG_ADIS16130=m
+CONFIG_ADIS16136=m
+CONFIG_ADIS16260=m
+CONFIG_ADXRS290=m
+CONFIG_ADXRS450=m
+CONFIG_BMG160=m
+CONFIG_FXAS21002C=m
+CONFIG_HID_SENSOR_GYRO_3D=m
+CONFIG_MPU3050_I2C=m
+CONFIG_IIO_ST_GYRO_3AXIS=m
+CONFIG_ITG3200=m
+CONFIG_AFE4403=m
+CONFIG_AFE4404=m
+CONFIG_MAX30100=m
+CONFIG_MAX30102=m
+CONFIG_AM2315=m
+CONFIG_DHT11=m
+CONFIG_HDC100X=m
+CONFIG_HDC2010=m
+CONFIG_HID_SENSOR_HUMIDITY=m
+CONFIG_HTS221=m
+CONFIG_HTU21=m
+CONFIG_SI7005=m
+CONFIG_SI7020=m
+CONFIG_ADIS16400=m
+CONFIG_ADIS16460=m
+CONFIG_ADIS16475=m
+CONFIG_ADIS16480=m
+CONFIG_BMI160_I2C=m
+CONFIG_BMI160_SPI=m
+CONFIG_FXOS8700_I2C=m
+CONFIG_FXOS8700_SPI=m
+CONFIG_KMX61=m
+CONFIG_INV_ICM42600_I2C=m
+CONFIG_INV_ICM42600_SPI=m
+CONFIG_INV_MPU6050_I2C=m
+CONFIG_INV_MPU6050_SPI=m
+CONFIG_IIO_ST_LSM6DSX=m
+CONFIG_IIO_ST_LSM9DS0=m
+CONFIG_ADJD_S311=m
+CONFIG_ADUX1020=m
+CONFIG_AL3010=m
+CONFIG_AL3320A=m
+CONFIG_APDS9300=m
+CONFIG_APDS9960=m
+CONFIG_AS73211=m
+CONFIG_BH1750=m
+CONFIG_BH1780=m
+CONFIG_CM32181=m
+CONFIG_CM3232=m
+CONFIG_CM3323=m
+CONFIG_CM3605=m
+CONFIG_CM36651=m
+CONFIG_GP2AP002=m
+CONFIG_GP2AP020A00F=m
+CONFIG_SENSORS_ISL29018=m
+CONFIG_SENSORS_ISL29028=m
+CONFIG_ISL29125=m
+CONFIG_HID_SENSOR_ALS=m
+CONFIG_HID_SENSOR_PROX=m
+CONFIG_JSA1212=m
+CONFIG_RPR0521=m
+CONFIG_LTR501=m
+CONFIG_LV0104CS=m
+CONFIG_MAX44000=m
+CONFIG_MAX44009=m
+CONFIG_NOA1305=m
+CONFIG_OPT3001=m
+CONFIG_PA12203001=m
+CONFIG_SI1133=m
+CONFIG_SI1145=m
+CONFIG_STK3310=m
+CONFIG_ST_UVIS25=m
+CONFIG_TCS3414=m
+CONFIG_TCS3472=m
+CONFIG_SENSORS_TSL2563=m
+CONFIG_TSL2583=m
+CONFIG_TSL2591=m
+CONFIG_TSL2772=m
+CONFIG_TSL4531=m
+CONFIG_US5182D=m
+CONFIG_VCNL4000=m
+CONFIG_VCNL4035=m
+CONFIG_VEML6030=m
+CONFIG_VEML6070=m
+CONFIG_VL6180=m
+CONFIG_ZOPT2201=m
+CONFIG_AK8974=m
+CONFIG_AK09911=m
+CONFIG_BMC150_MAGN_I2C=m
+CONFIG_BMC150_MAGN_SPI=m
+CONFIG_MAG3110=m
+CONFIG_HID_SENSOR_MAGNETOMETER_3D=m
+CONFIG_MMC35240=m
+CONFIG_SENSORS_HMC5843_I2C=m
+CONFIG_SENSORS_HMC5843_SPI=m
+CONFIG_SENSORS_RM3100_I2C=m
+CONFIG_SENSORS_RM3100_SPI=m
+CONFIG_YAMAHA_YAS530=m
+CONFIG_IIO_MUX=m
+CONFIG_HID_SENSOR_INCLINOMETER_3D=m
+CONFIG_HID_SENSOR_DEVICE_ROTATION=m
+CONFIG_IIO_HRTIMER_TRIGGER=m
+CONFIG_IIO_INTERRUPT_TRIGGER=m
+CONFIG_IIO_TIGHTLOOP_TRIGGER=m
+CONFIG_IIO_SYSFS_TRIGGER=m
+CONFIG_HID_SENSOR_CUSTOM_INTEL_HINGE=m
+CONFIG_AD5110=m
+CONFIG_AD5272=m
+CONFIG_DS1803=m
+CONFIG_MAX5432=m
+CONFIG_MAX5481=m
+CONFIG_MAX5487=m
+CONFIG_MCP4018=m
+CONFIG_MCP4131=m
+CONFIG_MCP4531=m
+CONFIG_MCP41010=m
+CONFIG_TPL0102=m
+CONFIG_LMP91000=m
+CONFIG_ABP060MG=m
+CONFIG_BMP280=m
+CONFIG_DLHL60D=m
+CONFIG_DPS310=m
+CONFIG_HID_SENSOR_PRESS=m
+CONFIG_HP03=m
+CONFIG_ICP10100=m
+CONFIG_MPL115_I2C=m
+CONFIG_MPL115_SPI=m
+CONFIG_MPL3115=m
+CONFIG_MS5611=m
+CONFIG_MS5611_I2C=m
+CONFIG_MS5611_SPI=m
+CONFIG_MS5637=m
+CONFIG_IIO_ST_PRESS=m
+CONFIG_T5403=m
+CONFIG_HP206C=m
+CONFIG_ZPA2326=m
+CONFIG_AS3935=m
+CONFIG_ISL29501=m
+CONFIG_LIDAR_LITE_V2=m
+CONFIG_MB1232=m
+CONFIG_PING=m
+CONFIG_RFD77402=m
+CONFIG_SRF04=m
+CONFIG_SX9310=m
+CONFIG_SX9500=m
+CONFIG_SRF08=m
+CONFIG_VCNL3020=m
+CONFIG_VL53L0X_I2C=m
+CONFIG_AD2S90=m
+CONFIG_AD2S1200=m
+CONFIG_LTC2983=m
+CONFIG_MAXIM_THERMOCOUPLE=m
+CONFIG_HID_SENSOR_TEMP=m
+CONFIG_MLX90614=m
+CONFIG_MLX90632=m
+CONFIG_TMP006=m
+CONFIG_TMP007=m
+CONFIG_TMP117=m
+CONFIG_TSYS01=m
+CONFIG_TSYS02D=m
+CONFIG_MAX31856=m
+CONFIG_PWM_OMAP_DMTIMER=y
+CONFIG_PWM_PCA9685=y
+CONFIG_PWM_TIECAP=y
+CONFIG_PWM_TIEHRPWM=y
+CONFIG_RESET_TI_SYSCON=y
+CONFIG_RAS=y
+CONFIG_FPGA=m
+CONFIG_ALTERA_PR_IP_CORE=m
+CONFIG_ALTERA_PR_IP_CORE_PLAT=m
+CONFIG_FPGA_MGR_ALTERA_PS_SPI=m
+CONFIG_FPGA_MGR_XILINX_SPI=m
+CONFIG_FPGA_MGR_ICE40_SPI=m
+CONFIG_FPGA_MGR_MACHXO2_SPI=m
+CONFIG_FPGA_BRIDGE=m
+CONFIG_ALTERA_FREEZE_BRIDGE=m
+CONFIG_XILINX_PR_DECOUPLER=m
+CONFIG_FPGA_REGION=m
+CONFIG_OF_FPGA_REGION=m
+CONFIG_COUNTER=m
+CONFIG_INTERRUPT_CNT=m
+CONFIG_TI_EQEP=m
+CONFIG_VALIDATE_FS_PARSER=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_JFS_FS=m
+CONFIG_JFS_POSIX_ACL=y
+CONFIG_JFS_SECURITY=y
+CONFIG_GFS2_FS=m
+CONFIG_GFS2_FS_LOCKING_DLM=y
+CONFIG_BTRFS_FS=y
+CONFIG_BTRFS_FS_POSIX_ACL=y
+CONFIG_F2FS_FS=y
+CONFIG_F2FS_FS_SECURITY=y
+CONFIG_FS_ENCRYPTION=y
+CONFIG_FS_VERITY=y
+CONFIG_FANOTIFY=y
+CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
+CONFIG_QUOTA=y
+CONFIG_QUOTA_NETLINK_INTERFACE=y
+CONFIG_QFMT_V2=m
+CONFIG_AUTOFS4_FS=y
+CONFIG_FUSE_FS=y
+CONFIG_CUSE=m
+CONFIG_OVERLAY_FS=y
+CONFIG_FSCACHE=m
+CONFIG_FSCACHE_STATS=y
+CONFIG_CACHEFILES=m
+CONFIG_ISO9660_FS=m
+CONFIG_JOLIET=y
+CONFIG_ZISOFS=y
+CONFIG_UDF_FS=m
+CONFIG_MSDOS_FS=y
+CONFIG_VFAT_FS=y
+CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
+CONFIG_FAT_DEFAULT_UTF8=y
+CONFIG_EXFAT_FS=m
+CONFIG_NTFS_FS=m
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_ECRYPT_FS=m
+CONFIG_ECRYPT_FS_MESSAGING=y
+CONFIG_JFFS2_FS=m
+CONFIG_JFFS2_SUMMARY=y
+CONFIG_JFFS2_FS_XATTR=y
+CONFIG_JFFS2_COMPRESSION_OPTIONS=y
+CONFIG_JFFS2_LZO=y
+CONFIG_UBIFS_FS=y
+CONFIG_UBIFS_FS_ADVANCED_COMPR=y
+CONFIG_SQUASHFS=m
+CONFIG_SQUASHFS_XATTR=y
+CONFIG_SQUASHFS_LZ4=y
+CONFIG_SQUASHFS_LZO=y
+CONFIG_SQUASHFS_XZ=y
+CONFIG_SQUASHFS_ZSTD=y
+CONFIG_ROMFS_FS=m
+CONFIG_ROMFS_BACKED_BY_BOTH=y
+CONFIG_AUFS_FS=m
+CONFIG_AUFS_EXPORT=y
+CONFIG_AUFS_XATTR=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3_ACL=y
+CONFIG_NFS_V4=y
+CONFIG_NFS_SWAP=y
+CONFIG_NFS_V4_1=y
+CONFIG_NFS_V4_2=y
+CONFIG_ROOT_NFS=y
+CONFIG_NFSD=m
+CONFIG_NFSD_V3_ACL=y
+CONFIG_NFSD_V4=y
+CONFIG_NFSD_BLOCKLAYOUT=y
+CONFIG_NFSD_V4_SECURITY_LABEL=y
+CONFIG_SUNRPC_DEBUG=y
+CONFIG_CEPH_FS=m
+CONFIG_CEPH_FSCACHE=y
+CONFIG_CEPH_FS_POSIX_ACL=y
+CONFIG_CIFS=m
+# CONFIG_CIFS_STATS2 is not set
+CONFIG_CIFS_UPCALL=y
+CONFIG_CIFS_XATTR=y
+CONFIG_CIFS_POSIX=y
+CONFIG_CIFS_DFS_UPCALL=y
+CONFIG_CIFS_FSCACHE=y
+CONFIG_CODA_FS=m
+CONFIG_AFS_FS=m
+CONFIG_AFS_FSCACHE=y
+CONFIG_9P_FS=m
+CONFIG_9P_FSCACHE=y
+CONFIG_9P_FS_POSIX_ACL=y
+CONFIG_9P_FS_SECURITY=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_CODEPAGE_737=m
+CONFIG_NLS_CODEPAGE_775=m
+CONFIG_NLS_CODEPAGE_850=m
+CONFIG_NLS_CODEPAGE_852=m
+CONFIG_NLS_CODEPAGE_855=m
+CONFIG_NLS_CODEPAGE_857=m
+CONFIG_NLS_CODEPAGE_860=m
+CONFIG_NLS_CODEPAGE_861=m
+CONFIG_NLS_CODEPAGE_862=m
+CONFIG_NLS_CODEPAGE_863=m
+CONFIG_NLS_CODEPAGE_864=m
+CONFIG_NLS_CODEPAGE_865=m
+CONFIG_NLS_CODEPAGE_866=m
+CONFIG_NLS_CODEPAGE_869=m
+CONFIG_NLS_CODEPAGE_936=m
+CONFIG_NLS_CODEPAGE_950=m
+CONFIG_NLS_CODEPAGE_932=m
+CONFIG_NLS_CODEPAGE_949=m
+CONFIG_NLS_CODEPAGE_874=m
+CONFIG_NLS_ISO8859_8=m
+CONFIG_NLS_CODEPAGE_1250=m
+CONFIG_NLS_CODEPAGE_1251=m
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_ISO8859_1=m
+CONFIG_NLS_ISO8859_2=m
+CONFIG_NLS_ISO8859_3=m
+CONFIG_NLS_ISO8859_4=m
+CONFIG_NLS_ISO8859_5=m
+CONFIG_NLS_ISO8859_6=m
+CONFIG_NLS_ISO8859_7=m
+CONFIG_NLS_ISO8859_9=m
+CONFIG_NLS_ISO8859_13=m
+CONFIG_NLS_ISO8859_14=m
+CONFIG_NLS_ISO8859_15=m
+CONFIG_NLS_KOI8_R=m
+CONFIG_NLS_KOI8_U=m
+CONFIG_NLS_MAC_ROMAN=m
+CONFIG_NLS_MAC_CELTIC=m
+CONFIG_NLS_MAC_CENTEURO=m
+CONFIG_NLS_MAC_CROATIAN=m
+CONFIG_NLS_MAC_CYRILLIC=m
+CONFIG_NLS_MAC_GAELIC=m
+CONFIG_NLS_MAC_GREEK=m
+CONFIG_NLS_MAC_ICELAND=m
+CONFIG_NLS_MAC_INUIT=m
+CONFIG_NLS_MAC_ROMANIAN=m
+CONFIG_NLS_MAC_TURKISH=m
+CONFIG_NLS_UTF8=y
+CONFIG_DLM=m
+CONFIG_DLM_DEBUG=y
+CONFIG_UNICODE=y
+CONFIG_SECURITY=y
+CONFIG_SECURITY_NETWORK_XFRM=y
+CONFIG_HARDENED_USERCOPY=y
+# CONFIG_HARDENED_USERCOPY_FALLBACK is not set
+CONFIG_FORTIFY_SOURCE=y
+CONFIG_SECURITY_SELINUX=y
+CONFIG_SECURITY_TOMOYO=y
+CONFIG_SECURITY_APPARMOR=y
+CONFIG_SECURITY_YAMA=y
+CONFIG_INTEGRITY_SIGNATURE=y
+CONFIG_INTEGRITY_ASYMMETRIC_KEYS=y
+# CONFIG_INTEGRITY_TRUSTED_KEYRING is not set
+CONFIG_DEFAULT_SECURITY_APPARMOR=y
+CONFIG_LSM="yama,loadpin,safesetid,integrity,apparmor,selinux,smack,tomoyo"
+CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y
+CONFIG_CRYPTO_USER=m
+CONFIG_CRYPTO_AUTHENC=y
+CONFIG_CRYPTO_TEST=m
+CONFIG_CRYPTO_DH=y
+CONFIG_CRYPTO_CHACHA20POLY1305=m
+CONFIG_CRYPTO_AEGIS128=m
+CONFIG_CRYPTO_SEQIV=y
+CONFIG_CRYPTO_LRW=m
+CONFIG_CRYPTO_ADIANTUM=m
+CONFIG_CRYPTO_XCBC=m
+CONFIG_CRYPTO_VMAC=m
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_RMD160=m
+CONFIG_CRYPTO_SHA3=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_ANUBIS=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_BLOWFISH=m
+CONFIG_CRYPTO_CAMELLIA=m
+CONFIG_CRYPTO_CAST5=m
+CONFIG_CRYPTO_CAST6=m
+CONFIG_CRYPTO_DES=m
+CONFIG_CRYPTO_KHAZAD=m
+CONFIG_CRYPTO_SEED=m
+CONFIG_CRYPTO_SERPENT=m
+CONFIG_CRYPTO_TEA=m
+CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_LZ4=m
+CONFIG_CRYPTO_LZ4HC=m
+CONFIG_CRYPTO_ANSI_CPRNG=m
+CONFIG_CRYPTO_USER_API_HASH=m
+CONFIG_CRYPTO_USER_API_SKCIPHER=m
+CONFIG_CRYPTO_USER_API_RNG=m
+CONFIG_CRYPTO_USER_API_AEAD=m
+CONFIG_CRYPTO_DEV_OMAP=y
+CONFIG_CRYPTO_DEV_OMAP_SHAM=y
+CONFIG_CRYPTO_DEV_OMAP_AES=y
+CONFIG_CRYPTO_DEV_OMAP_DES=y
+CONFIG_CRYPTO_DEV_ATMEL_ECC=y
+CONFIG_CRYPTO_DEV_ATMEL_SHA204A=y
+CONFIG_CRYPTO_DEV_VIRTIO=m
+# CONFIG_RAID6_PQ_BENCHMARK is not set
+CONFIG_CORDIC=m
+# CONFIG_XZ_DEC_X86 is not set
+# CONFIG_XZ_DEC_POWERPC is not set
+# CONFIG_XZ_DEC_IA64 is not set
+# CONFIG_XZ_DEC_SPARC is not set
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=48
+CONFIG_IRQ_POLL=y
+CONFIG_FONTS=y
+CONFIG_FONT_8x8=y
+CONFIG_FONT_8x16=y
+CONFIG_FONT_TER16x32=y
+CONFIG_PRINTK_TIME=y
+CONFIG_BOOT_PRINTK_DELAY=y
+CONFIG_DYNAMIC_DEBUG=y
+CONFIG_STRIP_ASM_SYMS=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x01b6
+CONFIG_PAGE_EXTENSION=y
+CONFIG_PAGE_POISONING=y
+CONFIG_DEBUG_WX=y
+CONFIG_SCHED_STACK_END_CHECK=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_SOFTLOCKUP_DETECTOR=y
+CONFIG_SCHEDSTATS=y
+CONFIG_BUG_ON_DATA_CORRUPTION=y
+# CONFIG_RCU_TRACE is not set
+CONFIG_STACK_TRACER=y
+CONFIG_FTRACE_SYSCALLS=y
+CONFIG_TRACER_SNAPSHOT=y
+CONFIG_BLK_DEV_IO_TRACE=y
+# CONFIG_STRICT_DEVMEM is not set
+CONFIG_NOTIFIER_ERROR_INJECTION=m
+# CONFIG_RUNTIME_TESTING_MENU is not set
diff -Naur --no-dereference a/arch/arm/include/asm/xor.h b/arch/arm/include/asm/xor.h
--- a/arch/arm/include/asm/xor.h	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/include/asm/xor.h	2022-06-12 13:07:42.551111715 -0400
@@ -209,3 +209,9 @@
 #else
 #define NEON_TEMPLATES
 #endif
+
+#ifdef CONFIG_KERNEL_MODE_NEON
+#define XOR_SELECT_TEMPLATE(FASTEST)	(&xor_block_neon)
+#else
+#define XOR_SELECT_TEMPLATE(FASTEST)	(&xor_block_arm4regs)
+#endif
diff -Naur --no-dereference a/arch/arm/Makefile b/arch/arm/Makefile
--- a/arch/arm/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/arch/arm/Makefile	2022-06-12 13:07:42.547111701 -0400
@@ -56,6 +56,9 @@
 #
 KBUILD_CFLAGS	+= $(call cc-option,-fno-ipa-sra)
 
+# Need -msoft-float for gcc 11 for the below instruction set selection
+KBUILD_CFLAGS	+= -msoft-float
+
 # This selects which instruction set is used.
 # Note that GCC does not numerically define an architecture version
 # macro, but instead defines a whole series of macros which makes
@@ -125,7 +128,7 @@
 endif
 
 # Need -Uarm for gcc < 3.x
-KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
+KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -Uarm
 KBUILD_AFLAGS	+=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 
 CHECKFLAGS	+= -D__arm__
diff -Naur --no-dereference a/Documentation/ABI/testing/debugfs-aufs b/Documentation/ABI/testing/debugfs-aufs
--- a/Documentation/ABI/testing/debugfs-aufs	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/ABI/testing/debugfs-aufs	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,55 @@
+What:		/debug/aufs/si_<id>/
+Date:		March 2009
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		Under /debug/aufs, a directory named si_<id> is created
+		per aufs mount, where <id> is a unique id generated
+		internally.
+
+What:		/debug/aufs/si_<id>/plink
+Date:		Apr 2013
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		It has three lines and shows the information about the
+		pseudo-link. The first line is a single number
+		representing a number of buckets. The second line is a
+		number of pseudo-links per buckets (separated by a
+		blank). The last line is a single number representing a
+		total number of psedo-links.
+		When the aufs mount option 'noplink' is specified, it
+		will show "1\n0\n0\n".
+
+What:		/debug/aufs/si_<id>/xib
+Date:		March 2009
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		It shows the consumed blocks by xib (External Inode Number
+		Bitmap), its block size and file size.
+		When the aufs mount option 'noxino' is specified, it
+		will be empty. About XINO files, see the aufs manual.
+
+What:		/debug/aufs/si_<id>/xi<branch-index>
+Date:		March 2009
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		It shows the consumed blocks by xino (External Inode Number
+		Translation Table), its link count, block size and file
+		size.
+		Due to the file size limit, there may exist multiple
+		xino files per branch.  In this case, "-N" is added to
+		the filename and it corresponds to the index of the
+		internal xino array.  "-0" is omitted.
+		When the aufs mount option 'noxino' is specified, Those
+		entries won't exist.  About XINO files, see the aufs
+		manual.
+
+What:		/debug/aufs/si_<id>/xigen
+Date:		March 2009
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		It shows the consumed blocks by xigen (External Inode
+		Generation Table), its block size and file size.
+		If CONFIG_AUFS_EXPORT is disabled, this entry will not
+		be created.
+		When the aufs mount option 'noxino' is specified, it
+		will be empty. About XINO files, see the aufs manual.
diff -Naur --no-dereference a/Documentation/ABI/testing/sysfs-aufs b/Documentation/ABI/testing/sysfs-aufs
--- a/Documentation/ABI/testing/sysfs-aufs	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/ABI/testing/sysfs-aufs	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,31 @@
+What:		/sys/fs/aufs/si_<id>/
+Date:		March 2009
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		Under /sys/fs/aufs, a directory named si_<id> is created
+		per aufs mount, where <id> is a unique id generated
+		internally.
+
+What:		/sys/fs/aufs/si_<id>/br<idx>
+Date:		March 2009
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		It shows the abolute path of a member directory (which
+		is called branch) in aufs, and its permission.
+
+What:		/sys/fs/aufs/si_<id>/brid<idx>
+Date:		July 2013
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		It shows the id of a member directory (which is called
+		branch) in aufs.
+
+What:		/sys/fs/aufs/si_<id>/xi_path
+Date:		March 2009
+Contact:	J. R. Okajima <hooanon05g@gmail.com>
+Description:
+		It shows the abolute path of XINO (External Inode Number
+		Bitmap, Translation Table and Generation Table) file
+		even if it is the default path.
+		When the aufs mount option 'noxino' is specified, it
+		will be empty. About XINO files, see the aufs manual.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/01intro.txt b/Documentation/filesystems/aufs/design/01intro.txt
--- a/Documentation/filesystems/aufs/design/01intro.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/01intro.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,171 @@
+
+# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Introduction
+----------------------------------------
+
+aufs [ei ju: ef es] | /ey-yoo-ef-es/ | [a u f s]
+1. abbrev. for "advanced multi-layered unification filesystem".
+2. abbrev. for "another unionfs".
+3. abbrev. for "auf das" in German which means "on the" in English.
+   Ex. "Butter aufs Brot"(G) means "butter onto bread"(E).
+   But "Filesystem aufs Filesystem" is hard to understand.
+4. abbrev. for "African Urban Fashion Show".
+
+AUFS is a filesystem with features:
+- multi layered stackable unification filesystem, the member directory
+  is called as a branch.
+- branch permission and attribute, 'readonly', 'real-readonly',
+  'readwrite', 'whiteout-able', 'link-able whiteout', etc. and their
+  combination.
+- internal "file copy-on-write".
+- logical deletion, whiteout.
+- dynamic branch manipulation, adding, deleting and changing permission.
+- allow bypassing aufs, user's direct branch access.
+- external inode number translation table and bitmap which maintains the
+  persistent aufs inode number.
+- seekable directory, including NFS readdir.
+- file mapping, mmap and sharing pages.
+- pseudo-link, hardlink over branches.
+- loopback mounted filesystem as a branch.
+- several policies to select one among multiple writable branches.
+- revert a single systemcall when an error occurs in aufs.
+- and more...
+
+
+Multi Layered Stackable Unification Filesystem
+----------------------------------------------------------------------
+Most people already knows what it is.
+It is a filesystem which unifies several directories and provides a
+merged single directory. When users access a file, the access will be
+passed/re-directed/converted (sorry, I am not sure which English word is
+correct) to the real file on the member filesystem. The member
+filesystem is called 'lower filesystem' or 'branch' and has a mode
+'readonly' and 'readwrite.' And the deletion for a file on the lower
+readonly branch is handled by creating 'whiteout' on the upper writable
+branch.
+
+On LKML, there have been discussions about UnionMount (Jan Blunck,
+Bharata B Rao and Valerie Aurora) and Unionfs (Erez Zadok). They took
+different approaches to implement the merged-view.
+The former tries putting it into VFS, and the latter implements as a
+separate filesystem.
+(If I misunderstand about these implementations, please let me know and
+I shall correct it. Because it is a long time ago when I read their
+source files last time).
+
+UnionMount's approach will be able to small, but may be hard to share
+branches between several UnionMount since the whiteout in it is
+implemented in the inode on branch filesystem and always
+shared. According to Bharata's post, readdir does not seems to be
+finished yet.
+There are several missing features known in this implementations such as
+- for users, the inode number may change silently. eg. copy-up.
+- link(2) may break by copy-up.
+- read(2) may get an obsoleted filedata (fstat(2) too).
+- fcntl(F_SETLK) may be broken by copy-up.
+- unnecessary copy-up may happen, for example mmap(MAP_PRIVATE) after
+  open(O_RDWR).
+
+In linux-3.18, "overlay" filesystem (formerly known as "overlayfs") was
+merged into mainline. This is another implementation of UnionMount as a
+separated filesystem. All the limitations and known problems which
+UnionMount are equally inherited to "overlay" filesystem.
+
+Unionfs has a longer history. When I started implementing a stackable
+filesystem (Aug 2005), it already existed. It has virtual super_block,
+inode, dentry and file objects and they have an array pointing lower
+same kind objects. After contributing many patches for Unionfs, I
+re-started my project AUFS (Jun 2006).
+
+In AUFS, the structure of filesystem resembles to Unionfs, but I
+implemented my own ideas, approaches and enhancements and it became
+totally different one.
+
+Comparing DM snapshot and fs based implementation
+- the number of bytes to be copied between devices is much smaller.
+- the type of filesystem must be one and only.
+- the fs must be writable, no readonly fs, even for the lower original
+  device. so the compression fs will not be usable. but if we use
+  loopback mount, we may address this issue.
+  for instance,
+	mount /cdrom/squashfs.img /sq
+	losetup /sq/ext2.img
+	losetup /somewhere/cow
+	dmsetup "snapshot /dev/loop0 /dev/loop1 ..."
+- it will be difficult (or needs more operations) to extract the
+  difference between the original device and COW.
+- DM snapshot-merge may help a lot when users try merging. in the
+  fs-layer union, users will use rsync(1).
+
+You may want to read my old paper "Filesystems in LiveCD"
+(http://aufs.sourceforge.net/aufs2/report/sq/sq.pdf).
+
+
+Several characters/aspects/persona of aufs
+----------------------------------------------------------------------
+
+Aufs has several characters, aspects or persona.
+1. a filesystem, callee of VFS helper
+2. sub-VFS, caller of VFS helper for branches
+3. a virtual filesystem which maintains persistent inode number
+4. reader/writer of files on branches such like an application
+
+1. Callee of VFS Helper
+As an ordinary linux filesystem, aufs is a callee of VFS. For instance,
+unlink(2) from an application reaches sys_unlink() kernel function and
+then vfs_unlink() is called. vfs_unlink() is one of VFS helper and it
+calls filesystem specific unlink operation. Actually aufs implements the
+unlink operation but it behaves like a redirector.
+
+2. Caller of VFS Helper for Branches
+aufs_unlink() passes the unlink request to the branch filesystem as if
+it were called from VFS. So the called unlink operation of the branch
+filesystem acts as usual. As a caller of VFS helper, aufs should handle
+every necessary pre/post operation for the branch filesystem.
+- acquire the lock for the parent dir on a branch
+- lookup in a branch
+- revalidate dentry on a branch
+- mnt_want_write() for a branch
+- vfs_unlink() for a branch
+- mnt_drop_write() for a branch
+- release the lock on a branch
+
+3. Persistent Inode Number
+One of the most important issue for a filesystem is to maintain inode
+numbers. This is particularly important to support exporting a
+filesystem via NFS. Aufs is a virtual filesystem which doesn't have a
+backend block device for its own. But some storage is necessary to
+keep and maintain the inode numbers. It may be a large space and may not
+suit to keep in memory. Aufs rents some space from its first writable
+branch filesystem (by default) and creates file(s) on it. These files
+are created by aufs internally and removed soon (currently) keeping
+opened.
+Note: Because these files are removed, they are totally gone after
+      unmounting aufs. It means the inode numbers are not persistent
+      across unmount or reboot. I have a plan to make them really
+      persistent which will be important for aufs on NFS server.
+
+4. Read/Write Files Internally (copy-on-write)
+Because a branch can be readonly, when you write a file on it, aufs will
+"copy-up" it to the upper writable branch internally. And then write the
+originally requested thing to the file. Generally kernel doesn't
+open/read/write file actively. In aufs, even a single write may cause a
+internal "file copy". This behaviour is very similar to cp(1) command.
+
+Some people may think it is better to pass such work to user space
+helper, instead of doing in kernel space. Actually I am still thinking
+about it. But currently I have implemented it in kernel space.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/02struct.txt b/Documentation/filesystems/aufs/design/02struct.txt
--- a/Documentation/filesystems/aufs/design/02struct.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/02struct.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,258 @@
+
+# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Basic Aufs Internal Structure
+
+Superblock/Inode/Dentry/File Objects
+----------------------------------------------------------------------
+As like an ordinary filesystem, aufs has its own
+superblock/inode/dentry/file objects. All these objects have a
+dynamically allocated array and store the same kind of pointers to the
+lower filesystem, branch.
+For example, when you build a union with one readwrite branch and one
+readonly, mounted /au, /rw and /ro respectively.
+- /au = /rw + /ro
+- /ro/fileA exists but /rw/fileA
+
+Aufs lookup operation finds /ro/fileA and gets dentry for that. These
+pointers are stored in a aufs dentry. The array in aufs dentry will be,
+- [0] = NULL (because /rw/fileA doesn't exist)
+- [1] = /ro/fileA
+
+This style of an array is essentially same to the aufs
+superblock/inode/dentry/file objects.
+
+Because aufs supports manipulating branches, ie. add/delete/change
+branches dynamically, these objects has its own generation. When
+branches are changed, the generation in aufs superblock is
+incremented. And a generation in other object are compared when it is
+accessed. When a generation in other objects are obsoleted, aufs
+refreshes the internal array.
+
+
+Superblock
+----------------------------------------------------------------------
+Additionally aufs superblock has some data for policies to select one
+among multiple writable branches, XIB files, pseudo-links and kobject.
+See below in detail.
+About the policies which supports copy-down a directory, see
+wbr_policy.txt too.
+
+
+Branch and XINO(External Inode Number Translation Table)
+----------------------------------------------------------------------
+Every branch has its own xino (external inode number translation table)
+file. The xino file is created and unlinked by aufs internally. When two
+members of a union exist on the same filesystem, they share the single
+xino file.
+The struct of a xino file is simple, just a sequence of aufs inode
+numbers which is indexed by the lower inode number.
+In the above sample, assume the inode number of /ro/fileA is i111 and
+aufs assigns the inode number i999 for fileA. Then aufs writes 999 as
+4(8) bytes at 111 * 4(8) bytes offset in the xino file.
+
+When the inode numbers are not contiguous, the xino file will be sparse
+which has a hole in it and doesn't consume as much disk space as it
+might appear. If your branch filesystem consumes disk space for such
+holes, then you should specify 'xino=' option at mounting aufs.
+
+Aufs has a mount option to free the disk blocks for such holes in XINO
+files on tmpfs or ramdisk. But it is not so effective actually. If you
+meet a problem of disk shortage due to XINO files, then you should try
+"tmpfs-ino.patch" (and "vfs-ino.patch" too) in aufs4-standalone.git.
+The patch localizes the assignment inumbers per tmpfs-mount and avoid
+the holes in XINO files.
+
+Also a writable branch has three kinds of "whiteout bases". All these
+are existed when the branch is joined to aufs, and their names are
+whiteout-ed doubly, so that users will never see their names in aufs
+hierarchy.
+1. a regular file which will be hardlinked to all whiteouts.
+2. a directory to store a pseudo-link.
+3. a directory to store an "orphan"-ed file temporary.
+
+1. Whiteout Base
+   When you remove a file on a readonly branch, aufs handles it as a
+   logical deletion and creates a whiteout on the upper writable branch
+   as a hardlink of this file in order not to consume inode on the
+   writable branch.
+2. Pseudo-link Dir
+   See below, Pseudo-link.
+3. Step-Parent Dir
+   When "fileC" exists on the lower readonly branch only and it is
+   opened and removed with its parent dir, and then user writes
+   something into it, then aufs copies-up fileC to this
+   directory. Because there is no other dir to store fileC. After
+   creating a file under this dir, the file is unlinked.
+
+Because aufs supports manipulating branches, ie. add/delete/change
+dynamically, a branch has its own id. When the branch order changes,
+aufs finds the new index by searching the branch id.
+
+
+Pseudo-link
+----------------------------------------------------------------------
+Assume "fileA" exists on the lower readonly branch only and it is
+hardlinked to "fileB" on the branch. When you write something to fileA,
+aufs copies-up it to the upper writable branch. Additionally aufs
+creates a hardlink under the Pseudo-link Directory of the writable
+branch. The inode of a pseudo-link is kept in aufs super_block as a
+simple list. If fileB is read after unlinking fileA, aufs returns
+filedata from the pseudo-link instead of the lower readonly
+branch. Because the pseudo-link is based upon the inode, to keep the
+inode number by xino (see above) is essentially necessary.
+
+All the hardlinks under the Pseudo-link Directory of the writable branch
+should be restored in a proper location later. Aufs provides a utility
+to do this. The userspace helpers executed at remounting and unmounting
+aufs by default.
+During this utility is running, it puts aufs into the pseudo-link
+maintenance mode. In this mode, only the process which began the
+maintenance mode (and its child processes) is allowed to operate in
+aufs. Some other processes which are not related to the pseudo-link will
+be allowed to run too, but the rest have to return an error or wait
+until the maintenance mode ends. If a process already acquires an inode
+mutex (in VFS), it has to return an error.
+
+
+XIB(external inode number bitmap)
+----------------------------------------------------------------------
+Addition to the xino file per a branch, aufs has an external inode number
+bitmap in a superblock object. It is also an internal file such like a
+xino file.
+It is a simple bitmap to mark whether the aufs inode number is in-use or
+not.
+To reduce the file I/O, aufs prepares a single memory page to cache xib.
+
+As well as XINO files, aufs has a feature to truncate/refresh XIB to
+reduce the number of consumed disk blocks for these files.
+
+
+Virtual or Vertical Dir, and Readdir in Userspace
+----------------------------------------------------------------------
+In order to support multiple layers (branches), aufs readdir operation
+constructs a virtual dir block on memory. For readdir, aufs calls
+vfs_readdir() internally for each dir on branches, merges their entries
+with eliminating the whiteout-ed ones, and sets it to file (dir)
+object. So the file object has its entry list until it is closed. The
+entry list will be updated when the file position is zero and becomes
+obsoleted. This decision is made in aufs automatically.
+
+The dynamically allocated memory block for the name of entries has a
+unit of 512 bytes (by default) and stores the names contiguously (no
+padding). Another block for each entry is handled by kmem_cache too.
+During building dir blocks, aufs creates hash list and judging whether
+the entry is whiteouted by its upper branch or already listed.
+The merged result is cached in the corresponding inode object and
+maintained by a customizable life-time option.
+
+Some people may call it can be a security hole or invite DoS attack
+since the opened and once readdir-ed dir (file object) holds its entry
+list and becomes a pressure for system memory. But I'd say it is similar
+to files under /proc or /sys. The virtual files in them also holds a
+memory page (generally) while they are opened. When an idea to reduce
+memory for them is introduced, it will be applied to aufs too.
+For those who really hate this situation, I've developed readdir(3)
+library which operates this merging in userspace. You just need to set
+LD_PRELOAD environment variable, and aufs will not consume no memory in
+kernel space for readdir(3).
+
+
+Workqueue
+----------------------------------------------------------------------
+Aufs sometimes requires privilege access to a branch. For instance,
+in copy-up/down operation. When a user process is going to make changes
+to a file which exists in the lower readonly branch only, and the mode
+of one of ancestor directories may not be writable by a user
+process. Here aufs copy-up the file with its ancestors and they may
+require privilege to set its owner/group/mode/etc.
+This is a typical case of a application character of aufs (see
+Introduction).
+
+Aufs uses workqueue synchronously for this case. It creates its own
+workqueue. The workqueue is a kernel thread and has privilege. Aufs
+passes the request to call mkdir or write (for example), and wait for
+its completion. This approach solves a problem of a signal handler
+simply.
+If aufs didn't adopt the workqueue and changed the privilege of the
+process, then the process may receive the unexpected SIGXFSZ or other
+signals.
+
+Also aufs uses the system global workqueue ("events" kernel thread) too
+for asynchronous tasks, such like handling inotify/fsnotify, re-creating a
+whiteout base and etc. This is unrelated to a privilege.
+Most of aufs operation tries acquiring a rw_semaphore for aufs
+superblock at the beginning, at the same time waits for the completion
+of all queued asynchronous tasks.
+
+
+Whiteout
+----------------------------------------------------------------------
+The whiteout in aufs is very similar to Unionfs's. That is represented
+by its filename. UnionMount takes an approach of a file mode, but I am
+afraid several utilities (find(1) or something) will have to support it.
+
+Basically the whiteout represents "logical deletion" which stops aufs to
+lookup further, but also it represents "dir is opaque" which also stop
+further lookup.
+
+In aufs, rmdir(2) and rename(2) for dir uses whiteout alternatively.
+In order to make several functions in a single systemcall to be
+revertible, aufs adopts an approach to rename a directory to a temporary
+unique whiteouted name.
+For example, in rename(2) dir where the target dir already existed, aufs
+renames the target dir to a temporary unique whiteouted name before the
+actual rename on a branch, and then handles other actions (make it opaque,
+update the attributes, etc). If an error happens in these actions, aufs
+simply renames the whiteouted name back and returns an error. If all are
+succeeded, aufs registers a function to remove the whiteouted unique
+temporary name completely and asynchronously to the system global
+workqueue.
+
+
+Copy-up
+----------------------------------------------------------------------
+It is a well-known feature or concept.
+When user modifies a file on a readonly branch, aufs operate "copy-up"
+internally and makes change to the new file on the upper writable branch.
+When the trigger systemcall does not update the timestamps of the parent
+dir, aufs reverts it after copy-up.
+
+
+Move-down (aufs3.9 and later)
+----------------------------------------------------------------------
+"Copy-up" is one of the essential feature in aufs. It copies a file from
+the lower readonly branch to the upper writable branch when a user
+changes something about the file.
+"Move-down" is an opposite action of copy-up. Basically this action is
+ran manually instead of automatically and internally.
+For desgin and implementation, aufs has to consider these issues.
+- whiteout for the file may exist on the lower branch.
+- ancestor directories may not exist on the lower branch.
+- diropq for the ancestor directories may exist on the upper branch.
+- free space on the lower branch will reduce.
+- another access to the file may happen during moving-down, including
+  UDBA (see "Revalidate Dentry and UDBA").
+- the file should not be hard-linked nor pseudo-linked. they should be
+  handled by auplink utility later.
+
+Sometimes users want to move-down a file from the upper writable branch
+to the lower readonly or writable branch. For instance,
+- the free space of the upper writable branch is going to run out.
+- create a new intermediate branch between the upper and lower branch.
+- etc.
+
+For this purpose, use "aumvdown" command in aufs-util.git.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/03atomic_open.txt b/Documentation/filesystems/aufs/design/03atomic_open.txt
--- a/Documentation/filesystems/aufs/design/03atomic_open.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/03atomic_open.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,85 @@
+
+# Copyright (C) 2015-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Support for a branch who has its ->atomic_open()
+----------------------------------------------------------------------
+The filesystems who implement its ->atomic_open() are not majority. For
+example NFSv4 does, and aufs should call NFSv4 ->atomic_open,
+particularly for open(O_CREAT|O_EXCL, 0400) case. Other than
+->atomic_open(), NFSv4 returns an error for this open(2). While I am not
+sure whether all filesystems who have ->atomic_open() behave like this,
+but NFSv4 surely returns the error.
+
+In order to support ->atomic_open() for aufs, there are a few
+approaches.
+
+A. Introduce aufs_atomic_open()
+   - calls one of VFS:do_last(), lookup_open() or atomic_open() for
+     branch fs.
+B. Introduce aufs_atomic_open() calling create, open and chmod. this is
+   an aufs user Pip Cet's approach
+   - calls aufs_create(), VFS finish_open() and notify_change().
+   - pass fake-mode to finish_open(), and then correct the mode by
+     notify_change().
+C. Extend aufs_open() to call branch fs's ->atomic_open()
+   - no aufs_atomic_open().
+   - aufs_lookup() registers the TID to an aufs internal object.
+   - aufs_create() does nothing when the matching TID is registered, but
+     registers the mode.
+   - aufs_open() calls branch fs's ->atomic_open() when the matching
+     TID is registered.
+D. Extend aufs_open() to re-try branch fs's ->open() with superuser's
+   credential
+   - no aufs_atomic_open().
+   - aufs_create() registers the TID to an internal object. this info
+     represents "this process created this file just now."
+   - when aufs gets EACCES from branch fs's ->open(), then confirm the
+     registered TID and re-try open() with superuser's credential.
+
+Pros and cons for each approach.
+
+A.
+   - straightforward but highly depends upon VFS internal.
+   - the atomic behavaiour is kept.
+   - some of parameters such as nameidata are hard to reproduce for
+     branch fs.
+   - large overhead.
+B.
+   - easy to implement.
+   - the atomic behavaiour is lost.
+C.
+   - the atomic behavaiour is kept.
+   - dirty and tricky.
+   - VFS checks whether the file is created correctly after calling
+     ->create(), which means this approach doesn't work.
+D.
+   - easy to implement.
+   - the atomic behavaiour is lost.
+   - to open a file with superuser's credential and give it to a user
+     process is a bad idea, since the file object keeps the credential
+     in it. It may affect LSM or something. This approach doesn't work
+     either.
+
+The approach A is ideal, but it hard to implement. So here is a
+variation of A, which is to be implemented.
+
+A-1. Introduce aufs_atomic_open()
+     - calls branch fs ->atomic_open() if exists. otherwise calls
+       vfs_create() and finish_open().
+     - the demerit is that the several checks after branch fs
+       ->atomic_open() are lost. in the ordinary case, the checks are
+       done by VFS:do_last(), lookup_open() and atomic_open(). some can
+       be implemented in aufs, but not all I am afraid.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/03lookup.txt b/Documentation/filesystems/aufs/design/03lookup.txt
--- a/Documentation/filesystems/aufs/design/03lookup.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/03lookup.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,113 @@
+
+# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Lookup in a Branch
+----------------------------------------------------------------------
+Since aufs has a character of sub-VFS (see Introduction), it operates
+lookup for branches as VFS does. It may be a heavy work. But almost all
+lookup operation in aufs is the simplest case, ie. lookup only an entry
+directly connected to its parent. Digging down the directory hierarchy
+is unnecessary. VFS has a function lookup_one_len() for that use, and
+aufs calls it.
+
+When a branch is a remote filesystem, aufs basically relies upon its
+->d_revalidate(), also aufs forces the hardest revalidate tests for
+them.
+For d_revalidate, aufs implements three levels of revalidate tests. See
+"Revalidate Dentry and UDBA" in detail.
+
+
+Test Only the Highest One for the Directory Permission (dirperm1 option)
+----------------------------------------------------------------------
+Let's try case study.
+- aufs has two branches, upper readwrite and lower readonly.
+  /au = /rw + /ro
+- "dirA" exists under /ro, but /rw. and its mode is 0700.
+- user invoked "chmod a+rx /au/dirA"
+- the internal copy-up is activated and "/rw/dirA" is created and its
+  permission bits are set to world readable.
+- then "/au/dirA" becomes world readable?
+
+In this case, /ro/dirA is still 0700 since it exists in readonly branch,
+or it may be a natively readonly filesystem. If aufs respects the lower
+branch, it should not respond readdir request from other users. But user
+allowed it by chmod. Should really aufs rejects showing the entries
+under /ro/dirA?
+
+To be honest, I don't have a good solution for this case. So aufs
+implements 'dirperm1' and 'nodirperm1' mount options, and leave it to
+users.
+When dirperm1 is specified, aufs checks only the highest one for the
+directory permission, and shows the entries. Otherwise, as usual, checks
+every dir existing on all branches and rejects the request.
+
+As a side effect, dirperm1 option improves the performance of aufs
+because the number of permission check is reduced when the number of
+branch is many.
+
+
+Revalidate Dentry and UDBA (User's Direct Branch Access)
+----------------------------------------------------------------------
+Generally VFS helpers re-validate a dentry as a part of lookup.
+0. digging down the directory hierarchy.
+1. lock the parent dir by its i_mutex.
+2. lookup the final (child) entry.
+3. revalidate it.
+4. call the actual operation (create, unlink, etc.)
+5. unlock the parent dir
+
+If the filesystem implements its ->d_revalidate() (step 3), then it is
+called. Actually aufs implements it and checks the dentry on a branch is
+still valid.
+But it is not enough. Because aufs has to release the lock for the
+parent dir on a branch at the end of ->lookup() (step 2) and
+->d_revalidate() (step 3) while the i_mutex of the aufs dir is still
+held by VFS.
+If the file on a branch is changed directly, eg. bypassing aufs, after
+aufs released the lock, then the subsequent operation may cause
+something unpleasant result.
+
+This situation is a result of VFS architecture, ->lookup() and
+->d_revalidate() is separated. But I never say it is wrong. It is a good
+design from VFS's point of view. It is just not suitable for sub-VFS
+character in aufs.
+
+Aufs supports such case by three level of revalidation which is
+selectable by user.
+1. Simple Revalidate
+   Addition to the native flow in VFS's, confirm the child-parent
+   relationship on the branch just after locking the parent dir on the
+   branch in the "actual operation" (step 4). When this validation
+   fails, aufs returns EBUSY. ->d_revalidate() (step 3) in aufs still
+   checks the validation of the dentry on branches.
+2. Monitor Changes Internally by Inotify/Fsnotify
+   Addition to above, in the "actual operation" (step 4) aufs re-lookup
+   the dentry on the branch, and returns EBUSY if it finds different
+   dentry.
+   Additionally, aufs sets the inotify/fsnotify watch for every dir on branches
+   during it is in cache. When the event is notified, aufs registers a
+   function to kernel 'events' thread by schedule_work(). And the
+   function sets some special status to the cached aufs dentry and inode
+   private data. If they are not cached, then aufs has nothing to
+   do. When the same file is accessed through aufs (step 0-3) later,
+   aufs will detect the status and refresh all necessary data.
+   In this mode, aufs has to ignore the event which is fired by aufs
+   itself.
+3. No Extra Validation
+   This is the simplest test and doesn't add any additional revalidation
+   test, and skip the revalidation in step 4. It is useful and improves
+   aufs performance when system surely hide the aufs branches from user,
+   by over-mounting something (or another method).
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/04branch.txt b/Documentation/filesystems/aufs/design/04branch.txt
--- a/Documentation/filesystems/aufs/design/04branch.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/04branch.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,74 @@
+
+# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Branch Manipulation
+
+Since aufs supports dynamic branch manipulation, ie. add/remove a branch
+and changing its permission/attribute, there are a lot of works to do.
+
+
+Add a Branch
+----------------------------------------------------------------------
+o Confirm the adding dir exists outside of aufs, including loopback
+  mount, and its various attributes.
+o Initialize the xino file and whiteout bases if necessary.
+  See struct.txt.
+
+o Check the owner/group/mode of the directory
+  When the owner/group/mode of the adding directory differs from the
+  existing branch, aufs issues a warning because it may impose a
+  security risk.
+  For example, when a upper writable branch has a world writable empty
+  top directory, a malicious user can create any files on the writable
+  branch directly, like copy-up and modify manually. If something like
+  /etc/{passwd,shadow} exists on the lower readonly branch but the upper
+  writable branch, and the writable branch is world-writable, then a
+  malicious guy may create /etc/passwd on the writable branch directly
+  and the infected file will be valid in aufs.
+  I am afraid it can be a security issue, but aufs can do nothing except
+  producing a warning.
+
+
+Delete a Branch
+----------------------------------------------------------------------
+o Confirm the deleting branch is not busy
+  To be general, there is one merit to adopt "remount" interface to
+  manipulate branches. It is to discard caches. At deleting a branch,
+  aufs checks the still cached (and connected) dentries and inodes. If
+  there are any, then they are all in-use. An inode without its
+  corresponding dentry can be alive alone (for example, inotify/fsnotify case).
+
+  For the cached one, aufs checks whether the same named entry exists on
+  other branches.
+  If the cached one is a directory, because aufs provides a merged view
+  to users, as long as one dir is left on any branch aufs can show the
+  dir to users. In this case, the branch can be removed from aufs.
+  Otherwise aufs rejects deleting the branch.
+
+  If any file on the deleting branch is opened by aufs, then aufs
+  rejects deleting.
+
+
+Modify the Permission of a Branch
+----------------------------------------------------------------------
+o Re-initialize or remove the xino file and whiteout bases if necessary.
+  See struct.txt.
+
+o rw --> ro: Confirm the modifying branch is not busy
+  Aufs rejects the request if any of these conditions are true.
+  - a file on the branch is mmap-ed.
+  - a regular file on the branch is opened for write and there is no
+    same named entry on the upper branch.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/05wbr_policy.txt b/Documentation/filesystems/aufs/design/05wbr_policy.txt
--- a/Documentation/filesystems/aufs/design/05wbr_policy.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/05wbr_policy.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,64 @@
+
+# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Policies to Select One among Multiple Writable Branches
+----------------------------------------------------------------------
+When the number of writable branch is more than one, aufs has to decide
+the target branch for file creation or copy-up. By default, the highest
+writable branch which has the parent (or ancestor) dir of the target
+file is chosen (top-down-parent policy).
+By user's request, aufs implements some other policies to select the
+writable branch, for file creation several policies, round-robin,
+most-free-space, and other policies. For copy-up, top-down-parent,
+bottom-up-parent, bottom-up and others.
+
+As expected, the round-robin policy selects the branch in circular. When
+you have two writable branches and creates 10 new files, 5 files will be
+created for each branch. mkdir(2) systemcall is an exception. When you
+create 10 new directories, all will be created on the same branch.
+And the most-free-space policy selects the one which has most free
+space among the writable branches. The amount of free space will be
+checked by aufs internally, and users can specify its time interval.
+
+The policies for copy-up is more simple,
+top-down-parent is equivalent to the same named on in create policy,
+bottom-up-parent selects the writable branch where the parent dir
+exists and the nearest upper one from the copyup-source,
+bottom-up selects the nearest upper writable branch from the
+copyup-source, regardless the existence of the parent dir.
+
+There are some rules or exceptions to apply these policies.
+- If there is a readonly branch above the policy-selected branch and
+  the parent dir is marked as opaque (a variation of whiteout), or the
+  target (creating) file is whiteout-ed on the upper readonly branch,
+  then the result of the policy is ignored and the target file will be
+  created on the nearest upper writable branch than the readonly branch.
+- If there is a writable branch above the policy-selected branch and
+  the parent dir is marked as opaque or the target file is whiteouted
+  on the branch, then the result of the policy is ignored and the target
+  file will be created on the highest one among the upper writable
+  branches who has diropq or whiteout. In case of whiteout, aufs removes
+  it as usual.
+- link(2) and rename(2) systemcalls are exceptions in every policy.
+  They try selecting the branch where the source exists as possible
+  since copyup a large file will take long time. If it can't be,
+  ie. the branch where the source exists is readonly, then they will
+  follow the copyup policy.
+- There is an exception for rename(2) when the target exists.
+  If the rename target exists, aufs compares the index of the branches
+  where the source and the target exists and selects the higher
+  one. If the selected branch is readonly, then aufs follows the
+  copyup policy.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/06dirren.dot b/Documentation/filesystems/aufs/design/06dirren.dot
--- a/Documentation/filesystems/aufs/design/06dirren.dot	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/06dirren.dot	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,31 @@
+
+// to view this graph, run dot(1) command in GRAPHVIZ.
+
+digraph G {
+node [shape=box];
+whinfo [label="detailed info file\n(lower_brid_root-hinum, h_inum, namelen, old name)"];
+
+node [shape=oval];
+
+aufs_rename -> whinfo [label="store/remove"];
+
+node [shape=oval];
+inode_list [label="h_inum list in branch\ncache"];
+
+node [shape=box];
+whinode [label="h_inum list file"];
+
+node [shape=oval];
+brmgmt [label="br_add/del/mod/umount"];
+
+brmgmt -> inode_list [label="create/remove"];
+brmgmt -> whinode [label="load/store"];
+
+inode_list -> whinode [style=dashed,dir=both];
+
+aufs_rename -> inode_list [label="add/del"];
+
+aufs_lookup -> inode_list [label="search"];
+
+aufs_lookup -> whinfo [label="load/remove"];
+}
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/06dirren.txt b/Documentation/filesystems/aufs/design/06dirren.txt
--- a/Documentation/filesystems/aufs/design/06dirren.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/06dirren.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,102 @@
+
+# Copyright (C) 2017-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Special handling for renaming a directory (DIRREN)
+----------------------------------------------------------------------
+First, let's assume we have a simple usecase.
+
+- /u = /rw + /ro
+- /rw/dirA exists
+- /ro/dirA and /ro/dirA/file exist too
+- there is no dirB on both branches
+- a user issues rename("dirA", "dirB")
+
+Now, what should aufs behave against this rename(2)?
+There are a few possible cases.
+
+A. returns EROFS.
+   since dirA exists on a readonly branch which cannot be renamed.
+B. returns EXDEV.
+   it is possible to copy-up dirA (only the dir itself), but the child
+   entries ("file" in this case) should not be. it must be a bad
+   approach to copy-up recursively.
+C. returns a success.
+   even the branch /ro is readonly, aufs tries renaming it. Obviously it
+   is a violation of aufs' policy.
+D. construct an extra information which indicates that /ro/dirA should
+   be handled as the name of dirB.
+   overlayfs has a similar feature called REDIRECT.
+
+Until now, aufs implements the case B only which returns EXDEV, and
+expects the userspace application behaves like mv(1) which tries
+issueing rename(2) recursively.
+
+A new aufs feature called DIRREN is introduced which implements the case
+D. There are several "extra information" added.
+
+1. detailed info per renamed directory
+   path: /rw/dirB/$AUFS_WH_DR_INFO_PFX.<lower branch-id>
+2. the inode-number list of directories on a branch
+   path: /rw/dirB/$AUFS_WH_DR_BRHINO
+
+The filename of "detailed info per directory" represents the lower
+branch, and its format is
+- a type of the branch id
+  one of these.
+  + uuid (not implemented yet)
+  + fsid
+  + dev
+- the inode-number of the branch root dir
+
+And it contains these info in a single regular file.
+- magic number
+- branch's inode-number of the logically renamed dir
+- the name of the before-renamed dir
+
+The "detailed info per directory" file is created in aufs rename(2), and
+loaded in any lookup.
+The info is considered in lookup for the matching case only. Here
+"matching" means that the root of branch (in the info filename) is same
+to the current looking-up branch. After looking-up the before-renamed
+name, the inode-number is compared. And the matched dentry is used.
+
+The "inode-number list of directories" is a regular file which contains
+simply the inode-numbers on the branch. The file is created or updated
+in removing the branch, and loaded in adding the branch. Its lifetime is
+equal to the branch.
+The list is refered in lookup, and when the current target inode is
+found in the list, the aufs tries loading the "detailed info per
+directory" and get the changed and valid name of the dir.
+
+Theoretically these "extra informaiton" may be able to be put into XATTR
+in the dir inode. But aufs doesn't choose this way because
+1. XATTR may not be supported by the branch (or its configuration)
+2. XATTR may have its size limit.
+3. XATTR may be less easy to convert than a regular file, when the
+   format of the info is changed in the future.
+At the same time, I agree that the regular file approach is much slower
+than XATTR approach. So, in the future, aufs may take the XATTR or other
+better approach.
+
+This DIRREN feature is enabled by aufs configuration, and is activated
+by a new mount option.
+
+For the more complicated case, there is a work with UDBA option, which
+is to dected the direct access to the branches (by-passing aufs) and to
+maintain the cashes in aufs. Since a single cached aufs dentry may
+contains two names, before- and after-rename, the name comparision in
+UDBA handler may not work correctly. In this case, the behaviour will be
+equivalen to udba=reval case.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/06fhsm.txt b/Documentation/filesystems/aufs/design/06fhsm.txt
--- a/Documentation/filesystems/aufs/design/06fhsm.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/06fhsm.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,120 @@
+
+# Copyright (C) 2011-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+File-based Hierarchical Storage Management (FHSM)
+----------------------------------------------------------------------
+Hierarchical Storage Management (or HSM) is a well-known feature in the
+storage world. Aufs provides this feature as file-based with multiple
+writable branches, based upon the principle of "Colder, the Lower".
+Here the word "colder" means that the less used files, and "lower" means
+that the position in the order of the stacked branches vertically.
+These multiple writable branches are prioritized, ie. the topmost one
+should be the fastest drive and be used heavily.
+
+o Characters in aufs FHSM story
+- aufs itself and a new branch attribute.
+- a new ioctl interface to move-down and to establish a connection with
+  the daemon ("move-down" is a converse of "copy-up").
+- userspace tool and daemon.
+
+The userspace daemon establishes a connection with aufs and waits for
+the notification. The notified information is very similar to struct
+statfs containing the number of consumed blocks and inodes.
+When the consumed blocks/inodes of a branch exceeds the user-specified
+upper watermark, the daemon activates its move-down process until the
+consumed blocks/inodes reaches the user-specified lower watermark.
+
+The actual move-down is done by aufs based upon the request from
+user-space since we need to maintain the inode number and the internal
+pointer arrays in aufs.
+
+Currently aufs FHSM handles the regular files only. Additionally they
+must not be hard-linked nor pseudo-linked.
+
+
+o Cowork of aufs and the user-space daemon
+  During the userspace daemon established the connection, aufs sends a
+  small notification to it whenever aufs writes something into the
+  writable branch. But it may cost high since aufs issues statfs(2)
+  internally. So user can specify a new option to cache the
+  info. Actually the notification is controlled by these factors.
+  + the specified cache time.
+  + classified as "force" by aufs internally.
+  Until the specified time expires, aufs doesn't send the info
+  except the forced cases. When aufs decide forcing, the info is always
+  notified to userspace.
+  For example, the number of free inodes is generally large enough and
+  the shortage of it happens rarely. So aufs doesn't force the
+  notification when creating a new file, directory and others. This is
+  the typical case which aufs doesn't force.
+  When aufs writes the actual filedata and the files consumes any of new
+  blocks, the aufs forces notifying.
+
+
+o Interfaces in aufs
+- New branch attribute.
+  + fhsm
+    Specifies that the branch is managed by FHSM feature. In other word,
+    participant in the FHSM.
+    When nofhsm is set to the branch, it will not be the source/target
+    branch of the move-down operation. This attribute is set
+    independently from coo and moo attributes, and if you want full
+    FHSM, you should specify them as well.
+- New mount option.
+  + fhsm_sec
+    Specifies a second to suppress many less important info to be
+    notified.
+- New ioctl.
+  + AUFS_CTL_FHSM_FD
+    create a new file descriptor which userspace can read the notification
+    (a subset of struct statfs) from aufs.
+- Module parameter 'brs'
+  It has to be set to 1. Otherwise the new mount option 'fhsm' will not
+  be set.
+- mount helpers /sbin/mount.aufs and /sbin/umount.aufs
+  When there are two or more branches with fhsm attributes,
+  /sbin/mount.aufs invokes the user-space daemon and /sbin/umount.aufs
+  terminates it. As a result of remounting and branch-manipulation, the
+  number of branches with fhsm attribute can be one. In this case,
+  /sbin/mount.aufs will terminate the user-space daemon.
+
+
+Finally the operation is done as these steps in kernel-space.
+- make sure that,
+  + no one else is using the file.
+  + the file is not hard-linked.
+  + the file is not pseudo-linked.
+  + the file is a regular file.
+  + the parent dir is not opaqued.
+- find the target writable branch.
+- make sure the file is not whiteout-ed by the upper (than the target)
+  branch.
+- make the parent dir on the target branch.
+- mutex lock the inode on the branch.
+- unlink the whiteout on the target branch (if exists).
+- lookup and create the whiteout-ed temporary name on the target branch.
+- copy the file as the whiteout-ed temporary name on the target branch.
+- rename the whiteout-ed temporary name to the original name.
+- unlink the file on the source branch.
+- maintain the internal pointer array and the external inode number
+  table (XINO).
+- maintain the timestamps and other attributes of the parent dir and the
+  file.
+
+And of course, in every step, an error may happen. So the operation
+should restore the original file state after an error happens.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/06mmap.txt b/Documentation/filesystems/aufs/design/06mmap.txt
--- a/Documentation/filesystems/aufs/design/06mmap.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/06mmap.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,72 @@
+
+# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+mmap(2) -- File Memory Mapping
+----------------------------------------------------------------------
+In aufs, the file-mapped pages are handled by a branch fs directly, no
+interaction with aufs. It means aufs_mmap() calls the branch fs's
+->mmap().
+This approach is simple and good, but there is one problem.
+Under /proc, several entries show the mmapped files by its path (with
+device and inode number), and the printed path will be the path on the
+branch fs's instead of virtual aufs's.
+This is not a problem in most cases, but some utilities lsof(1) (and its
+user) may expect the path on aufs.
+
+To address this issue, aufs adds a new member called vm_prfile in struct
+vm_area_struct (and struct vm_region). The original vm_file points to
+the file on the branch fs in order to handle everything correctly as
+usual. The new vm_prfile points to a virtual file in aufs, and the
+show-functions in procfs refers to vm_prfile if it is set.
+Also we need to maintain several other places where touching vm_file
+such like
+- fork()/clone() copies vma and the reference count of vm_file is
+  incremented.
+- merging vma maintains the ref count too.
+
+This is not a good approach. It just fakes the printed path. But it
+leaves all behaviour around f_mapping unchanged. This is surely an
+advantage.
+Actually aufs had adopted another complicated approach which calls
+generic_file_mmap() and handles struct vm_operations_struct. In this
+approach, aufs met a hard problem and I could not solve it without
+switching the approach.
+
+There may be one more another approach which is
+- bind-mount the branch-root onto the aufs-root internally
+- grab the new vfsmount (ie. struct mount)
+- lazy-umount the branch-root internally
+- in open(2) the aufs-file, open the branch-file with the hidden
+  vfsmount (instead of the original branch's vfsmount)
+- ideally this "bind-mount and lazy-umount" should be done atomically,
+  but it may be possible from userspace by the mount helper.
+
+Adding the internal hidden vfsmount and using it in opening a file, the
+file path under /proc will be printed correctly. This approach looks
+smarter, but is not possible I am afraid.
+- aufs-root may be bind-mount later. when it happens, another hidden
+  vfsmount will be required.
+- it is hard to get the chance to bind-mount and lazy-umount
+  + in kernel-space, FS can have vfsmount in open(2) via
+    file->f_path, and aufs can know its vfsmount. But several locks are
+    already acquired, and if aufs tries to bind-mount and lazy-umount
+    here, then it may cause a deadlock.
+  + in user-space, bind-mount doesn't invoke the mount helper.
+- since /proc shows dev and ino, aufs has to give vma these info. it
+  means a new member vm_prinode will be necessary. this is essentially
+  equivalent to vm_prfile described above.
+
+I have to give up this "looks-smater" approach.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/06xattr.txt b/Documentation/filesystems/aufs/design/06xattr.txt
--- a/Documentation/filesystems/aufs/design/06xattr.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/06xattr.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,96 @@
+
+# Copyright (C) 2014-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+Listing XATTR/EA and getting the value
+----------------------------------------------------------------------
+For the inode standard attributes (owner, group, timestamps, etc.), aufs
+shows the values from the topmost existing file. This behaviour is good
+for the non-dir entries since the bahaviour exactly matches the shown
+information. But for the directories, aufs considers all the same named
+entries on the lower branches. Which means, if one of the lower entry
+rejects readdir call, then aufs returns an error even if the topmost
+entry allows it. This behaviour is necessary to respect the branch fs's
+security, but can make users confused since the user-visible standard
+attributes don't match the behaviour.
+To address this issue, aufs has a mount option called dirperm1 which
+checks the permission for the topmost entry only, and ignores the lower
+entry's permission.
+
+A similar issue can happen around XATTR.
+getxattr(2) and listxattr(2) families behave as if dirperm1 option is
+always set. Otherwise these very unpleasant situation would happen.
+- listxattr(2) may return the duplicated entries.
+- users may not be able to remove or reset the XATTR forever,
+
+
+XATTR/EA support in the internal (copy,move)-(up,down)
+----------------------------------------------------------------------
+Generally the extended attributes of inode are categorized as these.
+- "security" for LSM and capability.
+- "system" for posix ACL, 'acl' mount option is required for the branch
+  fs generally.
+- "trusted" for userspace, CAP_SYS_ADMIN is required.
+- "user" for userspace, 'user_xattr' mount option is required for the
+  branch fs generally.
+
+Moreover there are some other categories. Aufs handles these rather
+unpopular categories as the ordinary ones, ie. there is no special
+condition nor exception.
+
+In copy-up, the support for XATTR on the dst branch may differ from the
+src branch. In this case, the copy-up operation will get an error and
+the original user operation which triggered the copy-up will fail. It
+can happen that even all copy-up will fail.
+When both of src and dst branches support XATTR and if an error occurs
+during copying XATTR, then the copy-up should fail obviously. That is a
+good reason and aufs should return an error to userspace. But when only
+the src branch support that XATTR, aufs should not return an error.
+For example, the src branch supports ACL but the dst branch doesn't
+because the dst branch may natively un-support it or temporary
+un-support it due to "noacl" mount option. Of course, the dst branch fs
+may NOT return an error even if the XATTR is not supported. It is
+totally up to the branch fs.
+
+Anyway when the aufs internal copy-up gets an error from the dst branch
+fs, then aufs tries removing the just copied entry and returns the error
+to the userspace. The worst case of this situation will be all copy-up
+will fail.
+
+For the copy-up operation, there two basic approaches.
+- copy the specified XATTR only (by category above), and return the
+  error unconditionally if it happens.
+- copy all XATTR, and ignore the error on the specified category only.
+
+In order to support XATTR and to implement the correct behaviour, aufs
+chooses the latter approach and introduces some new branch attributes,
+"icexsec", "icexsys", "icextr", "icexusr", and "icexoth".
+They correspond to the XATTR namespaces (see above). Additionally, to be
+convenient, "icex" is also provided which means all "icex*" attributes
+are set (here the word "icex" stands for "ignore copy-error on XATTR").
+
+The meaning of these attributes is to ignore the error from setting
+XATTR on that branch.
+Note that aufs tries copying all XATTR unconditionally, and ignores the
+error from the dst branch according to the specified attributes.
+
+Some XATTR may have its default value. The default value may come from
+the parent dir or the environment. If the default value is set at the
+file creating-time, it will be overwritten by copy-up.
+Some contradiction may happen I am afraid.
+Do we need another attribute to stop copying XATTR? I am unsure. For
+now, aufs implements the branch attributes to ignore the error.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/07export.txt b/Documentation/filesystems/aufs/design/07export.txt
--- a/Documentation/filesystems/aufs/design/07export.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/07export.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,58 @@
+
+# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Export Aufs via NFS
+----------------------------------------------------------------------
+Here is an approach.
+- like xino/xib, add a new file 'xigen' which stores aufs inode
+  generation.
+- iget_locked(): initialize aufs inode generation for a new inode, and
+  store it in xigen file.
+- destroy_inode(): increment aufs inode generation and store it in xigen
+  file. it is necessary even if it is not unlinked, because any data of
+  inode may be changed by UDBA.
+- encode_fh(): for a root dir, simply return FILEID_ROOT. otherwise
+  build file handle by
+  + branch id (4 bytes)
+  + superblock generation (4 bytes)
+  + inode number (4 or 8 bytes)
+  + parent dir inode number (4 or 8 bytes)
+  + inode generation (4 bytes))
+  + return value of exportfs_encode_fh() for the parent on a branch (4
+    bytes)
+  + file handle for a branch (by exportfs_encode_fh())
+- fh_to_dentry():
+  + find the index of a branch from its id in handle, and check it is
+    still exist in aufs.
+  + 1st level: get the inode number from handle and search it in cache.
+  + 2nd level: if not found in cache, get the parent inode number from
+    the handle and search it in cache. and then open the found parent
+    dir, find the matching inode number by vfs_readdir() and get its
+    name, and call lookup_one_len() for the target dentry.
+  + 3rd level: if the parent dir is not cached, call
+    exportfs_decode_fh() for a branch and get the parent on a branch,
+    build a pathname of it, convert it a pathname in aufs, call
+    path_lookup(). now aufs gets a parent dir dentry, then handle it as
+    the 2nd level.
+  + to open the dir, aufs needs struct vfsmount. aufs keeps vfsmount
+    for every branch, but not itself. to get this, (currently) aufs
+    searches in current->nsproxy->mnt_ns list. it may not be a good
+    idea, but I didn't get other approach.
+  + test the generation of the gotten inode.
+- every inode operation: they may get EBUSY due to UDBA. in this case,
+  convert it into ESTALE for NFSD.
+- readdir(): call lockdep_on/off() because filldir in NFSD calls
+  lookup_one_len(), vfs_getattr(), encode_fh() and others.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/08shwh.txt b/Documentation/filesystems/aufs/design/08shwh.txt
--- a/Documentation/filesystems/aufs/design/08shwh.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/08shwh.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,52 @@
+
+# Copyright (C) 2005-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Show Whiteout Mode (shwh)
+----------------------------------------------------------------------
+Generally aufs hides the name of whiteouts. But in some cases, to show
+them is very useful for users. For instance, creating a new middle layer
+(branch) by merging existing layers.
+
+(borrowing aufs1 HOW-TO from a user, Michael Towers)
+When you have three branches,
+- Bottom: 'system', squashfs (underlying base system), read-only
+- Middle: 'mods', squashfs, read-only
+- Top: 'overlay', ram (tmpfs), read-write
+
+The top layer is loaded at boot time and saved at shutdown, to preserve
+the changes made to the system during the session.
+When larger changes have been made, or smaller changes have accumulated,
+the size of the saved top layer data grows. At this point, it would be
+nice to be able to merge the two overlay branches ('mods' and 'overlay')
+and rewrite the 'mods' squashfs, clearing the top layer and thus
+restoring save and load speed.
+
+This merging is simplified by the use of another aufs mount, of just the
+two overlay branches using the 'shwh' option.
+# mount -t aufs -o ro,shwh,br:/livesys/overlay=ro+wh:/livesys/mods=rr+wh \
+	aufs /livesys/merge_union
+
+A merged view of these two branches is then available at
+/livesys/merge_union, and the new feature is that the whiteouts are
+visible!
+Note that in 'shwh' mode the aufs mount must be 'ro', which will disable
+writing to all branches. Also the default mode for all branches is 'ro'.
+It is now possible to save the combined contents of the two overlay
+branches to a new squashfs, e.g.:
+# mksquashfs /livesys/merge_union /path/to/newmods.squash
+
+This new squashfs archive can be stored on the boot device and the
+initramfs will use it to replace the old one at the next boot.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/design/10dynop.txt b/Documentation/filesystems/aufs/design/10dynop.txt
--- a/Documentation/filesystems/aufs/design/10dynop.txt	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/design/10dynop.txt	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,47 @@
+
+# Copyright (C) 2010-2021 Junjiro R. Okajima
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Dynamically customizable FS operations
+----------------------------------------------------------------------
+Generally FS operations (struct inode_operations, struct
+address_space_operations, struct file_operations, etc.) are defined as
+"static const", but it never means that FS have only one set of
+operation. Some FS have multiple sets of them. For instance, ext2 has
+three sets, one for XIP, for NOBH, and for normal.
+Since aufs overrides and redirects these operations, sometimes aufs has
+to change its behaviour according to the branch FS type. More importantly
+VFS acts differently if a function (member in the struct) is set or
+not. It means aufs should have several sets of operations and select one
+among them according to the branch FS definition.
+
+In order to solve this problem and not to affect the behaviour of VFS,
+aufs defines these operations dynamically. For instance, aufs defines
+dummy direct_IO function for struct address_space_operations, but it may
+not be set to the address_space_operations actually. When the branch FS
+doesn't have it, aufs doesn't set it to its address_space_operations
+while the function definition itself is still alive. So the behaviour
+itself will not change, and it will return an error when direct_IO is
+not set.
+
+The lifetime of these dynamically generated operation object is
+maintained by aufs branch object. When the branch is removed from aufs,
+the reference counter of the object is decremented. When it reaches
+zero, the dynamically generated operation object will be freed.
+
+This approach is designed to support AIO (io_submit), Direct I/O and
+XIP (DAX) mainly.
+Currently this approach is applied to address_space_operations for
+regular files only.
diff -Naur --no-dereference a/Documentation/filesystems/aufs/README b/Documentation/filesystems/aufs/README
--- a/Documentation/filesystems/aufs/README	1969-12-31 19:00:00.000000000 -0500
+++ b/Documentation/filesystems/aufs/README	2022-06-12 13:07:42.547111701 -0400
@@ -0,0 +1,397 @@
+
+Aufs5 -- advanced multi layered unification filesystem version 5.x
+http://aufs.sf.net
+Junjiro R. Okajima
+
+
+0. Introduction
+----------------------------------------
+In the early days, aufs was entirely re-designed and re-implemented
+Unionfs Version 1.x series. Adding many original ideas, approaches,
+improvements and implementations, it became totally different from
+Unionfs while keeping the basic features.
+Later, Unionfs Version 2.x series began taking some of the same
+approaches to aufs1's.
+Unionfs was being developed by Professor Erez Zadok at Stony Brook
+University and his team.
+
+Aufs5 supports linux-v5.0 and later, If you want older kernel version
+support,
+- for linux-v4.x series, try aufs4-linux.git or aufs4-standalone.git
+- for linux-v3.x series, try aufs3-linux.git or aufs3-standalone.git
+- for linux-v2.6.16 and later, try aufs2-2.6.git, aufs2-standalone.git
+  or aufs1 from CVS on SourceForge.
+
+Note: it becomes clear that "Aufs was rejected. Let's give it up."
+      According to Christoph Hellwig, linux rejects all union-type
+      filesystems but UnionMount.
+<http://marc.info/?l=linux-kernel&m=123938533724484&w=2>
+
+PS. Al Viro seems have a plan to merge aufs as well as overlayfs and
+    UnionMount, and he pointed out an issue around a directory mutex
+    lock and aufs addressed it. But it is still unsure whether aufs will
+    be merged (or any other union solution).
+<http://marc.info/?l=linux-kernel&m=136312705029295&w=1>
+
+
+1. Features
+----------------------------------------
+- unite several directories into a single virtual filesystem. The member
+  directory is called as a branch.
+- you can specify the permission flags to the branch, which are 'readonly',
+  'readwrite' and 'whiteout-able.'
+- by upper writable branch, internal copyup and whiteout, files/dirs on
+  readonly branch are modifiable logically.
+- dynamic branch manipulation, add, del.
+- etc...
+
+Also there are many enhancements in aufs, such as:
+- test only the highest one for the directory permission (dirperm1)
+- copyup on open (coo=)
+- 'move' policy for copy-up between two writable branches, after
+  checking free space.
+- xattr, acl
+- readdir(3) in userspace.
+- keep inode number by external inode number table
+- keep the timestamps of file/dir in internal copyup operation
+- seekable directory, supporting NFS readdir.
+- whiteout is hardlinked in order to reduce the consumption of inodes
+  on branch
+- do not copyup, nor create a whiteout when it is unnecessary
+- revert a single systemcall when an error occurs in aufs
+- remount interface instead of ioctl
+- maintain /etc/mtab by an external command, /sbin/mount.aufs.
+- loopback mounted filesystem as a branch
+- kernel thread for removing the dir who has a plenty of whiteouts
+- support copyup sparse file (a file which has a 'hole' in it)
+- default permission flags for branches
+- selectable permission flags for ro branch, whether whiteout can
+  exist or not
+- export via NFS.
+- support <sysfs>/fs/aufs and <debugfs>/aufs.
+- support multiple writable branches, some policies to select one
+  among multiple writable branches.
+- a new semantics for link(2) and rename(2) to support multiple
+  writable branches.
+- no glibc changes are required.
+- pseudo hardlink (hardlink over branches)
+- allow a direct access manually to a file on branch, e.g. bypassing aufs.
+  including NFS or remote filesystem branch.
+- userspace wrapper for pathconf(3)/fpathconf(3) with _PC_LINK_MAX.
+- and more...
+
+Currently these features are dropped temporary from aufs5.
+See design/08plan.txt in detail.
+- nested mount, i.e. aufs as readonly no-whiteout branch of another aufs
+  (robr)
+- statistics of aufs thread (/sys/fs/aufs/stat)
+
+Features or just an idea in the future (see also design/*.txt),
+- reorder the branch index without del/re-add.
+- permanent xino files for NFSD
+- an option for refreshing the opened files after add/del branches
+- light version, without branch manipulation. (unnecessary?)
+- copyup in userspace
+- inotify in userspace
+- readv/writev
+
+
+2. Download
+----------------------------------------
+There are three GIT trees for aufs5, aufs5-linux.git,
+aufs5-standalone.git, and aufs-util.git. Note that there is no "5" in
+"aufs-util.git."
+While the aufs-util is always necessary, you need either of aufs5-linux
+or aufs5-standalone.
+
+The aufs5-linux tree includes the whole linux mainline GIT tree,
+git://git.kernel.org/.../torvalds/linux.git.
+And you cannot select CONFIG_AUFS_FS=m for this version, eg. you cannot
+build aufs5 as an external kernel module.
+Several extra patches are not included in this tree. Only
+aufs5-standalone tree contains them. They are described in the later
+section "Configuration and Compilation."
+
+On the other hand, the aufs5-standalone tree has only aufs source files
+and necessary patches, and you can select CONFIG_AUFS_FS=m.
+But you need to apply all aufs patches manually.
+
+You will find GIT branches whose name is in form of "aufs5.x" where "x"
+represents the linux kernel version, "linux-5.x". For instance,
+"aufs5.0" is for linux-5.0. For latest "linux-5.x-rcN", use
+"aufs5.x-rcN" branch.
+
+o aufs5-linux tree
+$ git clone --reference /your/linux/git/tree \
+	git://github.com/sfjro/aufs5-linux.git aufs5-linux.git
+- if you don't have linux GIT tree, then remove "--reference ..."
+$ cd aufs5-linux.git
+$ git checkout origin/aufs5.0
+
+Or You may want to directly git-pull aufs into your linux GIT tree, and
+leave the patch-work to GIT.
+$ cd /your/linux/git/tree
+$ git remote add aufs5 git://github.com/sfjro/aufs5-linux.git
+$ git fetch aufs5
+$ git checkout -b my5.0 v5.0
+$ (add your local change...)
+$ git pull aufs5 aufs5.0
+- now you have v5.0 + your_changes + aufs5.0 in you my5.0 branch.
+- you may need to solve some conflicts between your_changes and
+  aufs5.0. in this case, git-rerere is recommended so that you can
+  solve the similar conflicts automatically when you upgrade to 5.1 or
+  later in the future.
+
+o aufs5-standalone tree
+$ git clone git://github.com/sfjro/aufs5-standalone.git aufs5-standalone.git
+$ cd aufs5-standalone.git
+$ git checkout origin/aufs5.0
+
+o aufs-util tree
+$ git clone git://git.code.sf.net/p/aufs/aufs-util aufs-util.git
+- note that the public aufs-util.git is on SourceForge instead of
+  GitHUB.
+$ cd aufs-util.git
+$ git checkout origin/aufs5.0
+
+Note: The 5.x-rcN branch is to be used with `rc' kernel versions ONLY.
+The minor version number, 'x' in '5.x', of aufs may not always
+follow the minor version number of the kernel.
+Because changes in the kernel that cause the use of a new
+minor version number do not always require changes to aufs-util.
+
+Since aufs-util has its own minor version number, you may not be
+able to find a GIT branch in aufs-util for your kernel's
+exact minor version number.
+In this case, you should git-checkout the branch for the
+nearest lower number.
+
+For (an unreleased) example:
+If you are using "linux-5.10" and the "aufs5.10" branch
+does not exist in aufs-util repository, then "aufs5.9", "aufs5.8"
+or something numerically smaller is the branch for your kernel.
+
+Also you can view all branches by
+	$ git branch -a
+
+
+3. Configuration and Compilation
+----------------------------------------
+Make sure you have git-checkout'ed the correct branch.
+
+For aufs5-linux tree,
+- enable CONFIG_AUFS_FS.
+- set other aufs configurations if necessary.
+- for aufs5.13 and later
+  Because aufs is not only an ordinary filesystem (callee of VFS), but
+  also a caller of VFS functions for branch filesystems, subclassing of
+  the internal locks for LOCKDEP is necessary. LOCKDEP is a debugging
+  feature of linux kernel. If you enable CONFIG_LOCKDEP, then you will
+  need to customize some LOCKDEP numbers. Here are what I use on my
+  test environment.
+	CONFIG_LOCKDEP_BITS=21
+	CONFIG_LOCKDEP_CHAINS_BITS=21
+	CONFIG_LOCKDEP_STACK_TRACE_BITS=24
+
+For aufs5-standalone tree,
+There are several ways to build.
+
+1.
+- apply ./aufs5-kbuild.patch to your kernel source files.
+- apply ./aufs5-base.patch too.
+- apply ./aufs5-mmap.patch too.
+- apply ./aufs5-standalone.patch too, if you have a plan to set
+  CONFIG_AUFS_FS=m. otherwise you don't need ./aufs5-standalone.patch.
+- copy ./{Documentation,fs,include/uapi/linux/aufs_type.h} files to your
+  kernel source tree. Never copy $PWD/include/uapi/linux/Kbuild.
+- enable CONFIG_AUFS_FS, you can select either
+  =m or =y.
+- and build your kernel as usual.
+- install the built kernel.
+- install the header files too by "make headers_install" to the
+  directory where you specify. By default, it is $PWD/usr.
+  "make help" shows a brief note for headers_install.
+- and reboot your system.
+
+2.
+- module only (CONFIG_AUFS_FS=m).
+- apply ./aufs5-base.patch to your kernel source files.
+- apply ./aufs5-mmap.patch too.
+- apply ./aufs5-standalone.patch too.
+- build your kernel, don't forget "make headers_install", and reboot.
+- edit ./config.mk and set other aufs configurations if necessary.
+  Note: You should read $PWD/fs/aufs/Kconfig carefully which describes
+  every aufs configurations.
+- build the module by simple "make".
+- you can specify ${KDIR} make variable which points to your kernel
+  source tree.
+- install the files
+  + run "make install" to install the aufs module, or copy the built
+    $PWD/aufs.ko to /lib/modules/... and run depmod -a (or reboot simply).
+  + run "make install_headers" (instead of headers_install) to install
+    the modified aufs header file (you can specify DESTDIR which is
+    available in aufs standalone version's Makefile only), or copy
+    $PWD/usr/include/linux/aufs_type.h to /usr/include/linux or wherever
+    you like manually. By default, the target directory is $PWD/usr.
+- no need to apply aufs5-kbuild.patch, nor copying source files to your
+  kernel source tree.
+
+Note: The header file aufs_type.h is necessary to build aufs-util
+      as well as "make headers_install" in the kernel source tree.
+      headers_install is subject to be forgotten, but it is essentially
+      necessary, not only for building aufs-util.
+      You may not meet problems without headers_install in some older
+      version though.
+
+And then,
+- read README in aufs-util, build and install it
+- note that your distribution may contain an obsoleted version of
+  aufs_type.h in /usr/include/linux or something. When you build aufs
+  utilities, make sure that your compiler refers the correct aufs header
+  file which is built by "make headers_install."
+- if you want to use readdir(3) in userspace or pathconf(3) wrapper,
+  then run "make install_ulib" too. And refer to the aufs manual in
+  detail.
+
+There several other patches in aufs5-standalone.git. They are all
+optional. When you meet some problems, they will help you.
+- aufs5-loopback.patch
+  Supports a nested loopback mount in a branch-fs. This patch is
+  unnecessary until aufs produces a message like "you may want to try
+  another patch for loopback file".
+- vfs-ino.patch
+  Modifies a system global kernel internal function get_next_ino() in
+  order to stop assigning 0 for an inode-number. Not directly related to
+  aufs, but recommended generally.
+- tmpfs-idr.patch
+  Keeps the tmpfs inode number as the lowest value. Effective to reduce
+  the size of aufs XINO files for tmpfs branch. Also it prevents the
+  duplication of inode number, which is important for backup tools and
+  other utilities. When you find aufs XINO files for tmpfs branch
+  growing too much, try this patch.
+
+
+4. Usage
+----------------------------------------
+At first, make sure aufs-util are installed, and please read the aufs
+manual, aufs.5 in aufs-util.git tree.
+$ man -l aufs.5
+
+And then,
+$ mkdir /tmp/rw /tmp/aufs
+# mount -t aufs -o br=/tmp/rw:${HOME} none /tmp/aufs
+
+Here is another example. The result is equivalent.
+# mount -t aufs -o br=/tmp/rw=rw:${HOME}=ro none /tmp/aufs
+  Or
+# mount -t aufs -o br:/tmp/rw none /tmp/aufs
+# mount -o remount,append:${HOME} /tmp/aufs
+
+Then, you can see whole tree of your home dir through /tmp/aufs. If
+you modify a file under /tmp/aufs, the one on your home directory is
+not affected, instead the same named file will be newly created under
+/tmp/rw. And all of your modification to a file will be applied to
+the one under /tmp/rw. This is called the file based Copy on Write
+(COW) method.
+Aufs mount options are described in aufs.5.
+If you run chroot or something and make your aufs as a root directory,
+then you need to customize the shutdown script. See the aufs manual in
+detail.
+
+Additionally, there are some sample usages of aufs which are a
+diskless system with network booting, and LiveCD over NFS.
+See sample dir in CVS tree on SourceForge.
+
+
+5. Contact
+----------------------------------------
+When you have any problems or strange behaviour in aufs, please let me
+know with:
+- /proc/mounts (instead of the output of mount(8))
+- /sys/module/aufs/*
+- /sys/fs/aufs/* (if you have them)
+- /debug/aufs/* (if you have them)
+- linux kernel version
+  if your kernel is not plain, for example modified by distributor,
+  the url where i can download its source is necessary too.
+- aufs version which was printed at loading the module or booting the
+  system, instead of the date you downloaded.
+- configuration (define/undefine CONFIG_AUFS_xxx)
+- kernel configuration or /proc/config.gz (if you have it)
+- LSM (linux security module, if you are using)
+- behaviour which you think to be incorrect
+- actual operation, reproducible one is better
+- mailto: aufs-users at lists.sourceforge.net
+
+Usually, I don't watch the Public Areas(Bugs, Support Requests, Patches,
+and Feature Requests) on SourceForge. Please join and write to
+aufs-users ML.
+
+
+6. Acknowledgements
+----------------------------------------
+Thanks to everyone who have tried and are using aufs, whoever
+have reported a bug or any feedback.
+
+Especially donators:
+Tomas Matejicek(slax.org) made a donation (much more than once).
+	Since Apr 2010, Tomas M (the author of Slax and Linux Live
+	scripts) is making "doubling" donations.
+	Unfortunately I cannot list all of the donators, but I really
+	appreciate.
+	It ends Aug 2010, but the ordinary donation URL is still available.
+	<http://sourceforge.net/donate/index.php?group_id=167503>
+Dai Itasaka made a donation (2007/8).
+Chuck Smith made a donation (2008/4, 10 and 12).
+Henk Schoneveld made a donation (2008/9).
+Chih-Wei Huang, ASUS, CTC donated Eee PC 4G (2008/10).
+Francois Dupoux made a donation (2008/11).
+Bruno Cesar Ribas and Luis Carlos Erpen de Bona, C3SL serves public
+	aufs2 GIT tree (2009/2).
+William Grant made a donation (2009/3).
+Patrick Lane made a donation (2009/4).
+The Mail Archive (mail-archive.com) made donations (2009/5).
+Nippy Networks (Ed Wildgoose) made a donation (2009/7).
+New Dream Network, LLC (www.dreamhost.com) made a donation (2009/11).
+Pavel Pronskiy made a donation (2011/2).
+Iridium and Inmarsat satellite phone retailer (www.mailasail.com), Nippy
+	Networks (Ed Wildgoose) made a donation for hardware (2011/3).
+Max Lekomcev (DOM-TV project) made a donation (2011/7, 12, 2012/3, 6 and
+11).
+Sam Liddicott made a donation (2011/9).
+Era Scarecrow made a donation (2013/4).
+Bor Ratajc made a donation (2013/4).
+Alessandro Gorreta made a donation (2013/4).
+POIRETTE Marc made a donation (2013/4).
+Alessandro Gorreta made a donation (2013/4).
+lauri kasvandik made a donation (2013/5).
+"pemasu from Finland" made a donation (2013/7).
+The Parted Magic Project made a donation (2013/9 and 11).
+Pavel Barta made a donation (2013/10).
+Nikolay Pertsev made a donation (2014/5).
+James B made a donation (2014/7, 2015/7, and 2021/12).
+Stefano Di Biase made a donation (2014/8).
+Daniel Epellei made a donation (2015/1).
+OmegaPhil made a donation (2016/1, 2018/4).
+Tomasz Szewczyk made a donation (2016/4).
+James Burry made a donation (2016/12).
+Carsten Rose made a donation (2018/9).
+Porteus Kiosk made a donation (2018/10).
+Enya Quetzalli Gomez Rodriguez made a donation (2022/5).
+
+Thank you very much.
+Donations are always, including future donations, very important and
+helpful for me to keep on developing aufs.
+
+
+7.
+----------------------------------------
+If you are an experienced user, no explanation is needed. Aufs is
+just a linux filesystem.
+
+
+Enjoy!
+
+# Local variables: ;
+# mode: text;
+# End: ;
diff -Naur --no-dereference a/drivers/block/loop.c b/drivers/block/loop.c
--- a/drivers/block/loop.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/block/loop.c	2022-06-12 13:07:42.551111715 -0400
@@ -799,6 +799,24 @@
 	return error;
 }
 
+/*
+ * for AUFS
+ * no get/put for file.
+ */
+struct file *loop_backing_file(struct super_block *sb)
+{
+	struct file *ret;
+	struct loop_device *l;
+
+	ret = NULL;
+	if (MAJOR(sb->s_dev) == LOOP_MAJOR) {
+		l = sb->s_bdev->bd_disk->private_data;
+		ret = l->lo_backing_file;
+	}
+	return ret;
+}
+EXPORT_SYMBOL_GPL(loop_backing_file);
+
 /* loop sysfs attributes */
 
 static ssize_t loop_attr_show(struct device *dev, char *page,
diff -Naur --no-dereference a/drivers/gnss/serial.c b/drivers/gnss/serial.c
--- a/drivers/gnss/serial.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/gnss/serial.c	2022-06-12 13:07:42.551111715 -0400
@@ -110,10 +110,9 @@
 static int gnss_serial_parse_dt(struct serdev_device *serdev)
 {
 	struct gnss_serial *gserial = serdev_device_get_drvdata(serdev);
-	struct device_node *node = serdev->dev.of_node;
 	u32 speed = 4800;
 
-	of_property_read_u32(node, "current-speed", &speed);
+	device_property_read_u32(&serdev->dev, "current-speed", &speed);
 
 	gserial->speed = speed;
 
diff -Naur --no-dereference a/drivers/gnss/ubx.c b/drivers/gnss/ubx.c
--- a/drivers/gnss/ubx.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/gnss/ubx.c	2022-06-12 13:07:42.551111715 -0400
@@ -138,6 +138,14 @@
 MODULE_DEVICE_TABLE(of, ubx_of_match);
 #endif
 
+static const struct serdev_device_id ubx_serdev_id[] = {
+	{ "neo-6m", },
+	{ "neo-8", },
+	{ "neo-m8", },
+	{}
+};
+MODULE_DEVICE_TABLE(serdev, ubx_serdev_id);
+
 static struct serdev_device_driver ubx_driver = {
 	.driver	= {
 		.name		= "gnss-ubx",
@@ -146,6 +154,7 @@
 	},
 	.probe	= ubx_probe,
 	.remove	= ubx_remove,
+	.id_table = ubx_serdev_id,
 };
 module_serdev_device_driver(ubx_driver);
 
diff -Naur --no-dereference a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
--- a/drivers/gpio/gpiolib.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/gpio/gpiolib.c	2022-06-12 13:07:42.551111715 -0400
@@ -1874,9 +1874,9 @@
 
 	if (test_and_set_bit(FLAG_REQUESTED, &desc->flags) == 0) {
 		desc_set_label(desc, label ? : "?");
-	} else {
-		ret = -EBUSY;
-		goto out_free_unlock;
+//	} else {
+//		ret = -EBUSY;
+//		goto out_free_unlock;
 	}
 
 	if (gc->request) {
diff -Naur --no-dereference a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c
--- a/drivers/gpio/gpiolib-sysfs.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/gpio/gpiolib-sysfs.c	2022-06-12 13:07:42.551111715 -0400
@@ -38,10 +38,10 @@
 /*
  * /sys/class/gpio/gpioN... only for GPIOs that are exported
  *   /direction
- *      * MAY BE OMITTED if kernel won't allow direction changes
  *      * is read/write as "in" or "out"
  *      * may also be written as "high" or "low", initializing
  *        output value as specified ("out" implies "low")
+ *      * read-only if kernel won't allow direction changes
  *   /value
  *      * always readable, subject to hardware behavior
  *      * may be writable, as zero/nonzero
@@ -54,6 +54,8 @@
  *      * is read/write as zero/nonzero
  *      * also affects existing and subsequent "falling" and "rising"
  *        /edge configuration
+ *   /label
+ *      * descriptor label
  */
 
 static ssize_t direction_show(struct device *dev,
@@ -83,7 +85,9 @@
 
 	mutex_lock(&data->mutex);
 
-	if (sysfs_streq(buf, "high"))
+	if (!data->direction_can_change)
+		status = -EPERM;
+	else if (sysfs_streq(buf, "high"))
 		status = gpiod_direction_output_raw(desc, 1);
 	else if (sysfs_streq(buf, "out") || sysfs_streq(buf, "low"))
 		status = gpiod_direction_output_raw(desc, 0);
@@ -355,6 +359,23 @@
 }
 static DEVICE_ATTR_RW(active_low);
 
+static ssize_t label_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct gpiod_data *data = dev_get_drvdata(dev);
+	struct gpio_desc *desc = data->desc;
+	ssize_t			status;
+
+	mutex_lock(&data->mutex);
+
+	status = sprintf(buf, "%s\n", desc->label);
+
+	mutex_unlock(&data->mutex);
+
+	return status;
+}
+static DEVICE_ATTR_RO(label);
+
 static umode_t gpio_is_visible(struct kobject *kobj, struct attribute *attr,
 			       int n)
 {
@@ -366,12 +387,15 @@
 
 	if (attr == &dev_attr_direction.attr) {
 		if (!show_direction)
-			mode = 0;
+			mode &= 0444;
 	} else if (attr == &dev_attr_edge.attr) {
 		if (gpiod_to_irq(desc) < 0)
 			mode = 0;
 		if (!show_direction && test_bit(FLAG_IS_OUT, &desc->flags))
 			mode = 0;
+	} else if (attr == &dev_attr_value.attr) {
+		if (!show_direction && !test_bit(FLAG_IS_OUT, &desc->flags))
+			mode &= 0444;
 	}
 
 	return mode;
@@ -382,6 +406,7 @@
 	&dev_attr_edge.attr,
 	&dev_attr_value.attr,
 	&dev_attr_active_low.attr,
+	&dev_attr_label.attr,
 	NULL,
 };
 
@@ -395,6 +420,10 @@
 	NULL
 };
 
+/* bwlegh, a second device in the same file... get out of my namespace! */
+#define dev_attr_label dev_attr_chip_label
+#define label_show chip_label_show
+
 /*
  * /sys/class/gpio/gpiochipN/
  *   /base ... matching gpio_chip.base (N)
diff -Naur --no-dereference a/drivers/gpio/gpio-of-helper.c b/drivers/gpio/gpio-of-helper.c
--- a/drivers/gpio/gpio-of-helper.c	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/gpio/gpio-of-helper.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,422 @@
+/*
+ * GPIO OF based helper
+ *
+ * A simple DT based driver to provide access to GPIO functionality
+ * to user-space via sysfs.
+ *
+ * Copyright (C) 2013 Pantelis Antoniou <panto@antoniou-consulting.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/atomic.h>
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/math64.h>
+#include <linux/atomic.h>
+#include <linux/idr.h>
+
+/* fwd decl. */
+struct gpio_of_helper_info;
+
+enum gpio_type {
+	GPIO_TYPE_INPUT = 0,
+	GPIO_TYPE_OUTPUT = 1,
+};
+
+struct gpio_of_entry {
+	int id;
+	struct gpio_of_helper_info *info;
+	struct device_node *node;
+	enum gpio_type type;
+	int gpio;
+	int irq;
+	const char *name;
+	atomic64_t counter;
+	unsigned int count_flags;
+#define COUNT_RISING_EDGE	(1 << 0)
+#define COUNT_FALLING_EDGE	(1 << 1)
+};
+
+struct gpio_of_helper_info {
+	struct platform_device *pdev;
+	struct idr idr;
+};
+
+static const struct of_device_id gpio_of_helper_of_match[] = {
+	{
+		.compatible = "gpio-of-helper",
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, gpio_of_helper_of_match);
+
+static ssize_t gpio_of_helper_show_status(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct gpio_of_helper_info *info = platform_get_drvdata(pdev);
+	struct gpio_of_entry *entry;
+	char *p, *e;
+	int id, n;
+
+	p = buf;
+	e = p + PAGE_SIZE;
+	n = 0;
+	idr_for_each_entry(&info->idr, entry, id) {
+		switch (entry->type) {
+		case GPIO_TYPE_INPUT:
+			n = snprintf(p, e - p, "%2d %-24s %3d %-3s %llu\n",
+				entry->id, entry->name, entry->gpio, "IN",
+				(unsigned long long)
+					atomic64_read(&entry->counter));
+			break;
+		case GPIO_TYPE_OUTPUT:
+			n = snprintf(p, e - p, "%2d %-24s %3d %-3s\n",
+				entry->id, entry->name, entry->gpio, "OUT");
+			break;
+		}
+		p += n;
+	}
+
+	return p - buf;
+}
+
+static DEVICE_ATTR(status, S_IRUGO,
+		gpio_of_helper_show_status, NULL);
+
+static irqreturn_t gpio_of_helper_handler(int irq, void *ptr)
+{
+	struct gpio_of_entry *entry = ptr;
+
+	/* caution - low speed interfaces only! */
+	atomic64_inc(&entry->counter);
+
+	return IRQ_HANDLED;
+}
+
+static struct gpio_of_entry *
+gpio_of_entry_create(struct gpio_of_helper_info *info,
+		struct device_node *node)
+{
+	struct platform_device *pdev = info->pdev;
+	struct device *dev = &pdev->dev;
+	struct gpio_of_entry *entry;
+	int err, gpio, irq;
+	unsigned int req_flags, count_flags, irq_flags;
+	enum gpio_type type;
+	enum of_gpio_flags gpio_flags;
+	const char *name;
+
+	/* get the type of the node first */
+	if (of_property_read_bool(node, "input"))
+		type = GPIO_TYPE_INPUT;
+	else if (of_property_read_bool(node, "output")
+			|| of_property_read_bool(node, "init-low")
+			|| of_property_read_bool(node, "init-high"))
+		type = GPIO_TYPE_OUTPUT;
+	else {
+		dev_err(dev, "Not valid gpio node type\n");
+		err = -EINVAL;
+		goto err_bad_node;
+	}
+
+	/* get the name */
+	if (of_property_read_string(node, "line-name", &name))
+		if (of_property_read_string(node, "gpio-name", &name))
+			name = node->name;
+
+	err = of_get_named_gpio_flags(node, "gpio", 0, &gpio_flags);
+	if (IS_ERR_VALUE(err)) {
+		dev_err(dev, "Failed to get gpio property of '%s'\n", name);
+		goto err_bad_node;
+	}
+	gpio = err;
+
+	req_flags = 0;
+	count_flags = 0;
+
+	/* set the request flags */
+	switch (type) {
+		case GPIO_TYPE_INPUT:
+			req_flags = GPIOF_DIR_IN | GPIOF_EXPORT;
+			if (of_property_read_bool(node, "count-falling-edge"))
+				count_flags |= COUNT_FALLING_EDGE;
+			if (of_property_read_bool(node, "count-rising-edge"))
+				count_flags |= COUNT_RISING_EDGE;
+			break;
+		case GPIO_TYPE_OUTPUT:
+			req_flags = GPIOF_DIR_OUT | GPIOF_EXPORT;
+			if (of_property_read_bool(node, "init-high"))
+				req_flags |= GPIOF_OUT_INIT_HIGH;
+			else if (of_property_read_bool(node, "init-low"))
+				req_flags |= GPIOF_OUT_INIT_LOW;
+			break;
+	}
+	if (of_property_read_bool(node, "dir-changeable"))
+		req_flags |= GPIOF_EXPORT_CHANGEABLE;
+	if (gpio_flags & OF_GPIO_ACTIVE_LOW)
+		req_flags |= GPIOF_ACTIVE_LOW;
+	if (gpio_flags & OF_GPIO_SINGLE_ENDED) {
+		if (gpio_flags & OF_GPIO_ACTIVE_LOW)
+			req_flags |= GPIOF_OPEN_DRAIN;
+		else
+			req_flags |= GPIOF_OPEN_SOURCE;
+	}
+
+	/* request the gpio */
+	err = devm_gpio_request_one(dev, gpio, req_flags, name);
+	if (err != 0) {
+		dev_err(dev, "Failed to request gpio '%s'\n", name);
+		goto err_bad_node;
+	}
+
+	irq = -1;
+	irq_flags = 0;
+
+	/* counter mode requested - need an interrupt */
+	if (count_flags != 0) {
+		irq = gpio_to_irq(gpio);
+		if (IS_ERR_VALUE(irq)) {
+			dev_err(dev, "Failed to request gpio '%s'\n", name);
+			goto err_bad_node;
+		}
+
+		if (count_flags & COUNT_RISING_EDGE)
+			irq_flags |= IRQF_TRIGGER_RISING;
+		if (count_flags & COUNT_FALLING_EDGE)
+			irq_flags |= IRQF_TRIGGER_FALLING;
+	}
+
+	idr_preload(GFP_KERNEL);
+
+	entry = devm_kzalloc(dev, sizeof(*entry), GFP_KERNEL);
+	if (entry == NULL) {
+		dev_err(dev, "Failed to allocate gpio entry of '%s'\n", name);
+		err = -ENOMEM;
+		goto err_no_mem;
+	}
+
+	entry->id = -1;
+	entry->info = info;
+	entry->node = of_node_get(node);	/* get node reference */
+	entry->type = type;
+	entry->gpio = gpio;
+	entry->irq = irq;
+	entry->name = name;
+
+	/* interrupt enable is last thing done */
+	if (irq >= 0) {
+		atomic64_set(&entry->counter, 0);
+		entry->count_flags = count_flags;
+		err = devm_request_irq(dev, irq, gpio_of_helper_handler,
+				irq_flags, name, entry);
+		if (err != 0) {
+			dev_err(dev, "Failed to request irq of '%s'\n", name);
+			goto err_no_irq;
+		}
+	}
+
+	err = idr_alloc(&info->idr, entry, 0, 0, GFP_NOWAIT);
+	if (err >= 0)
+		entry->id = err;
+
+	idr_preload_end();
+
+	if (err < 0) {
+		dev_err(dev, "Failed to idr_get_new  of '%s'\n", name);
+		goto err_fail_idr;
+	}
+
+	dev_info(dev, "Allocated GPIO id=%d name='%s'\n", entry->id, name);
+
+	return entry;
+
+err_fail_idr:
+	/* nothing to do */
+err_no_irq:
+	/* release node ref */
+	of_node_put(node);
+	/* nothing else needs to be done, devres handles it */
+err_no_mem:
+err_bad_node:
+	return ERR_PTR(err);
+}
+
+static int gpio_of_entry_destroy(struct gpio_of_entry *entry)
+{
+	struct gpio_of_helper_info *info = entry->info;
+	struct platform_device *pdev = info->pdev;
+	struct device *dev = &pdev->dev;
+
+	dev_dbg(dev, "Destroying GPIO id=%d\n", entry->id);
+
+	/* remove from the IDR */
+	idr_remove(&info->idr, entry->id);
+
+	/* remove node ref */
+	of_node_put(entry->node);
+
+	/* free gpio */
+	devm_gpio_free(dev, entry->gpio);
+
+	/* gree irq */
+	if (entry->irq >= 0)
+		devm_free_irq(dev, entry->irq, entry);
+
+	/* and free */
+	devm_kfree(dev, entry);
+
+	return 0;
+}
+
+static int gpio_of_helper_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct gpio_of_helper_info *info;
+	struct gpio_of_entry *entry;
+	struct device_node *pnode = pdev->dev.of_node;
+	struct device_node *cnode;
+	struct pinctrl *pinctrl;
+	int err;
+
+	/* we only support OF */
+	if (pnode == NULL) {
+		dev_err(&pdev->dev, "No platform of_node!\n");
+		return -ENODEV;
+	}
+
+	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+	if (IS_ERR(pinctrl)) {
+		/* special handling for probe defer */
+		if (PTR_ERR(pinctrl) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		dev_warn(&pdev->dev,
+			"pins are not configured from the driver\n");
+	}
+
+	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+	if (info == NULL) {
+		dev_err(&pdev->dev, "Failed to allocate info\n");
+		err = -ENOMEM;
+		goto err_no_mem;
+	}
+	platform_set_drvdata(pdev, info);
+	info->pdev = pdev;
+
+	idr_init(&info->idr);
+
+	err = device_create_file(dev, &dev_attr_status);
+	if (err != 0) {
+		dev_err(dev, "Failed to create status sysfs attribute\n");
+		goto err_no_sysfs;
+	}
+
+	for_each_child_of_node(pnode, cnode) {
+		if (!of_device_is_available(cnode))
+			continue;
+
+		entry = gpio_of_entry_create(info, cnode);
+		if (IS_ERR_OR_NULL(entry)) {
+			dev_err(dev, "Failed to create gpio entry\n");
+			err = PTR_ERR(entry);
+			goto err_fail_entry;
+		}
+	}
+
+	dev_info(&pdev->dev, "ready\n");
+
+	return 0;
+err_fail_entry:
+	device_remove_file(&pdev->dev, &dev_attr_status);
+err_no_sysfs:
+err_no_mem:
+	return err;
+}
+
+static int gpio_of_helper_remove(struct platform_device *pdev)
+{
+	struct gpio_of_helper_info *info = platform_get_drvdata(pdev);
+	struct gpio_of_entry *entry;
+	int id;
+
+	dev_info(&pdev->dev, "removing\n");
+
+	device_remove_file(&pdev->dev, &dev_attr_status);
+
+	id = 0;
+	idr_for_each_entry(&info->idr, entry, id) {
+		/* destroy each and every one */
+		gpio_of_entry_destroy(entry);
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int gpio_of_helper_runtime_suspend(struct device *dev)
+{
+	/* place holder */
+	return 0;
+}
+
+static int gpio_of_helper_runtime_resume(struct device *dev)
+{
+	/* place holder */
+	return 0;
+}
+
+static struct dev_pm_ops gpio_of_helper_pm_ops = {
+	SET_RUNTIME_PM_OPS(gpio_of_helper_runtime_suspend,
+			   gpio_of_helper_runtime_resume, NULL)
+};
+#define GPIO_OF_HELPER_PM_OPS (&gpio_of_helper_pm_ops)
+#else
+#define GPIO_OF_HELPER_PM_OPS NULL
+#endif /* CONFIG_PM */
+
+struct platform_driver gpio_of_helper_driver = {
+	.probe		= gpio_of_helper_probe,
+	.remove		= gpio_of_helper_remove,
+	.driver = {
+		.name		= "gpio-of-helper",
+		.owner		= THIS_MODULE,
+		.pm		= GPIO_OF_HELPER_PM_OPS,
+		.of_match_table	= gpio_of_helper_of_match,
+	},
+};
+
+module_platform_driver(gpio_of_helper_driver);
+
+MODULE_AUTHOR("Pantelis Antoniou <panto@antoniou-consulting.com>");
+MODULE_DESCRIPTION("GPIO OF Helper driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:gpio-of-helper");
diff -Naur --no-dereference a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
--- a/drivers/gpio/Kconfig	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/gpio/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -95,6 +95,20 @@
 
 	  If unsure, say Y.
 
+config GPIO_OF_HELPER
+	bool "GPIO OF helper device (EXPERIMENTAL)"
+	depends on OF_GPIO
+	help
+	  Say Y here to add an GPIO OF helper driver
+
+	  Allows you specify a GPIO helper based on OF
+	  which allows simple export of GPIO functionality
+	  in user-space.
+
+	  Features include, value set/get, direction control,
+	  interrupt/value change poll support, event counting
+	  and others.
+
 config GPIO_GENERIC
 	depends on HAS_IOMEM # Only for IOMEM drivers
 	tristate
diff -Naur --no-dereference a/drivers/gpio/Makefile b/drivers/gpio/Makefile
--- a/drivers/gpio/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/gpio/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -10,6 +10,7 @@
 obj-$(CONFIG_GPIO_CDEV)		+= gpiolib-cdev.o
 obj-$(CONFIG_GPIO_SYSFS)	+= gpiolib-sysfs.o
 obj-$(CONFIG_GPIO_ACPI)		+= gpiolib-acpi.o
+obj-$(CONFIG_GPIO_OF_HELPER)	+= gpio-of-helper.o
 
 # Device drivers. Generally keep list sorted alphabetically
 obj-$(CONFIG_GPIO_REGMAP)	+= gpio-regmap.o
diff -Naur --no-dereference a/drivers/greybus/gb_netlink.h b/drivers/greybus/gb_netlink.h
--- a/drivers/greybus/gb_netlink.h	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/greybus/gb_netlink.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,34 @@
+/*
+ * Greybus TCP/IP driver for Greybus over TCP/IP
+ *
+ * Released under the GPLv2 only.
+ */
+
+#ifndef __GB_NETLINK_H
+#define __GB_NETLINK_H
+
+/* Maximum packet size */
+#define GB_NETLINK_MTU		2048
+/* Maximum number of Cports */
+#define GB_NETLINK_NUM_CPORT	32
+
+#define GB_NL_NAME		"GREYBUS"
+#define GB_NL_PID		1
+
+enum {
+	GB_NL_A_UNSPEC,
+	GB_NL_A_DATA,
+	GB_NL_A_CPORT,
+	__GB_NL_A_MAX,
+};
+#define GB_NL_A_MAX (__GB_NL_A_MAX - 1)
+
+enum {
+	GB_NL_C_UNSPEC,
+	GB_NL_C_MSG,
+	GB_NL_C_HD_RESET,
+	__GB_NL_C_MAX,
+};
+#define GB_NL_C_MAX (__GB_NL_C_MAX - 1)
+
+#endif /* __GB_NETLINK_H */
diff -Naur --no-dereference a/drivers/greybus/Kconfig b/drivers/greybus/Kconfig
--- a/drivers/greybus/Kconfig	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/greybus/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -28,5 +28,12 @@
 	  To compile this code as a module, choose M here: the module
 	  will be called gb-es2.ko
 
+config GREYBUS_NETLINK
+	tristate "Greybus netlink host controller"
+	help
+	  Select this option if you want to implement a Greybus
+	  "host controller" in userspace.
+	  To compile this code as a module, chose M here: the module
+	  will be called gb-netlink.ko
 endif	# GREYBUS
 
diff -Naur --no-dereference a/drivers/greybus/Makefile b/drivers/greybus/Makefile
--- a/drivers/greybus/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/greybus/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -20,7 +20,9 @@
 
 # Greybus Host controller drivers
 gb-es2-y := es2.o
+gb-netlink-y := netlink.o
 
 obj-$(CONFIG_GREYBUS_ES2)	+= gb-es2.o
+obj-$(CONFIG_GREYBUS_NETLINK)	+= gb-netlink.o
 
 
diff -Naur --no-dereference a/drivers/greybus/manifest.c b/drivers/greybus/manifest.c
--- a/drivers/greybus/manifest.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/greybus/manifest.c	2022-06-12 13:07:42.551111715 -0400
@@ -136,6 +136,17 @@
 	case GREYBUS_TYPE_CPORT:
 		expected_size += sizeof(struct greybus_descriptor_cport);
 		break;
+	case GREYBUS_TYPE_PROPERTY:
+		expected_size += sizeof(struct greybus_descriptor_property);
+		expected_size += desc->property.length;
+		expected_size = ALIGN(expected_size, 4);
+		break;
+	case GREYBUS_TYPE_DEVICE:
+		expected_size += sizeof(struct greybus_descriptor_device);
+		break;
+	case GREYBUS_TYPE_MIKROBUS:
+		expected_size += sizeof(struct greybus_descriptor_mikrobus);
+		break;
 	case GREYBUS_TYPE_INVALID:
 	default:
 		dev_err(&intf->dev, "invalid descriptor type (%u)\n",
@@ -372,6 +383,11 @@
 			continue;
 		}
 
+		if (class == GREYBUS_CLASS_BRIDGED_PHY){
+			bundle->manifest_blob = kmemdup(intf->manifest_blob, intf->manifest_size, GFP_KERNEL);
+			bundle->manifest_size = intf->manifest_size;
+		}
+
 		count++;
 	}
 
@@ -489,6 +505,8 @@
 		return false;
 	}
 
+	intf->manifest_size = size;
+	intf->manifest_blob = data;
 	/* OK, find all the descriptors */
 	desc = manifest->descriptors;
 	size -= sizeof(*header);
diff -Naur --no-dereference a/drivers/greybus/netlink.c b/drivers/greybus/netlink.c
--- a/drivers/greybus/netlink.c	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/greybus/netlink.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,257 @@
+/*
+ * Greybus Netlink driver for userspace controller
+ *
+ * Copyright (c) 2017 BayLibre SAS
+ *
+ * Released under the GPLv2 only.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <net/genetlink.h>
+#include <linux/greybus.h>
+
+#include "gb_netlink.h"
+
+static dev_t major_dev;
+static struct class *gb_nl_class;
+static struct genl_family gb_nl_family;
+static struct gb_host_device *gb_nl_hd;
+
+#define VERSION_NR	1
+
+#define DEVICE_NAME	"gb_netlink"
+#define CLASS_NAME	"gb_netlink"
+
+static int _gb_netlink_init(struct device *dev);
+static void _gb_netlink_exit(void);
+
+static int gb_netlink_msg(struct sk_buff *skb, struct genl_info *info)
+{
+	struct nlattr *na;
+	u16 cport_id;
+	void *data;
+
+	if (!info)
+		return -EPROTO;
+
+	na = info->attrs[GB_NL_A_CPORT];
+	if (!na) {
+		dev_err(&gb_nl_hd->dev,
+			"Received message without cport id attribute\n");
+		return -EPROTO;
+	}
+
+	cport_id = nla_get_u32(na);
+	if (!cport_id_valid(gb_nl_hd, cport_id)) {
+		dev_err(&gb_nl_hd->dev, "invalid cport id %u received",
+			cport_id);
+		return -EINVAL;
+	}
+
+	na = info->attrs[GB_NL_A_DATA];
+	if (!na) {
+		dev_err(&gb_nl_hd->dev,
+			"Received message without data attribute\n");
+		return -EPROTO;
+	}
+
+	data = nla_data(na);
+	if (!data) {
+		dev_err(&gb_nl_hd->dev,
+			"Received message without data\n");
+		return -EINVAL;
+	}
+
+	greybus_data_rcvd(gb_nl_hd, cport_id, data, nla_len(na));
+
+	return 0;
+}
+
+static int gb_netlink_hd_reset(struct sk_buff *skb, struct genl_info *info)
+{
+	struct device *dev;
+	struct gb_host_device *hd = gb_nl_hd;
+
+	dev = hd->dev.parent;
+	_gb_netlink_exit();
+	_gb_netlink_init(dev);
+
+	return 0;
+}
+
+static struct nla_policy gb_nl_policy[GB_NL_A_MAX + 1] = {
+	[GB_NL_A_DATA] = { .type = NLA_BINARY, .len = GB_NETLINK_MTU },
+	[GB_NL_A_CPORT] = { .type = NLA_U32},
+};
+
+static struct genl_ops gb_nl_ops[] = {
+	{
+		.cmd = GB_NL_C_MSG,
+		.doit = gb_netlink_msg,
+	},
+	{
+		.cmd = GB_NL_C_HD_RESET,
+		.doit = gb_netlink_hd_reset,
+	},
+};
+
+static struct genl_family gb_nl_family = {
+	.hdrsize = 0,
+	.name = GB_NL_NAME,
+	.version = VERSION_NR,
+	.maxattr = GB_NL_A_MAX,
+	.ops = gb_nl_ops,
+	.n_ops = ARRAY_SIZE(gb_nl_ops),
+        .policy = gb_nl_policy,
+};
+
+static int message_send(struct gb_host_device *hd, u16 cport_id,
+			struct gb_message *message, gfp_t gfp_mask)
+{
+	struct nl_msg *nl_msg;
+	struct sk_buff *skb;
+	int retval = -ENOMEM;
+
+	skb = genlmsg_new(sizeof(*message->header) + sizeof(u32) +
+			  message->payload_size, GFP_KERNEL);
+	if (!skb)
+		goto err_out;
+
+	nl_msg = genlmsg_put(skb, GB_NL_PID, 0,
+			     &gb_nl_family, 0, GB_NL_C_MSG);
+	if (!nl_msg)
+		goto err_free;
+
+	retval = nla_put_u32(skb, GB_NL_A_CPORT, cport_id);
+	if (retval)
+		goto err_cancel;
+
+	retval = nla_put(skb, GB_NL_A_DATA,
+			 sizeof(*message->header) + message->payload_size,
+			 message->header);
+	if (retval)
+		goto err_cancel;
+
+	genlmsg_end(skb, nl_msg);
+
+	retval = genlmsg_unicast(&init_net, skb, GB_NL_PID);
+	if (retval)
+		goto err_cancel;
+
+	greybus_message_sent(hd, message, 0);
+
+	return 0;
+
+err_cancel:
+	genlmsg_cancel(skb, nl_msg);
+err_free:
+	nlmsg_free(skb);
+err_out:
+	return retval;
+}
+
+static void message_cancel(struct gb_message *message)
+{
+}
+
+static struct gb_hd_driver tcpip_driver = {
+	.message_send		= message_send,
+	.message_cancel		= message_cancel,
+};
+
+static void _gb_netlink_exit(void)
+{
+	if (!gb_nl_hd)
+		return;
+
+	gb_hd_del(gb_nl_hd);
+	gb_hd_put(gb_nl_hd);
+
+	gb_nl_hd = NULL;
+}
+
+static void __exit gb_netlink_exit(void)
+{
+	_gb_netlink_exit();
+
+	unregister_chrdev_region(major_dev, 1);
+	device_destroy(gb_nl_class, major_dev);
+	class_destroy(gb_nl_class);
+
+	genl_unregister_family(&gb_nl_family);
+}
+
+static int _gb_netlink_init(struct device *dev)
+{
+	int retval;
+
+	gb_nl_hd = gb_hd_create(&tcpip_driver, dev, GB_NETLINK_MTU,
+				GB_NETLINK_NUM_CPORT);
+	if (IS_ERR(gb_nl_hd))
+		return PTR_ERR(gb_nl_hd);
+
+	retval = gb_hd_add(gb_nl_hd);
+	if (retval)
+		goto err_gb_hd_del;
+
+	return 0;
+
+err_gb_hd_del:
+	gb_hd_del(gb_nl_hd);
+	gb_hd_put(gb_nl_hd);
+
+	return retval;
+}
+
+static int __init gb_netlink_init(void)
+{
+	int retval;
+	struct device *dev;
+
+	retval = genl_register_family(&gb_nl_family);
+	if (retval)
+		return retval;
+
+	retval = alloc_chrdev_region(&major_dev, 0, 1, DEVICE_NAME);
+	if (retval)
+		goto err_genl_unregister;
+
+	gb_nl_class = class_create(THIS_MODULE, CLASS_NAME);
+	if (IS_ERR(gb_nl_class)) {
+		retval = PTR_ERR(gb_nl_class);
+		goto err_chrdev_unregister;
+	}
+
+	dev = device_create(gb_nl_class, NULL, major_dev, NULL, DEVICE_NAME);
+	if (IS_ERR(dev)) {
+		retval = PTR_ERR(dev);
+		goto err_class_destroy;
+	}
+
+	retval = _gb_netlink_init(dev);
+	if (retval)
+		goto err_device_destroy;
+
+	return 0;
+
+err_device_destroy:
+	device_destroy(gb_nl_class, major_dev);
+err_chrdev_unregister:
+	unregister_chrdev_region(major_dev, 1);
+err_class_destroy:
+	class_destroy(gb_nl_class);
+err_genl_unregister:
+	genl_unregister_family(&gb_nl_family);
+
+	return retval;
+}
+
+module_init(gb_netlink_init);
+module_exit(gb_netlink_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Alexandre Bailon <abailon@baylibre.com>");
diff -Naur --no-dereference a/drivers/input/misc/tps65218-pwrbutton.c b/drivers/input/misc/tps65218-pwrbutton.c
--- a/drivers/input/misc/tps65218-pwrbutton.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/input/misc/tps65218-pwrbutton.c	2022-06-12 13:07:42.551111715 -0400
@@ -36,7 +36,7 @@
 static const struct tps6521x_data tps65217_data = {
 	.reg_status = TPS65217_REG_STATUS,
 	.pb_mask = TPS65217_STATUS_PB,
-	.name = "tps65217_pwrbutton",
+	.name = "tps65217_pwr_but",
 };
 
 static const struct tps6521x_data tps65218_data = {
diff -Naur --no-dereference a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c
--- a/drivers/input/touchscreen/ar1021_i2c.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/input/touchscreen/ar1021_i2c.c	2022-06-12 13:07:42.551111715 -0400
@@ -17,6 +17,7 @@
 
 #define AR1021_MAX_X	4095
 #define AR1021_MAX_Y	4095
+#define AR1021_MAX_PRESSURE 255
 
 #define AR1021_CMD	0x55
 
@@ -26,8 +27,29 @@
 	struct i2c_client *client;
 	struct input_dev *input;
 	u8 data[AR1021_TOUCH_PKG_SIZE];
+	bool invert_x;
+	bool invert_y;
+	bool swap_xy;
 };
 
+static bool ar1021_get_prop_u32(struct device *dev,
+				     const char *property,
+				     unsigned int default_value,
+				     unsigned int *value)
+{
+	u32 val;
+	int error;
+
+	error = device_property_read_u32(dev, property, &val);
+	if (error) {
+		*value = default_value;
+		return false;
+	}
+
+	*value = val;
+	return true;
+}
+
 static irqreturn_t ar1021_i2c_irq(int irq, void *dev_id)
 {
 	struct ar1021_i2c *ar1021 = dev_id;
@@ -49,9 +71,22 @@
 	x = ((data[2] & 0x1f) << 7) | (data[1] & 0x7f);
 	y = ((data[4] & 0x1f) << 7) | (data[3] & 0x7f);
 
-	input_report_abs(input, ABS_X, x);
-	input_report_abs(input, ABS_Y, y);
+	if (ar1021->invert_x)
+		x = AR1021_MAX_X - x;
+
+	if (ar1021->invert_y)
+		y = AR1021_MAX_Y - y;
+
+	if (ar1021->swap_xy) {
+		input_report_abs(input, ABS_X, y);
+		input_report_abs(input, ABS_Y, x);
+	} else {
+		input_report_abs(input, ABS_X, x);
+		input_report_abs(input, ABS_Y, y);
+	}
+
 	input_report_key(input, BTN_TOUCH, button);
+	input_report_abs(input, ABS_PRESSURE, AR1021_MAX_PRESSURE);
 	input_sync(input);
 
 out:
@@ -93,6 +128,8 @@
 	struct ar1021_i2c *ar1021;
 	struct input_dev *input;
 	int error;
+	unsigned int offset_x, offset_y;
+	bool data_present;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 		dev_err(&client->dev, "i2c_check_functionality error\n");
@@ -116,10 +153,44 @@
 	input->open = ar1021_i2c_open;
 	input->close = ar1021_i2c_close;
 
+	ar1021->invert_x = device_property_read_bool(&client->dev, "touchscreen-inverted-x");
+	ar1021->invert_y = device_property_read_bool(&client->dev, "touchscreen-inverted-y");
+	ar1021->swap_xy = device_property_read_bool(&client->dev, "touchscreen-swapped-x-y");
+
+	data_present = ar1021_get_prop_u32(&client->dev,
+						"touchscreen-offset-x",
+						0,
+						&offset_x);
+
+	if (data_present)
+		dev_info(&client->dev, "touchscreen-offset-x: %d\n", offset_x);
+
+	data_present = ar1021_get_prop_u32(&client->dev,
+						"touchscreen-offset-y",
+						0,
+						&offset_y);
+
+	if (data_present)
+		dev_info(&client->dev, "touchscreen-offset-y: %d\n", offset_y);
+
 	__set_bit(INPUT_PROP_DIRECT, input->propbit);
-	input_set_capability(input, EV_KEY, BTN_TOUCH);
-	input_set_abs_params(input, ABS_X, 0, AR1021_MAX_X, 0, 0);
-	input_set_abs_params(input, ABS_Y, 0, AR1021_MAX_Y, 0, 0);
+	//input_set_capability(input, EV_KEY, BTN_TOUCH);
+
+	input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+	input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+
+	if(ar1021->swap_xy)
+	{
+		input_set_abs_params(input, ABS_X, 0, AR1021_MAX_Y, 0, 0);
+		input_set_abs_params(input, ABS_Y, 0, AR1021_MAX_X, 0, 0);
+	}
+	else
+	{
+		input_set_abs_params(input, ABS_X, offset_x, AR1021_MAX_X-offset_x, 0, 0);
+		input_set_abs_params(input, ABS_Y, offset_y, AR1021_MAX_Y-offset_y, 0, 0);
+	}
+
+	input_set_abs_params(input, ABS_PRESSURE, 0, AR1021_MAX_PRESSURE, 0, 0);
 
 	input_set_drvdata(input, ar1021);
 
diff -Naur --no-dereference a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
--- a/drivers/input/touchscreen/ti_am335x_tsc.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c	2022-06-12 13:07:42.551111715 -0400
@@ -34,6 +34,7 @@
 #define ADCFSM_STEPID		0x10
 #define SEQ_SETTLE		275
 #define MAX_12BIT		((1 << 12) - 1)
+#define PRESSURE_MAX		1000
 
 #define TSC_IRQENB_MASK		(IRQENB_FIFO0THRES | IRQENB_EOS | IRQENB_HW_PEN)
 
@@ -238,6 +239,7 @@
 	for (i = 0; i < creads; i++) {
 		xvals[i] = titsc_readl(ts_dev, REG_FIFO0);
 		xvals[i] &= 0xfff;
+		pr_debug("i %d xval %d yval %d z1 %d z2 %d\n", i, xvals[i], yvals[i], *z1, *z2);
 	}
 
 	/*
@@ -316,13 +318,13 @@
 			 * Resistance(touch) = x plate resistance *
 			 * x postion/4096 * ((z2 / z1) - 1)
 			 */
-			z = z1 - z2;
+			z = z2 - z1;
 			z *= x;
 			z *= ts_dev->x_plate_resistance;
-			z /= z2;
+			z /= z1;
 			z = (z + 2047) >> 12;
-
-			if (z <= MAX_12BIT) {
+			pr_debug("x %d y %d z1 %d z2 %d z %d\n", x, y, z1, z2, z);
+			if (z <= PRESSURE_MAX) {
 				input_report_abs(input_dev, ABS_X, x);
 				input_report_abs(input_dev, ABS_Y, y);
 				input_report_abs(input_dev, ABS_PRESSURE, z);
@@ -463,6 +465,7 @@
 	input_dev->name = "ti-tsc";
 	input_dev->dev.parent = &pdev->dev;
 
+	__set_bit(INPUT_PROP_DIRECT, input_dev->propbit);
 	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 	input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
 
diff -Naur --no-dereference a/drivers/Makefile b/drivers/Makefile
--- a/drivers/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -56,6 +56,9 @@
 obj-y				+= tty/
 obj-y				+= char/
 
+# put mmc early as many morden devices use emm/sd card as rootfs storage
+obj-y				+= mmc/
+
 # iommu/ comes before gpu as gpu are using iommu controllers
 obj-y				+= iommu/
 
@@ -127,7 +130,6 @@
 obj-$(CONFIG_PM_OPP)		+= opp/
 obj-$(CONFIG_CPU_FREQ)		+= cpufreq/
 obj-$(CONFIG_CPU_IDLE)		+= cpuidle/
-obj-y				+= mmc/
 obj-$(CONFIG_MEMSTICK)		+= memstick/
 obj-$(CONFIG_NEW_LEDS)		+= leds/
 obj-$(CONFIG_INFINIBAND)	+= infiniband/
diff -Naur --no-dereference a/drivers/misc/cape/beaglebone/bone-pinmux-helper.c b/drivers/misc/cape/beaglebone/bone-pinmux-helper.c
--- a/drivers/misc/cape/beaglebone/bone-pinmux-helper.c	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/cape/beaglebone/bone-pinmux-helper.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,242 @@
+/*
+ * Pinmux helper driver
+ *
+ * Copyright (C) 2013 Pantelis Antoniou <panto@antoniou-consulting.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/consumer.h>
+
+static const struct of_device_id bone_pinmux_helper_of_match[] = {
+	{
+		.compatible = "bone-pinmux-helper",
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, bone_pinmux_helper_of_match);
+
+struct pinmux_helper_data {
+	struct pinctrl *pinctrl;
+	char *selected_state_name;
+};
+
+static ssize_t pinmux_helper_show_state(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct pinmux_helper_data *data = platform_get_drvdata(pdev);
+	const char *name;
+
+	name = data->selected_state_name;
+	if (name == NULL || strlen(name) == 0)
+		name = "none";
+	return sprintf(buf, "%s\n", name);
+}
+
+static ssize_t pinmux_helper_store_state(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct pinmux_helper_data *data = platform_get_drvdata(pdev);
+	struct pinctrl_state *state;
+	char *state_name;
+	char *s;
+	int err;
+
+	/* duplicate (as a null terminated string) */
+	state_name = kmalloc(count + 1, GFP_KERNEL);
+	if (state_name == NULL)
+		return -ENOMEM;
+	memcpy(state_name, buf, count);
+	state_name[count] = '\0';
+
+	/* and chop off newline */
+	s = strchr(state_name, '\n');
+	if (s != NULL)
+		*s = '\0';
+
+	/* try to select default state at first (if it exists) */
+	state = pinctrl_lookup_state(data->pinctrl, state_name);
+	if (!IS_ERR(state)) {
+		err = pinctrl_select_state(data->pinctrl, state);
+		if (err != 0)
+			dev_err(dev, "Failed to select state %s\n",
+					state_name);
+	} else {
+		dev_err(dev, "Failed to find state %s\n", state_name);
+		err = PTR_ERR_OR_ZERO(state);
+	}
+
+	if (err == 0) {
+		kfree(data->selected_state_name);
+		data->selected_state_name = state_name;
+	}
+
+	return err ? err : count;
+}
+
+static DEVICE_ATTR(state, S_IWUSR | S_IRUGO,
+		   pinmux_helper_show_state, pinmux_helper_store_state);
+
+static struct attribute *pinmux_helper_attributes[] = {
+	&dev_attr_state.attr,
+	NULL
+};
+
+static const struct attribute_group pinmux_helper_attr_group = {
+	.attrs = pinmux_helper_attributes,
+};
+
+static int bone_pinmux_helper_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct pinmux_helper_data *data;
+	struct pinctrl_state *state;
+	char *state_name;
+	const char *mode_name;
+	int mode_len;
+	int err;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (data == NULL) {
+		dev_err(dev, "Failed to allocate data\n");
+		err = -ENOMEM;
+		goto err_no_mem;
+	}
+
+	state_name = kmalloc(strlen(PINCTRL_STATE_DEFAULT) + 1,
+			GFP_KERNEL);
+	if (state_name == NULL) {
+		dev_err(dev, "Failed to allocate state name\n");
+		err = -ENOMEM;
+		goto err_no_state_mem;
+	}
+	data->selected_state_name = state_name;
+	strcpy(data->selected_state_name, PINCTRL_STATE_DEFAULT);
+
+	platform_set_drvdata(pdev, data);
+
+	data->pinctrl = devm_pinctrl_get(dev);
+	if (IS_ERR(data->pinctrl)) {
+		dev_err(dev, "Failed to get pinctrl\n");
+		err = PTR_ERR_OR_ZERO(data->pinctrl);
+		goto err_no_pinctrl;
+	}
+
+	/* See if an initial mode is specified in the device tree */
+	mode_name = of_get_property(dev->of_node, "mode", &mode_len);
+
+	err = -1;
+	if (mode_name != NULL ) {
+		state_name = kmalloc(mode_len + 1, GFP_KERNEL);
+		if (state_name == NULL) {
+			dev_err(dev, "Failed to allocate state name\n");
+			err = -ENOMEM;
+			goto err_no_mode_mem;
+		}
+		strncpy(state_name, mode_name, mode_len);
+
+		/* try to select requested mode */
+		state = pinctrl_lookup_state(data->pinctrl, state_name);
+		if (!IS_ERR(state)) {
+			err = pinctrl_select_state(data->pinctrl, state);
+			if (err != 0) {
+				dev_warn(dev, "Unable to select requested mode %s\n", state_name);
+				kfree(state_name);
+			} else {
+				kfree(data->selected_state_name);
+				data->selected_state_name = state_name;
+				dev_notice(dev, "Set initial pinmux mode to %s\n", state_name);
+			}
+		}
+	}
+
+	/* try to select default state if mode_name failed */
+	if ( err != 0) {
+		state = pinctrl_lookup_state(data->pinctrl,
+				data->selected_state_name);
+		if (!IS_ERR(state)) {
+			err = pinctrl_select_state(data->pinctrl, state);
+			if (err != 0) {
+				dev_err(dev, "Failed to select default state\n");
+				goto err_no_state;
+			}
+		} else {
+			data->selected_state_name = '\0';
+		}
+	}
+
+	/* Register sysfs hooks */
+	err = sysfs_create_group(&dev->kobj, &pinmux_helper_attr_group);
+	if (err) {
+		dev_err(dev, "Failed to create sysfs group\n");
+		goto err_no_sysfs;
+	}
+
+	return 0;
+
+err_no_sysfs:
+err_no_state:
+err_no_mode_mem:
+	devm_pinctrl_put(data->pinctrl);
+err_no_pinctrl:
+	devm_kfree(dev, data->selected_state_name);
+err_no_state_mem:
+	devm_kfree(dev, data);
+err_no_mem:
+	return err;
+}
+
+static int bone_pinmux_helper_remove(struct platform_device *pdev)
+{
+	struct pinmux_helper_data *data = platform_get_drvdata(pdev);
+	struct device *dev = &pdev->dev;
+
+	sysfs_remove_group(&dev->kobj, &pinmux_helper_attr_group);
+	kfree(data->selected_state_name);
+	devm_pinctrl_put(data->pinctrl);
+	devm_kfree(dev, data);
+
+	return 0;
+}
+
+struct platform_driver bone_pinmux_helper_driver = {
+	.probe		= bone_pinmux_helper_probe,
+	.remove		= bone_pinmux_helper_remove,
+	.driver = {
+		.name		= "bone-pinmux-helper",
+		.owner		= THIS_MODULE,
+		.of_match_table	= bone_pinmux_helper_of_match,
+	},
+};
+
+module_platform_driver(bone_pinmux_helper_driver);
+
+MODULE_AUTHOR("Pantelis Antoniou");
+MODULE_DESCRIPTION("Beaglebone pinmux helper driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bone-pinmux-helper");
diff -Naur --no-dereference a/drivers/misc/cape/beaglebone/Kconfig b/drivers/misc/cape/beaglebone/Kconfig
--- a/drivers/misc/cape/beaglebone/Kconfig	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/cape/beaglebone/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,10 @@
+#
+# Beaglebone capes
+#
+
+config BEAGLEBONE_PINMUX_HELPER
+	tristate "Beaglebone Pinmux Helper"
+	depends on ARCH_OMAP2PLUS && OF
+	default n
+	help
+	  Say Y here to include support for the pinmux helper
diff -Naur --no-dereference a/drivers/misc/cape/beaglebone/Makefile b/drivers/misc/cape/beaglebone/Makefile
--- a/drivers/misc/cape/beaglebone/Makefile	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/cape/beaglebone/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,5 @@
+#
+# Makefile for beaglebone capes
+#
+
+obj-$(CONFIG_BEAGLEBONE_PINMUX_HELPER)	+= bone-pinmux-helper.o
diff -Naur --no-dereference a/drivers/misc/cape/Kconfig b/drivers/misc/cape/Kconfig
--- a/drivers/misc/cape/Kconfig	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/cape/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,5 @@
+#
+# Capes
+#
+
+source "drivers/misc/cape/beaglebone/Kconfig"
diff -Naur --no-dereference a/drivers/misc/cape/Makefile b/drivers/misc/cape/Makefile
--- a/drivers/misc/cape/Makefile	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/cape/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,5 @@
+#
+# Makefile for cape like devices
+#
+
+obj-y				+= beaglebone/
diff -Naur --no-dereference a/drivers/misc/Kconfig b/drivers/misc/Kconfig
--- a/drivers/misc/Kconfig	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/misc/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -479,6 +479,7 @@
 source "drivers/misc/mei/Kconfig"
 source "drivers/misc/vmw_vmci/Kconfig"
 source "drivers/misc/genwqe/Kconfig"
+source "drivers/misc/cape/Kconfig"
 source "drivers/misc/echo/Kconfig"
 source "drivers/misc/cxl/Kconfig"
 source "drivers/misc/ocxl/Kconfig"
@@ -487,4 +488,5 @@
 source "drivers/misc/habanalabs/Kconfig"
 source "drivers/misc/uacce/Kconfig"
 source "drivers/misc/pvpanic/Kconfig"
+source "drivers/misc/mikrobus/Kconfig"
 endmenu
diff -Naur --no-dereference a/drivers/misc/Makefile b/drivers/misc/Makefile
--- a/drivers/misc/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/misc/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -39,6 +39,7 @@
 obj-$(CONFIG_PCH_PHUB)		+= pch_phub.o
 obj-y				+= ti-st/
 obj-y				+= lis3lv02d/
+obj-y				+= mikrobus/
 obj-$(CONFIG_ALTERA_STAPL)	+=altera-stapl/
 obj-$(CONFIG_INTEL_MEI)		+= mei/
 obj-$(CONFIG_VMWARE_VMCI)	+= vmw_vmci/
@@ -46,6 +47,7 @@
 obj-$(CONFIG_SRAM)		+= sram.o
 obj-$(CONFIG_SRAM_EXEC)		+= sram-exec.o
 obj-$(CONFIG_GENWQE)		+= genwqe/
+obj-y				+= cape/
 obj-$(CONFIG_ECHO)		+= echo/
 obj-$(CONFIG_CXL_BASE)		+= cxl/
 obj-$(CONFIG_DW_XDATA_PCIE)	+= dw-xdata-pcie.o
diff -Naur --no-dereference a/drivers/misc/mikrobus/Kconfig b/drivers/misc/mikrobus/Kconfig
--- a/drivers/misc/mikrobus/Kconfig	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/mikrobus/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,16 @@
+menuconfig MIKROBUS
+	tristate "Module for instantiating devices on mikroBUS ports"
+	help
+	  This option enables the mikroBUS driver. mikroBUS is an add-on
+	  board socket standard that offers maximum expandability with
+	  the smallest number of pins. The mikroBUS driver instantiates
+	  devices on a mikroBUS port described by identifying data present
+	  in an add-on board resident EEPROM, more details on the mikroBUS
+	  driver support and discussion can be found in this eLinux wiki :
+	  elinux.org/Mikrobus
+
+
+	  Say Y here to enable support for this driver.
+
+	  To compile this code as a module, chose M here: the module
+	  will be called mikrobus.ko
diff -Naur --no-dereference a/drivers/misc/mikrobus/Makefile b/drivers/misc/mikrobus/Makefile
--- a/drivers/misc/mikrobus/Makefile	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/mikrobus/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+# mikroBUS Core
+
+obj-$(CONFIG_MIKROBUS) += mikrobus.o
+mikrobus-y :=	mikrobus_core.o	mikrobus_manifest.o
+obj-$(CONFIG_MIKROBUS) += mikrobus_id.o
\ No newline at end of file
diff -Naur --no-dereference a/drivers/misc/mikrobus/mikrobus_core.c b/drivers/misc/mikrobus/mikrobus_core.c
--- a/drivers/misc/mikrobus/mikrobus_core.c	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/mikrobus/mikrobus_core.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1011 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * mikroBUS driver for instantiating add-on
+ * board devices with an identifier EEPROM
+ *
+ * Copyright 2021 Vaishnav M A, BeagleBoard.org Foundation.
+ * Copyright 2021  Zoran Stojsavljevic, zoran.stojsavljevic@gmail.com 
+ */
+
+#define pr_fmt(fmt) "mikrobus:%s: " fmt, __func__
+
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/idr.h>
+#include <linux/init.h>
+#include <linux/jump_label.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mutex.h>
+#include <linux/w1.h>
+#include <linux/w1-gpio.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/greybus.h>
+#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
+#include <linux/gpio/driver.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/nvmem-provider.h>
+#include <linux/interrupt.h>
+#include <linux/spi/spi.h>
+#include <linux/serdev.h>
+#include <linux/property.h>
+#include <linux/platform_device.h>
+#include <linux/debugfs.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
+#include <linux/clk-provider.h>
+#include <linux/greybus/greybus_manifest.h>
+#include <linux/greybus/gbphy.h>
+#include <linux/mikrobus.h>
+
+#include "mikrobus_manifest.h"
+
+#define MIKROBUS_ID_USER_EEPROM_ADDR	0x0A0A
+
+static DEFINE_MUTEX(core_lock);
+static DEFINE_IDR(mikrobus_port_idr);
+static struct class_compat *mikrobus_port_compat_class;
+int	__mikrobus_first_dynamic_bus_num;
+static bool is_registered;
+static int mikrobus_port_id_eeprom_probe(struct mikrobus_port *port);
+
+const char *MIKROBUS_PINCTRL_STR[] = {"pwm", "uart", "i2c", "spi"};
+
+struct bus_type mikrobus_bus_type = {
+	.name = "mikrobus",
+};
+EXPORT_SYMBOL_GPL(mikrobus_bus_type);
+
+int mikrobus_port_scan_eeprom(struct mikrobus_port *port)
+{
+	struct addon_board_info *board;
+	int manifest_size;
+	char header[12];
+	int retval;
+	uint16_t manifest_start_addr;
+	char *buf;
+
+	if(port->skip_scan)
+		return -EINVAL;
+
+	retval = nvmem_device_read(port->eeprom, MIKROBUS_ID_USER_EEPROM_ADDR, 1, header);
+	if (retval != 1) {
+		dev_err(&port->dev, "failed to fetch manifest start address %d\n",
+			retval);
+		header[0] = 0;
+	}
+	manifest_start_addr = header[0] << 8;
+	pr_info("manifest start address is 0x%x \n", manifest_start_addr);
+
+	retval = nvmem_device_read(port->eeprom, manifest_start_addr, 12, header);
+	if (retval != 12) {
+		dev_err(&port->dev, "failed to fetch manifest header %d\n",
+			retval);
+		return -EINVAL;
+	}
+	manifest_size = mikrobus_manifest_header_validate(header, 12);
+	if (manifest_size < 0) {
+		dev_err(&port->dev, "invalid manifest size %d\n",
+			manifest_size);
+		return -EINVAL;
+	}
+	buf = kzalloc(manifest_size, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	retval = nvmem_device_read(port->eeprom, manifest_start_addr, manifest_size, buf);
+	if (retval != manifest_size) {
+		dev_err(&port->dev, "failed to fetch manifest %d\n", retval);
+		retval = -EINVAL;
+		goto err_free_buf;
+	}
+	board = kzalloc(sizeof(*board), GFP_KERNEL);
+	if (!board) {
+		retval = -ENOMEM;
+		goto err_free_buf;
+	}
+	w1_reset_bus(port->w1_master);
+	/* set RST HIGH */
+	gpiod_direction_output(port->gpios->desc[MIKROBUS_PIN_RST], 1);
+	set_bit(W1_ABORT_SEARCH, &port->w1_master->flags);
+	INIT_LIST_HEAD(&board->manifest_descs);
+	INIT_LIST_HEAD(&board->devices);
+	retval = mikrobus_manifest_parse(board, buf, manifest_size);
+	if (!retval) {
+		dev_err(&port->dev, "failed to parse manifest, size %d\n",
+			manifest_size);
+		retval = -EINVAL;
+		goto err_free_board;
+	}
+	retval = mikrobus_board_register(port, board);
+	if (retval) {
+		dev_err(&port->dev, "failed to register board %s\n",
+			board->name);
+		goto err_free_board;
+	}
+	kfree(buf);
+	return 0;
+err_free_board:
+	kfree(board);
+err_free_buf:
+	kfree(buf);
+	return retval;
+}
+EXPORT_SYMBOL_GPL(mikrobus_port_scan_eeprom);
+
+static ssize_t name_show(struct device *dev, struct device_attribute *attr,
+						 char *buf)
+{
+	return sprintf(buf, "%s\n", to_mikrobus_port(dev)->name);
+}
+static DEVICE_ATTR_RO(name);
+
+static ssize_t new_device_store(struct device *dev, struct device_attribute *attr,
+					 const char *buf, size_t count)
+{
+	struct mikrobus_port *port = to_mikrobus_port(dev);
+	struct addon_board_info *board;
+	int retval;
+
+	if (port->board) {
+		dev_err(dev, "already has board registered\n");
+		return -EBUSY;
+	}
+
+	board = kzalloc(sizeof(*board), GFP_KERNEL);
+	if (!board)
+		return -ENOMEM;
+	INIT_LIST_HEAD(&board->manifest_descs);
+	INIT_LIST_HEAD(&board->devices);
+	retval = mikrobus_manifest_parse(board, (void *)buf, count);
+	if (!retval) {
+		dev_err(dev, "failed to parse manifest\n");
+		retval = -EINVAL;
+		goto err_free_board;
+	}
+	retval = mikrobus_board_register(port, board);
+	if (retval) {
+		dev_err(dev, "failed to register board %s\n", board->name);
+		retval = -EINVAL;
+		goto err_free_board;
+	}
+	return count;
+err_free_board:
+	kfree(board);
+	return retval;
+}
+static DEVICE_ATTR_WO(new_device);
+
+static ssize_t delete_device_store(struct device *dev, struct device_attribute *attr,
+							const char *buf, size_t count)
+{
+	struct mikrobus_port *port = to_mikrobus_port(dev);
+	unsigned long id;
+
+	if (kstrtoul(buf, 0, &id)) {
+		dev_err(dev, "cannot parse board id");
+		return -EINVAL;
+	}
+	if (!port->board) {
+		dev_err(dev, "does not have registered boards");
+		return -ENODEV;
+	}
+	mikrobus_board_unregister(port, port->board);
+	return count;
+}
+static DEVICE_ATTR_IGNORE_LOCKDEP(delete_device, 0200, NULL, delete_device_store);
+
+static struct attribute *mikrobus_port_attrs[] = {
+	&dev_attr_new_device.attr, &dev_attr_delete_device.attr, &dev_attr_name.attr, NULL};
+ATTRIBUTE_GROUPS(mikrobus_port);
+
+static void mikrobus_port_release(struct device *dev)
+{
+	struct mikrobus_port *port = to_mikrobus_port(dev);
+
+	mutex_lock(&core_lock);
+	idr_remove(&mikrobus_port_idr, port->id);
+	mutex_unlock(&core_lock);
+	kfree(port);
+}
+
+struct device_type mikrobus_port_type = {
+	.groups = mikrobus_port_groups,
+	.release = mikrobus_port_release,
+};
+EXPORT_SYMBOL_GPL(mikrobus_port_type);
+
+static int mikrobus_w1_master_match(struct device *dev, const void *data)
+{
+	struct mikrobus_port *port;
+
+	if(dev->type != &mikrobus_port_type)
+		return 0;	
+
+	port = to_mikrobus_port(dev);
+
+	return port->w1_master == data;
+}
+
+struct mikrobus_port *mikrobus_find_port_by_w1_master(struct w1_master *master)
+{
+	struct device *dev;
+
+	dev = bus_find_device(&mikrobus_bus_type, NULL, master, mikrobus_w1_master_match);
+	if (!dev)
+		return NULL;
+
+	return (dev->type == &mikrobus_port_type) ? to_mikrobus_port(dev) : NULL;
+}
+EXPORT_SYMBOL(mikrobus_find_port_by_w1_master);
+
+int mikrobus_port_pinctrl_select(struct mikrobus_port *port)
+{
+	struct pinctrl_state *state;
+	int retval;
+	int i;
+
+	for (i = 0; i < MIKROBUS_NUM_PINCTRL_STATE; i++) {
+		state = pinctrl_lookup_state(port->pinctrl,
+						port->pinctrl_selected[i]);
+		if (!IS_ERR(state)) {
+			retval = pinctrl_select_state(port->pinctrl, state);
+			pr_debug("setting pinctrl %s\n",
+					port->pinctrl_selected[i]);
+			if (retval != 0) {
+				dev_err(&port->dev, "failed to select state %s\n",
+						port->pinctrl_selected[i]);
+				return retval;
+			}
+		} else {
+			dev_err(&port->dev, "failed to find state %s\n",
+						port->pinctrl_selected[i]);
+			return PTR_ERR(state);
+		}
+	}
+
+	return retval;
+}
+EXPORT_SYMBOL_GPL(mikrobus_port_pinctrl_select);
+
+static int mikrobus_port_pinctrl_setup(struct mikrobus_port *port, struct addon_board_info *board)
+{
+	int retval;
+	int i;
+
+	for (i = 0; i < MIKROBUS_NUM_PINCTRL_STATE; i++) {
+		switch (i) {
+		case MIKROBUS_PINCTRL_PWM:
+			if (board->pin_state[MIKROBUS_PIN_PWM] == MIKROBUS_STATE_PWM)
+				sprintf(port->pinctrl_selected[i], "%s_%s",
+					MIKROBUS_PINCTRL_STR[i], PINCTRL_STATE_DEFAULT);
+			else
+				sprintf(port->pinctrl_selected[i], "%s_%s",
+					MIKROBUS_PINCTRL_STR[i], MIKROBUS_PINCTRL_STATE_GPIO);
+			break;
+		case MIKROBUS_PINCTRL_UART:
+			if (board->pin_state[MIKROBUS_PIN_RX] == MIKROBUS_STATE_UART)
+				sprintf(port->pinctrl_selected[i], "%s_%s",
+					MIKROBUS_PINCTRL_STR[i], PINCTRL_STATE_DEFAULT);
+			else
+				sprintf(port->pinctrl_selected[i], "%s_%s",
+					MIKROBUS_PINCTRL_STR[i], MIKROBUS_PINCTRL_STATE_GPIO);
+			break;
+		case MIKROBUS_PINCTRL_I2C:
+			if (board->pin_state[MIKROBUS_PIN_SCL] == MIKROBUS_STATE_I2C)
+				sprintf(port->pinctrl_selected[i], "%s_%s",
+					MIKROBUS_PINCTRL_STR[i], PINCTRL_STATE_DEFAULT);
+			else
+				sprintf(port->pinctrl_selected[i], "%s_%s",
+					MIKROBUS_PINCTRL_STR[i], MIKROBUS_PINCTRL_STATE_GPIO);
+			break;
+		case MIKROBUS_PINCTRL_SPI:
+			if (board->pin_state[MIKROBUS_PIN_MOSI] == MIKROBUS_STATE_SPI)
+				sprintf(port->pinctrl_selected[i], "%s_%s",
+					MIKROBUS_PINCTRL_STR[i], PINCTRL_STATE_DEFAULT);
+			else
+				sprintf(port->pinctrl_selected[i], "%s_%s",
+					MIKROBUS_PINCTRL_STR[i], MIKROBUS_PINCTRL_STATE_GPIO);
+			break;
+		}
+	}
+
+	retval = mikrobus_port_pinctrl_select(port);
+	if (retval)
+		dev_err(&port->dev, "failed to select pinctrl states [%d]", retval);
+	return retval;
+}
+
+static int mikrobus_irq_get(struct mikrobus_port *port, int irqno,
+							int irq_type)
+{
+	int irq;
+
+	if (irqno > port->gpios->ndescs - 1) {
+		dev_err(&port->dev, "GPIO %d does not exist", irqno);
+		return -ENODEV;
+	}
+
+	irq = gpiod_to_irq(port->gpios->desc[irqno]);
+	if (irq < 0) {
+		dev_err(&port->dev, "could not get irq %d", irqno);
+		return -EINVAL;
+	}
+	irq_set_irq_type(irq, irq_type);
+	return irq;
+}
+
+static int mikrobus_gpio_setup(struct gpio_desc *gpio, int gpio_state)
+{
+	int retval;
+
+	switch (gpio_state) {
+	case MIKROBUS_STATE_INPUT:
+		retval = gpiod_direction_input(gpio);
+		break;
+	case MIKROBUS_STATE_OUTPUT_HIGH:
+		retval = gpiod_direction_output(gpio, 1);
+		break;
+	case MIKROBUS_STATE_OUTPUT_LOW:
+		retval = gpiod_direction_output(gpio, 0);
+		break;
+	case MIKROBUS_STATE_PWM:
+	case MIKROBUS_STATE_SPI:
+	case MIKROBUS_STATE_I2C:
+	default:
+		return 0;
+	}
+	return retval;
+}
+
+static char *mikrobus_gpio_chip_name_get(struct mikrobus_port *port, int gpio)
+{
+	char *name;
+	struct gpio_chip *gpiochip;
+
+	if (gpio > port->gpios->ndescs - 1)
+		return NULL;
+
+	gpiochip = gpiod_to_chip(port->gpios->desc[gpio]);
+	name = kmemdup(gpiochip->label, MIKROBUS_NAME_SIZE, GFP_KERNEL);
+	return name;
+}
+
+static int mikrobus_gpio_hwnum_get(struct mikrobus_port *port, int gpio)
+{
+	int hwnum;
+	struct gpio_chip *gpiochip;
+
+	if (gpio > port->gpios->ndescs - 1)
+		return -ENODEV;
+
+	gpiochip = gpiod_to_chip(port->gpios->desc[gpio]);
+	hwnum = desc_to_gpio(port->gpios->desc[gpio]) - gpiochip->base;
+	return hwnum;
+}
+
+static void mikrobus_board_device_release_all(struct addon_board_info *info)
+{
+	struct board_device_info *dev;
+	struct board_device_info *next;
+
+	list_for_each_entry_safe(dev, next, &info->devices, links) {
+		list_del(&dev->links);
+		kfree(dev);
+	}
+}
+
+static int mikrobus_device_register(struct mikrobus_port *port,
+					struct board_device_info *dev, char *board_name)
+{
+	struct i2c_board_info *i2c;
+	struct spi_device *spi;
+	struct serdev_device *serdev;
+	struct platform_device *pdev;
+	struct gpiod_lookup_table *lookup;
+	struct regulator_consumer_supply regulator;
+	char devname[MIKROBUS_NAME_SIZE];
+	int i;
+	u64 *val;
+
+	dev_info(&port->dev, "registering device : %s", dev->drv_name);
+
+	if (dev->gpio_lookup) {
+		lookup = dev->gpio_lookup;
+		if (dev->protocol == GREYBUS_PROTOCOL_SPI) {
+			snprintf(devname, sizeof(devname), "%s.%u",
+				dev_name(&port->spi_mstr->dev),
+				port->chip_select[dev->reg]);
+			lookup->dev_id = kmemdup(devname, MIKROBUS_NAME_SIZE, GFP_KERNEL);
+		} else if (dev->protocol == GREYBUS_PROTOCOL_RAW) {
+			snprintf(devname, sizeof(devname), "%s.%u",
+				 dev->drv_name, dev->reg);
+			lookup->dev_id = kmemdup(devname, MIKROBUS_NAME_SIZE, GFP_KERNEL);
+		} else
+			lookup->dev_id = dev->drv_name;
+		dev_info(&port->dev, " adding lookup table : %s\n",
+			lookup->dev_id);
+		for (i = 0; i < dev->num_gpio_resources; i++) {
+			lookup->table[i].key =
+			mikrobus_gpio_chip_name_get(port,
+						lookup->table[i].chip_hwnum);
+			lookup->table[i].chip_hwnum =
+			mikrobus_gpio_hwnum_get(port,
+						lookup->table[i].chip_hwnum);
+		}
+		gpiod_add_lookup_table(lookup);
+	}
+	if (dev->regulators) {
+		if (dev->protocol == GREYBUS_PROTOCOL_SPI) {
+			snprintf(devname, sizeof(devname), "%s.%u",
+				dev_name(&port->spi_mstr->dev),
+				port->chip_select[dev->reg]);
+			regulator.dev_name  = kmemdup(devname, MIKROBUS_NAME_SIZE, GFP_KERNEL);
+		} else if (dev->protocol == GREYBUS_PROTOCOL_RAW) {
+			snprintf(devname, sizeof(devname), "%s.%u",
+				 dev->drv_name, dev->reg);
+			regulator.dev_name  = kmemdup(devname, MIKROBUS_NAME_SIZE, GFP_KERNEL);
+		} else
+			regulator.dev_name  = dev->drv_name;
+
+		for (i = 0; i < dev->num_regulators; i++) {
+			val = dev->regulators[i].value.u64_data;
+			regulator.supply = kmemdup(dev->regulators[i].name, MIKROBUS_NAME_SIZE, GFP_KERNEL);
+			dev_info(&port->dev, " adding fixed regulator %llu uv, %s for %s\n",
+				*val, regulator.supply, regulator.dev_name);
+			regulator_register_always_on(0, dev->regulators[i].name, &regulator,
+				     1, *val);
+		}
+	}
+	switch (dev->protocol) {
+	case GREYBUS_PROTOCOL_SPI:
+		spi = spi_alloc_device(port->spi_mstr);
+		if (!spi)
+			return -ENOMEM;
+		strncpy(spi->modalias, dev->drv_name, sizeof(spi->modalias) - 1);
+		if (dev->irq)
+			spi->irq = mikrobus_irq_get(port, dev->irq, dev->irq_type);
+		if (dev->properties)
+			device_add_properties(&spi->dev, dev->properties);
+		spi->chip_select = port->chip_select[dev->reg];
+		spi->max_speed_hz = dev->max_speed_hz;
+		spi->mode = dev->mode;
+		if (dev->clocks) {
+			for (i = 0; i < dev->num_clocks; i++) {
+				val = dev->clocks[i].value.u64_data;
+				dev_info(&port->dev, " adding fixed clock %s, %llu hz\n",
+					dev->clocks[i].name, *val);
+				//failing: under debug
+				clk_register_fixed_rate(&spi->dev, dev->clocks[i].name, devname, 0, *val);
+			}
+		}
+		spi_add_device(spi);
+		dev->dev_client = (void *) spi;
+		break;
+	case GREYBUS_PROTOCOL_I2C:
+		i2c = kzalloc(sizeof(*i2c), GFP_KERNEL);
+		if (!i2c)
+			return -ENOMEM;
+		strncpy(i2c->type, dev->drv_name, sizeof(i2c->type) - 1);
+		if (dev->irq)
+			i2c->irq = mikrobus_irq_get(port, dev->irq, dev->irq_type);
+		if (dev->properties)
+			i2c->fwnode = fwnode_create_software_node(dev->properties, NULL);
+		i2c->addr = dev->reg;
+		dev->dev_client = (void *) i2c_new_client_device(port->i2c_adap, i2c);
+		break;
+	case GREYBUS_PROTOCOL_RAW:
+		pdev = platform_device_alloc(dev->drv_name, 0);
+		if (!pdev)
+			return -ENOMEM;
+		if (dev->properties)
+			device_create_managed_software_node(&pdev->dev, dev->properties, NULL);
+		dev->dev_client = pdev;
+		platform_device_add(dev->dev_client);
+		break;
+	case GREYBUS_PROTOCOL_UART:
+		serdev = serdev_device_alloc(port->ser_ctrl);
+		if (!serdev)
+			return -ENOMEM;
+		strncpy(serdev->modalias, dev->drv_name, sizeof(serdev->modalias) - 1);
+		if (dev->properties)
+			device_add_properties(&serdev->dev, dev->properties);
+		dev->dev_client = serdev;
+		serdev_device_add(serdev);
+		break;
+	break;
+	default:
+	return -EINVAL;
+	}
+	return 0;
+}
+
+static void mikrobus_device_unregister(struct mikrobus_port *port,
+					struct board_device_info *dev, char *board_name)
+{
+	dev_info(&port->dev, "removing device %s\n", dev->drv_name);
+	if (dev->gpio_lookup) {
+		gpiod_remove_lookup_table(dev->gpio_lookup);
+		kfree(dev->gpio_lookup);
+	}
+	kfree(dev->properties);
+	switch (dev->protocol) {
+	case GREYBUS_PROTOCOL_SPI:
+		spi_unregister_device((struct spi_device *)dev->dev_client);
+		break;
+	case GREYBUS_PROTOCOL_I2C:
+		i2c_unregister_device((struct i2c_client *)dev->dev_client);
+		break;
+	case GREYBUS_PROTOCOL_RAW:
+		platform_device_unregister((struct platform_device  *)dev->dev_client);
+		break;
+	case GREYBUS_PROTOCOL_UART:
+		serdev_device_remove((struct serdev_device  *)dev->dev_client);
+		break;
+	}
+}
+
+int mikrobus_board_register(struct mikrobus_port *port,	struct addon_board_info *board)
+{
+	struct board_device_info *devinfo;
+	struct board_device_info *next;
+	int retval;
+	int i;
+
+	if (WARN_ON(list_empty(&board->devices)))
+		return false;
+	if (port->pinctrl) {
+		retval = mikrobus_port_pinctrl_setup(port, board);
+		if (retval)
+			dev_err(&port->dev, "failed to setup pinctrl state [%d]", retval);
+
+	}
+	if (port->gpios) {
+		for (i = 0; i < port->gpios->ndescs; i++) {
+			retval = mikrobus_gpio_setup(port->gpios->desc[i], board->pin_state[i]);
+			if (retval)
+				dev_err(&port->dev, "failed to setup gpio %d, state %d",
+									i, board->pin_state[i]);
+		}
+	}
+	list_for_each_entry_safe(devinfo, next, &board->devices, links)
+		mikrobus_device_register(port, devinfo, board->name);
+	port->board = board;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mikrobus_board_register);
+
+void mikrobus_board_unregister(struct mikrobus_port *port, struct addon_board_info *board)
+{
+	struct board_device_info *devinfo;
+	struct board_device_info *next;
+
+	if (WARN_ON(list_empty(&board->devices)))
+		return;
+	port->board = NULL;
+	list_for_each_entry_safe(devinfo, next, &board->devices, links)
+		mikrobus_device_unregister(port, devinfo, board->name);
+	mikrobus_board_device_release_all(board);
+	kfree(board);
+	port->board = NULL;
+}
+EXPORT_SYMBOL_GPL(mikrobus_board_unregister);
+
+static int mikrobus_port_id_eeprom_probe(struct mikrobus_port *port)
+{
+	struct w1_bus_master *bm;
+	struct gpiod_lookup_table *lookup;
+	struct platform_device *mikrobus_id_eeprom_w1_device;
+	static struct w1_gpio_platform_data *mikrobus_id_eeprom_w1_pdata;
+	char devname[MIKROBUS_NAME_SIZE];
+	char drvname[MIKROBUS_NAME_SIZE] = "w1-gpio";
+	int retval;
+
+	mikrobus_id_eeprom_w1_device = kzalloc(sizeof(*mikrobus_id_eeprom_w1_device), GFP_KERNEL);
+	if (!mikrobus_id_eeprom_w1_device)
+		return -ENOMEM;
+
+	mikrobus_id_eeprom_w1_pdata = kzalloc(sizeof(*mikrobus_id_eeprom_w1_pdata), GFP_KERNEL);
+	if (!mikrobus_id_eeprom_w1_pdata)
+		return -ENOMEM;
+
+	mikrobus_id_eeprom_w1_pdata->pullup_gpiod = NULL;
+	mikrobus_id_eeprom_w1_device->name = kmemdup(drvname, MIKROBUS_NAME_SIZE, GFP_KERNEL);
+	mikrobus_id_eeprom_w1_device->dev.platform_data = mikrobus_id_eeprom_w1_pdata;
+
+	sprintf(port->pinctrl_selected[MIKROBUS_PINCTRL_SPI], "%s_%s",
+			MIKROBUS_PINCTRL_STR[MIKROBUS_PINCTRL_SPI], MIKROBUS_PINCTRL_STATE_GPIO);
+
+	retval = mikrobus_port_pinctrl_select(port);
+	/* set RST LOW */
+	gpiod_direction_output(port->gpios->desc[MIKROBUS_PIN_RST], 0);
+
+	lookup = kzalloc(struct_size(lookup, table, 1),
+					GFP_KERNEL);
+	if (!lookup)
+			return -ENOMEM;
+	snprintf(devname, sizeof(devname), "%s.%u",
+				mikrobus_id_eeprom_w1_device->name,
+				port->id);
+	mikrobus_id_eeprom_w1_device->id = port->id;
+	lookup->dev_id = kmemdup(devname, MIKROBUS_NAME_SIZE, GFP_KERNEL);
+	lookup->table[0].key = mikrobus_gpio_chip_name_get(port,
+						MIKROBUS_PIN_CS);
+	lookup->table[0].flags = GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN;
+	lookup->table[0].chip_hwnum = mikrobus_gpio_hwnum_get(port,
+						MIKROBUS_PIN_CS);
+	gpiod_add_lookup_table(lookup);
+	platform_device_register(mikrobus_id_eeprom_w1_device);
+	port->w1_gpio = mikrobus_id_eeprom_w1_device;
+	bm = (struct w1_bus_master *) platform_get_drvdata(mikrobus_id_eeprom_w1_device);
+	if(bm) {
+		port->w1_master = w1_find_master_device(bm);
+		if(!port->w1_master){
+			dev_err(&port->dev, "failed to find W1 GPIO master, port [%s]\n",
+									port->name);
+			gpiod_remove_lookup_table(lookup);
+			kfree(lookup);
+			return -ENODEV;
+		}
+	}
+	return 0;
+}
+
+int mikrobus_port_register(struct mikrobus_port *port)
+{
+	struct device *dev = &port->dev;
+	int retval;
+	int id;
+
+	if (WARN_ON(!is_registered))
+		return -EAGAIN;
+
+	if (dev->of_node) {
+		id = of_alias_get_id(dev->of_node, "mikrobus");
+		if (id >= 0) {
+			port->id = id;
+			mutex_lock(&core_lock);
+			id = idr_alloc(&mikrobus_port_idr, port, port->id, port->id + 1,
+										GFP_KERNEL);
+			mutex_unlock(&core_lock);
+			if (WARN(id < 0, "couldn't get idr"))
+				return id == -ENOSPC ? -EBUSY : id;
+		}
+	} else {
+		mutex_lock(&core_lock);
+		id = idr_alloc(&mikrobus_port_idr, port, __mikrobus_first_dynamic_bus_num, 0,
+											GFP_KERNEL);
+		mutex_unlock(&core_lock);
+		if (id < 0)
+			return id;
+		port->id = id;
+	}
+	port->dev.bus = &mikrobus_bus_type;
+	port->dev.type = &mikrobus_port_type;
+	strncpy(port->name, "mikrobus-port", sizeof(port->name) - 1);
+	dev_set_name(&port->dev, "mikrobus-%d", port->id);
+	pr_info("registering port mikrobus-%d ", port->id);
+	retval = device_register(&port->dev);
+	if (retval) {
+		pr_err("port '%d': can't register device (%d)", port->id, retval);
+		put_device(&port->dev);
+		return retval;
+	}
+	retval = class_compat_create_link(mikrobus_port_compat_class, &port->dev,
+								port->dev.parent);
+	if (retval)
+		dev_warn(&port->dev, "failed to create compatibility class link\n");
+	if (!port->w1_master && !port->disable_eeprom) {
+		dev_info(&port->dev, "mikrobus port %d eeprom empty probing default eeprom\n",
+											port->id);
+		mutex_lock(&core_lock);
+		retval = mikrobus_port_id_eeprom_probe(port);
+		mutex_unlock(&core_lock);
+	}
+	return retval;
+}
+EXPORT_SYMBOL_GPL(mikrobus_port_register);
+
+void mikrobus_port_delete(struct mikrobus_port *port)
+{
+	struct mikrobus_port *found;
+
+	mutex_lock(&core_lock);
+	found = idr_find(&mikrobus_port_idr, port->id);
+	mutex_unlock(&core_lock);
+	if (found != port) {
+		pr_err("port [%s] not registered", port->name);
+		return;
+	}
+	if (port->board) {
+		dev_err(&port->dev, "attempting to delete port with registered boards, port [%s]\n",
+									port->name);
+		return;
+	}
+
+	if (port->eeprom) {
+		nvmem_device_put(port->eeprom);
+		platform_device_unregister(port->w1_gpio);
+	}
+
+	class_compat_remove_link(mikrobus_port_compat_class, &port->dev,
+							port->dev.parent);
+	device_unregister(&port->dev);
+	mutex_lock(&core_lock);
+	idr_remove(&mikrobus_port_idr, port->id);
+	mutex_unlock(&core_lock);
+	memset(&port->dev, 0, sizeof(port->dev));
+}
+EXPORT_SYMBOL_GPL(mikrobus_port_delete);
+
+int mikrobus_port_gb_register(struct gbphy_host *host, void *manifest_blob, size_t manifest_size)
+{
+	struct gb_bundle *bundle = host->bundle;
+	struct addon_board_info *board;
+	struct gbphy_device *gbphy_dev, *temp;
+	struct gb_i2c_device *gb_i2c_dev;
+	struct gb_connection *spi_connection;
+	struct gb_gpio_controller *ggc;
+	struct mikrobus_port *port;
+	// struct gpio_desc *desc;
+	struct gpio_descs *descs;
+	int retval;
+
+	if (bundle->num_cports == 0)
+		return -ENODEV;
+	
+	port = kzalloc(sizeof(*port), GFP_KERNEL);
+	if (!port)
+		return -ENOMEM;
+
+	pr_info("mikrobus gb_probe , num cports= %zu, manifest_size %u \n", bundle->num_cports, manifest_size);
+	list_for_each_entry_safe(gbphy_dev, temp, &host->devices, list) {
+		pr_info("protocol added %d", gbphy_dev->cport_desc->protocol_id);
+		if(gbphy_dev->cport_desc->protocol_id != GREYBUS_PROTOCOL_I2C && 
+			gbphy_dev->cport_desc->protocol_id != GREYBUS_PROTOCOL_SPI &&
+			gbphy_dev->cport_desc->protocol_id != GREYBUS_PROTOCOL_GPIO){
+			pr_info("only I2C , GPIO and SPI Protocol Currently Supported");
+			kfree(port);
+			continue;
+		}
+		port->dev.parent = &gbphy_dev->dev;
+		if(gbphy_dev->cport_desc->protocol_id == GREYBUS_PROTOCOL_I2C){
+			gb_i2c_dev = (struct gb_i2c_device *) gb_gbphy_get_data(gbphy_dev);
+			port->i2c_adap = &gb_i2c_dev->adapter;
+			
+		}
+		else if(gbphy_dev->cport_desc->protocol_id == GREYBUS_PROTOCOL_SPI){
+			spi_connection = gb_gbphy_get_data(gbphy_dev);
+			port->spi_mstr = (struct spi_master *)gb_connection_get_data(spi_connection);
+		}
+		else if(gbphy_dev->cport_desc->protocol_id == GREYBUS_PROTOCOL_GPIO){
+			ggc = (struct gb_gpio_controller *) gb_gbphy_get_data(gbphy_dev);
+			port->gpios = kzalloc(struct_size(descs, desc, 12), GFP_KERNEL);
+			port->gpios->desc[0] = gpio_to_desc( ggc->chip.base + 7);//PWM GPIO
+			port->gpios->desc[1] = gpio_to_desc( ggc->chip.base + 20); //INT GPIO
+			port->gpios->desc[10] = gpio_to_desc( ggc->chip.base + 19); //RST GPIO
+		}
+	}
+	port->disable_eeprom = 1;
+	retval = mikrobus_port_register(port);
+	if (retval) {
+		pr_err("port : can't register port [%d]\n", retval);
+	}
+
+	board = kzalloc(sizeof(*board), GFP_KERNEL);
+	if (!board) {
+		retval = -ENOMEM;
+		goto err_free_buf;
+	}
+	INIT_LIST_HEAD(&board->manifest_descs);
+	INIT_LIST_HEAD(&board->devices);
+	retval = mikrobus_manifest_parse(board, manifest_blob, manifest_size);
+	if (!retval) {
+		dev_err(&port->dev, "failed to parse manifest, size %u\n",
+			manifest_size);
+		retval = -EINVAL;
+		goto err_free_board;
+	}
+	retval = mikrobus_board_register(port, board);
+	if (retval) {
+		dev_err(&port->dev, "failed to register board %s\n",
+			board->name);
+		goto err_free_board;
+	}
+	return 0;
+err_free_board:
+	kfree(board);
+err_free_buf:
+	kfree(manifest_blob);
+	return retval;
+}
+EXPORT_SYMBOL_GPL(mikrobus_port_gb_register);
+
+static int mikrobus_port_probe_pinctrl_setup(struct mikrobus_port *port)
+{
+	struct pinctrl_state *state;
+	struct device *dev = port->dev.parent;
+	int retval, i;
+
+	state = pinctrl_lookup_state(port->pinctrl, PINCTRL_STATE_DEFAULT);
+	if (!IS_ERR(state)) {
+		retval = pinctrl_select_state(port->pinctrl, state);
+		if (retval != 0) {
+			dev_err(dev, "Failed to select state %s\n",
+				PINCTRL_STATE_DEFAULT);
+			return retval;
+		}
+	} else {
+		dev_err(dev, "failed to find state %s\n",
+			PINCTRL_STATE_DEFAULT);
+		return PTR_ERR(state);
+	}
+
+	for (i = 0; i < MIKROBUS_NUM_PINCTRL_STATE; i++) {
+		port->pinctrl_selected[i] =
+				kmalloc(MIKROBUS_PINCTRL_NAME_SIZE, GFP_KERNEL);
+		sprintf(port->pinctrl_selected[i], "%s_%s",
+			MIKROBUS_PINCTRL_STR[i], PINCTRL_STATE_DEFAULT);
+	}
+
+	retval = mikrobus_port_pinctrl_select(port);
+	if (retval)
+		dev_err(dev, "failed to select pinctrl states [%d]", retval);
+	return retval;
+}
+
+static int mikrobus_port_probe(struct platform_device *pdev)
+{
+	struct mikrobus_port *port;
+	struct device *dev = &pdev->dev;
+	struct device_node *i2c_adap_np;
+	struct device_node *uart_np;
+	int retval;
+	u32 val;
+
+	port = kzalloc(sizeof(*port), GFP_KERNEL);
+	if (!port)
+		return -ENOMEM;
+
+	i2c_adap_np = of_parse_phandle(dev->of_node, "i2c-adapter", 0);
+	if (!i2c_adap_np) {
+		dev_err(dev, "cannot parse i2c-adapter\n");
+		retval = -ENODEV;
+		goto err_port;
+	}
+	port->i2c_adap = of_find_i2c_adapter_by_node(i2c_adap_np);
+	of_node_put(i2c_adap_np);
+	retval = device_property_read_u32(dev, "spi-master", &val);
+	if (retval) {
+		dev_err(dev, "failed to get spi-master [%d]\n", retval);
+		goto err_port;
+	}
+	port->spi_mstr = spi_busnum_to_master(val);
+	retval = device_property_read_u32_array(dev, "spi-cs",
+						port->chip_select, 2);
+	if (retval) {
+		dev_err(dev, "failed to get spi-cs [%d]\n", retval);
+		goto err_port;
+	}
+	uart_np = of_parse_phandle(dev->of_node, "uart", 0);
+	if (!uart_np) {
+		dev_err(dev, "cannot parse uart\n");
+		retval = -ENODEV;
+		goto err_port;
+	}
+	port->ser_ctrl = of_find_serdev_controller_by_node(uart_np);
+	of_node_put(uart_np);
+	//port->pwm = devm_pwm_get(dev, NULL);
+	//if (IS_ERR(port->pwm)) {
+	//	retval = PTR_ERR(port->pwm);
+	//	if (retval != -EPROBE_DEFER)
+	//		dev_err(dev, "failed to request PWM device [%d]\n",
+	//			retval);
+	//	goto err_port;
+	//}
+	port->gpios = gpiod_get_array(dev, "mikrobus", GPIOD_OUT_LOW);
+	if (IS_ERR(port->gpios)) {
+		retval = PTR_ERR(port->gpios);
+		dev_err(dev, "failed to get gpio array [%d]\n", retval);
+		goto err_port;
+	}
+	port->pinctrl = devm_pinctrl_get(dev);
+	if (IS_ERR(port->pinctrl)) {
+		retval = PTR_ERR(port->pinctrl);
+		dev_err(dev, "failed to get pinctrl [%d]\n", retval);
+		goto err_port;
+	}
+	port->dev.parent = dev;
+	port->dev.of_node = pdev->dev.of_node;
+
+	retval = mikrobus_port_probe_pinctrl_setup(port);
+	if (retval) {
+		dev_err(dev, "failed to setup pinctrl [%d]\n", retval);
+		goto err_port;
+	}
+
+	retval = mikrobus_port_register(port);
+	if (retval) {
+		pr_err("port : can't register port [%d]\n", retval);
+		goto err_port;
+	}
+	platform_set_drvdata(pdev, port);
+	return 0;
+err_port:
+	kfree(port);
+	return retval;
+}
+
+static int mikrobus_port_remove(struct platform_device *pdev)
+{
+	struct mikrobus_port	*port = platform_get_drvdata(pdev);
+
+	mikrobus_port_delete(port);
+	return 0;
+}
+
+static const struct of_device_id mikrobus_port_of_match[] = {
+	{.compatible = "linux,mikrobus"},
+	{},
+};
+MODULE_DEVICE_TABLE(of, mikrobus_port_of_match);
+
+static struct platform_driver mikrobus_port_driver = {
+	.probe = mikrobus_port_probe,
+	.remove = mikrobus_port_remove,
+	.driver = {
+		.name = "mikrobus",
+		.of_match_table = of_match_ptr(mikrobus_port_of_match),
+	},
+};
+
+static int __init mikrobus_init(void)
+{
+	int retval;
+
+	retval = bus_register(&mikrobus_bus_type);
+	if (retval) {
+		pr_err("bus_register failed (%d)\n", retval);
+		return retval;
+	}
+	mikrobus_port_compat_class = class_compat_register("mikrobus-port");
+	if (!mikrobus_port_compat_class) {
+		pr_err("class_compat register failed (%d)\n", retval);
+		retval = -ENOMEM;
+		goto class_err;
+	}
+	retval = of_alias_get_highest_id("mikrobus");
+	if (retval >= __mikrobus_first_dynamic_bus_num)
+		__mikrobus_first_dynamic_bus_num = retval + 1;
+
+	is_registered = true;
+	retval = platform_driver_register(&mikrobus_port_driver);
+	if (retval)
+		pr_err("driver register failed [%d]\n", retval);
+	return retval;
+
+class_err:
+	bus_unregister(&mikrobus_bus_type);
+	idr_destroy(&mikrobus_port_idr);
+	is_registered = false;
+	return retval;
+}
+subsys_initcall(mikrobus_init);
+
+static void __exit mikrobus_exit(void)
+{
+	platform_driver_unregister(&mikrobus_port_driver);
+	bus_unregister(&mikrobus_bus_type);
+	class_compat_unregister(mikrobus_port_compat_class);
+	idr_destroy(&mikrobus_port_idr);
+}
+module_exit(mikrobus_exit);
+
+MODULE_AUTHOR("Vaishnav M A <vaishnav@beagleboard.org>");
+MODULE_DESCRIPTION("mikroBUS main module");
+MODULE_LICENSE("GPL v2");
diff -Naur --no-dereference a/drivers/misc/mikrobus/mikrobus_id.c b/drivers/misc/mikrobus/mikrobus_id.c
--- a/drivers/misc/mikrobus/mikrobus_id.c	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/mikrobus/mikrobus_id.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,222 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * mikrobus_id.c - w1 mikroBUS ID family EEPROM driver
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+
+#include <linux/w1.h>
+#include <linux/nvmem-provider.h>
+
+#include <linux/mikrobus.h>
+
+#define W1_EEPROM_MIKROBUS_SECONDARY_ID	0x4C
+#define W1_EEPROM_MIKROBUS_ID	0x43
+#define W1_MIKROBUS_ID_EEPROM_SIZE	 0x0A00
+#define W1_MIKROBUS_ID_EEPROM_SECONDARY_SIZE	 0x0200
+#define W1_MIKROBUS_ID_EEPROM_SECONDARY_PAGE_SIZE	32
+#define W1_MIKROBUS_ID_EEPROM_SCRATCH_SIZE	32
+#define W1_MIKROBUS_ID_EEPROM_VERIFY_SCRATCH_SIZE	35
+#define W1_MIKROBUS_ID_READ_EEPROM	0xF0
+#define W1_MIKROBUS_ID_READ_SECONDARY_EEPROM 0x69
+#define W1_MIKROBUS_ID_RELEASE_SECONDARY_EEPROM 0xAA
+#define W1_MIKROBUS_ID_EEPROM_READ_RETRIES	10
+#define W1_MIKROBUS_ID_EEPROM_TPROG_MS		20
+#define MIKROBUS_ID_USER_EEPROM_ADDR	0x0A0A
+
+static int w1_mikrobus_id_readblock(struct w1_slave *sl, int off, int count, char *buf)
+{
+	u8 wrbuf[3];
+	u8 *cmp;
+	int tries = W1_MIKROBUS_ID_EEPROM_READ_RETRIES;
+	
+	do {
+		wrbuf[0] = W1_MIKROBUS_ID_READ_EEPROM;
+		wrbuf[1] = off & 0xFF;
+		wrbuf[2] = off >> 8;
+
+		if (w1_reset_select_slave(sl))
+				return -1;
+		w1_write_block(sl->master, wrbuf, 3);
+		w1_read_block(sl->master, buf, count);
+
+		if (w1_reset_select_slave(sl))
+				return -1;
+		cmp = kzalloc(count, GFP_KERNEL);
+		if (!cmp)
+			return -ENOMEM;
+		w1_write_block(sl->master, wrbuf, 3);
+		w1_read_block(sl->master, cmp, count);
+		if (!memcmp(cmp, buf, count)){
+			kfree(cmp);
+			return 0;
+		}
+	} while (--tries);
+
+	dev_err(&sl->dev, "proof reading failed %d times\n",
+			W1_MIKROBUS_ID_EEPROM_READ_RETRIES);
+	kfree(cmp);
+	return -EIO;
+}
+
+static int w1_mikrobus_id_readpage_secondary(struct w1_slave *sl, int pageaddr, char *buf)
+{
+	u8 crc_rdbuf[2];
+
+	if (w1_reset_select_slave(sl))
+				return -1;
+	w1_write_8(sl->master, W1_MIKROBUS_ID_READ_SECONDARY_EEPROM);
+	w1_write_8(sl->master, pageaddr);
+	w1_read_block(sl->master, crc_rdbuf, 2);
+	w1_write_8(sl->master, W1_MIKROBUS_ID_RELEASE_SECONDARY_EEPROM);
+	msleep(10);
+	w1_read_block(sl->master, crc_rdbuf, 1);
+	w1_read_block(sl->master, buf, W1_MIKROBUS_ID_EEPROM_SCRATCH_SIZE);
+	w1_read_block(sl->master, crc_rdbuf, 2);
+	return 0;
+}
+
+static int w1_mikrobus_id_readbuf_secondary(struct w1_slave *sl, int count, char *buf)
+{
+	u8 pageaddr = 0;
+	int iter, index, ret;
+	int	len = count - (count % W1_MIKROBUS_ID_EEPROM_SCRATCH_SIZE);
+	u8 temp_rdbuf[W1_MIKROBUS_ID_EEPROM_SECONDARY_PAGE_SIZE];
+
+	while(len > 0) {			
+			ret = w1_mikrobus_id_readpage_secondary(sl, pageaddr, buf + (W1_MIKROBUS_ID_EEPROM_SCRATCH_SIZE*pageaddr));
+			pageaddr += 1;
+			len -= W1_MIKROBUS_ID_EEPROM_SCRATCH_SIZE;
+	}
+
+	if(count % W1_MIKROBUS_ID_EEPROM_SCRATCH_SIZE){
+			ret = w1_mikrobus_id_readpage_secondary(sl, pageaddr, temp_rdbuf);
+			for(iter = W1_MIKROBUS_ID_EEPROM_SCRATCH_SIZE*pageaddr, index=0; iter < count; iter++, index++)
+				buf[iter] = temp_rdbuf[index];
+	}
+	return ret;
+}
+
+static int w1_mikrobus_id_readblock_secondary(struct w1_slave *sl, int off, int count, char *buf)
+{
+	u8 *cmp;
+	int tries = W1_MIKROBUS_ID_EEPROM_READ_RETRIES;
+
+	if(off == MIKROBUS_ID_USER_EEPROM_ADDR && count == 1) {
+		buf[0] = 0;
+		return 0;
+	}
+
+	do {	
+		w1_mikrobus_id_readbuf_secondary(sl, count, buf);
+		cmp = kzalloc(count, GFP_KERNEL);
+		if (!cmp)
+			return -ENOMEM;		
+		w1_mikrobus_id_readbuf_secondary(sl, count, cmp);
+		if (!memcmp(cmp, buf, count)){
+			kfree(cmp);
+			return 0;
+		}
+	} while (--tries);
+
+	kfree(cmp);
+	return -EINVAL;
+}
+
+static int w1_mikrobus_id_nvmem_read(void *priv, unsigned int off, void *buf, size_t count)
+{
+	struct w1_slave *sl = priv;
+	int ret;
+
+	mutex_lock(&sl->master->bus_mutex);
+	if (sl->family->fid == W1_EEPROM_MIKROBUS_SECONDARY_ID)
+		ret = w1_mikrobus_id_readblock_secondary(sl, off, count, buf);
+	else
+		ret = w1_mikrobus_id_readblock(sl, off, count, buf);
+	mutex_unlock(&sl->master->bus_mutex);
+	
+	return ret;
+}
+
+static int w1_mikrobus_id_add_slave(struct w1_slave *sl)
+{
+	struct nvmem_device *nvmem;
+	struct mikrobus_port *port;
+	struct nvmem_config nvmem_cfg = {
+		.dev = &sl->dev,
+		.reg_read = w1_mikrobus_id_nvmem_read,
+		.type = NVMEM_TYPE_EEPROM,
+		.read_only = true,
+		.word_size = 1,
+		.stride = 1,
+		.size = (sl->family->fid == W1_EEPROM_MIKROBUS_SECONDARY_ID) ? 
+		 W1_MIKROBUS_ID_EEPROM_SECONDARY_SIZE: W1_MIKROBUS_ID_EEPROM_SIZE,
+		.priv = sl,
+	};
+
+	port = mikrobus_find_port_by_w1_master(sl->master);
+	if(!port)
+		return -ENODEV;
+
+	nvmem_cfg.name = port->name;
+	nvmem = devm_nvmem_register(&sl->dev, &nvmem_cfg);
+	port->eeprom = nvmem;
+	mikrobus_port_scan_eeprom(port);
+
+	return PTR_ERR_OR_ZERO(nvmem);
+}
+
+static struct w1_family_ops w1_family_mikrobus_id_fops = {
+	.add_slave		= w1_mikrobus_id_add_slave,
+};
+
+static struct w1_family w1_family_mikrobus_id = {
+	.fid = W1_EEPROM_MIKROBUS_ID,
+	.fops = &w1_family_mikrobus_id_fops,
+};
+
+static struct w1_family w1_family_mikrobus_id_alternate = {
+	.fid = W1_EEPROM_MIKROBUS_SECONDARY_ID,
+	.fops = &w1_family_mikrobus_id_fops,
+};
+
+static int __init w1_mikrobusid_init(void)
+{
+	int err;
+
+	err = w1_register_family(&w1_family_mikrobus_id);
+	if (err)
+		return err;
+
+	err = w1_register_family(&w1_family_mikrobus_id_alternate);
+	if (err)
+		goto err_mikrobusidinit;
+
+
+	return 0;
+
+err_mikrobusidinit:
+	w1_unregister_family(&w1_family_mikrobus_id);
+	return err;
+}
+
+static void __exit w1_mikrobusid_exit(void)
+{
+	w1_unregister_family(&w1_family_mikrobus_id);
+	w1_unregister_family(&w1_family_mikrobus_id_alternate);
+}
+
+module_init(w1_mikrobusid_init);
+module_exit(w1_mikrobusid_exit);
+
+MODULE_AUTHOR("Vaishnav M A <vaishnav@beagleboard.org>");
+MODULE_DESCRIPTION("w1 family ac driver for mikroBUS ID EEPROM");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("w1-family-" __stringify(W1_EEPROM_MIKROBUS_ID));
+MODULE_ALIAS("w1-family-" __stringify(W1_EEPROM_MIKROBUS_SECONDARY_ID));
diff -Naur --no-dereference a/drivers/misc/mikrobus/mikrobus_manifest.c b/drivers/misc/mikrobus/mikrobus_manifest.c
--- a/drivers/misc/mikrobus/mikrobus_manifest.c	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/mikrobus/mikrobus_manifest.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,477 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * mikroBUS manifest parsing, an
+ * extension to Greybus Manifest Parsing
+ * under drivers/greybus/manifest.c
+ *
+ * Copyright 2014-2015 Google Inc.
+ * Copyright 2014-2015 Linaro Ltd.
+ */
+
+#define pr_fmt(fmt) "mikrobus_manifest:%s: " fmt, __func__
+
+#include <linux/bits.h>
+#include <linux/types.h>
+#include <linux/property.h>
+#include <linux/greybus/greybus_manifest.h>
+
+#include "mikrobus_manifest.h"
+
+struct manifest_desc {
+	struct list_head links;
+	size_t size;
+	void *data;
+	enum greybus_descriptor_type type;
+};
+
+static void manifest_descriptor_release_all(struct addon_board_info *board)
+{
+	struct manifest_desc *descriptor;
+	struct manifest_desc *next;
+
+	list_for_each_entry_safe(descriptor, next, &board->manifest_descs, links) {
+		list_del(&descriptor->links);
+		kfree(descriptor);
+	}
+}
+
+static int board_descriptor_add(struct addon_board_info *board, struct greybus_descriptor *desc,
+				size_t size)
+{
+	struct greybus_descriptor_header *desc_header = &desc->header;
+	struct manifest_desc *descriptor;
+	size_t desc_size;
+	size_t expected_size;
+
+	if (size < sizeof(*desc_header)) {
+		pr_err("short descriptor (%zu < %zu)", size, sizeof(*desc_header));
+		return -EINVAL;
+	}
+	desc_size = le16_to_cpu(desc_header->size);
+	if (desc_size > size) {
+		pr_err("incorrect descriptor size (%zu != %zu)", size, desc_size);
+		return -EINVAL;
+	}
+	expected_size = sizeof(*desc_header);
+	switch (desc_header->type) {
+	case GREYBUS_TYPE_STRING:
+		expected_size += sizeof(struct greybus_descriptor_string);
+		expected_size += desc->string.length;
+		expected_size = ALIGN(expected_size, 4);
+		break;
+	case GREYBUS_TYPE_PROPERTY:
+		expected_size += sizeof(struct greybus_descriptor_property);
+		expected_size += desc->property.length;
+		expected_size = ALIGN(expected_size, 4);
+		break;
+	case GREYBUS_TYPE_DEVICE:
+		expected_size += sizeof(struct greybus_descriptor_device);
+		break;
+	case GREYBUS_TYPE_MIKROBUS:
+		expected_size += sizeof(struct greybus_descriptor_mikrobus);
+		break;
+	case GREYBUS_TYPE_INTERFACE:
+		expected_size += sizeof(struct greybus_descriptor_interface);
+		break;
+	case GREYBUS_TYPE_CPORT:
+		expected_size += sizeof(struct greybus_descriptor_cport);
+		break;
+	case GREYBUS_TYPE_BUNDLE:
+		expected_size += sizeof(struct greybus_descriptor_bundle);
+		break;
+	case GREYBUS_TYPE_INVALID:
+	default:
+		pr_err("invalid descriptor type %d", desc_header->type);
+		return -EINVAL;
+	}
+
+	descriptor = kzalloc(sizeof(*descriptor), GFP_KERNEL);
+	if (!descriptor)
+		return -ENOMEM;
+	descriptor->size = desc_size;
+	descriptor->data = (char *)desc + sizeof(*desc_header);
+	descriptor->type = desc_header->type;
+	list_add_tail(&descriptor->links, &board->manifest_descs);
+	return desc_size;
+}
+
+static char *mikrobus_string_get(struct addon_board_info *board, u8 string_id)
+{
+	struct greybus_descriptor_string *desc_string;
+	struct manifest_desc *descriptor;
+	bool found = false;
+	char *string;
+
+	if (!string_id)
+		return NULL;
+
+	list_for_each_entry(descriptor, &board->manifest_descs, links) {
+		if (descriptor->type != GREYBUS_TYPE_STRING)
+			continue;
+		desc_string = descriptor->data;
+		if (desc_string->id == string_id) {
+			found = true;
+			break;
+		}
+	}
+	if (!found)
+		return ERR_PTR(-ENOENT);
+	string = kmemdup(&desc_string->string, desc_string->length + 1, GFP_KERNEL);
+	if (!string)
+		return ERR_PTR(-ENOMEM);
+	string[desc_string->length] = '\0';
+	return string;
+}
+
+static void mikrobus_state_get(struct addon_board_info *board)
+{
+	struct greybus_descriptor_mikrobus *mikrobus;
+	struct greybus_descriptor_interface *interface;
+	struct manifest_desc *descriptor;
+	bool found = false;
+	int i;
+
+	list_for_each_entry(descriptor, &board->manifest_descs, links) {
+		if (descriptor->type == GREYBUS_TYPE_MIKROBUS) {
+			mikrobus = descriptor->data;
+			found = true;
+			break;
+		}
+	}
+	if (!found) {
+		pr_err("mikrobus descriptor not found");
+		return;
+	}
+	for (i = 0; i < MIKROBUS_PORT_PIN_COUNT; i++)
+		board->pin_state[i] =  mikrobus->pin_state[i];
+
+	found = false;
+	list_for_each_entry(descriptor, &board->manifest_descs, links) {
+		if (descriptor->type == GREYBUS_TYPE_INTERFACE) {
+			interface = descriptor->data;
+			found = true;
+			break;
+		}
+	}
+	if (!found) {
+		pr_err("interface descriptor not found");
+		return;
+	}
+	board->name = mikrobus_string_get(board, interface->product_stringid);
+}
+
+static struct property_entry *
+mikrobus_property_entry_get(struct addon_board_info *board, u8 *prop_link,
+			    int num_properties)
+{
+	struct greybus_descriptor_property *desc_property;
+	struct manifest_desc *descriptor;
+	struct property_entry *properties;
+	bool found = false;
+	char *prop_name;
+	u64 *val_u64;
+	u32 *val_u32;
+	u16 *val_u16;
+	u8 *val_u8;
+	int i;
+
+	properties = kcalloc(num_properties, sizeof(*properties), GFP_KERNEL);
+	if (!properties)
+		return ERR_PTR(-ENOMEM);
+	for (i = 0; i < num_properties; i++) {
+		list_for_each_entry(descriptor, &board->manifest_descs, links) {
+			if (descriptor->type != GREYBUS_TYPE_PROPERTY)
+				continue;
+			desc_property = descriptor->data;
+			if (desc_property->id == prop_link[i]) {
+				found = true;
+				break;
+			}
+		}
+		if (!found) {
+			kfree(properties);
+			return ERR_PTR(-ENOENT);
+		}
+		prop_name = mikrobus_string_get(board, desc_property->propname_stringid);
+		if (!prop_name) {
+			kfree(properties);
+			return ERR_PTR(-ENOENT);
+		}
+		switch (desc_property->type) {
+		case MIKROBUS_PROPERTY_TYPE_U8:
+			val_u8 = kmemdup(&desc_property->value,
+					(desc_property->length) * sizeof(u8),
+					GFP_KERNEL);
+			if (desc_property->length == 1)
+				properties[i] = PROPERTY_ENTRY_U8(prop_name, *val_u8);
+			else
+				properties[i] = PROPERTY_ENTRY_U8_ARRAY_LEN(prop_name,
+					(void *)desc_property->value, desc_property->length);
+			break;
+		case MIKROBUS_PROPERTY_TYPE_U16:
+			val_u16 = kmemdup(&desc_property->value,
+					(desc_property->length) * sizeof(u16), GFP_KERNEL);
+			if (desc_property->length == 1)
+				properties[i] = PROPERTY_ENTRY_U16(prop_name, *val_u16);
+			else
+				properties[i] = PROPERTY_ENTRY_U16_ARRAY_LEN(prop_name,
+					(void *)desc_property->value, desc_property->length);
+			break;
+		case MIKROBUS_PROPERTY_TYPE_U32:
+			val_u32 = kmemdup(&desc_property->value,
+						(desc_property->length) * sizeof(u32), GFP_KERNEL);
+			if (desc_property->length == 1)
+				properties[i] = PROPERTY_ENTRY_U32(prop_name, *val_u32);
+			else
+				properties[i] = PROPERTY_ENTRY_U32_ARRAY_LEN(prop_name,
+					(void *)desc_property->value, desc_property->length);
+			break;
+		case MIKROBUS_PROPERTY_TYPE_U64:
+			val_u64 = kmemdup(&desc_property->value,
+					(desc_property->length) * sizeof(u64), GFP_KERNEL);
+			if (desc_property->length == 1)
+				properties[i] = PROPERTY_ENTRY_U64(prop_name, *val_u64);
+			else
+				properties[i] = PROPERTY_ENTRY_U64_ARRAY_LEN(prop_name,
+					(void *)desc_property->value, desc_property->length);
+			break;
+		default:
+			kfree(properties);
+			return ERR_PTR(-EINVAL);
+		}
+	}
+	return properties;
+}
+
+static u8 *mikrobus_property_link_get(struct addon_board_info *board, u8 prop_id,
+					struct board_device_info *board_dev,  u8 prop_type)
+{
+	struct greybus_descriptor_property *desc_property;
+	struct manifest_desc *descriptor;
+	bool found = false;
+	u8 *val_u8;
+
+	if (!prop_id)
+		return NULL;
+	list_for_each_entry(descriptor, &board->manifest_descs, links) {
+		if (descriptor->type != GREYBUS_TYPE_PROPERTY)
+			continue;
+		desc_property = descriptor->data;
+		if (desc_property->id == prop_id && desc_property->type == prop_type) {
+			found = true;
+			break;
+		}
+	}
+	if (!found)
+		return ERR_PTR(-ENOENT);
+	val_u8 = kmemdup(&desc_property->value, desc_property->length, GFP_KERNEL);
+	if (prop_type == MIKROBUS_PROPERTY_TYPE_GPIO)
+		board_dev->num_gpio_resources = desc_property->length;
+	else if (prop_type == MIKROBUS_PROPERTY_TYPE_PROPERTY)
+		board_dev->num_properties = desc_property->length;
+	else if (prop_type == MIKROBUS_PROPERTY_TYPE_REGULATOR)
+		board_dev->num_regulators = desc_property->length;
+	else if (prop_type == MIKROBUS_PROPERTY_TYPE_CLOCK)
+		board_dev->num_clocks = desc_property->length;
+	return val_u8;
+}
+
+static int mikrobus_manifest_attach_device(struct addon_board_info *board,
+						struct greybus_descriptor_device *dev_desc)
+{
+	struct board_device_info *board_dev;
+	struct gpiod_lookup_table *lookup;
+	struct greybus_descriptor_property *desc_property;
+	struct manifest_desc *descriptor;
+	u8 *gpio_desc_link;
+	u8 *prop_link;
+	u8 *reg_link;
+	u8 *clock_link;
+	u8 *gpioval;
+	int retval;
+	int i;
+
+	board_dev = kzalloc(sizeof(*board_dev), GFP_KERNEL);
+	if (!board_dev)
+		return -ENOMEM;
+	board_dev->id = dev_desc->id;
+	board_dev->drv_name = mikrobus_string_get(board, dev_desc->driver_stringid);
+	if (!board_dev->drv_name) {
+		retval = -ENOENT;
+		goto err_free_board_dev;
+	}
+	board_dev->protocol = dev_desc->protocol;
+	board_dev->reg = dev_desc->reg;
+	board_dev->irq = dev_desc->irq;
+	board_dev->irq_type = dev_desc->irq_type;
+	board_dev->max_speed_hz = le32_to_cpu(dev_desc->max_speed_hz);
+	board_dev->mode = dev_desc->mode;
+	pr_info("parsed device %d, driver=%s, protocol=%d, reg=%x", board_dev->id, board_dev->drv_name, board_dev->protocol, board_dev->reg);
+
+	if (dev_desc->prop_link > 0) {
+		prop_link = mikrobus_property_link_get(board, dev_desc->prop_link,
+				board_dev, MIKROBUS_PROPERTY_TYPE_PROPERTY);
+		if (!prop_link) {
+			retval = -ENOENT;
+			goto err_free_board_dev;
+		}
+		pr_info("device %d, number of properties=%d", board_dev->id,
+								board_dev->num_properties);
+		board_dev->properties = mikrobus_property_entry_get(board, prop_link,
+									board_dev->num_properties);
+	}
+
+	if (dev_desc->gpio_link > 0) {
+		gpio_desc_link = mikrobus_property_link_get(board, dev_desc->gpio_link, board_dev,
+							MIKROBUS_PROPERTY_TYPE_GPIO);
+		if (!gpio_desc_link) {
+			retval = -ENOENT;
+			goto err_free_board_dev;
+		}
+		pr_info("device %d, number of gpio resource=%d", board_dev->id,
+							board_dev->num_gpio_resources);
+		lookup = kzalloc(struct_size(lookup, table, board_dev->num_gpio_resources),
+					GFP_KERNEL);
+		if (!lookup) {
+			retval = -ENOMEM;
+			goto err_free_board_dev;
+		}
+		for (i = 0; i < board_dev->num_gpio_resources; i++) {
+			list_for_each_entry(descriptor, &board->manifest_descs, links) {
+				if (descriptor->type != GREYBUS_TYPE_PROPERTY)
+					continue;
+				desc_property = descriptor->data;
+				if (desc_property->id == gpio_desc_link[i]) {
+					gpioval = desc_property->value;
+					lookup->table[i].chip_hwnum = gpioval[0];
+					lookup->table[i].flags = gpioval[1];
+					lookup->table[i].con_id =
+					mikrobus_string_get(board,
+							desc_property->propname_stringid);
+					break;
+				}
+			}
+		}
+		board_dev->gpio_lookup = lookup;
+	}
+
+	if (dev_desc->reg_link > 0) {
+		reg_link = mikrobus_property_link_get(board, dev_desc->reg_link,
+				board_dev, MIKROBUS_PROPERTY_TYPE_REGULATOR);
+		if (!reg_link) {
+			retval = -ENOENT;
+			goto err_free_board_dev;
+		}
+		pr_info("device %d, number of regulators=%d", board_dev->id,
+								board_dev->num_regulators);
+		board_dev->regulators = mikrobus_property_entry_get(board, reg_link,
+									board_dev->num_regulators);
+	}
+
+	if (dev_desc->clock_link > 0) {
+		clock_link = mikrobus_property_link_get(board, dev_desc->clock_link,
+				board_dev, MIKROBUS_PROPERTY_TYPE_CLOCK);
+		if (!clock_link) {
+			retval = -ENOENT;
+			goto err_free_board_dev;
+		}
+		pr_info("device %d, number of clocks=%d", board_dev->id,
+								board_dev->num_clocks);
+		board_dev->clocks = mikrobus_property_entry_get(board, clock_link,
+									board_dev->num_clocks);
+	}
+	list_add_tail(&board_dev->links, &board->devices);
+	return 0;
+err_free_board_dev:
+	kfree(board_dev);
+	return retval;
+}
+
+static int mikrobus_manifest_parse_devices(struct addon_board_info *board)
+{
+	struct greybus_descriptor_device *desc_device;
+	struct manifest_desc *desc, *next;
+	int retval;
+	int devcount = 0;
+
+	list_for_each_entry_safe(desc, next, &board->manifest_descs, links) {
+		if (desc->type != GREYBUS_TYPE_DEVICE)
+			continue;
+		desc_device = desc->data;
+		retval = mikrobus_manifest_attach_device(board, desc_device);
+		devcount++;
+	}
+	return devcount;
+}
+
+int mikrobus_manifest_parse(struct addon_board_info *board, void *data,
+							 size_t size)
+{
+	struct greybus_manifest_header *header;
+	struct greybus_manifest *manifest;
+	struct greybus_descriptor *desc;
+	u16 manifest_size;
+	int dev_count;
+	int desc_size;
+
+	if (size < sizeof(*header)) {
+		pr_err("short manifest (%zu < %zu)", size, sizeof(*header));
+		return -EINVAL;
+	}
+
+	manifest = data;
+	header = &manifest->header;
+	manifest_size = le16_to_cpu(header->size);
+
+	if (manifest_size != size) {
+		pr_err("invalid manifest size(%zu < %u)", size, manifest_size);
+		return -EINVAL;
+	}
+
+	if (header->version_major > MIKROBUS_VERSION_MAJOR) {
+		pr_err("manifest version too new (%u.%u > %u.%u)",
+		header->version_major, header->version_minor,
+		MIKROBUS_VERSION_MAJOR, MIKROBUS_VERSION_MINOR);
+		return -EINVAL;
+	}
+
+	desc = manifest->descriptors;
+	size -= sizeof(*header);
+	while (size) {
+		desc_size = board_descriptor_add(board, desc, size);
+		if (desc_size < 0) {
+			pr_err("invalid manifest descriptor, size: %u", desc_size);
+			return -EINVAL;
+		}
+		desc = (void *)desc + desc_size;
+		size -= desc_size;
+	}
+	mikrobus_state_get(board);
+	dev_count = mikrobus_manifest_parse_devices(board);
+	pr_info(" %s manifest parsed with %d devices", board->name, dev_count);
+	manifest_descriptor_release_all(board);
+	return true;
+}
+
+size_t mikrobus_manifest_header_validate(void *data, size_t size)
+{
+	struct greybus_manifest_header *header;
+	u16 manifest_size;
+
+	header = data;
+	manifest_size = le16_to_cpu(header->size);
+	
+	if (manifest_size < sizeof(*header)) {
+		pr_err("short manifest (%zu < %zu)", size, sizeof(*header));
+		return -EINVAL;
+	}
+
+	if (header->version_major > MIKROBUS_VERSION_MAJOR) {
+		pr_err("manifest version too new (%u.%u > %u.%u)",
+		header->version_major, header->version_minor,
+		MIKROBUS_VERSION_MAJOR, MIKROBUS_VERSION_MINOR);
+		return -EINVAL;
+	}
+	return manifest_size;
+}
+
diff -Naur --no-dereference a/drivers/misc/mikrobus/mikrobus_manifest.h b/drivers/misc/mikrobus/mikrobus_manifest.h
--- a/drivers/misc/mikrobus/mikrobus_manifest.h	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/misc/mikrobus/mikrobus_manifest.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * mikroBUS manifest definition
+ * extension to Greybus Manifest Definition
+ *
+ * Copyright 2014-2015 Google Inc.
+ * Copyright 2014-2015 Linaro Ltd.
+ *
+ * Released under the GPLv2 and BSD licenses.
+ */
+
+#ifndef __MIKROBUS_MANIFEST_H
+#define __MIKROBUS_MANIFEST_H
+
+#include <linux/mikrobus.h>
+
+int mikrobus_manifest_parse(struct addon_board_info *info, void *data, size_t size);
+size_t mikrobus_manifest_header_validate(void *data, size_t size);
+
+#endif /* __MIKROBUS_MANIFEST_H */
diff -Naur --no-dereference a/drivers/net/ieee802154/bcfserial.c b/drivers/net/ieee802154/bcfserial.c
--- a/drivers/net/ieee802154/bcfserial.c	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/net/ieee802154/bcfserial.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,680 @@
+
+/*
+ *  bcfserial.c - Serial interface driver for BeagleConnect Freedom.
+ */
+#include <linux/circ_buf.h>
+#include <linux/crc-ccitt.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/serdev.h>
+#include <linux/sched.h>
+#include <linux/skbuff.h>
+
+#include <net/cfg802154.h>
+#include <net/mac802154.h>
+
+#define DEBUG
+
+#define BCFSERIAL_DRV_VERSION "0.1.0"
+#define BCFSERIAL_DRV_NAME "bcfserial"
+
+#define HDLC_FRAME	0x7E
+#define HDLC_ESC	0x7D
+#define HDLC_XOR	0x20
+
+#define ADDRESS_CTRL	0x01
+#define ADDRESS_WPAN	0x03
+#define ADDRESS_CDC	0x05
+#define ADDRESS_HW	0x41
+
+#define MAX_PSDU		127
+#define MAX_RX_XFER		(1 + MAX_PSDU + 2 + 1)	/* PHR+PSDU+CRC+LQI */
+#define HDLC_HEADER_LEN 	2
+#define PACKET_HEADER_LEN	8
+#define CRC_LEN 		2
+#define RX_HDLC_PAYLOAD		140
+#define MAX_TX_HDLC		(1 + HDLC_HEADER_LEN + PACKET_HEADER_LEN + MAX_RX_XFER + CRC_LEN + 1)
+#define MAX_RX_HDLC		(1 + RX_HDLC_PAYLOAD + CRC_LEN)
+#define TX_CIRC_BUF_SIZE	1024
+
+enum bcfserial_requests {
+	RESET,
+	TX,
+	XMIT_ASYNC,
+	ED,
+	SET_CHANNEL,
+	START,
+	STOP,
+	SET_SHORT_ADDR,
+	SET_PAN_ID,
+	SET_IEEE_ADDR,
+	SET_TXPOWER,
+	SET_CCA_MODE,
+	SET_CCA_ED_LEVEL,
+	SET_CSMA_PARAMS,
+	SET_LBT,
+	SET_FRAME_RETRIES,
+	SET_PROMISCUOUS_MODE,
+	GET_EXTENDED_ADDR,
+	GET_SUPPORTED_CHANNELS,
+};
+
+struct bcfserial {
+	struct serdev_device *serdev;
+	struct ieee802154_hw *hw;
+
+	struct work_struct tx_work;
+	spinlock_t tx_producer_lock;
+	spinlock_t tx_consumer_lock;
+	struct circ_buf tx_circ_buf;
+	struct sk_buff *tx_skb;
+	u16 tx_crc;
+	u8 tx_ack_seq;		/* current TX ACK sequence number */
+
+	size_t response_size;
+	u8 *response_buffer;
+
+	u8 rx_in_esc;
+	u8 rx_address;
+	u16 rx_offset;
+	u8 *rx_buffer;
+};
+
+// RX Packet Format:
+// - WPAN RX PACKET:	[len] payload [lqi]
+// - WPAN TX ACK:	[seq]
+// - WPAN CAPABILITIES:	supported_channels_mask(4)
+// - CDC:		printable_chars
+
+static void bcfserial_serdev_write_locked(struct bcfserial *bcfserial)
+{
+	//must be locked already
+	int head = smp_load_acquire(&bcfserial->tx_circ_buf.head);
+	int tail = bcfserial->tx_circ_buf.tail;
+	int count = CIRC_CNT_TO_END(head, tail, TX_CIRC_BUF_SIZE);
+	int written;
+
+	if (count >= 1) {
+		written = serdev_device_write_buf(bcfserial->serdev, &bcfserial->tx_circ_buf.buf[tail], count);
+
+		smp_store_release(&(bcfserial->tx_circ_buf.tail), (tail + written) & (TX_CIRC_BUF_SIZE - 1));
+	}
+}
+
+static void bcfserial_append(struct bcfserial *bcfserial, u8 value)
+{
+	//must be locked already
+	int head = bcfserial->tx_circ_buf.head;
+
+	while(true)
+	{
+		int tail = READ_ONCE(bcfserial->tx_circ_buf.tail);
+
+		if (CIRC_SPACE(head, tail, TX_CIRC_BUF_SIZE) >= 1) {
+
+			bcfserial->tx_circ_buf.buf[head] = value;
+
+			smp_store_release(&(bcfserial->tx_circ_buf.head),
+					  (head + 1) & (TX_CIRC_BUF_SIZE - 1));
+			return;
+		} else {
+			dev_dbg(&bcfserial->serdev->dev, "Tx circ buf full\n");
+			usleep_range(3000,5000);
+		}
+	}
+}
+
+static void bcfserial_append_tx_frame(struct bcfserial *bcfserial)
+{
+	bcfserial->tx_crc = 0xFFFF;
+	bcfserial_append(bcfserial, HDLC_FRAME);
+}
+
+static void bcfserial_append_escaped(struct bcfserial *bcfserial, u8 value)
+{
+        if (value == HDLC_FRAME || value == HDLC_ESC) {
+                bcfserial_append(bcfserial, HDLC_ESC);
+                value ^= HDLC_XOR;
+        }
+        bcfserial_append(bcfserial, value);
+}
+
+static void bcfserial_append_tx_u8(struct bcfserial *bcfserial, u8 value)
+{
+	bcfserial->tx_crc = crc_ccitt(bcfserial->tx_crc, &value, 1);
+	bcfserial_append_escaped(bcfserial, value);
+}
+
+static void bcfserial_append_tx_buffer(struct bcfserial *bcfserial, const void *buffer, size_t len)
+{
+	size_t i;
+	for (i=0; i<len; i++) {
+		bcfserial_append_tx_u8(bcfserial, ((u8*)buffer)[i]);
+	}
+}
+
+static void bcfserial_append_tx_le16(struct bcfserial *bcfserial, u16 value)
+{
+	value = cpu_to_le16(value);
+	bcfserial_append_tx_buffer(bcfserial, (u8 *)&value, sizeof(u16));
+}
+
+static void bcfserial_append_tx_crc(struct bcfserial *bcfserial)
+{
+	bcfserial->tx_crc ^= 0xffff;
+	bcfserial_append_escaped(bcfserial, bcfserial->tx_crc & 0xff);
+	bcfserial_append_escaped(bcfserial, (bcfserial->tx_crc >> 8) & 0xff);
+}
+
+static void bcfserial_hdlc_send(struct bcfserial *bcfserial, u8 cmd, u16 value, u16 index, u16 length, const void* buffer)
+{
+	// HDLC_FRAME
+	// 0 address : 0x01
+	// 1 control : 0x03
+	// 2 [bmRequestType] : 0x00
+	// 3 cmd (TX, START, STOP, etc)
+	// 4/5 value
+	// 6/7 index
+	// 8/9 length
+	// contents
+	// x/y crc
+	// HDLC_FRAME
+
+	spin_lock(&bcfserial->tx_producer_lock);
+
+	bcfserial_append_tx_frame(bcfserial);
+	bcfserial_append_tx_u8(bcfserial, 0x01); //address
+	bcfserial_append_tx_u8(bcfserial, 0x03); //control
+	bcfserial_append_tx_u8(bcfserial, 0x00); //ignored
+	bcfserial_append_tx_u8(bcfserial, cmd);
+	bcfserial_append_tx_le16(bcfserial, value);
+	bcfserial_append_tx_le16(bcfserial, index);
+	bcfserial_append_tx_le16(bcfserial, length);
+	bcfserial_append_tx_buffer(bcfserial, buffer, length);
+	bcfserial_append_tx_crc(bcfserial);
+	bcfserial_append_tx_frame(bcfserial);
+
+	spin_unlock(&bcfserial->tx_producer_lock);
+
+	spin_lock(&bcfserial->tx_consumer_lock);
+	bcfserial_serdev_write_locked(bcfserial);
+	spin_unlock(&bcfserial->tx_consumer_lock);
+}
+
+static void bcfserial_hdlc_send_cmd(struct bcfserial *bcfserial, u8 cmd)
+{
+	bcfserial_hdlc_send(bcfserial, cmd, 0, 0, 0, NULL);
+}
+
+static void bcfserial_hdlc_send_ack(struct bcfserial *bcfserial, u8 address, u8 seq)
+{
+	// To make this a valid S-frame:
+	// u8 ctrl = (((seq + 1) & 0x07) << 5) | 0x01;
+	// TODO Fix control frame type bug here and in wpanusb_bc
+
+	spin_lock(&bcfserial->tx_producer_lock);
+
+	bcfserial_append_tx_frame(bcfserial);
+	bcfserial_append_tx_u8(bcfserial, address); //address
+	bcfserial_append_tx_u8(bcfserial, 0x00); //control
+	bcfserial_append_tx_crc(bcfserial);
+	bcfserial_append_tx_frame(bcfserial);
+
+	spin_unlock(&bcfserial->tx_producer_lock);
+
+	spin_lock(&bcfserial->tx_consumer_lock);
+	bcfserial_serdev_write_locked(bcfserial);
+	spin_unlock(&bcfserial->tx_consumer_lock);
+}
+
+static int bcfserial_hdlc_receive(struct bcfserial *bcfserial, u8 cmd, void *buffer, size_t count)
+{
+	int retries = 5;
+	bcfserial->response_size = count;
+	bcfserial->response_buffer = (u8*)buffer;
+	bcfserial_hdlc_send_cmd(bcfserial, cmd);
+	// TODO semaphore? give/take
+	do {
+		usleep_range(10000,10001);
+	} while (bcfserial->response_size && retries--);
+	bcfserial->response_buffer = NULL;
+	if (bcfserial->response_size) {
+		bcfserial->response_size = 0;
+		return -EAGAIN;
+	}
+	return 0;
+}
+
+static int bcfserial_start(struct ieee802154_hw *hw)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "START\n");
+	bcfserial_hdlc_send_cmd(bcfserial, START);
+	return 0;
+}
+
+static void bcfserial_stop(struct ieee802154_hw *hw)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "STOP\n");
+	bcfserial_hdlc_send_cmd(bcfserial, STOP);
+}
+
+static int bcfserial_xmit(struct ieee802154_hw *hw, struct sk_buff *skb)
+{
+	struct bcfserial *bcfserial = hw->priv;
+
+	if (bcfserial->tx_skb)
+	{
+		dev_err(&bcfserial->serdev->dev, "SKB not freed! %d\n", bcfserial->tx_ack_seq);
+	}
+
+	bcfserial->tx_skb = skb;
+	bcfserial->tx_ack_seq++;
+	if (!bcfserial->tx_ack_seq) {
+		bcfserial->tx_ack_seq++;
+	}
+
+	dev_dbg(&bcfserial->serdev->dev, "XMIT %02x %d\n", bcfserial->tx_ack_seq, skb->len);
+
+	bcfserial_hdlc_send(bcfserial, TX, 0, bcfserial->tx_ack_seq, skb->len, skb->data);
+
+	return 0;
+}
+
+static int bcfserial_ed(struct ieee802154_hw *hw, u8 *level)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "ED\n");
+	WARN_ON(!level);
+	*level = 0xbe;
+	return 0;
+}
+
+static int bcfserial_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	u8 buffer[2] = {page, channel};
+	dev_dbg(&bcfserial->serdev->dev, "SET CHANNEL %u %u\n", page, channel);
+	bcfserial_hdlc_send(bcfserial, SET_CHANNEL, 0, 0, 2, &buffer);
+	return 0;
+}
+
+static int bcfserial_set_hw_addr_filt(struct ieee802154_hw *hw,
+				      struct ieee802154_hw_addr_filt *filt,
+				      unsigned long changed)
+{
+	struct bcfserial *bcfserial = hw->priv;
+
+	if (changed & IEEE802154_AFILT_SADDR_CHANGED) {
+		u16 addr = le16_to_cpu(filt->short_addr);
+		dev_dbg(&bcfserial->serdev->dev, "Short Address changed %x\n", addr);
+		bcfserial_hdlc_send(bcfserial, SET_SHORT_ADDR, 0, 0, sizeof(addr), &addr);
+	}
+
+	if (changed & IEEE802154_AFILT_PANID_CHANGED) {
+		u16 pan = le16_to_cpu(filt->pan_id);
+		dev_dbg(&bcfserial->serdev->dev, "PAN ID changed %x\n", pan);
+		bcfserial_hdlc_send(bcfserial, SET_PAN_ID, 0, 0, sizeof(pan), &pan);
+	}
+
+	if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) {
+		u64 ieee_addr = le64_to_cpu(filt->ieee_addr);
+		dev_dbg(&bcfserial->serdev->dev, "IEEE Addr changed %llx\n", ieee_addr);
+		bcfserial_hdlc_send(bcfserial, SET_IEEE_ADDR, 0, 0, sizeof(ieee_addr), &ieee_addr);
+	}
+	return 0;
+}
+
+static int bcfserial_set_txpower(struct ieee802154_hw *hw, s32 mbm)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "SET TXPOWER\n");
+	return -ENOTSUPP;
+}
+
+static int bcfserial_set_lbt(struct ieee802154_hw *hw, bool on)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "SET LBT\n");
+	return -ENOTSUPP;
+}
+
+static int bcfserial_set_cca_mode(struct ieee802154_hw *hw,
+			   const struct wpan_phy_cca *cca)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "SET CCA MODE\n");
+	return -ENOTSUPP;
+}
+
+static int bcfserial_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "SET CCA ED LEVEL\n");
+	return -ENOTSUPP;
+}
+
+static int bcfserial_set_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be,
+			      u8 retries)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "SET CSMA PARAMS\n");
+	return -ENOTSUPP;
+}
+
+static int bcfserial_set_frame_retries(struct ieee802154_hw *hw, s8 retries)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "SET FRAME RETRIES\n");
+	return -ENOTSUPP;
+}
+
+static int bcfserial_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on)
+{
+	struct bcfserial *bcfserial = hw->priv;
+	dev_dbg(&bcfserial->serdev->dev, "SET PROMISCUOUS\n");
+	return -ENOTSUPP;
+}
+
+static const struct ieee802154_ops bcfserial_ops = {
+	.owner			= THIS_MODULE,
+	.start			= bcfserial_start,
+	.stop			= bcfserial_stop,
+	.xmit_async		= bcfserial_xmit,
+	.ed			= bcfserial_ed,
+	.set_channel		= bcfserial_set_channel,
+	.set_hw_addr_filt	= bcfserial_set_hw_addr_filt,
+	.set_txpower		= bcfserial_set_txpower,
+	.set_lbt		= bcfserial_set_lbt,
+	.set_cca_mode		= bcfserial_set_cca_mode,
+	.set_cca_ed_level	= bcfserial_set_cca_ed_level,
+	.set_csma_params	= bcfserial_set_csma_params,
+	.set_frame_retries	= bcfserial_set_frame_retries,
+	.set_promiscuous_mode	= bcfserial_set_promiscuous_mode,
+};
+
+static void bcfserial_wpan_rx(struct bcfserial *bcfserial, const u8 *buffer, size_t count)
+{
+	struct sk_buff *skb;
+	u8 len, lqi;
+
+	if (count == 1) {
+		// TX ACK
+		dev_dbg(&bcfserial->serdev->dev, "TX ACK: 0x%02x:0x%02x\n", buffer[0], bcfserial->tx_ack_seq);
+
+		if (buffer[0] == bcfserial->tx_ack_seq && bcfserial->tx_skb) {
+			skb = bcfserial->tx_skb;
+			bcfserial->tx_skb = NULL;
+			ieee802154_xmit_complete(bcfserial->hw, skb, false);
+		} else {
+			dev_err(&bcfserial->serdev->dev, "unknown ack %u\n", bcfserial->tx_ack_seq);
+		}
+	} else if (bcfserial->response_size == count && bcfserial->response_buffer) {
+		//TODO replace with semaphore
+		dev_dbg(&bcfserial->serdev->dev, "Response size %u found\n", count);
+		memcpy(bcfserial->response_buffer, buffer, count);
+		bcfserial->response_size = 0;
+	} else {
+		// RX Packet
+		dev_dbg(&bcfserial->serdev->dev, "RX Packet Len:%u LQI:%u\n", buffer[0], buffer[count-1]);
+		len = buffer[0];
+		lqi = buffer[count-1];
+
+		if (len+2 != count) {
+			dev_err(&bcfserial->serdev->dev, "RX Packet invalid length\n");
+			return;
+		}
+
+		if (!ieee802154_is_valid_psdu_len(len)) {
+			dev_err(&bcfserial->serdev->dev, "frame corrupted\n");
+			return;
+		}
+
+		skb = dev_alloc_skb(IEEE802154_MTU);
+		if (!skb) {
+			dev_err(&bcfserial->serdev->dev, "failed to allocate sk_buff\n");
+			return;
+		}
+
+		skb_put_data(skb, buffer+1, len);
+		ieee802154_rx_irqsafe(bcfserial->hw, skb, lqi);
+	}
+}
+
+static int bcfserial_tty_receive(struct serdev_device *serdev,
+	const unsigned char *data, size_t count)
+{
+	struct bcfserial *bcfserial = serdev_device_get_drvdata(serdev);
+	u16 crc_check = 0;
+	size_t i;
+	u8 c;
+
+
+	for (i = 0; i < count; i++) {
+		c = data[i];
+
+		if (c == HDLC_FRAME) {
+			if (bcfserial->rx_address != 0xFF) {
+				crc_check = crc_ccitt(0xffff, &bcfserial->rx_address, 1);
+				crc_check = crc_ccitt(crc_check, bcfserial->rx_buffer, bcfserial->rx_offset);
+
+				if (crc_check == 0xf0b8) {
+					if ((bcfserial->rx_buffer[0] & 1) == 0) {
+						//I-Frame, send S-Frame ACK
+						bcfserial_hdlc_send_ack(bcfserial, bcfserial->rx_address, (bcfserial->rx_buffer[0] >> 1) & 0x7);
+					}
+
+					if (bcfserial->rx_address == ADDRESS_WPAN) {
+						bcfserial_wpan_rx(bcfserial, bcfserial->rx_buffer + 1, bcfserial->rx_offset - 3);
+					}
+					else if (bcfserial->rx_address == ADDRESS_CDC) {
+						bcfserial->rx_buffer[bcfserial->rx_offset-2] = 0;
+						printk("> %s", bcfserial->rx_buffer+1);
+					}
+				}
+				else {
+					dev_err(&bcfserial->serdev->dev, "CRC Failed from %02x: 0x%04x\n", bcfserial->rx_address, crc_check);
+				}
+			}
+			bcfserial->rx_offset = 0;
+			bcfserial->rx_address = 0xFF;
+		} else if (c == HDLC_ESC) {
+			bcfserial->rx_in_esc = 1;
+		} else {
+			if (bcfserial->rx_in_esc) {
+				c ^= 0x20;
+				bcfserial->rx_in_esc = 0;
+			}
+
+			if (bcfserial->rx_address == 0xFF) {
+				bcfserial->rx_address = c;
+				if (bcfserial->rx_address == ADDRESS_WPAN ||
+				   bcfserial->rx_address == ADDRESS_CDC ||
+				   bcfserial->rx_address == ADDRESS_HW) {
+				} else {
+					bcfserial->rx_address = 0xFF;
+				}
+					bcfserial->rx_offset = 0;
+			} else {
+				if (bcfserial->rx_offset < MAX_RX_HDLC) {
+					bcfserial->rx_buffer[bcfserial->rx_offset] = c;
+					bcfserial->rx_offset++;
+				} else {
+					//buffer overflow
+					dev_err(&bcfserial->serdev->dev, "RX Buffer Overflow\n");
+					bcfserial->rx_address = 0xFF;
+					bcfserial->rx_offset = 0;
+				}
+			}
+		}
+	}
+
+	return count;
+}
+
+static void bcfserial_uart_transmit(struct work_struct *work)
+{
+	struct bcfserial *bcfserial = container_of(work, struct bcfserial, tx_work);
+
+	spin_lock_bh(&bcfserial->tx_consumer_lock);
+	bcfserial_serdev_write_locked(bcfserial);
+	spin_unlock_bh(&bcfserial->tx_consumer_lock);
+}
+
+static void bcfserial_tty_wakeup(struct serdev_device *serdev)
+{
+	struct bcfserial *bcfserial = serdev_device_get_drvdata(serdev);
+
+	schedule_work(&bcfserial->tx_work);
+}
+
+static struct serdev_device_ops bcfserial_serdev_ops = {
+	.receive_buf = bcfserial_tty_receive,
+	.write_wakeup = bcfserial_tty_wakeup,
+};
+
+static const struct of_device_id bcfserial_of_match[] = {
+	{
+	.compatible = "beagle,bcfserial",
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, bcfserial_of_match);
+
+static const s32 channel_powers[] = {
+	300, 280, 230, 180, 130, 70, 0, -100, -200, -300, -400, -500, -700,
+	-900, -1200, -1700,
+};
+
+static int bcfserial_get_device_capabilities(struct bcfserial *bcfserial)
+{
+	u32 valid_channels = 0;
+	int ret = 0;
+	struct ieee802154_hw *hw = bcfserial->hw;
+
+	bcfserial_hdlc_send_cmd(bcfserial, RESET);
+
+	ret = bcfserial_hdlc_receive(bcfserial, GET_SUPPORTED_CHANNELS, &valid_channels, sizeof(valid_channels));
+	if (ret < 0) {
+		return ret;
+	}
+	dev_dbg(&bcfserial->serdev->dev, "Supported Channels %x\n", valid_channels);
+
+	/* FIXME: these need to come from device capabilities */
+	hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT;
+
+	/* FIXME: these need to come from device capabilities */
+	hw->phy->flags = WPAN_PHY_FLAG_TXPOWER;
+
+	/* Set default and supported channels */
+	hw->phy->current_page = 0;
+	hw->phy->current_channel = ffs(valid_channels) - 1; //set to lowest valid channel
+	hw->phy->supported.channels[0] = valid_channels;
+
+	/* FIXME: these need to come from device capabilities */
+	hw->phy->supported.tx_powers = channel_powers;
+	hw->phy->supported.tx_powers_size = ARRAY_SIZE(channel_powers);
+	hw->phy->transmit_power = hw->phy->supported.tx_powers[0];
+
+	return ret;
+}
+
+static int bcfserial_probe(struct serdev_device *serdev)
+{
+	struct ieee802154_hw *hw;
+	struct bcfserial *bcfserial = NULL;
+	u32 speed = 115200;
+	int ret;
+
+	hw = ieee802154_alloc_hw(sizeof(struct bcfserial), &bcfserial_ops);
+	if (!hw)
+		return -ENOMEM;
+
+	bcfserial = hw->priv;
+	bcfserial->hw = hw;
+	hw->parent = &serdev->dev;
+	bcfserial->serdev = serdev;
+
+	INIT_WORK(&bcfserial->tx_work, bcfserial_uart_transmit);
+
+	spin_lock_init(&bcfserial->tx_producer_lock);
+	spin_lock_init(&bcfserial->tx_consumer_lock);
+	bcfserial->tx_circ_buf.head = 0;
+	bcfserial->tx_circ_buf.tail = 0;
+	bcfserial->tx_circ_buf.buf = devm_kmalloc(&serdev->dev, TX_CIRC_BUF_SIZE, GFP_KERNEL);
+
+	bcfserial->rx_buffer = devm_kmalloc(&serdev->dev, MAX_RX_HDLC, GFP_KERNEL);
+	bcfserial->rx_offset = 0;
+	bcfserial->rx_address = 0xff;
+	bcfserial->rx_in_esc = 0;
+
+	serdev_device_set_drvdata(serdev, bcfserial);
+	serdev_device_set_client_ops(serdev, &bcfserial_serdev_ops);
+
+	ret = serdev_device_open(serdev);
+	if (ret) {
+		dev_err(&bcfserial->serdev->dev, "Unable to open device\n");
+		goto fail_hw;
+	}
+
+	speed = serdev_device_set_baudrate(serdev, speed);
+	dev_dbg(&bcfserial->serdev->dev, "Using baudrate %u\n", speed);
+
+	serdev_device_set_flow_control(serdev, false);
+
+	bcfserial_hdlc_send_ack(bcfserial, 0x41, 0x00);
+
+	ret = bcfserial_get_device_capabilities(bcfserial);
+
+	if (ret < 0) {
+		// dev_err(&udev->dev, "Failed to get device capabilities");
+		dev_err(&bcfserial->serdev->dev, "Failed to get device capabilities\n");
+		goto fail;
+	}
+
+	ret = ieee802154_register_hw(hw);
+
+	dev_info(&bcfserial->serdev->dev, "bcfserial started");
+	if (ret)
+		goto fail;
+
+	return 0;
+
+fail:
+	dev_err(&bcfserial->serdev->dev, "Closing serial device on failure\n");
+	serdev_device_close(serdev);
+fail_hw:
+	printk(KERN_ERR "Failed to open bcfserial\n");
+	ieee802154_free_hw(hw);
+	return ret;
+}
+
+static void bcfserial_remove(struct serdev_device *serdev)
+{
+	struct bcfserial *bcfserial = serdev_device_get_drvdata(serdev);
+	dev_info(&bcfserial->serdev->dev, "Closing serial device\n");
+	ieee802154_unregister_hw(bcfserial->hw);
+	flush_work(&bcfserial->tx_work);
+	ieee802154_free_hw(bcfserial->hw);
+	serdev_device_close(serdev);
+}
+
+static struct serdev_device_driver bcfserial_driver = {
+	.probe = bcfserial_probe,
+	.remove = bcfserial_remove,
+	.driver = {
+		.name = BCFSERIAL_DRV_NAME,
+		.of_match_table = of_match_ptr(bcfserial_of_match),
+	},
+};
+
+module_serdev_device_driver(bcfserial_driver);
+
+MODULE_DESCRIPTION("WPAN serial driver for BeagleConnect Freedom");
+MODULE_AUTHOR("Erik Larson <erik@statropy.com>");
+MODULE_VERSION("0.1.0");
+MODULE_LICENSE("GPL v2");
diff -Naur --no-dereference a/drivers/net/ieee802154/Kconfig b/drivers/net/ieee802154/Kconfig
--- a/drivers/net/ieee802154/Kconfig	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/net/ieee802154/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -73,6 +73,15 @@
 	  This driver can also be built as a module. To do so say M here.
 	  The module will be called 'atusb'.
 
+config IEEE802154_WPANUSB
+	tristate "WPANUSB driver"
+	depends on IEEE802154_DRIVERS && MAC802154 && USB
+	help
+	  Adds support for WPANUSB 802.15.4 adapters.
+
+	  This driver should work with at least the following devices:
+	  * BeagleBoard.org BeagleConnect Freedom
+
 config IEEE802154_ADF7242
 	tristate "ADF7242 transceiver driver"
 	depends on IEEE802154_DRIVERS && MAC802154
@@ -127,3 +136,12 @@
 
 	  This driver can also be built as a module. To do so say M here.
 	  The module will be called 'mac802154_hwsim'.
+
+config IEEE802154_BCFSERIAL
+	tristate "BCFSERIAL driver"
+	depends on IEEE802154_DRIVERS && MAC802154
+	help
+	  Adds support for BCFSERIAL 802.15.4 adapters.
+
+	  This driver should work with at least the following devices:
+	  * BeagleBoard.org BeagleConnect Freedom
diff -Naur --no-dereference a/drivers/net/ieee802154/Makefile b/drivers/net/ieee802154/Makefile
--- a/drivers/net/ieee802154/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/net/ieee802154/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -4,7 +4,9 @@
 obj-$(CONFIG_IEEE802154_MRF24J40) += mrf24j40.o
 obj-$(CONFIG_IEEE802154_CC2520) += cc2520.o
 obj-$(CONFIG_IEEE802154_ATUSB) += atusb.o
+obj-$(CONFIG_IEEE802154_WPANUSB) += wpanusb.o
 obj-$(CONFIG_IEEE802154_ADF7242) += adf7242.o
 obj-$(CONFIG_IEEE802154_CA8210) += ca8210.o
 obj-$(CONFIG_IEEE802154_MCR20A) += mcr20a.o
 obj-$(CONFIG_IEEE802154_HWSIM) += mac802154_hwsim.o
+obj-$(CONFIG_IEEE802154_BCFSERIAL) += bcfserial.o
diff -Naur --no-dereference a/drivers/net/ieee802154/wpanusb.c b/drivers/net/ieee802154/wpanusb.c
--- a/drivers/net/ieee802154/wpanusb.c	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/net/ieee802154/wpanusb.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,783 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for the WPANUSB IEEE 802.15.4 dongle
+ *
+ * Copyright (C) 2018 Intel Corp.
+ *
+ * The driver implements SoftMAC 802.15.4 protocol based on atusb
+ * driver for ATUSB IEEE 802.15.4 dongle.
+ *
+ * Written by Andrei Emeltchenko <andrei.emeltchenko@intel.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/usb.h>
+
+#include <net/cfg802154.h>
+#include <net/mac802154.h>
+
+#define DEBUG
+#include "wpanusb.h"
+
+#define WPANUSB_NUM_RX_URBS	4	/* allow for a bit of local latency */
+#define WPANUSB_ALLOC_DELAY_MS	100	/* delay after failed allocation */
+
+#define VENDOR_OUT		(USB_TYPE_VENDOR | USB_DIR_OUT)
+#define VENDOR_IN		(USB_TYPE_VENDOR | USB_DIR_IN)
+
+#define WPANUSB_VALID_CHANNELS	(0x07FFFFFF)
+
+struct wpanusb {
+	struct ieee802154_hw *hw;
+	struct usb_device *udev;
+	int shutdown;			/* non-zero if shutting down */
+
+	/* RX variables */
+	struct delayed_work work;	/* memory allocations */
+	struct usb_anchor idle_urbs;	/* URBs waiting to be submitted */
+	struct usb_anchor rx_urbs;	/* URBs waiting for reception */
+
+	/* TX variables */
+	struct usb_ctrlrequest tx_dr;
+	struct urb *tx_urb;
+	struct sk_buff *tx_skb;
+	u8 tx_ack_seq;			/* current TX ACK sequence number */
+};
+
+/* ----- USB commands without data ----------------------------------------- */
+
+static int wpanusb_control_send(struct wpanusb *wpanusb, unsigned int pipe,
+				u8 request, void *data, u16 size)
+{
+	struct usb_device *udev = wpanusb->udev;
+
+	return usb_control_msg(udev, pipe, request, VENDOR_OUT,
+			       0, 0, data, size, 1000);
+}
+
+static int wpanusb_control_recv(struct wpanusb *wpanusb, u8 request, void *data, u16 size)
+{
+	struct usb_device *udev = wpanusb->udev;
+
+	usb_control_msg(udev, usb_sndctrlpipe(udev, 0), request, VENDOR_OUT,
+			       0, 0, NULL, 0, 1000);
+
+	return usb_control_msg(udev, usb_rcvbulkpipe(udev, 1), request, VENDOR_IN,
+			       0, 0, data, size, 1000);
+}
+
+/* ----- skb allocation ---------------------------------------------------- */
+
+#define MAX_PSDU	127
+#define MAX_RX_XFER	(1 + MAX_PSDU + 2 + 1)	/* PHR+PSDU+CRC+LQI */
+
+#define SKB_WPANUSB(skb)	(*(struct wpanusb **)(skb)->cb)
+
+static void wpanusb_bulk_complete(struct urb *urb);
+
+static int wpanusb_submit_rx_urb(struct wpanusb *wpanusb, struct urb *urb)
+{
+	struct usb_device *udev = wpanusb->udev;
+	struct sk_buff *skb = urb->context;
+	int ret;
+
+	if (!skb) {
+		skb = alloc_skb(MAX_RX_XFER, GFP_KERNEL);
+		if (!skb) {
+			dev_warn_ratelimited(&udev->dev,
+					     "can't allocate skb\n");
+			return -ENOMEM;
+		}
+		skb_put(skb, MAX_RX_XFER);
+		SKB_WPANUSB(skb) = wpanusb;
+	}
+
+	usb_fill_bulk_urb(urb, udev, usb_rcvbulkpipe(udev, 1),
+			  skb->data, MAX_RX_XFER, wpanusb_bulk_complete, skb);
+	usb_anchor_urb(urb, &wpanusb->rx_urbs);
+
+	ret = usb_submit_urb(urb, GFP_KERNEL);
+	if (ret) {
+		usb_unanchor_urb(urb);
+		kfree_skb(skb);
+		urb->context = NULL;
+	}
+
+	return ret;
+}
+
+static void wpanusb_work_urbs(struct work_struct *work)
+{
+	struct wpanusb *wpanusb =
+		container_of(to_delayed_work(work), struct wpanusb, work);
+	struct usb_device *udev = wpanusb->udev;
+	struct urb *urb;
+	int ret;
+
+	if (wpanusb->shutdown)
+		return;
+
+	do {
+		urb = usb_get_from_anchor(&wpanusb->idle_urbs);
+		if (!urb)
+			return;
+
+		ret = wpanusb_submit_rx_urb(wpanusb, urb);
+	} while (!ret);
+
+	usb_anchor_urb(urb, &wpanusb->idle_urbs);
+	dev_warn_ratelimited(&udev->dev, "can't allocate/submit URB (%d)\n",
+			     ret);
+	schedule_delayed_work(&wpanusb->work,
+			      msecs_to_jiffies(WPANUSB_ALLOC_DELAY_MS) + 1);
+}
+
+/* ----- Asynchronous USB -------------------------------------------------- */
+
+static void wpanusb_tx_done(struct wpanusb *wpanusb, uint8_t seq)
+{
+	struct usb_device *udev = wpanusb->udev;
+	u8 expect = wpanusb->tx_ack_seq;
+
+	dev_dbg(&udev->dev, "seq 0x%02x expect 0x%02x\n", seq, expect);
+
+	if (seq == expect) {
+		ieee802154_xmit_complete(wpanusb->hw, wpanusb->tx_skb, false);
+	} else {
+		dev_dbg(&udev->dev, "unknown ack %u\n", seq);
+
+		ieee802154_wake_queue(wpanusb->hw);
+		if (wpanusb->tx_skb)
+			dev_kfree_skb_irq(wpanusb->tx_skb);
+	}
+}
+
+static void wpanusb_process_urb(struct urb *urb)
+{
+	struct usb_device *udev = urb->dev;
+	struct sk_buff *skb = urb->context;
+	struct wpanusb *wpanusb = SKB_WPANUSB(skb);
+	u8 len, lqi;
+
+	if (!urb->actual_length) {
+		dev_dbg(&udev->dev, "zero-sized URB ?\n");
+		return;
+	}
+
+	len = *skb->data;
+
+	dev_dbg(&udev->dev, "urb %p urb len %u pkt len %u", urb,
+		urb->actual_length, len);
+
+	/* Handle ACK */
+	if (urb->actual_length == 1) {
+		wpanusb_tx_done(wpanusb, len);
+		return;
+	}
+
+	if (len + 1 > urb->actual_length - 1) {
+		dev_dbg(&udev->dev, "frame len %d+1 > URB %u-1\n",
+			len, urb->actual_length);
+		return;
+	}
+
+	if (!ieee802154_is_valid_psdu_len(len)) {
+		dev_dbg(&udev->dev, "frame corrupted\n");
+		return;
+	}
+
+	print_hex_dump_bytes("> ", DUMP_PREFIX_OFFSET, skb->data,
+			     urb->actual_length);
+
+	/* Get LQI at the end of the packet */
+	lqi = skb->data[len + 1];
+	dev_dbg(&udev->dev, "rx len %d lqi 0x%02x\n", len, lqi);
+	skb_pull(skb, 1);	/* remove length */
+	skb_trim(skb, len);	/* remove LQI */
+	ieee802154_rx_irqsafe(wpanusb->hw, skb, lqi);
+	urb->context = NULL;	/* skb is gone */
+}
+
+static void wpanusb_bulk_complete(struct urb *urb)
+{
+	struct usb_device *udev = urb->dev;
+	struct sk_buff *skb = urb->context;
+	struct wpanusb *wpanusb = SKB_WPANUSB(skb);
+
+	dev_dbg(&udev->dev, "status %d len %d\n",
+		urb->status, urb->actual_length);
+
+	if (urb->status) {
+		if (urb->status == -ENOENT) { /* being killed */
+			kfree_skb(skb);
+			urb->context = NULL;
+			return;
+		}
+
+		dev_dbg(&udev->dev, "URB error %d\n", urb->status);
+	} else {
+		wpanusb_process_urb(urb);
+	}
+
+	usb_anchor_urb(urb, &wpanusb->idle_urbs);
+	if (!wpanusb->shutdown)
+		schedule_delayed_work(&wpanusb->work, 0);
+}
+
+/* ----- URB allocation/deallocation --------------------------------------- */
+
+static void wpanusb_free_urbs(struct wpanusb *wpanusb)
+{
+	struct urb *urb;
+
+	do {
+		urb = usb_get_from_anchor(&wpanusb->idle_urbs);
+		if (!urb)
+			break;
+		kfree_skb(urb->context);
+		usb_free_urb(urb);
+	} while (true);
+}
+
+static int wpanusb_alloc_urbs(struct wpanusb *wpanusb, unsigned int n)
+{
+	struct urb *urb;
+
+	while (n--) {
+		urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!urb) {
+			wpanusb_free_urbs(wpanusb);
+			return -ENOMEM;
+		}
+		usb_anchor_urb(urb, &wpanusb->idle_urbs);
+	}
+
+	return 0;
+}
+
+/* ----- IEEE 802.15.4 interface operations -------------------------------- */
+
+static void wpanusb_xmit_complete(struct urb *urb)
+{
+	dev_dbg(&urb->dev->dev, "urb transmit completed");
+}
+
+static int wpanusb_xmit(struct ieee802154_hw *hw, struct sk_buff *skb)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	int ret = 0;
+
+	dev_dbg(&udev->dev, "len %u", skb->len);
+
+	/* ack_seq range is 0x01 - 0xff */
+	wpanusb->tx_ack_seq++;
+	if (!wpanusb->tx_ack_seq)
+		wpanusb->tx_ack_seq++;
+
+	wpanusb->tx_skb = skb;
+	wpanusb->tx_dr.wIndex = cpu_to_le16(wpanusb->tx_ack_seq);
+	wpanusb->tx_dr.wLength = cpu_to_le16(skb->len);
+
+	usb_fill_control_urb(wpanusb->tx_urb, udev,
+			     usb_sndctrlpipe(udev, 0),
+			     (unsigned char *)&wpanusb->tx_dr, skb->data,
+			     skb->len, wpanusb_xmit_complete, NULL);
+	ret = usb_submit_urb(wpanusb->tx_urb, GFP_ATOMIC);
+
+	dev_dbg(&udev->dev, "%s: ret %d len %u seq %u\n", __func__, ret,
+		skb->len, wpanusb->tx_ack_seq);
+
+	return ret;
+}
+
+static int wpanusb_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	struct set_channel *req;
+	int ret;
+
+	req = kmalloc(sizeof(*req), GFP_KERNEL);
+	if (!req)
+		return -ENOMEM;
+
+	req->page = page;
+	req->channel = channel;
+
+	ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0),
+				   SET_CHANNEL, req, sizeof(*req));
+	kfree(req);
+	if (ret < 0) {
+		dev_err(&udev->dev, "Failed set channel, ret %d", ret);
+		return ret;
+	}
+
+	dev_dbg(&udev->dev, "set page %u channel %u", page, channel);
+
+	return 0;
+}
+
+static int wpanusb_ed(struct ieee802154_hw *hw, u8 *level)
+{
+	WARN_ON(!level);
+
+	*level = 0xbe;
+
+	return 0;
+}
+
+static int wpanusb_set_hw_addr_filt(struct ieee802154_hw *hw,
+				    struct ieee802154_hw_addr_filt *filt,
+				    unsigned long changed)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	int ret = 0;
+
+	if (changed & IEEE802154_AFILT_SADDR_CHANGED) {
+		struct set_short_addr *req;
+
+		req = kmalloc(sizeof(*req), GFP_KERNEL);
+		if (!req)
+			return -ENOMEM;
+
+		req->short_addr = filt->short_addr;
+
+		ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0),
+					   SET_SHORT_ADDR, req, sizeof(*req));
+		kfree(req);
+		if (ret < 0) {
+			dev_err(&udev->dev, "Failed to set short_addr, ret %d",
+				ret);
+			return ret;
+		}
+
+		dev_dbg(&udev->dev, "short addr changed to 0x%04x",
+			le16_to_cpu(filt->short_addr));
+	}
+
+	if (changed & IEEE802154_AFILT_PANID_CHANGED) {
+		struct set_pan_id *req;
+
+		req = kmalloc(sizeof(*req), GFP_KERNEL);
+		if (!req)
+			return -ENOMEM;
+
+		req->pan_id = filt->pan_id;
+
+		ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0),
+					   SET_PAN_ID, req, sizeof(*req));
+		kfree(req);
+		if (ret < 0) {
+			dev_err(&udev->dev, "Failed to set pan_id, ret %d",
+				ret);
+			return ret;
+		}
+
+		dev_dbg(&udev->dev, "pan id changed to 0x%04x",
+			le16_to_cpu(filt->pan_id));
+	}
+
+	if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) {
+		struct set_ieee_addr *req;
+
+		req = kmalloc(sizeof(*req), GFP_KERNEL);
+		if (!req)
+			return -ENOMEM;
+
+		memcpy(&req->ieee_addr, &filt->ieee_addr,
+		       sizeof(req->ieee_addr));
+
+		ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0),
+					   SET_IEEE_ADDR, req, sizeof(*req));
+		kfree(req);
+		if (ret < 0) {
+			dev_err(&udev->dev, "Failed to set ieee_addr, ret %d",
+				ret);
+			return ret;
+		}
+
+		dev_dbg(&udev->dev, "IEEE addr changed");
+	}
+
+	if (changed & IEEE802154_AFILT_PANC_CHANGED) {
+		dev_dbg(&udev->dev, "panc changed");
+
+		dev_err(&udev->dev, "Not handled AFILT_PANC_CHANGED");
+	}
+
+	return ret;
+}
+
+static int wpanusb_set_extended_addr(struct ieee802154_hw *hw)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	unsigned char *buffer;
+	__le64 extended_addr;
+	int ret = 0;
+	u64 addr;
+
+	buffer = kmalloc(IEEE802154_EXTENDED_ADDR_LEN, GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0), GET_EXTENDED_ADDR, buffer,
+					IEEE802154_EXTENDED_ADDR_LEN);
+	if (ret < 0) {
+		dev_err(&udev->dev, "failed to fetch extended address, random address set\n");
+		ieee802154_random_extended_addr(&wpanusb->hw->phy->perm_extended_addr);
+		kfree(buffer);
+		return ret;
+	}
+
+	memcpy(&extended_addr, buffer, IEEE802154_EXTENDED_ADDR_LEN);
+	/* Check if read address is not empty and the unicast bit is set correctly */
+	if (!ieee802154_is_valid_extended_unicast_addr(extended_addr)) {
+		dev_info(&udev->dev, "no permanent extended address found, random address set\n");
+		ieee802154_random_extended_addr(&wpanusb->hw->phy->perm_extended_addr);
+	} else {
+		wpanusb->hw->phy->perm_extended_addr = extended_addr;
+		addr = swab64((__force u64)wpanusb->hw->phy->perm_extended_addr);
+		dev_info(&udev->dev, "Read permanent extended address %8phC from device\n", &addr);
+	}
+
+	kfree(buffer);
+	return ret;
+}
+
+/* FIXME: these need to come as capabilities from the device */
+static const s32 wpanusb_powers[] = {
+	300, 280, 230, 180, 130, 70, 0, -100, -200, -300, -400, -500, -700,
+	-900, -1200, -1700,
+};
+
+static int wpanusb_get_device_capabilities(struct ieee802154_hw *hw)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	unsigned char *buffer;
+	uint32_t valid_channels;
+	int ret = 0;
+
+	buffer = kmalloc(IEEE802154_EXTENDED_ADDR_LEN, GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0), GET_EXTENDED_ADDR, buffer,
+					IEEE802154_EXTENDED_ADDR_LEN);
+	if (ret < 0) {
+		dev_err(&udev->dev, "failed to fetch extended address, random address set\n");
+		ieee802154_random_extended_addr(&wpanusb->hw->phy->perm_extended_addr);
+		kfree(buffer);
+		return ret;
+	}
+
+	buffer = kmalloc(sizeof(valid_channels), GFP_NOIO);
+	if (!buffer)
+		return -ENOMEM;
+	ret = wpanusb_control_recv(wpanusb, GET_SUPPORTED_CHANNELS, buffer,	sizeof(valid_channels));
+	if (ret != sizeof(uint32_t)) {
+		dev_err(&udev->dev, "failed to fetch supported channels\n");
+		kfree(buffer);
+		return ret;
+	}
+	valid_channels = *(uint32_t *)buffer;
+	if (!valid_channels) {
+		dev_err(&udev->dev, "failed to fetch valid channels, setting default valid channels\n");
+		valid_channels = WPANUSB_VALID_CHANNELS;
+	}
+
+	/* FIXME: these need to come from device capabilities */
+	hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT;
+
+	/* FIXME: these need to come from device capabilities */
+	hw->phy->flags = WPAN_PHY_FLAG_TXPOWER;
+
+	/* Set default and supported channels */
+	hw->phy->current_page = 0;
+	hw->phy->current_channel = ffs(valid_channels) - 1; //set to lowest valid channel
+	hw->phy->supported.channels[0] = valid_channels;
+
+	/* FIXME: these need to come from device capabilities */
+	hw->phy->supported.tx_powers = wpanusb_powers;
+	hw->phy->supported.tx_powers_size = ARRAY_SIZE(wpanusb_powers);
+	hw->phy->transmit_power = hw->phy->supported.tx_powers[0];
+
+	kfree(buffer);
+	return ret;
+}
+
+static int wpanusb_start(struct ieee802154_hw *hw)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	int ret;
+
+	schedule_delayed_work(&wpanusb->work, 0);
+
+	ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0),
+				   START, NULL, 0);
+	if (ret < 0) {
+		dev_err(&udev->dev, "Failed to start ieee802154");
+		usb_kill_anchored_urbs(&wpanusb->idle_urbs);
+	}
+
+	return ret;
+}
+
+static void wpanusb_stop(struct ieee802154_hw *hw)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	int ret;
+
+	dev_dbg(&udev->dev, "stop");
+
+	usb_kill_anchored_urbs(&wpanusb->idle_urbs);
+
+	ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0),
+				   STOP, NULL, 0);
+	if (ret < 0)
+		dev_err(&udev->dev, "Failed to stop ieee802154");
+}
+
+static int wpanusb_set_txpower(struct ieee802154_hw *hw, s32 mbm)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+
+	dev_err(&udev->dev, "%s: Not handled, mbm %d", __func__, mbm);
+
+	return -ENOTSUPP;
+}
+
+static int wpanusb_set_cca_mode(struct ieee802154_hw *hw,
+				const struct wpan_phy_cca *cca)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+
+	dev_err(&udev->dev, "%s: Not handled, mode %u opt %u",
+		__func__, cca->mode, cca->opt);
+
+	switch (cca->mode) {
+	case NL802154_CCA_ENERGY:
+		break;
+	case NL802154_CCA_CARRIER:
+		break;
+	case NL802154_CCA_ENERGY_CARRIER:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int wpanusb_set_lbt(struct ieee802154_hw *hw, bool on)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	int ret = 0;
+
+	if (on)
+		ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0),
+				   SET_LBT, NULL, 0);
+
+	return ret;
+}
+
+static int wpanusb_set_frame_retries(struct ieee802154_hw *hw, s8 retries)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+	int ret;
+
+	/* FIXME pass retries onwards to device */
+	ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0),
+				   SET_FRAME_RETRIES, NULL, 0);
+
+	return ret;
+}
+
+static int wpanusb_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+
+	dev_err(&udev->dev, "%s: Not handled, mbm %d", __func__, mbm);
+
+	return 0;
+}
+
+static int wpanusb_set_csma_params(struct ieee802154_hw *hw, u8 min_be,
+				   u8 max_be, u8 retries)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+
+	dev_err(&udev->dev, "%s: Not handled, min_be %u max_be %u retr %u",
+		__func__, min_be, max_be, retries);
+
+	return 0;
+}
+
+static int wpanusb_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on)
+{
+	struct wpanusb *wpanusb = hw->priv;
+	struct usb_device *udev = wpanusb->udev;
+
+	dev_err(&udev->dev, "%s: Not handled, on %d", __func__, on);
+
+	return 0;
+}
+
+static const struct ieee802154_ops wpanusb_ops = {
+	.owner			= THIS_MODULE,
+	.xmit_async		= wpanusb_xmit,
+	.ed			= wpanusb_ed,
+	.set_channel		= wpanusb_channel,
+	.start			= wpanusb_start,
+	.stop			= wpanusb_stop,
+	.set_hw_addr_filt	= wpanusb_set_hw_addr_filt,
+	.set_txpower		= wpanusb_set_txpower,
+	.set_lbt		= wpanusb_set_lbt,
+	.set_cca_mode		= wpanusb_set_cca_mode,
+	.set_cca_ed_level	= wpanusb_set_cca_ed_level,
+	.set_csma_params	= wpanusb_set_csma_params,
+	.set_frame_retries	= wpanusb_set_frame_retries,
+	.set_promiscuous_mode	= wpanusb_set_promiscuous_mode,
+};
+
+/* ----- Setup ------------------------------------------------------------- */
+
+static int wpanusb_probe(struct usb_interface *interface,
+			 const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(interface);
+	struct ieee802154_hw *hw;
+	struct wpanusb *wpanusb;
+	int ret;
+
+	hw = ieee802154_alloc_hw(sizeof(struct wpanusb), &wpanusb_ops);
+	if (!hw)
+		return -ENOMEM;
+
+	wpanusb = hw->priv;
+	wpanusb->hw = hw;
+	wpanusb->udev = usb_get_dev(udev);
+	usb_set_intfdata(interface, wpanusb);
+
+	wpanusb->shutdown = 0;
+	INIT_DELAYED_WORK(&wpanusb->work, wpanusb_work_urbs);
+	init_usb_anchor(&wpanusb->idle_urbs);
+	init_usb_anchor(&wpanusb->rx_urbs);
+
+	ret = wpanusb_alloc_urbs(wpanusb, WPANUSB_NUM_RX_URBS);
+	if (ret)
+		goto fail;
+
+	wpanusb->tx_dr.bRequestType = VENDOR_OUT;
+	wpanusb->tx_dr.bRequest = TX;
+	wpanusb->tx_dr.wValue = cpu_to_le16(0);
+
+	wpanusb->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!wpanusb->tx_urb)
+		goto fail;
+
+	hw->parent = &udev->dev;
+
+	ret = wpanusb_control_send(wpanusb, usb_sndctrlpipe(udev, 0), RESET,
+				   NULL, 0);
+	if (ret < 0) {
+		dev_err(&udev->dev, "Failed to RESET ieee802154");
+		goto fail;
+	}
+
+	ret = wpanusb_get_device_capabilities(hw);
+
+	if (ret < 0) {
+		dev_err(&udev->dev, "Failed to get device capabilities");
+		goto fail;
+	}
+
+	ret = wpanusb_set_extended_addr(hw);
+
+	if (ret < 0) {
+		dev_err(&udev->dev, "Failed to set permanent address");
+		goto fail;
+	}
+
+	ret = ieee802154_register_hw(hw);
+	if (ret) {
+		dev_err(&udev->dev, "Failed to register ieee802154");
+		goto fail;
+	}
+
+	dev_dbg(&udev->dev, "ieee802154 ready to go");
+
+	return 0;
+
+fail:
+	dev_err(&udev->dev, "Failed ieee802154 probe");
+	wpanusb_free_urbs(wpanusb);
+	usb_kill_urb(wpanusb->tx_urb);
+	usb_free_urb(wpanusb->tx_urb);
+	usb_put_dev(udev);
+	ieee802154_free_hw(hw);
+
+	return ret;
+}
+
+static void wpanusb_disconnect(struct usb_interface *interface)
+{
+	struct wpanusb *wpanusb = usb_get_intfdata(interface);
+
+	wpanusb->shutdown = 1;
+	cancel_delayed_work_sync(&wpanusb->work);
+
+	usb_kill_anchored_urbs(&wpanusb->rx_urbs);
+	wpanusb_free_urbs(wpanusb);
+	usb_kill_urb(wpanusb->tx_urb);
+	usb_free_urb(wpanusb->tx_urb);
+
+	ieee802154_unregister_hw(wpanusb->hw);
+
+	ieee802154_free_hw(wpanusb->hw);
+
+	usb_set_intfdata(interface, NULL);
+	usb_put_dev(wpanusb->udev);
+}
+
+/* The devices we work with */
+static const struct usb_device_id wpanusb_device_table[] = {
+	{
+		USB_DEVICE_AND_INTERFACE_INFO(WPANUSB_VENDOR_ID,
+					      WPANUSB_PRODUCT_ID,
+					      USB_CLASS_VENDOR_SPEC,
+					      0, 0),
+                USB_DEVICE_AND_INTERFACE_INFO(BEAGLECONNECT_VENDOR_ID,
+                                                BEAGLECONNECT_PRODUCT_ID,
+                                                USB_CLASS_VENDOR_SPEC,
+                                                0, 0)
+	},
+	/* end with null element */
+	{}
+};
+MODULE_DEVICE_TABLE(usb, wpanusb_device_table);
+
+static struct usb_driver wpanusb_driver = {
+	.name		= "wpanusb",
+	.probe		= wpanusb_probe,
+	.disconnect	= wpanusb_disconnect,
+	.id_table	= wpanusb_device_table,
+};
+module_usb_driver(wpanusb_driver);
+
+MODULE_AUTHOR("Andrei Emeltchenko <andrei.emeltchenko@intel.com>");
+MODULE_DESCRIPTION("WPANUSB IEEE 802.15.4 over USB Driver");
+MODULE_LICENSE("GPL");
diff -Naur --no-dereference a/drivers/net/ieee802154/wpanusb.h b/drivers/net/ieee802154/wpanusb.h
--- a/drivers/net/ieee802154/wpanusb.h	1969-12-31 19:00:00.000000000 -0500
+++ b/drivers/net/ieee802154/wpanusb.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Definitions shared between kernel and WPANUSB firmware
+ *
+ * Copyright (C) 2018 Intel Corp.
+ *
+ * Written by Andrei Emeltchenko <andrei.emeltchenko@intel.com>
+ */
+
+#define WPANUSB_VENDOR_ID	0x2fe3
+#define WPANUSB_PRODUCT_ID	0x0101
+
+#define BEAGLECONNECT_VENDOR_ID  0x2047
+#define BEAGLECONNECT_PRODUCT_ID 0x0aa5
+
+enum wpanusb_requests {
+	RESET,
+	TX,
+	XMIT_ASYNC,
+	ED,
+	SET_CHANNEL,
+	START,
+	STOP,
+	SET_SHORT_ADDR,
+	SET_PAN_ID,
+	SET_IEEE_ADDR,
+	SET_TXPOWER,
+	SET_CCA_MODE,
+	SET_CCA_ED_LEVEL,
+	SET_CSMA_PARAMS,
+	SET_LBT,
+	SET_FRAME_RETRIES,
+	SET_PROMISCUOUS_MODE,
+	GET_EXTENDED_ADDR,
+	GET_SUPPORTED_CHANNELS,
+};
+
+struct set_channel {
+	__u8 page;
+	__u8 channel;
+} __packed;
+
+struct set_short_addr {
+	__le16 short_addr;
+} __packed;
+
+struct set_pan_id {
+	__le16 pan_id;
+} __packed;
+
+struct set_ieee_addr {
+	__le64 ieee_addr;
+} __packed;
diff -Naur --no-dereference a/drivers/spi/spidev.c b/drivers/spi/spidev.c
--- a/drivers/spi/spidev.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/spi/spidev.c	2022-06-12 13:07:42.551111715 -0400
@@ -751,9 +751,9 @@
 	 * compatible string, it is a Linux implementation thing
 	 * rather than a description of the hardware.
 	 */
-	WARN(spi->dev.of_node &&
-	     of_device_is_compatible(spi->dev.of_node, "spidev"),
-	     "%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
+//	WARN(spi->dev.of_node &&
+//	     of_device_is_compatible(spi->dev.of_node, "spidev"),
+//	     "%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
 
 	spidev_probe_acpi(spi);
 
diff -Naur --no-dereference a/drivers/staging/fbtft/fb_ssd1306.c b/drivers/staging/fbtft/fb_ssd1306.c
--- a/drivers/staging/fbtft/fb_ssd1306.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/fbtft/fb_ssd1306.c	2022-06-12 13:07:42.551111715 -0400
@@ -55,6 +55,9 @@
 		write_reg(par, 0x3F);
 	else if (par->info->var.yres == 48)
 		write_reg(par, 0x2F);
+	else if (par->info->var.yres == 39)
+		/* https://libstock.mikroe.com/projects/download/1111/2577/1411057038_oled_b_click___e_mikroc_arm.zip */
+		write_reg(par, 0x27);
 	else
 		write_reg(par, 0x1F);
 
@@ -76,19 +79,27 @@
 	write_reg(par, 0x01);
 
 	/* Set Segment Re-map */
-	/* column address 127 is mapped to SEG0 */
-	write_reg(par, 0xA0 | 0x1);
+	if (par->info->var.yres == 39)
+		/* no segment re-map */
+		write_reg(par, 0xA0 | 0x0);
+	else
+		/* column address 127 is mapped to SEG0 */
+		write_reg(par, 0xA0 | 0x1);
 
 	/* Set COM Output Scan Direction */
-	/* remapped mode. Scan from COM[N-1] to COM0 */
-	write_reg(par, 0xC8);
+	if (par->info->var.yres == 39)
+		/* no columnt re-map mode. Scan from COM0 to COM[N-1] */
+		write_reg(par, 0xC0);
+	else
+		/* remapped mode. Scan from COM[N-1] to COM0 */
+		write_reg(par, 0xC8);
 
 	/* Set COM Pins Hardware Configuration */
 	write_reg(par, 0xDA);
 	if (par->info->var.yres == 64)
 		/* A[4]=1b, Alternative COM pin configuration */
 		write_reg(par, 0x12);
-	else if (par->info->var.yres == 48)
+	else if (par->info->var.yres == 48 || par->info->var.yres == 39)
 		/* A[4]=1b, Alternative COM pin configuration */
 		write_reg(par, 0x12);
 	else
@@ -97,12 +108,18 @@
 
 	/* Set Pre-charge Period */
 	write_reg(par, 0xD9);
-	write_reg(par, 0xF1);
+	if (par->info->var.yres == 39)
+		write_reg(par, 0x25);
+	else
+		write_reg(par, 0xF1);
 
 	/* Set VCOMH Deselect Level */
 	write_reg(par, 0xDB);
-	/* according to the datasheet, this value is out of bounds */
-	write_reg(par, 0x40);
+	if (par->info->var.yres == 39)
+		write_reg(par, 0x20);
+	else
+		/* according to the datasheet, this value is out of bounds */
+		write_reg(par, 0x40);
 
 	/* Entire Display ON */
 	/* Resume to RAM content display. Output follows RAM content */
@@ -133,6 +150,20 @@
 	write_reg(par, 0x5);
 }
 
+static void set_addr_win_96x39(struct fbtft_par *par)
+{
+	/* Set Page Address */
+	write_reg(par, 0xB0);
+	/* Set Column Address */
+	write_reg(par, 0x21);
+	write_reg(par, 0x00);
+	write_reg(par, 0x5F);
+	/* Set Page Address Range */
+	write_reg(par, 0x22);
+	write_reg(par, 0x0);
+	write_reg(par, 0x4);
+}
+
 static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
 {
 	/* Set Lower Column Start Address for Page Addressing Mode */
@@ -144,6 +175,8 @@
 
 	if (par->info->var.xres == 64 && par->info->var.yres == 48)
 		set_addr_win_64x48(par);
+	else if (par->info->var.xres == 96 && par->info->var.yres == 39)
+		set_addr_win_96x39(par);
 }
 
 static int blank(struct fbtft_par *par, bool on)
@@ -188,11 +221,19 @@
 					*buf |= BIT(i);
 			buf++;
 		}
+		if (yres % 8) {
+			*buf = 0x00;
+			for (i = 0; i < (yres - (y * 8)); i++)
+				if (vmem16[(y * 8 + i) * xres + x])
+					*buf |= BIT(i);
+			buf++;
+			y++;
+		}
 	}
 
 	/* Write data */
 	gpiod_set_value(par->gpio.dc, 1);
-	ret = par->fbtftops.write(par, par->txbuf.buf, xres * yres / 8);
+	ret = par->fbtftops.write(par, par->txbuf.buf, xres * (yres / 8 + (yres % 8 != 0)));
 	if (ret < 0)
 		dev_err(par->info->device, "write failed and returned: %d\n",
 			ret);
diff -Naur --no-dereference a/drivers/staging/greybus/gbphy.c b/drivers/staging/greybus/gbphy.c
--- a/drivers/staging/greybus/gbphy.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/gbphy.c	2022-06-12 13:07:42.551111715 -0400
@@ -14,16 +14,12 @@
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/greybus.h>
+#include <linux/mikrobus.h>
 
-#include "gbphy.h"
+#include <linux/greybus/gbphy.h>
 
 #define GB_GBPHY_AUTOSUSPEND_MS	3000
 
-struct gbphy_host {
-	struct gb_bundle *bundle;
-	struct list_head devices;
-};
-
 static DEFINE_IDA(gbphy_id);
 
 static ssize_t protocol_id_show(struct device *dev,
@@ -303,6 +299,8 @@
 		list_add(&gbphy_dev->list, &gbphy_host->devices);
 	}
 
+	mikrobus_port_gb_register(gbphy_host, bundle->manifest_blob, bundle->manifest_size);
+
 	gb_pm_runtime_put_autosuspend(bundle);
 
 	return 0;
diff -Naur --no-dereference a/drivers/staging/greybus/gbphy.h b/drivers/staging/greybus/gbphy.h
--- a/drivers/staging/greybus/gbphy.h	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/gbphy.h	1969-12-31 19:00:00.000000000 -0500
@@ -1,109 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Greybus Bridged-Phy Bus driver
- *
- * Copyright 2016 Google Inc.
- */
-
-#ifndef __GBPHY_H
-#define __GBPHY_H
-
-struct gbphy_device {
-	u32 id;
-	struct greybus_descriptor_cport *cport_desc;
-	struct gb_bundle *bundle;
-	struct list_head list;
-	struct device dev;
-};
-#define to_gbphy_dev(d) container_of(d, struct gbphy_device, dev)
-
-static inline void *gb_gbphy_get_data(struct gbphy_device *gdev)
-{
-	return dev_get_drvdata(&gdev->dev);
-}
-
-static inline void gb_gbphy_set_data(struct gbphy_device *gdev, void *data)
-{
-	dev_set_drvdata(&gdev->dev, data);
-}
-
-struct gbphy_device_id {
-	__u8 protocol_id;
-};
-
-#define GBPHY_PROTOCOL(p)		\
-	.protocol_id	= (p),
-
-struct gbphy_driver {
-	const char *name;
-	int (*probe)(struct gbphy_device *device,
-		     const struct gbphy_device_id *id);
-	void (*remove)(struct gbphy_device *device);
-	const struct gbphy_device_id *id_table;
-
-	struct device_driver driver;
-};
-#define to_gbphy_driver(d) container_of(d, struct gbphy_driver, driver)
-
-int gb_gbphy_register_driver(struct gbphy_driver *driver,
-			     struct module *owner, const char *mod_name);
-void gb_gbphy_deregister_driver(struct gbphy_driver *driver);
-
-#define gb_gbphy_register(driver) \
-	gb_gbphy_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
-#define gb_gbphy_deregister(driver) \
-	gb_gbphy_deregister_driver(driver)
-
-/**
- * module_gbphy_driver() - Helper macro for registering a gbphy driver
- * @__gbphy_driver: gbphy_driver structure
- *
- * Helper macro for gbphy drivers to set up proper module init / exit
- * functions.  Replaces module_init() and module_exit() and keeps people from
- * printing pointless things to the kernel log when their driver is loaded.
- */
-#define module_gbphy_driver(__gbphy_driver)	\
-	module_driver(__gbphy_driver, gb_gbphy_register, gb_gbphy_deregister)
-
-#ifdef CONFIG_PM
-static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev)
-{
-	struct device *dev = &gbphy_dev->dev;
-	int ret;
-
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0) {
-		dev_err(dev, "pm_runtime_get_sync failed: %d\n", ret);
-		pm_runtime_put_noidle(dev);
-		return ret;
-	}
-
-	return 0;
-}
-
-static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev)
-{
-	struct device *dev = &gbphy_dev->dev;
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev)
-{
-	pm_runtime_get_noresume(&gbphy_dev->dev);
-}
-
-static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev)
-{
-	pm_runtime_put_noidle(&gbphy_dev->dev);
-}
-#else
-static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev) { return 0; }
-static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev) {}
-static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev) {}
-static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev) {}
-#endif
-
-#endif /* __GBPHY_H */
-
diff -Naur --no-dereference a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c
--- a/drivers/staging/greybus/gpio.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/gpio.c	2022-06-12 13:07:42.551111715 -0400
@@ -15,32 +15,8 @@
 #include <linux/mutex.h>
 #include <linux/greybus.h>
 
-#include "gbphy.h"
+#include <linux/greybus/gbphy.h>
 
-struct gb_gpio_line {
-	/* The following has to be an array of line_max entries */
-	/* --> make them just a flags field */
-	u8			active:    1,
-				direction: 1,	/* 0 = output, 1 = input */
-				value:     1;	/* 0 = low, 1 = high */
-	u16			debounce_usec;
-
-	u8			irq_type;
-	bool			irq_type_pending;
-	bool			masked;
-	bool			masked_pending;
-};
-
-struct gb_gpio_controller {
-	struct gbphy_device	*gbphy_dev;
-	struct gb_connection	*connection;
-	u8			line_max;	/* max line number */
-	struct gb_gpio_line	*lines;
-
-	struct gpio_chip	chip;
-	struct irq_chip		irqc;
-	struct mutex		irq_lock;
-};
 #define gpio_chip_to_gb_gpio_controller(chip) \
 	container_of(chip, struct gb_gpio_controller, chip)
 #define irq_data_to_gpio_chip(d) (d->domain->host_data)
diff -Naur --no-dereference a/drivers/staging/greybus/i2c.c b/drivers/staging/greybus/i2c.c
--- a/drivers/staging/greybus/i2c.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/i2c.c	2022-06-12 13:07:42.551111715 -0400
@@ -12,16 +12,7 @@
 #include <linux/i2c.h>
 #include <linux/greybus.h>
 
-#include "gbphy.h"
-
-struct gb_i2c_device {
-	struct gb_connection	*connection;
-	struct gbphy_device	*gbphy_dev;
-
-	u32			functionality;
-
-	struct i2c_adapter	adapter;
-};
+#include <linux/greybus/gbphy.h>
 
 /*
  * Map Greybus i2c functionality bits into Linux ones
diff -Naur --no-dereference a/drivers/staging/greybus/pwm.c b/drivers/staging/greybus/pwm.c
--- a/drivers/staging/greybus/pwm.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/pwm.c	2022-06-12 13:07:42.551111715 -0400
@@ -12,7 +12,7 @@
 #include <linux/pwm.h>
 #include <linux/greybus.h>
 
-#include "gbphy.h"
+#include <linux/greybus/gbphy.h>
 
 struct gb_pwm_chip {
 	struct gb_connection	*connection;
diff -Naur --no-dereference a/drivers/staging/greybus/sdio.c b/drivers/staging/greybus/sdio.c
--- a/drivers/staging/greybus/sdio.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/sdio.c	2022-06-12 13:07:42.551111715 -0400
@@ -14,7 +14,7 @@
 #include <linux/workqueue.h>
 #include <linux/greybus.h>
 
-#include "gbphy.h"
+#include <linux/greybus/gbphy.h>
 
 struct gb_sdio_host {
 	struct gb_connection	*connection;
diff -Naur --no-dereference a/drivers/staging/greybus/spi.c b/drivers/staging/greybus/spi.c
--- a/drivers/staging/greybus/spi.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/spi.c	2022-06-12 13:07:42.551111715 -0400
@@ -9,7 +9,7 @@
 #include <linux/module.h>
 #include <linux/greybus.h>
 
-#include "gbphy.h"
+#include <linux/greybus/gbphy.h>
 #include "spilib.h"
 
 static struct spilib_ops *spilib_ops;
diff -Naur --no-dereference a/drivers/staging/greybus/spilib.c b/drivers/staging/greybus/spilib.c
--- a/drivers/staging/greybus/spilib.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/spilib.c	2022-06-12 13:07:42.551111715 -0400
@@ -14,24 +14,7 @@
 #include <linux/spi/spi.h>
 
 #include "spilib.h"
-
-struct gb_spilib {
-	struct gb_connection	*connection;
-	struct device		*parent;
-	struct spi_transfer	*first_xfer;
-	struct spi_transfer	*last_xfer;
-	struct spilib_ops	*ops;
-	u32			rx_xfer_offset;
-	u32			tx_xfer_offset;
-	u32			last_xfer_size;
-	unsigned int		op_timeout;
-	u16			mode;
-	u16			flags;
-	u32			bits_per_word_mask;
-	u8			num_chipselect;
-	u32			min_speed_hz;
-	u32			max_speed_hz;
-};
+#include <linux/greybus/gbphy.h>
 
 #define GB_SPI_STATE_MSG_DONE		((void *)0)
 #define GB_SPI_STATE_MSG_IDLE		((void *)1)
diff -Naur --no-dereference a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
--- a/drivers/staging/greybus/uart.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/uart.c	2022-06-12 13:07:42.551111715 -0400
@@ -30,7 +30,7 @@
 #include <linux/completion.h>
 #include <linux/greybus.h>
 
-#include "gbphy.h"
+#include <linux/greybus/gbphy.h>
 
 #define GB_NUM_MINORS	16	/* 16 is more than enough */
 #define GB_NAME		"ttyGB"
diff -Naur --no-dereference a/drivers/staging/greybus/usb.c b/drivers/staging/greybus/usb.c
--- a/drivers/staging/greybus/usb.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/staging/greybus/usb.c	2022-06-12 13:07:42.551111715 -0400
@@ -12,7 +12,7 @@
 #include <linux/usb/hcd.h>
 #include <linux/greybus.h>
 
-#include "gbphy.h"
+#include <linux/greybus/gbphy.h>
 
 /* Greybus USB request types */
 #define GB_USB_TYPE_HCD_START		0x02
diff -Naur --no-dereference a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
--- a/drivers/tty/serdev/core.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/tty/serdev/core.c	2022-06-12 13:07:42.551111715 -0400
@@ -27,12 +27,17 @@
 			     struct device_attribute *attr, char *buf)
 {
 	int len;
+	struct serdev_device *serdev = to_serdev_device(dev);
 
 	len = acpi_device_modalias(dev, buf, PAGE_SIZE - 1);
 	if (len != -ENODEV)
 		return len;
 
-	return of_device_modalias(dev, buf, PAGE_SIZE);
+	len = of_device_modalias(dev, buf, PAGE_SIZE);
+	if (len != -ENODEV)
+		return len;
+
+	return sprintf(buf, "%s%s\n", SERDEV_MODULE_PREFIX, serdev->modalias);
 }
 static DEVICE_ATTR_RO(modalias);
 
@@ -45,14 +50,18 @@
 static int serdev_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
 	int rc;
-
-	/* TODO: platform modalias */
+	struct serdev_device *serdev = to_serdev_device(dev);
 
 	rc = acpi_device_uevent_modalias(dev, env);
 	if (rc != -ENODEV)
 		return rc;
 
-	return of_device_uevent_modalias(dev, env);
+	rc = of_device_uevent_modalias(dev, env);
+	if (rc != -ENODEV)
+		return rc;
+
+	return add_uevent_var(env, "MODALIAS=%s%s", SERDEV_MODULE_PREFIX,
+							serdev->modalias);
 }
 
 static void serdev_device_release(struct device *dev)
@@ -83,16 +92,36 @@
 	.release	= serdev_ctrl_release,
 };
 
+static int serdev_match_id(const struct serdev_device_id *id,
+			   const struct serdev_device *sdev)
+{
+	while (id->name[0]) {
+		if (!strcmp(sdev->modalias, id->name))
+			return 1;
+		id++;
+	}
+
+	return 0;
+}
+
 static int serdev_device_match(struct device *dev, struct device_driver *drv)
 {
+	const struct serdev_device *sdev = to_serdev_device(dev);
+	const struct serdev_device_driver *sdrv = to_serdev_device_driver(drv);
+
 	if (!is_serdev_device(dev))
 		return 0;
 
-	/* TODO: platform matching */
 	if (acpi_driver_match_device(dev, drv))
 		return 1;
 
-	return of_driver_match_device(dev, drv);
+	if (of_driver_match_device(dev, drv))
+		return 1;
+
+	if (sdrv->id_table)
+		return serdev_match_id(sdrv->id_table, sdev);
+
+	return strcmp(sdev->modalias, drv->name) == 0;
 }
 
 /**
@@ -551,6 +580,17 @@
 	return 0;
 }
 
+struct serdev_controller *of_find_serdev_controller_by_node(struct device_node *node)
+{
+	struct device *dev = bus_find_device_by_of_node(&serdev_bus_type, node);
+
+	if (!dev)
+		return NULL;
+
+	return (dev->type == &serdev_ctrl_type) ? to_serdev_controller(dev) : NULL;
+}
+EXPORT_SYMBOL_GPL(of_find_serdev_controller_by_node);
+
 #ifdef CONFIG_ACPI
 
 #define SERDEV_ACPI_MAX_SCAN_DEPTH 32
@@ -770,6 +810,12 @@
 
 	pm_runtime_enable(&ctrl->dev);
 
+	/* provide option to not delete a serdev controller without devices
+	 * if property is present
+	 */
+	if (device_property_present(&ctrl->dev, "force-empty-serdev-controller"))
+		return 0;
+
 	ret_of = of_serdev_register_devices(ctrl);
 	ret_acpi = acpi_serdev_register_devices(ctrl);
 	if (ret_of && ret_acpi) {
diff -Naur --no-dereference a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
--- a/drivers/tty/serial/8250/8250_omap.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/tty/serial/8250/8250_omap.c	2022-06-12 13:07:42.551111715 -0400
@@ -1686,10 +1686,10 @@
 	}
 
 	add_preferred_console("ttyS", idx, options);
-	pr_err("WARNING: Your 'console=ttyO%d' has been replaced by 'ttyS%d'\n",
+	pr_info("WARNING: Your 'console=ttyO%d' has been replaced by 'ttyS%d'\n",
 	       idx, idx);
-	pr_err("This ensures that you still see kernel messages. Please\n");
-	pr_err("update your kernel commandline.\n");
+	pr_info("This ensures that you still see kernel messages. Please\n");
+	pr_info("update your kernel commandline.\n");
 	return 0;
 }
 console_initcall(omap8250_console_fixup);
diff -Naur --no-dereference a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
--- a/drivers/tty/serial/8250/8250_port.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/tty/serial/8250/8250_port.c	2022-06-12 13:07:42.551111715 -0400
@@ -563,11 +563,30 @@
  */
 static void serial8250_clear_fifos(struct uart_8250_port *p)
 {
+	unsigned char fcr;
+	unsigned char clr_mask = UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT;
+
 	if (p->capabilities & UART_CAP_FIFO) {
-		serial_out(p, UART_FCR, UART_FCR_ENABLE_FIFO);
-		serial_out(p, UART_FCR, UART_FCR_ENABLE_FIFO |
-			       UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT);
-		serial_out(p, UART_FCR, 0);
+		/*
+		 * Make sure to avoid changing FCR[7:3] and ENABLE_FIFO bits.
+		 * In case ENABLE_FIFO is not set, there is nothing to flush
+		 * so just return. Furthermore, on certain implementations of
+		 * the 8250 core, the FCR[7:3] bits may only be changed under
+		 * specific conditions and changing them if those conditions
+		 * are not met can have nasty side effects. One such core is
+		 * the 8250-omap present in TI AM335x.
+		 */
+		fcr = serial_in(p, UART_FCR);
+
+		/* FIFO is not enabled, there's nothing to clear. */
+		if (!(fcr & UART_FCR_ENABLE_FIFO))
+			return;
+
+		fcr |= clr_mask;
+		serial_out(p, UART_FCR, fcr);
+
+		fcr &= ~clr_mask;
+		serial_out(p, UART_FCR, fcr);
 	}
 }
 
@@ -1471,7 +1490,7 @@
 	 * Enable previously disabled RX interrupts.
 	 */
 	if (!(p->port.rs485.flags & SER_RS485_RX_DURING_TX)) {
-		serial8250_clear_and_reinit_fifos(p);
+		serial8250_clear_fifos(p);
 
 		p->ier |= UART_IER_RLSI | UART_IER_RDI;
 		serial_port_out(&p->port, UART_IER, p->ier);
diff -Naur --no-dereference a/drivers/uio/uio_pdrv_genirq.c b/drivers/uio/uio_pdrv_genirq.c
--- a/drivers/uio/uio_pdrv_genirq.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/uio/uio_pdrv_genirq.c	2022-06-12 13:07:42.551111715 -0400
@@ -276,11 +276,13 @@
 
 #ifdef CONFIG_OF
 static struct of_device_id uio_of_genirq_match[] = {
+	{ .compatible = "uio" },
+	{ .compatible = "ti,pruss-shmem" },
 	{ /* This is filled with module_parm */ },
 	{ /* Sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, uio_of_genirq_match);
-module_param_string(of_id, uio_of_genirq_match[0].compatible, 128, 0);
+module_param_string(of_id, uio_of_genirq_match[2].compatible, 128, 0);
 MODULE_PARM_DESC(of_id, "Openfirmware id of the device to be handled by uio");
 #endif
 
diff -Naur --no-dereference a/drivers/uio/uio_pruss.c b/drivers/uio/uio_pruss.c
--- a/drivers/uio/uio_pruss.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/uio/uio_pruss.c	2022-06-12 13:07:42.551111715 -0400
@@ -26,14 +26,22 @@
 #include <linux/dma-mapping.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
+#include <linux/of.h>
+#ifdef CONFIG_ARCH_DAVINCI_DA850
 #include <linux/genalloc.h>
+#else
+#include <linux/pm_runtime.h>
+#endif
 
 #define DRV_NAME "pruss_uio"
 #define DRV_VERSION "1.0"
 
+#ifdef CONFIG_ARCH_DAVINCI_DA850
 static int sram_pool_sz = SZ_16K;
 module_param(sram_pool_sz, int, 0);
-MODULE_PARM_DESC(sram_pool_sz, "sram pool size to allocate ");
+MODULE_PARM_DESC(sram_pool_sz, "sram pool size to allocate");
+#endif
+
 
 static int extram_pool_sz = SZ_256K;
 module_param(extram_pool_sz, int, 0);
@@ -61,22 +69,23 @@
 #define PINTC_HIER	0x1500
 
 struct uio_pruss_dev {
-	struct uio_info *info;
-	struct clk *pruss_clk;
-	dma_addr_t sram_paddr;
+	struct uio_info info[MAX_PRUSS_EVT];
 	dma_addr_t ddr_paddr;
 	void __iomem *prussio_vaddr;
-	unsigned long sram_vaddr;
 	void *ddr_vaddr;
-	unsigned int hostirq_start;
 	unsigned int pintc_base;
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+	struct clk *pruss_clk;
 	struct gen_pool *sram_pool;
+	dma_addr_t sram_paddr;
+	unsigned long sram_vaddr;
+#endif
 };
 
 static irqreturn_t pruss_handler(int irq, struct uio_info *info)
 {
 	struct uio_pruss_dev *gdev = info->priv;
-	int intr_bit = (irq - gdev->hostirq_start + 2);
+	int intr_bit = 2 + (info - gdev->info);
 	int val, intr_mask = (1 << intr_bit);
 	void __iomem *base = gdev->prussio_vaddr + gdev->pintc_base;
 	void __iomem *intren_reg = base + PINTC_HIER;
@@ -94,53 +103,66 @@
 
 static void pruss_cleanup(struct device *dev, struct uio_pruss_dev *gdev)
 {
-	int cnt;
-	struct uio_info *p = gdev->info;
+	int i;
 
-	for (cnt = 0; cnt < MAX_PRUSS_EVT; cnt++, p++) {
-		uio_unregister_device(p);
+	for (i = 0; i < MAX_PRUSS_EVT; i++) {
+		uio_unregister_device(&gdev->info[i]);
+		kfree(gdev->info[i].name);
 	}
 	iounmap(gdev->prussio_vaddr);
 	if (gdev->ddr_vaddr) {
 		dma_free_coherent(dev, extram_pool_sz, gdev->ddr_vaddr,
 			gdev->ddr_paddr);
 	}
+#ifdef CONFIG_ARCH_DAVINCI_DA850
 	if (gdev->sram_vaddr)
 		gen_pool_free(gdev->sram_pool,
 			      gdev->sram_vaddr,
 			      sram_pool_sz);
 	clk_disable(gdev->pruss_clk);
+	clk_put(gdev->pruss_clk);
+#else
+	pm_runtime_put(dev);
+	pm_runtime_disable(dev);
+#endif
+	kfree(gdev);
 }
 
 static int pruss_probe(struct platform_device *pdev)
 {
-	struct uio_info *p;
 	struct uio_pruss_dev *gdev;
 	struct resource *regs_prussio;
 	struct device *dev = &pdev->dev;
-	int ret, cnt, i, len;
+	int ret, i, len;
 	struct uio_pruss_pdata *pdata = dev_get_platdata(dev);
 
-	gdev = devm_kzalloc(dev, sizeof(struct uio_pruss_dev), GFP_KERNEL);
+	gdev = kzalloc(sizeof(struct uio_pruss_dev), GFP_KERNEL);
 	if (!gdev)
 		return -ENOMEM;
 
-	gdev->info = devm_kcalloc(dev, MAX_PRUSS_EVT, sizeof(*p), GFP_KERNEL);
-	if (!gdev->info)
-		return -ENOMEM;
-
+#ifdef CONFIG_ARCH_DAVINCI_DA850
 	/* Power on PRU in case its not done as part of boot-loader */
-	gdev->pruss_clk = devm_clk_get(dev, "pruss");
+	gdev->pruss_clk = clk_get(dev, "pruss");
 	if (IS_ERR(gdev->pruss_clk)) {
 		dev_err(dev, "Failed to get clock\n");
-		return PTR_ERR(gdev->pruss_clk);
+		ret = PTR_ERR(gdev->pruss_clk);
+		goto err_free_gdev;
 	}
 
 	ret = clk_enable(gdev->pruss_clk);
 	if (ret) {
 		dev_err(dev, "Failed to enable clock\n");
-		return ret;
+		goto err_clk_put;
 	}
+#else
+	pm_runtime_enable(dev);
+	ret = pm_runtime_get_sync(dev);
+	if (ret < 0) {
+		dev_err(dev, "pm_runtime_get_sync() failed\n");
+		pm_runtime_disable(dev);
+		goto err_free_gdev;
+	}
+#endif
 
 	regs_prussio = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!regs_prussio) {
@@ -155,6 +177,18 @@
 		goto err_clk_disable;
 	}
 
+	if (dev->of_node) {
+		ret = of_property_read_u32(dev->of_node,
+					   "ti,pintc-offset",
+					   &gdev->pintc_base);
+		if (ret < 0) {
+			dev_err(dev, "Can't parse ti,pintc-offset property\n");
+			goto err_clk_disable;
+		}
+	} else
+		gdev->pintc_base = pdata->pintc_base;
+
+#ifdef CONFIG_ARCH_DAVINCI_DA850
 	if (pdata->sram_pool) {
 		gdev->sram_pool = pdata->sram_pool;
 		gdev->sram_vaddr =
@@ -166,9 +200,10 @@
 			goto err_clk_disable;
 		}
 	}
+#endif
 
 	gdev->ddr_vaddr = dma_alloc_coherent(dev, extram_pool_sz,
-				&(gdev->ddr_paddr), GFP_KERNEL | GFP_DMA);
+				&gdev->ddr_paddr, GFP_KERNEL | GFP_DMA);
 	if (!gdev->ddr_vaddr) {
 		dev_err(dev, "Could not allocate external memory\n");
 		ret = -ENOMEM;
@@ -178,56 +213,85 @@
 	len = resource_size(regs_prussio);
 	gdev->prussio_vaddr = ioremap(regs_prussio->start, len);
 	if (!gdev->prussio_vaddr) {
-		dev_err(dev, "Can't remap PRUSS I/O  address range\n");
+		dev_err(dev, "Can't remap PRUSS I/O address range\n");
 		ret = -ENOMEM;
 		goto err_free_ddr_vaddr;
 	}
 
-	gdev->pintc_base = pdata->pintc_base;
-	gdev->hostirq_start = platform_get_irq(pdev, 0);
+	for (i = 0; i < MAX_PRUSS_EVT; i++) {
+		struct uio_info *p = &gdev->info[i];
 
-	for (cnt = 0, p = gdev->info; cnt < MAX_PRUSS_EVT; cnt++, p++) {
+		p->mem[0].name = "pruss";
 		p->mem[0].addr = regs_prussio->start;
 		p->mem[0].size = resource_size(regs_prussio);
 		p->mem[0].memtype = UIO_MEM_PHYS;
 
+		/* note: some userspace code uses hardcoded mem indices... */
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+		p->mem[1].name = "sram";
 		p->mem[1].addr = gdev->sram_paddr;
 		p->mem[1].size = sram_pool_sz;
 		p->mem[1].memtype = UIO_MEM_PHYS;
 
+		p->mem[2].name = "ddr";
 		p->mem[2].addr = gdev->ddr_paddr;
 		p->mem[2].size = extram_pool_sz;
 		p->mem[2].memtype = UIO_MEM_PHYS;
+#else
+		p->mem[1].name = "ddr";
+		p->mem[1].addr = gdev->ddr_paddr;
+		p->mem[1].size = extram_pool_sz;
+		p->mem[1].memtype = UIO_MEM_PHYS;
+#endif
+
+		ret = platform_get_irq(pdev, i);
+		if (ret < 0) {
+			dev_err(dev, "Failed to obtain irq %d (%d)\n", i, ret);
+			goto err_unloop;
+		}
 
-		p->name = devm_kasprintf(dev, GFP_KERNEL, "pruss_evt%d", cnt);
+		p->name = kasprintf(GFP_KERNEL, "pruss_evt%d", i);
 		p->version = DRV_VERSION;
 
 		/* Register PRUSS IRQ lines */
-		p->irq = gdev->hostirq_start + cnt;
+		p->irq = ret;
 		p->handler = pruss_handler;
 		p->priv = gdev;
 
 		ret = uio_register_device(dev, p);
-		if (ret < 0)
+		if (ret < 0) {
+			kfree(p->name);
 			goto err_unloop;
+		}
 	}
 
 	platform_set_drvdata(pdev, gdev);
 	return 0;
 
 err_unloop:
-	for (i = 0, p = gdev->info; i < cnt; i++, p++) {
-		uio_unregister_device(p);
+	while( --i >= 0 ) {
+		uio_unregister_device(&gdev->info[i]);
+		kfree(gdev->info[i].name);
 	}
 	iounmap(gdev->prussio_vaddr);
 err_free_ddr_vaddr:
 	dma_free_coherent(dev, extram_pool_sz, gdev->ddr_vaddr,
 			  gdev->ddr_paddr);
 err_free_sram:
+#ifdef CONFIG_ARCH_DAVINCI_DA850
 	if (pdata->sram_pool)
 		gen_pool_free(gdev->sram_pool, gdev->sram_vaddr, sram_pool_sz);
 err_clk_disable:
 	clk_disable(gdev->pruss_clk);
+err_clk_put:
+	clk_put(gdev->pruss_clk);
+#else
+err_clk_disable:
+	pm_runtime_put(dev);
+	pm_runtime_disable(dev);
+#endif
+err_free_gdev:
+	kfree(gdev);
 
 	return ret;
 }
@@ -240,11 +304,19 @@
 	return 0;
 }
 
+static const struct of_device_id pruss_dt_ids[] = {
+	{ .compatible = "ti,pruss-v1" },
+	{ .compatible = "ti,pruss-v2" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, pruss_dt_ids);
+
 static struct platform_driver pruss_driver = {
 	.probe = pruss_probe,
 	.remove = pruss_remove,
 	.driver = {
 		   .name = DRV_NAME,
+		   .of_match_table = pruss_dt_ids,
 		   },
 };
 
diff -Naur --no-dereference a/drivers/w1/w1.c b/drivers/w1/w1.c
--- a/drivers/w1/w1.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/w1/w1.c	2022-06-12 13:07:42.551111715 -0400
@@ -683,7 +683,8 @@
 	sl->dev.of_node = of_find_matching_node(sl->master->dev.of_node,
 						sl->family->of_match_table);
 
-	dev_set_name(&sl->dev, "%02x-%012llx",
+	dev_set_name(&sl->dev, "%s-%02x-%012llx",
+		 sl->master->name,
 		 (unsigned int) sl->reg_num.family,
 		 (unsigned long long) sl->reg_num.id);
 	snprintf(&sl->name[0], sizeof(sl->name),
diff -Naur --no-dereference a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
--- a/drivers/w1/w1_int.c	2022-05-30 03:29:18.000000000 -0400
+++ b/drivers/w1/w1_int.c	2022-06-12 13:07:42.551111715 -0400
@@ -243,3 +243,31 @@
 	__w1_remove_master_device(found);
 }
 EXPORT_SYMBOL(w1_remove_master_device);
+
+/**
+ * w1_find_master_device() - find a master device
+ * @bm:	master bus device to search
+ */
+struct w1_master *w1_find_master_device(struct w1_bus_master *bm)
+{
+	struct w1_master *dev, *found = NULL;
+
+	list_for_each_entry(dev, &w1_masters, w1_master_entry) {
+		if (!dev->initialized)
+			continue;
+
+		if (dev->bus_master->data == bm->data) {
+			found = dev;
+			break;
+		}
+	}
+
+	if (!found) {
+		pr_err("device doesn't exist.\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	return found;
+}
+EXPORT_SYMBOL(w1_find_master_device);
+
diff -Naur --no-dereference a/firmware/am335x-bone-scale-data.bin b/firmware/am335x-bone-scale-data.bin
--- a/firmware/am335x-bone-scale-data.bin	1969-12-31 19:00:00.000000000 -0500
+++ b/firmware/am335x-bone-scale-data.bin	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1 @@
+W#d$m$$m$$l$†$l$†d$m$$m$$l$†$l$†
\ No newline at end of file
diff -Naur --no-dereference a/firmware/am335x-evm-scale-data.bin b/firmware/am335x-evm-scale-data.bin
--- a/firmware/am335x-evm-scale-data.bin	1969-12-31 19:00:00.000000000 -0500
+++ b/firmware/am335x-evm-scale-data.bin	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1 @@
+Wd-%d-%+
\ No newline at end of file
diff -Naur --no-dereference a/firmware/am335x-pm-firmware.bin b/firmware/am335x-pm-firmware.bin
--- a/firmware/am335x-pm-firmware.bin	1969-12-31 19:00:00.000000000 -0500
+++ b/firmware/am335x-pm-firmware.bin	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,34 @@
+™éíñõùý•••••••••••••••••É••••••••••••••å•E
Y
�
±
•••Å
Ù
í
)=Qey�¡µÉJhCôÉs`pG0áDð<¹KD›hpG¿ÊD8KD›`pG¿ÊD8KJh›²`pG,áDœKhZ*	ØJëƒëƒ˜h0¿ pG pG¿œ#J$Khhð´#Mð"J/`"NÃóÀp!L"HÃó!JÃó€%7`ÃóÀ#p%pHhJh`S��hÐHI€è0P`˜Dëƒ›hHð¼GiðÑI	h)Ð˜IÄë„dh±T`éçI˜ÄQø$@,öÑáç<áD8áD°™¬˜¨0áD4áDœ¸Oðÿ3´HLIJ#``]øK``pG4áD0áD8áD<áDJhCôÉs`pG0áDJh›²Cê@`pG¿,áDJh#ðÿC`pG¿@áDKJhëƒëƒ|pG¿œKJhëƒëƒX|pG¿œµð×ü$ðÜü F4ð¨ü4,ùÑKöŒJhšBÐÿ÷œÿðrøðòùðþù ð�ü5 ð~üÿ÷¤ÿ ðøOôÉrI ð½ø ½ Fð‚üàç¿¼X$µÿ÷Çÿ0¿ýç¿µÿ÷‘ÿ@¿½¿µÿ÷‹ÿ@¿" ð}ü½è@" ðP¼µÿ÷ÿ" ðrü½è@" ðE¼¿µ$ FðSü F4ðcü4,öÑKöŒJhšBÐðøð›ù ð,ü5 ð)ü ðÜÿ ÿ÷Uÿ@¿½ Fð2ü FðCüæç¼pG¿pG¿pG¿pG¿pG¿2±FÉ²Dø“BûÑpG¿xC!±ø+*úÑFpGøµLF!h
+MI±K«B#`¿Kp¿#` ø½Oê8Fÿ÷×ÿ9Fîç¿ 8µFx8±%Fÿ÷Ûÿø(ùÑ`8½¿øµFxx±i±F<F}à¬B	Ðÿ÷Çÿø(÷Ñàø½Fø½0Fø½¿´K0µh‚°ƒBÚ °½è0@°pGïó…r¶KJhRø  LH`ð>û«FD˜“ðøD
+ ÿ÷—ÿ…óˆ F°½è0@°pG¿T€$”$K`pG¿T-éðO$F‹F'F‘°®Feà(tÐÿ÷rÿ¶FvFøë%(!FòÑ/òÑ;FOð :Fžø— ñ#u¼ñWòè�ßèðÿææææææ æ%.........ææææææææææææææææææææææææææææææPææææææææææUËæææÞË^æcæm|Žæ“Æ\ææ÷æú F°½èð�
+ �Þ#ô€iñÚ�Ú@ñé�ñ#ðÓø ñô€oÐºñ¼¿IôyÊñ
+	ô€^#rF�ø0ŽF
ñSF”FàfF³ûðòû3·Lã\Y±£ña¼ñŒ¿OðOð £ëÛ²´Fø;F*åÑ«óœ“ô€sqF“
+ÐºñÐ›+ðï�›+ðï�ôs“ðE�›ð€	ñ“ð‹�- Lÿ÷“þ›S±ºñÐ›+ðù�›+ð�¹ñðM�0xP±ÿ÷~þø
4(øÑ¹ñ?ôü®›+?ôø®š£ë	¹ñ÷ñ®	ñÿ6>@Fÿ÷dþsùÑLDææ �cçpxCð@.F÷æpxCô€s.Fòæÿ÷Qþ4Õæñc�Ûøñ(�Àò¸�px.FàæpxCô€c.FÛæpxCð€.FÖæpxCôc.FÑæôj@ðc�pxOð0.FÈæ–ø� ñ0©ñ0	(˜¿ôjò¹€.FëŒ	ëLøŸ¬ñ0©ñ0	(óÙHFºñ�¿eFbF•¦æ Cô€S�çÛøñ4ÿ÷ûý³FæpxCð.F“æ˜@ñ3�#ðpxCð.F‰æÞñì€Ø@ñC�"FÛøãÁé#ñaæ �Þæš*@ð�Cô€s �Ûø #ô€iñßæpxCð.FcæÛø�ñ‘¹ñð&�HF“’ÿ÷¬ýš›Õ�B’FØF‚F™¡ë"êâvñÃ€ñÿ;>±ñÿ;@Fÿ÷�ý»ñÿ?÷ÑQFHFÿ÷Âý4DDÝø°æpxCð .F+æÞCô€iñ’€Ú@ñÓ€
+ ñ#ðñÓø ��æ@ñˆ€#ðCð,ç¥ëpFÿ÷˜ý'DïåHÿ÷„ýDÝæHF.FôjOç¿Ä$ô$ð€	AÑ¸ñ0Ð›ƒ±š›+“Ýñÿ9	ñÿ9@Fÿ÷Fý¹ñÿ?÷Ñ›D›+@ðÓ€›+±ºñÐOð	¦æ›ƒ±š›+“Ýñÿ9	ñÿ9@Fÿ÷'ý¹ñÿ?÷Ñ›D0x(?ô¥­Oð	šæ�Ûø ñ+æ›+?ô�®ºñ?ô‹®}æ¸ñ0´ÑpæžëÔšéÔ^çÔ{Õ»ø ñæÛø0ñ`{å
+ Ûø �ñæpxCð.FˆåpxÛø .Fñ�åHFQFÿ÷
+ýñÿ9D>±	ñÿ9@Fÿ÷Õü¹ñÿ?÷Ñ4DÝø°Tå#ô€søævx ñ0¦ñ0	(±Fö¥®0FbF.F]åpxCð.FXå›3“æ›3“æž¹Ô˜·ÔZµÔOð
+*Õ»ù �ñ·å™£ÔZ¡Ô'ÕÛø0ñ€å ßøX�Üæ0 4ÿ÷�üæpxžƒð€vB–.F#å^õg¯›ø ñ’åZõ^¯›ø �ñ‰åXõu¯Ûø0ñpðä!FOð	Îåì$´µƒ°«SøF“ÿ÷Úü°]øë°pG¿þç¿JKšB
ÒÑCD
H!ð1FDSøƒBBøùÑH	IOðˆB¸¿@ø+úÛÿ÷Ç»¿Ä4*Àþç¿þç¿þç¿þç¿þç¿þç¿þç¿þç¿µ ð6ú¹þç ½ñŠA¡õá`pGñŠ@ õáhpG#ABððX¿JB(¸¿0@€ñ`@“@õa@`pG#ABððX¿JB(úó¸¿0J@Bø 0pG€áà#ABððX¿JB(úó¸¿0J@Bø 0pG€âàJhCð`pGíàJhCð`pGíàµ ÿ÷Äÿ ðùûKh`½¿ßDµ ÿ÷¶ÿÿ÷0úÿ÷8ú¨±ÿ÷áúFH¹ÿ÷ëú°¹ÿ÷Dú½è@ ÿ÷�¿ ÿ÷0û½è@ ÿ÷‡¿ ÿ÷¶ú½è@ ÿ÷¿ Fÿ÷,û½è@ ÿ÷w¿¿µ! ÿ÷†ÿ½è@! ð¹»¿µ$ Fÿ÷{ÿ F4ÿ÷‹ÿ4,öÑKöŒ	JhšBÐ½è@ÿ÷º Fÿ÷hÿ Fÿ÷yÿ½è@ÿ÷ý¹¿¼µ# ÿ÷Zÿ½è@# ð�»¿µ$ ÿ÷Pÿ½è@$ ðƒ»¿µ( ÿ÷Fÿ½è@( ðy»¿µ) ÿ÷<ÿ½è@) ðo»¿µ* ÿ÷2ÿ½è@* ðe»¿µ+ ÿ÷(ÿ½è@+ ð[»¿µ, ÿ÷ÿ½è@, ðQ»¿µ- ÿ÷ÿ½è@- ðG»¿µ. ÿ÷
+ÿ½è@. ð=»¿µ/ ÿ÷ÿ½è@/ ð3»¿µ0 ÿ÷öþ½è@0 ð)»¿µ1 ÿ÷ìþ½è@1 ð»¿µ2 ÿ÷âþ½è@2 ð»¿µ3 ÿ÷Øþ½è@3 ð»¿µ4 ÿ÷Îþ½è@4 ð»¿µ5 ÿ÷Äþÿ÷>ùÿ÷Fùˆ±ÿ÷ïù0¹ÿ÷Vù½è@5 ÿ÷¡¾ ÿ÷Bú½è@5 ÿ÷™¾ ÿ÷Èù½è@5 ÿ÷‘¾¿KhhhÛüÔpG¿KhhhÛüÕpG¿KhSø  h#ð`pG¿KhSø  hCð`pG¿KöDKh“BÐKöŒ“BÐpGKJ`pGKJ`pG¿¼�)ˆ&"K`Z`š`Ú`aZapG¿ KöDKh“BÐKöŒ“BÐpG	K	H
+I
+J˜aÙabpGKH	I	J˜aÙabpG¿¼ `)())à)¨)˜)
+Jp´jëAëÁmhTø1›h-hÔÐPf`¥``p¼ pG¿ Kp´Ûi„ˆEyYk˜iÚiÄóÁŒ@Åó@$ê‘@hXh!CÅó€!ê‚@žhÜh
+CÅóÀi"ê @C1±[iÅó�@ ê(Cp¼pG Jy‘ip´Êj
hHhð”@Ãó€$êiMi‚@"CÃóÀŒh"ê¨@ÉhCÃó ê‹@Cp¼pG Kë@jë�Rø0 [h`pG¿ KjëÀChhðpG¿ 
+Kj“è	hhJ@’Ð pGÚh™hhhX@ð¿ pG¿ µDh‰ð¡üÿ÷Yý x˜!¿ðOô€0¿$ÿ÷Uý€ ÿ÷Xý€! Dÿ÷NýKh,Ð½ðSùð£ÿ Fð„ÿ½è@ ð¿¿œ8µ7K7JhFëƒëƒ›|Dh+YÑ(‰ðhüàˆÀó�ðû h.K@³ÀóOðÝú Fÿ÷.ÿF Fÿ÷Xÿ!ÿ÷ÿ!(Fÿ÷ÿðùðùðÍý ðHÿðbÿ#xÛÕKx+³þçFöu ð¹úÚçð¢úKöDKh“BÐKöŒ“BêÑ ÿ÷]ÿ(åÑJ hCð`ÿ÷{þ ÿ÷bþKx+ÙÑ½è8@ ð¿ð›û¢çKh+ßÑÉç¿œþÿ¨¼ áD´8µ"K"JhFëƒëƒ›|Dh‹»(‰ðëû#xÛ(ÕàˆÀó�ð…ú hK@Ó±ÀóOð]ú Fÿ÷®þF Fÿ÷Øþ!ÿ÷�þ!(Fÿ÷‹þðQý ðÌþKx[±þçFöu ðBúãçð+úÓçðFûÊç ½è8@ð¸¾œþÿ¨8µ!K!JhFëƒëƒ›|Dhs»(‰ð�û#xÛ%ÕàˆÀó�ð7ú hK@»±ÀóOðú Fÿ÷`þF Fÿ÷Šþ!ÿ÷Aþ!(Fÿ÷=þðý
Kx[±þçFöu ð÷ùæçðàùÖçðûúÍç ½è8@ðm¾¿œþÿ¨8µKJhFëƒëƒ›|DhS»(‰ðQûàˆÀó�ðîù hK@Ë±ÀóOðÆù Fÿ÷þF Fÿ÷Aþ!ÿ÷øý!(Fÿ÷ôý ð7þ	Kx±þç8½Föu ð¬ùäçð³úÑçœþÿ¨µChØˆÀó�ð¹ù½è@ ð¾8µF lhð ý(‰ð	ûàˆÀó�ð¦ù Fÿ÷×ýF Fÿ÷þ!ÿ÷¸ý(F!ÿ÷´ý#yð+Ð ð„ÿ½è8@ ðí½¿pG¿pµFþ÷Jþ(EÐ(M)L+hëƒëƒÛh+;Ð˜G0Fþ÷ÜþkhxÛÔðDùh‰ð«ú+hëƒëƒ›|C» ðCÿ$ Fÿ÷�û F4ÿ÷­û4,öÑKöŒJhšBÑ Fÿ÷Žû Fÿ÷Ÿûþ÷_ÿðßø ÿ÷pû5 ÿ÷mû½èp@ ð¿þçðGú+hëƒëƒ£|+ÏÑËçœ¼pG¿KöDKµh“B!ÐKöŒ“B!Ðÿ÷»ýF ÿ÷�ý ÿ÷šý ð�ýð“ýð5üðAÿð+ÿ Fþ÷dþð ù½è@ ðo½Kh+ÝÐ ÿ÷¨ü ÿ÷‘üÖç¼´µÿ÷�ýF ÿ÷oý ÿ÷lý ðSýð	üðÿ Fþ÷:þðvù½è@ ðE½¿µÿ÷qýF ÿ÷Sý ÿ÷Pý ð7ýðíû Fþ÷ þ@¿½è@ðY¹¿µÿ÷YýF ÿ÷;ý ÿ÷8ýðÒþð8ý Fþ÷	þðEù½è@ ð½µð=ù½è@ ð½µÿ÷9ýF ÿ÷ý ÿ÷ýðýð°þ Fþ÷éýð%ù ðöü½è@ ð
¼¿KFhAð€q`h›üÔpG$@ßDKFh!ð€q`h›üÕpG$@ßD"µK`Z`ÿ÷Eü½è@ð
¼¿œ
KHhIµJÃó4``hJÃó#`ðHüðþýÿ÷4üðüû½è@ÿ÷¼áD¼´@áD¸J hCô3`pG¿páDJ h#ô3`pG¿páDJhC`pG¿páDOôqKJ`hC`pG¿ßDßDJh#ôs`pGßD8µIKñˆt`d#h+,Ñch+/Ñ#j+2Ñ#i+5Ñci+8Ñ£i+;Ñ£h+>Ñãh+AÑãi+DÑKöŒ9M*hšBGÐ£j+dÑ#k+]Ñãj+MÑKöŒ*hšBPÐ8½! ÿ÷óùch+ÏÐ( ÿ÷íù#j+ÌÐ3 ÿ÷çù#i+ÉÐ- ÿ÷áùci+ÆÐ. ÿ÷Ûù£i+ÃÐ/ ÿ÷Õù£h+ÀÐ* ÿ÷Ïùãh+½Ð, ÿ÷Éùãi+ºÐ2 ÿ÷ÃùKöŒM*hšB·Ñck+´Ð ÿ÷·ùOôqKJ`hC`¨ç0 ÿ÷«ùKöŒ*hšB®Ñ½è8@4 ÿ÷¡¹$ ÿ÷žù�ç# ÿ÷šù–ç¿D¼ßDßD"8µ"K! `ÿ÷�ù( ÿ÷šù) ÿ÷—ù* ÿ÷”ù+ ÿ÷‘ù, ÿ÷Žù- ÿ÷‹ù. ÿ÷ˆù/ ÿ÷…ù0 ÿ÷‚ù1 ÿ÷ù2 ÿ÷|ù3 ÿ÷yù# ÿ÷vù$ ÿ÷sùKöŒM,hœBÐ8½	J h#ôs`ÿ÷dù+h£BóÑ½è8@4 ÿ÷\¹D¼ßDµðÛùð%ùð½ù
Kx±ÿ÷ŠþðŒù ÿ÷Áú ðtú ðqú ðnú ðkú½è@ ðfº˜µ ðzú ðwú ðtú ðqú ðnú ÿ÷�úðIù ð¼üðlù	KxC¹ðùøKöDJhšBÐ½ÿ÷Vþóç½è@ð›¹¿˜¼8µOöÿs˜BÐF ð¿üF ð•üõ ð?ûF
± F8½ ðœü F8½$ F8½¿ÿ÷à¿Kx±æpG¿˜Kx±æpG¿˜KöŒIð´hINMLH	h6hK-h$hh‘B`^`�`Ü`aÑIJ	hhYašað¼pG¿áD¼áDáD@áDDáDHHáDLáDøµÿ÷ËÿKh#¹
Kh;+
ÙJK
O
NMLIH:`2`+`#``ø½
JhCð€S`ëç¿´°ð?‹àÿ@áDDáDáDáDáD‹	 ÿáD8µÿ÷•ÿMKLHIJ+`#```h+Ð+Ð8½Oð`oðbIK``8½%Oðÿ0
JhCô€s`Dø<\Aø@8½¿@áDð?DáDHáDLáD°áDáD`áDKöDKh“BÐKöŒ“BÐpGÿ÷·¿ÿ÷¿¿¼KöDJð´h™BÐKöŒKHh]hLŸh`Þh%`iM‡`.`dhŠBÑšiXiIK``ð¼pGKh+àÑ
Kh;+ÛØIh#ð€S`Õç¿¼HáDáD@áDHáDLáD´°áD !	KF``hAð@`hðAð``h›üÕpG¿áDKh+¿"KJK`pG°áDµ	Kx¹½ ðFû#IJ	h ‹@`½è@ðM»¿™¬”qàDµ	Kx¹½ ð,û#IJ	h ‹@`½è@ð3»¿™¬�qàDKh+ÑJhCðC`pG°áDKh+ÑJh#ðC`pG°áD Jð´h,:Ð#hY7ÐPhÃëÃPø3PëÃ.hJh2C*`Pø3PJi.h2C*`Pø3`�hÍh2h=C*C2`Pø3P
+i.h2C*`Pø3PŽi*h"ê*`Pø3 Íih#ê`KjŠj	jChBüÑTø?ZÈÑð¼pGd#Jðµh.@Ð3hY=Ð¶FUhÃëÃUø4 ëÄhÃiC`j‚jhBüÐUø4 ƒihC`jBjhBüÐUø4i
+h^ø?"ê
+`Uø4pÁh†h:h1C"ê:`Uø4Gi
+h"ê
+`Uø4@h
+h"ê
+`ZÃÑð½¿dKÀëÀZh´ëÁÔjë€ h ðAð!`k˜`h+üÑ]øKpGd
+KÀëÀZhë€›hëÁÐjð)`ÐpGkh+üÐpG¿dKÀëÀ[hëÀCkhÀ²pGd"Kš`Ú`aZašapGdKöDKh“B
+ÐKöŒ“BÐpG	K	I
+JY``pG	JK	IhY`*ñÐJ`pG¿¼d''´p%`%µK„°
ñËéLª#h+´¿ÃóAsÃó�SëƒSø°½¿ü&@áDKöDKh“BÐKöŒ“BÐpGKH	I	JƒèpGKHI	JƒèpG¿¼€d(<(4(Ø(¬(¤(K(hOðSø! h#ð¿CðCð`pG¿€8µF	hJÐFà8¹(Fÿ÷áÿTøK÷Ñ8½8½ ûç¿KhSø 8±hð ñ°ú€ð@	pG€KhSø  h#ðCð`pG¿€KhSø  h#ðCð`pG¿€K Yh»ç€K Yhµç€K ™h¯ç€-éðOOð	FFhJiKÒø€ßø°á³øÀfMgHgI¾øà(ð-ˆ‡°ˆ	ˆ`úŒò£ø�’úŽò’ª²sxø{’‚²’Š²Gê'’ÿ÷%ÿFHFÿ÷áþ-¸¿5/¿;F#­•ûóóëÓrRQñ�€ÿ)@ó�€ÿ!Oô‚r›;ñ�€ÿ+@ó…€ÿ#%OôBOöÿwBH€BM€8+€ øˆ>KAI€€€²x*DÐœFHòkßøø ßøø�ŽFl09Oôzsà;PÐ
ˆíúÔ®øpfxUªø`’²¦©ø 2Fí²ë¬ø°#D®øpøKšB€úÑ5Oôzrtà[Ô:Ðˆ›²ðöÐOöÿrOðÿ0 K€°½èð�®øpr]*ÄÑ ½øPKI€J
€½øPL€½øP%€½ø@€½ø0!ø„<Bø¤Œ°½èð�OöÿrOðÿ0K€°½èð�#€ç!"uç‰²sç›²yç¿°àD¤°àD°°àD´°àD¸°àD(°àD,°àD¬°àD˜°àDhZ5Ðð´F%Jh`¹Wø#@Oöÿr `à:Ð#hÃóC+øÑVø?j\ÐFêçë…
à<¥BÐ(úÑ"hOöÿsWø"`à;ñÐ
+hô@?ùÑ<¥BíÑ ð¼pG pG¿ŒKöDKh“BÐKöŒ“BÐpGKH	I	JƒèpGKHI	JƒèpG¿¼ŒÀ&¨&�&$%%ø$"IOöÿs	hQø 
+`à;Ð
+hô@?ùÑpGŒ#IOöÿr	hQø `à:ÐhÃóC+øÑpG¿ŒKhSø 0hð ñ°ú€ð@	pG¿ŒµK Yhÿ÷\ÿ ½ŒµK Yhÿ÷Rÿ ½ŒµK ™hÿ÷Hÿ ½ŒµK ™hÿ÷>ÿ ½ŒBooted version 0x%x of CM3 PM Firmware. $¤$¬$´$¼$[%08x]%s:   ERR WARN INFO DEBUG0123456789abcdefghijklmnopqrstuvwxyz(null)0x
+	ÿÿÿÿÿÿÿÿLàD(àDÐàDàD¸àDäàDààDÜàDdàD àD`àDàD,àDÿÿÿÿáD€ áDŒàDpàDœàDáD€ áD˜àDHàDTàDáD€ áD”àD4àD@àDˆàD àD,àD�àD\àDhàDàDàD
+	ÿÿÿÿ
ÿÿÿÿ8*ßD �ßD0�ßDh+ßD@+ßD(ŠßD ˆßD@ˆßD¨ˆßD ˆßD ŒßD ƒßDPˆßD8�ßD ”ßDKÀ]¨a�eÿÿÿÿáD€ áDà-ßDä-ßDì-ßDáD€ áD .ßD$.ßD,.ßDáD€ áD -ßD¤-ßD¬-ßD`-ßDd-ßDl-ßD -ßD$-ßD,-ßDÿÿÿÿ
ÿÿÿÿ)ßDƒßD“ßD’ßD�ßD‹ßDˆßDŠßDŒßD�ßD”ßD+ßDÿÿÿÿ

+	ÿÿÿÿàDPàDDàD@àDàDàDàDàDàDHàD,àDàDàDßDßDßDßD	
+
+	@ßD@ßDàDàDàDàD €€@GNUe‚‰â½geÛWÓ…;°¨q2W¸I…¸I…¬ ¥‰¬ ¥‰”ˆ¡ù”ˆ¡ù|=1|=1ÅpÕapÕaXq¡-dY‘€ ƒ ëÔ€üÿêÔƒüßêÔ…üßêÔ€üßêÔ…üßêÔ€üßlog_buf
\ No newline at end of file
diff -Naur --no-dereference a/firmware/am335x-pm-firmware.elf b/firmware/am335x-pm-firmware.elf
--- a/firmware/am335x-pm-firmware.elf	1969-12-31 19:00:00.000000000 -0500
+++ b/firmware/am335x-pm-firmware.elf	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,388 @@
+ELF(4M4 (4*4*4*ÀQåtd™éíñõùý•••••••••••••••••É••••••••••••••å•E
Y
�
±
•••Å
Ù
í
)=Qey�¡µÉJhCôÉs`pG0áDð<¹KD›hpG¿ÊD8KD›`pG¿ÊD8KJh›²`pG,áDœKhZ*	ØJëƒëƒ˜h0¿ pG pG¿œ#J$Khhð´#Mð"J/`"NÃóÀp!L"HÃó!JÃó€%7`ÃóÀ#p%pHhJh`S��hÐHI€è0P`˜Dëƒ›hHð¼GiðÑI	h)Ð˜IÄë„dh±T`éçI˜ÄQø$@,öÑáç<áD8áD°™¬˜¨0áD4áDœ¸Oðÿ3´HLIJ#``]øK``pG4áD0áD8áD<áDJhCôÉs`pG0áDJh›²Cê@`pG¿,áDJh#ðÿC`pG¿@áDKJhëƒëƒ|pG¿œKJhëƒëƒX|pG¿œµð×ü$ðÜü F4ð¨ü4,ùÑKöŒJhšBÐÿ÷œÿðrøðòùðþù ð�ü5 ð~üÿ÷¤ÿ ðøOôÉrI ð½ø ½ Fð‚üàç¿¼X$µÿ÷Çÿ0¿ýç¿µÿ÷‘ÿ@¿½¿µÿ÷‹ÿ@¿" ð}ü½è@" ðP¼µÿ÷ÿ" ðrü½è@" ðE¼¿µ$ FðSü F4ðcü4,öÑKöŒJhšBÐðøð›ù ð,ü5 ð)ü ðÜÿ ÿ÷Uÿ@¿½ Fð2ü FðCüæç¼pG¿pG¿pG¿pG¿pG¿2±FÉ²Dø“BûÑpG¿xC!±ø+*úÑFpGøµLF!h
+MI±K«B#`¿Kp¿#` ø½Oê8Fÿ÷×ÿ9Fîç¿ 8µFx8±%Fÿ÷Ûÿø(ùÑ`8½¿øµFxx±i±F<F}à¬B	Ðÿ÷Çÿø(÷Ñàø½Fø½0Fø½¿´K0µh‚°ƒBÚ °½è0@°pGïó…r¶KJhRø  LH`ð>û«FD˜“ðøD
+ ÿ÷—ÿ…óˆ F°½è0@°pG¿T€$”$K`pG¿T-éðO$F‹F'F‘°®Feà(tÐÿ÷rÿ¶FvFøë%(!FòÑ/òÑ;FOð :Fžø— ñ#u¼ñWòè�ßèðÿææææææ æ%.........ææææææææææææææææææææææææææææææPææææææææææUËæææÞË^æcæm|Žæ“Æ\ææ÷æú F°½èð�
+ �Þ#ô€iñÚ�Ú@ñé�ñ#ðÓø ñô€oÐºñ¼¿IôyÊñ
+	ô€^#rF�ø0ŽF
ñSF”FàfF³ûðòû3·Lã\Y±£ña¼ñŒ¿OðOð £ëÛ²´Fø;F*åÑ«óœ“ô€sqF“
+ÐºñÐ›+ðï�›+ðï�ôs“ðE�›ð€	ñ“ð‹�- Lÿ÷“þ›S±ºñÐ›+ðù�›+ð�¹ñðM�0xP±ÿ÷~þø
4(øÑ¹ñ?ôü®›+?ôø®š£ë	¹ñ÷ñ®	ñÿ6>@Fÿ÷dþsùÑLDææ �cçpxCð@.F÷æpxCô€s.Fòæÿ÷Qþ4Õæñc�Ûøñ(�Àò¸�px.FàæpxCô€c.FÛæpxCð€.FÖæpxCôc.FÑæôj@ðc�pxOð0.FÈæ–ø� ñ0©ñ0	(˜¿ôjò¹€.FëŒ	ëLøŸ¬ñ0©ñ0	(óÙHFºñ�¿eFbF•¦æ Cô€S�çÛøñ4ÿ÷ûý³FæpxCð.F“æ˜@ñ3�#ðpxCð.F‰æÞñì€Ø@ñC�"FÛøãÁé#ñaæ �Þæš*@ð�Cô€s �Ûø #ô€iñßæpxCð.FcæÛø�ñ‘¹ñð&�HF“’ÿ÷¬ýš›Õ�B’FØF‚F™¡ë"êâvñÃ€ñÿ;>±ñÿ;@Fÿ÷�ý»ñÿ?÷ÑQFHFÿ÷Âý4DDÝø°æpxCð .F+æÞCô€iñ’€Ú@ñÓ€
+ ñ#ðñÓø ��æ@ñˆ€#ðCð,ç¥ëpFÿ÷˜ý'DïåHÿ÷„ýDÝæHF.FôjOç¿Ä$ô$ð€	AÑ¸ñ0Ð›ƒ±š›+“Ýñÿ9	ñÿ9@Fÿ÷Fý¹ñÿ?÷Ñ›D›+@ðÓ€›+±ºñÐOð	¦æ›ƒ±š›+“Ýñÿ9	ñÿ9@Fÿ÷'ý¹ñÿ?÷Ñ›D0x(?ô¥­Oð	šæ�Ûø ñ+æ›+?ô�®ºñ?ô‹®}æ¸ñ0´ÑpæžëÔšéÔ^çÔ{Õ»ø ñæÛø0ñ`{å
+ Ûø �ñæpxCð.FˆåpxÛø .Fñ�åHFQFÿ÷
+ýñÿ9D>±	ñÿ9@Fÿ÷Õü¹ñÿ?÷Ñ4DÝø°Tå#ô€søævx ñ0¦ñ0	(±Fö¥®0FbF.F]åpxCð.FXå›3“æ›3“æž¹Ô˜·ÔZµÔOð
+*Õ»ù �ñ·å™£ÔZ¡Ô'ÕÛø0ñ€å ßøX�Üæ0 4ÿ÷�üæpxžƒð€vB–.F#å^õg¯›ø ñ’åZõ^¯›ø �ñ‰åXõu¯Ûø0ñpðä!FOð	Îåì$´µƒ°«SøF“ÿ÷Úü°]øë°pG¿þç¿JKšB
ÒÑCD
H!ð1FDSøƒBBøùÑH	IOðˆB¸¿@ø+úÛÿ÷Ç»¿Ä4*Àþç¿þç¿þç¿þç¿þç¿þç¿þç¿þç¿µ ð6ú¹þç ½ñŠA¡õá`pGñŠ@ õáhpG#ABððX¿JB(¸¿0@€ñ`@“@õa@`pG#ABððX¿JB(úó¸¿0J@Bø 0pG€áà#ABððX¿JB(úó¸¿0J@Bø 0pG€âàJhCð`pGíàJhCð`pGíàµ ÿ÷Äÿ ðùûKh`½¿ßDµ ÿ÷¶ÿÿ÷0úÿ÷8ú¨±ÿ÷áúFH¹ÿ÷ëú°¹ÿ÷Dú½è@ ÿ÷�¿ ÿ÷0û½è@ ÿ÷‡¿ ÿ÷¶ú½è@ ÿ÷¿ Fÿ÷,û½è@ ÿ÷w¿¿µ! ÿ÷†ÿ½è@! ð¹»¿µ$ Fÿ÷{ÿ F4ÿ÷‹ÿ4,öÑKöŒ	JhšBÐ½è@ÿ÷º Fÿ÷hÿ Fÿ÷yÿ½è@ÿ÷ý¹¿¼µ# ÿ÷Zÿ½è@# ð�»¿µ$ ÿ÷Pÿ½è@$ ðƒ»¿µ( ÿ÷Fÿ½è@( ðy»¿µ) ÿ÷<ÿ½è@) ðo»¿µ* ÿ÷2ÿ½è@* ðe»¿µ+ ÿ÷(ÿ½è@+ ð[»¿µ, ÿ÷ÿ½è@, ðQ»¿µ- ÿ÷ÿ½è@- ðG»¿µ. ÿ÷
+ÿ½è@. ð=»¿µ/ ÿ÷ÿ½è@/ ð3»¿µ0 ÿ÷öþ½è@0 ð)»¿µ1 ÿ÷ìþ½è@1 ð»¿µ2 ÿ÷âþ½è@2 ð»¿µ3 ÿ÷Øþ½è@3 ð»¿µ4 ÿ÷Îþ½è@4 ð»¿µ5 ÿ÷Äþÿ÷>ùÿ÷Fùˆ±ÿ÷ïù0¹ÿ÷Vù½è@5 ÿ÷¡¾ ÿ÷Bú½è@5 ÿ÷™¾ ÿ÷Èù½è@5 ÿ÷‘¾¿KhhhÛüÔpG¿KhhhÛüÕpG¿KhSø  h#ð`pG¿KhSø  hCð`pG¿KöDKh“BÐKöŒ“BÐpGKJ`pGKJ`pG¿¼�)ˆ&"K`Z`š`Ú`aZapG¿ KöDKh“BÐKöŒ“BÐpG	K	H
+I
+J˜aÙabpGKH	I	J˜aÙabpG¿¼ `)())à)¨)˜)
+Jp´jëAëÁmhTø1›h-hÔÐPf`¥``p¼ pG¿ Kp´Ûi„ˆEyYk˜iÚiÄóÁŒ@Åó@$ê‘@hXh!CÅó€!ê‚@žhÜh
+CÅóÀi"ê @C1±[iÅó�@ ê(Cp¼pG Jy‘ip´Êj
hHhð”@Ãó€$êiMi‚@"CÃóÀŒh"ê¨@ÉhCÃó ê‹@Cp¼pG Kë@jë�Rø0 [h`pG¿ KjëÀChhðpG¿ 
+Kj“è	hhJ@’Ð pGÚh™hhhX@ð¿ pG¿ µDh‰ð¡üÿ÷Yý x˜!¿ðOô€0¿$ÿ÷Uý€ ÿ÷Xý€! Dÿ÷NýKh,Ð½ðSùð£ÿ Fð„ÿ½è@ ð¿¿œ8µ7K7JhFëƒëƒ›|Dh+YÑ(‰ðhüàˆÀó�ðû h.K@³ÀóOðÝú Fÿ÷.ÿF Fÿ÷Xÿ!ÿ÷ÿ!(Fÿ÷ÿðùðùðÍý ðHÿðbÿ#xÛÕKx+³þçFöu ð¹úÚçð¢úKöDKh“BÐKöŒ“BêÑ ÿ÷]ÿ(åÑJ hCð`ÿ÷{þ ÿ÷bþKx+ÙÑ½è8@ ð¿ð›û¢çKh+ßÑÉç¿œþÿ¨¼ áD´8µ"K"JhFëƒëƒ›|Dh‹»(‰ðëû#xÛ(ÕàˆÀó�ð…ú hK@Ó±ÀóOð]ú Fÿ÷®þF Fÿ÷Øþ!ÿ÷�þ!(Fÿ÷‹þðQý ðÌþKx[±þçFöu ðBúãçð+úÓçðFûÊç ½è8@ð¸¾œþÿ¨8µ!K!JhFëƒëƒ›|Dhs»(‰ð�û#xÛ%ÕàˆÀó�ð7ú hK@»±ÀóOðú Fÿ÷`þF Fÿ÷Šþ!ÿ÷Aþ!(Fÿ÷=þðý
Kx[±þçFöu ð÷ùæçðàùÖçðûúÍç ½è8@ðm¾¿œþÿ¨8µKJhFëƒëƒ›|DhS»(‰ðQûàˆÀó�ðîù hK@Ë±ÀóOðÆù Fÿ÷þF Fÿ÷Aþ!ÿ÷øý!(Fÿ÷ôý ð7þ	Kx±þç8½Föu ð¬ùäçð³úÑçœþÿ¨µChØˆÀó�ð¹ù½è@ ð¾8µF lhð ý(‰ð	ûàˆÀó�ð¦ù Fÿ÷×ýF Fÿ÷þ!ÿ÷¸ý(F!ÿ÷´ý#yð+Ð ð„ÿ½è8@ ðí½¿pG¿pµFþ÷Jþ(EÐ(M)L+hëƒëƒÛh+;Ð˜G0Fþ÷ÜþkhxÛÔðDùh‰ð«ú+hëƒëƒ›|C» ðCÿ$ Fÿ÷�û F4ÿ÷­û4,öÑKöŒJhšBÑ Fÿ÷Žû Fÿ÷Ÿûþ÷_ÿðßø ÿ÷pû5 ÿ÷mû½èp@ ð¿þçðGú+hëƒëƒ£|+ÏÑËçœ¼pG¿KöDKµh“B!ÐKöŒ“B!Ðÿ÷»ýF ÿ÷�ý ÿ÷šý ð�ýð“ýð5üðAÿð+ÿ Fþ÷dþð ù½è@ ðo½Kh+ÝÐ ÿ÷¨ü ÿ÷‘üÖç¼´µÿ÷�ýF ÿ÷oý ÿ÷lý ðSýð	üðÿ Fþ÷:þðvù½è@ ðE½¿µÿ÷qýF ÿ÷Sý ÿ÷Pý ð7ýðíû Fþ÷ þ@¿½è@ðY¹¿µÿ÷YýF ÿ÷;ý ÿ÷8ýðÒþð8ý Fþ÷	þðEù½è@ ð½µð=ù½è@ ð½µÿ÷9ýF ÿ÷ý ÿ÷ýðýð°þ Fþ÷éýð%ù ðöü½è@ ð
¼¿KFhAð€q`h›üÔpG$@ßDKFh!ð€q`h›üÕpG$@ßD"µK`Z`ÿ÷Eü½è@ð
¼¿œ
KHhIµJÃó4``hJÃó#`ðHüðþýÿ÷4üðüû½è@ÿ÷¼áD¼´@áD¸J hCô3`pG¿páDJ h#ô3`pG¿páDJhC`pG¿páDOôqKJ`hC`pG¿ßDßDJh#ôs`pGßD8µIKñˆt`d#h+,Ñch+/Ñ#j+2Ñ#i+5Ñci+8Ñ£i+;Ñ£h+>Ñãh+AÑãi+DÑKöŒ9M*hšBGÐ£j+dÑ#k+]Ñãj+MÑKöŒ*hšBPÐ8½! ÿ÷óùch+ÏÐ( ÿ÷íù#j+ÌÐ3 ÿ÷çù#i+ÉÐ- ÿ÷áùci+ÆÐ. ÿ÷Ûù£i+ÃÐ/ ÿ÷Õù£h+ÀÐ* ÿ÷Ïùãh+½Ð, ÿ÷Éùãi+ºÐ2 ÿ÷ÃùKöŒM*hšB·Ñck+´Ð ÿ÷·ùOôqKJ`hC`¨ç0 ÿ÷«ùKöŒ*hšB®Ñ½è8@4 ÿ÷¡¹$ ÿ÷žù�ç# ÿ÷šù–ç¿D¼ßDßD"8µ"K! `ÿ÷�ù( ÿ÷šù) ÿ÷—ù* ÿ÷”ù+ ÿ÷‘ù, ÿ÷Žù- ÿ÷‹ù. ÿ÷ˆù/ ÿ÷…ù0 ÿ÷‚ù1 ÿ÷ù2 ÿ÷|ù3 ÿ÷yù# ÿ÷vù$ ÿ÷sùKöŒM,hœBÐ8½	J h#ôs`ÿ÷dù+h£BóÑ½è8@4 ÿ÷\¹D¼ßDµðÛùð%ùð½ù
Kx±ÿ÷ŠþðŒù ÿ÷Áú ðtú ðqú ðnú ðkú½è@ ðfº˜µ ðzú ðwú ðtú ðqú ðnú ÿ÷�úðIù ð¼üðlù	KxC¹ðùøKöDJhšBÐ½ÿ÷Vþóç½è@ð›¹¿˜¼8µOöÿs˜BÐF ð¿üF ð•üõ ð?ûF
± F8½ ðœü F8½$ F8½¿ÿ÷à¿Kx±æpG¿˜Kx±æpG¿˜KöŒIð´hINMLH	h6hK-h$hh‘B`^`�`Ü`aÑIJ	hhYašað¼pG¿áD¼áDáD@áDDáDHHáDLáDøµÿ÷ËÿKh#¹
Kh;+
ÙJK
O
NMLIH:`2`+`#``ø½
JhCð€S`ëç¿´°ð?‹àÿ@áDDáDáDáDáD‹	 ÿáD8µÿ÷•ÿMKLHIJ+`#```h+Ð+Ð8½Oð`oðbIK``8½%Oðÿ0
JhCô€s`Dø<\Aø@8½¿@áDð?DáDHáDLáD°áDáD`áDKöDKh“BÐKöŒ“BÐpGÿ÷·¿ÿ÷¿¿¼KöDJð´h™BÐKöŒKHh]hLŸh`Þh%`iM‡`.`dhŠBÑšiXiIK``ð¼pGKh+àÑ
Kh;+ÛØIh#ð€S`Õç¿¼HáDáD@áDHáDLáD´°áD !	KF``hAð@`hðAð``h›üÕpG¿áDKh+¿"KJK`pG°áDµ	Kx¹½ ðFû#IJ	h ‹@`½è@ðM»¿™¬”qàDµ	Kx¹½ ð,û#IJ	h ‹@`½è@ð3»¿™¬�qàDKh+ÑJhCðC`pG°áDKh+ÑJh#ðC`pG°áD Jð´h,:Ð#hY7ÐPhÃëÃPø3PëÃ.hJh2C*`Pø3PJi.h2C*`Pø3`�hÍh2h=C*C2`Pø3P
+i.h2C*`Pø3PŽi*h"ê*`Pø3 Íih#ê`KjŠj	jChBüÑTø?ZÈÑð¼pGd#Jðµh.@Ð3hY=Ð¶FUhÃëÃUø4 ëÄhÃiC`j‚jhBüÐUø4 ƒihC`jBjhBüÐUø4i
+h^ø?"ê
+`Uø4pÁh†h:h1C"ê:`Uø4Gi
+h"ê
+`Uø4@h
+h"ê
+`ZÃÑð½¿dKÀëÀZh´ëÁÔjë€ h ðAð!`k˜`h+üÑ]øKpGd
+KÀëÀZhë€›hëÁÐjð)`ÐpGkh+üÐpG¿dKÀëÀ[hëÀCkhÀ²pGd"Kš`Ú`aZašapGdKöDKh“B
+ÐKöŒ“BÐpG	K	I
+JY``pG	JK	IhY`*ñÐJ`pG¿¼d''´p%`%µK„°
ñËéLª#h+´¿ÃóAsÃó�SëƒSø°½¿ü&@áDKöDKh“BÐKöŒ“BÐpGKH	I	JƒèpGKHI	JƒèpG¿¼€d(<(4(Ø(¬(¤(K(hOðSø! h#ð¿CðCð`pG¿€8µF	hJÐFà8¹(Fÿ÷áÿTøK÷Ñ8½8½ ûç¿KhSø 8±hð ñ°ú€ð@	pG€KhSø  h#ðCð`pG¿€KhSø  h#ðCð`pG¿€K Yh»ç€K Yhµç€K ™h¯ç€-éðOOð	FFhJiKÒø€ßø°á³øÀfMgHgI¾øà(ð-ˆ‡°ˆ	ˆ`úŒò£ø�’úŽò’ª²sxø{’‚²’Š²Gê'’ÿ÷%ÿFHFÿ÷áþ-¸¿5/¿;F#­•ûóóëÓrRQñ�€ÿ)@ó�€ÿ!Oô‚r›;ñ�€ÿ+@ó…€ÿ#%OôBOöÿwBH€BM€8+€ øˆ>KAI€€€²x*DÐœFHòkßøø ßøø�ŽFl09Oôzsà;PÐ
ˆíúÔ®øpfxUªø`’²¦©ø 2Fí²ë¬ø°#D®øpøKšB€úÑ5Oôzrtà[Ô:Ðˆ›²ðöÐOöÿrOðÿ0 K€°½èð�®øpr]*ÄÑ ½øPKI€J
€½øPL€½øP%€½ø@€½ø0!ø„<Bø¤Œ°½èð�OöÿrOðÿ0K€°½èð�#€ç!"uç‰²sç›²yç¿°àD¤°àD°°àD´°àD¸°àD(°àD,°àD¬°àD˜°àDhZ5Ðð´F%Jh`¹Wø#@Oöÿr `à:Ð#hÃóC+øÑVø?j\ÐFêçë…
à<¥BÐ(úÑ"hOöÿsWø"`à;ñÐ
+hô@?ùÑ<¥BíÑ ð¼pG pG¿ŒKöDKh“BÐKöŒ“BÐpGKH	I	JƒèpGKHI	JƒèpG¿¼ŒÀ&¨&�&$%%ø$"IOöÿs	hQø 
+`à;Ð
+hô@?ùÑpGŒ#IOöÿr	hQø `à:ÐhÃóC+øÑpG¿ŒKhSø 0hð ñ°ú€ð@	pG¿ŒµK Yhÿ÷\ÿ ½ŒµK Yhÿ÷Rÿ ½ŒµK ™hÿ÷Hÿ ½ŒµK ™hÿ÷>ÿ ½ŒBooted version 0x%x of CM3 PM Firmware. $¤$¬$´$¼$[%08x]%s:   ERR WARN INFO DEBUG0123456789abcdefghijklmnopqrstuvwxyz(null)0x
+	ÿÿÿÿÿÿÿÿLàD(àDÐàDàD¸àDäàDààDÜàDdàD àD`àDàD,àDÿÿÿÿáD€ áDŒàDpàDœàDáD€ áD˜àDHàDTàDáD€ áD”àD4àD@àDˆàD àD,àD�àD\àDhàDàDàD
+	ÿÿÿÿ
ÿÿÿÿ8*ßD �ßD0�ßDh+ßD@+ßD(ŠßD ˆßD@ˆßD¨ˆßD ˆßD ŒßD ƒßDPˆßD8�ßD ”ßDKÀ]¨a�eÿÿÿÿáD€ áDà-ßDä-ßDì-ßDáD€ áD .ßD$.ßD,.ßDáD€ áD -ßD¤-ßD¬-ßD`-ßDd-ßDl-ßD -ßD$-ßD,-ßDÿÿÿÿ
ÿÿÿÿ)ßDƒßD“ßD’ßD�ßD‹ßDˆßDŠßDŒßD�ßD”ßD+ßDÿÿÿÿ

+	ÿÿÿÿàDPàDDàD@àDàDàDàDàDàDHàD,àDàDàDßDßDßDßD	
+
+	@ßD@ßDàDàDàDàD €€@GNUe‚‰â½geÛWÓ…;°¨q2W¸I…¸I…¬ ¥‰¬ ¥‰”ˆ¡ù”ˆ¡ù|=1|=1ÅpÕapÕaXq¡-dY‘€ ƒ ëÔ€üÿêÔƒüßêÔ…üßêÔ€üßêÔ…üßêÔ€üßlog_bufŠ‡ö‡Üá0*PP�%`GP9Î!	Æolz¯…@5	]N
[xSíMêÕNPQçúRPgSPCVPÿXPYPÍZPO[P`\P¦^P)_P0`PzaPßbPecPìePTjP	p
+³qP
+crPHm6nê
rtcoÎ
rawsçvs
+EwW
+4xs
+Cyy
+–zy
+ß}á
+�~s
+Ìs
+£€ò
+M�ù
+¸‚%
+íƒ%
+h„%ìì6áøš‡Preg‡Q��Eï�Preg�®×]ïÙP”œâ4ìPE!QÿÛ½"$Þ9'.;`$,œ4$ìN0‚ ÿ0œ-o "@œO!.P!9Q"0•Pœ~#ÿP˜�$õŸ%d,œ"©�ÄœZ%id«Z¤³¬Pc­Pj®Pq¯P&ÿ�±ÿÑ&ÿ’0¶'&ÿ´H½1'&ÿÄ`¾J'(ò)Pœ*int"½ÏT,œ&"TxÑœ9å.ù&"Z˜ÒÂ9."&"^°Óè97.K#"`ÈÔ9`.t E€œe+QSÿ€ÛB‰"ŒÞ9�.±"€á”œØæáZÄ,ïãPåÿ”åµ"ž
+è9.+"ë¨œKjëZ>,ïíP_ÿ¨ï(}"²
+ò9‘.¥$°ú%¼œ$åÿ%Øœ-A.§7P/X6œ0€²1²~/q)¢/öZ°/Ô%™/Z¬/º%˜/Â%¨.Ç.‰.0.O.x.L.Ö.9.42jjFÀ‡‡àU*`J£intÿØ0aHm3,VÑ·verhnum hT!·Ÿ"ÎhÇ	Ç~hÝ
+Ç�%«&h4'V
+ÇÀ,*Mda+hlen,hT-h
.MV]	ÇÍD1š»2zŸ4š*5Ýà6hª	ÇÍHôlœ‘iH¸
úÐ
ÛæöPt
ñ
 ü
$
(.-PO4AP5
8(>3]P0J>€P3QX$R
+’TæPt­GH`
+œ´
fªv5,÷9]Äˆˆ+àà,²²)½½’}}²²9¨¨:88(®®‘ÃÃ––	
+ é‡ú‡l–·*`ê±±UJáe“€;0¬	·
+‰ž
$×intÃÐæ±	¸l
+œþ
+ÄîrÖPóP
óxœuæ±¸zP
+Ä0~ÖPóP†ádP"�ìP"
Â&�œÓæ&±Q–Ö®PóPœáÂP"¦ìP"
j/¨Xœºi1±r¸ä
+N!
+Ä´êÖP0²÷5PtºáIPtÎÒ
ØìnPOÞì‚P5ä•P;ô÷©PtúáPtïRœv5,€€œqq*88(²²)}}²²9¥¥(91‡‡z2!%œßf‡O‡ø¾H0[g‹œ‹s‹Pc�Èn%écs”		int
+šQ`%(œ×s×'ret
%R
+Ýšbý‡‚‡<†H0[n	~<<œ~c	~‚f\PwRuwint¬~xœÆstrÆ¶	™Æá
+†>ÓQÌ¦~”.œ(strÆ
Ÿ%s	™Æ 
+®>±9?H‘?v?gg¯Ü‡Ø‡Äx“[–íÄlœílvlí¾fmtô‘t¼%øretí	ap‘d
+ø‘ÂP”$QtRóP2$€$"
+œÝP‘\Q‘`§P:
intQúÂ		)0œBlvl)íPÌíT÷íôtt~èŒ€$dœœïïnno‡Q	‡<V[á>*^^�%`1	R——padRžqR—	retT—
+intQ	BÿÿL	BÿnumB^»B—n	B	C3	pEÿ	cEžž—ïZ—<8œ‡
fmtZ‡)
apZ’–L	`«‘´pa‡´‚	a‡chb—nb—&
+numc^}
+»d—+tmpd—ïh	d—£g	e—Ñ
b	fž¬9	g3Îreth—¼i%¶Š	y%	
+*	>	÷J“	j¥‚R ’áÿÖ4ËLÀaµ ‚RìÏõJehAÔ€]uh‹tFPxeòä€“uò‹	FPxe¢	,W€Éu¢	‹°	FPxeà	9™€ÿuà	‹î	FPxe€
+çÖ€5u‹’
+FPx XF!FóP- @F šF FF!ÐQ"Py!	\<PyQz d	\!p	g\Pô$!€
+\vPyQz"FP0�"ž#Â©$	©%&ž»'» ~(œQ—tœ )fmtQ‡‘p*+apS’‘d+retT—PˆP‘PQ‘T&�0'»$s	;AÄ$" ,nn,``,¦¦,¬¬áO
+‡¨	‡”L÷*`š	È”œc§˜Hœ}Á	©}`Ò	©}ÒÙ,	ç	,	È	,	ò	,	þ	,
+Æ¿¿E~
Ú	\¯­­ª"‡
+‡èN 
+èœ^
+ìœL
+ðœ;
+ ôœ�
+&øœ�
+,üœp
+2œ,
+8œCQ‡p‡(¨*`…°°¬
+QÝ
+9í
+[¦Ç
+ø
+	
+ŽÀ
f.Ñ
+$int¯°œà;	P>
+Cœval,Preg°‹º
+ ,$œ;reg °À
™™.5‡Þ‡0˜	80(œfÏfóf$þmSint`²X(œµÏfMófnþmSq&€(œöÏ&f—ó(f¸þ)mSˆ1¨œÖ3mSà;¸œÖ=mS»£‡	
‡ÈFj	*`øÈœ=
RÐ:oP@ÖEP@int('ä^œ^ì:®PO	ðP	ô[	úf	
q	
|
+
‡îPO
’P2
+"
‡PO(
�'P1
+2
‡:PO8
¨NPtB
‡POJCD
œ˜L
:‡P!V
EP![JX
DœiLáb
:ÎPtj
³âPt
‚
|ˆ
:ÿPtŽ
³Pt
–
|l]œ
œW¤
:FP#®
EP#}d°
œ‘¸
:€P$Â
EP$g
kÄ
œËÌ
:ºP(Ö
EP(x
rØ
œà
:ôP)ê
EP)‰
yì
œ?ô
:.P*þ
EP*€œy:hP+EP+‡œ³:¢P,&EP,9Ž(œí0:ÜP-:EP-V
•<œ'D:P.NEP.E
œPœaX:PP/bEP/,
£dœ›l:ŠP0vEP0ÖªxœÕ€:ÄP1ŠEP1£±Œœ”:þP2žEP2´¸ œI¨:8P3²EP3Å¿´œƒ¼:rP4ÆEP4çÆÈFœ/Ð:¬P5	ÔP	Ø[	Þf	ä|
+î‡äP5ô’÷P2
+þ‡P5�P1‡P5v5,²²)ŽŽ00—õõ˜°°™ååš›88(óó€€œÂÂqq*Q‚
‡Ç
‡�š
+ HHÿ
Ý
`§
œqid%P'!$œ“id!%Pš
'8œÂid'%Pval)HSç
1Pœñid1%Pval3HSö
;h8œ	
+Hv5H
4?)·
O))I‡y‡9*`ê¢¢UJáe“€;0¬	·
+‰ž
$×intÀ¹¹~	$
+PÖ$%	©ëë¹	+
+8!%	Ûë¹
+^)'ø$	ÿ¼‡ñ‡ ¨�*`Q0úR,gS,CV,ÿX,Y,ÍZ,O[,`\,¦^,)_,0`,za,ßb,ec,ìe,Tj,C,T§ŽŸ0"ñ•#,ç$,ý%,«&,Ë',¿(,�),ÿ*,’+, #,,$m-,(ñ.,,÷81¦¼2,3,<4,45,L6,`7,,8,®9,�:, ÿ;,$’<,(#=,,m>,0ñ?,4–BË˜C,qD,oüá,º,‡,,.	var,
+‰,
+),Em,S	valm,	vm,Rg,x	valg,	vg,Ìa,�	vala,	va,å[,Â	val[,	v[,Ît,ç	valt,	vt,¤U,	valU,	vU,ÙO,1	valO,	vO,TI,V	valI,	vI,\z,{	valz,	vz,.¤¬¬	pd¤7À¦,t§,int
1( œ
C2¸Xœ‚?,0œval?,.pd?7M€,@\œî4€înv‚,�Â@ „cÝ�ÒSJ8‡¬nc£üJPi"Ñ.zhˆI> ü†p"B3Ê�,œHœL4�îUv�,vVœ€‘qvfŠ
™äœnpd™7Pž,œ–pdž7¯l²¬0œ$à´¬{¶ó‹Ð•ä ÷{.º‹.•S 
+¢58; TúQ<W ñm@s ¦!Ëˆ"ˆ~Â!x #v5,#;#¢W!sÌ$#× Á#²;#W#xý Á|²‡=‡È*`”ffäÄ²¼€int£8"Ï$÷$Y $˜!$í"$Ç#$1$$'%$­'$ „($$ )$(+$,y,$0‰-$4	92
+2~mœOp%"	dd
+2+eOz`%TvC‡Í‡
 @@ÿ
Ý
`^WW~@tˆ&G¢‡ì‡HŽj
á0*`G79µ!	Æolz¯…@5	]N
[xSíMÑÕN7QÎúR7gS7CV7ÿX7Y7ÍZ7O[7`\7¦^7)_70`7za7ßb7ec7ìe7Tj7pï	³q7	cr7
+HmnÑrtcoµrawsÎvZ	Ew>	4xZ	Cy`	–z`
+
ïß}È	�~Z	ÌZ	£€Ù	M�à	¸‚%	íƒ%	h„%ÓÓ

È
ß…cc¬
+QÝ
+9í
+[¦Ç
+ø
+	
+ŽÀ
f.Ñ
+$intêcáUJáe“€;0¬	·
+‰ž
$×C7þ§Ž”c9äÄ²¼€ 7\ÿ
Ý
Ý!H\œ)4!Óâ#)>$7QRV"n-ËP@<$Q˜t8ßP€|-óQ€ŠCŽN”YPtžYP?
µºP¤üœ©4PÓlâR©Õ‰S7óDT7'ØUc:ÄÎdÞoäz¾Ptì…ÒPtò�åQ0ú�þPuQ1þ›C¦Y,P1N&oJP
+uj,±F¼fP1ZÇyP0`ÒŒP0rYŸP?vÝ
Ñ™ œœÂ4™Ó\â›©·‰œ7ÊD�7ó¾ÎdÞoäz/Ptì…CPtò�VQ0ú�oPuQ1þ¦Y‹P1o P
+uj± Ý,YP?KË<˜œÂ4ËÓâÍ©a‰Î7tDÏ7�Zjdzo€zBPtˆ…VPtŽ�iQ0–�‚PuQ1š¦ªo P
+uj°±¶ÝÂYP?kõÔ„œ²	4õÓ°â÷©TDø7ý‰ù7òüdoz@	Pt…T	Pt �g	Q0(�€	PuQ1.Y“	P1@o¨	P
+ujFÝüXœ
+4Ó.â©OfdpYP1ŒpRœó
+4Órâ!©ž‰"7±D#7Ï|èj
+P3‚Œd’z�
+Ptš…¤
+Pt �·
+Q0¨�Ð
+PuQ1¸óã
+P5ÂYP1¤;Äœ4;ÓP ŽAÈ¼œ4hAcâ!iCcÐþð	iPvü*ŽP15¢Pt&@¶Pt<5ÊPtB@ÞPtFKJVPaPOVaP5`**P;fl"$}„œÙˆˆpœ%
àŠc[¢wª‚ˆP1°‚›P0¶�®P?º˜¾£Â®Æ¹ÌÄæPtÐÏÚ�
P1èÚ
P0#îåP0‰®ø6œÌ
à°cyþw‚g
P1‚z
P0��
P?£¹ Ä³
Pt$Ï.�P1èÊ0.œ[àÌc—6w>‚P1D‚!P0J�4P?N£TÄQPt$^Ïä`0œïàæcµfwn‚�P1t‚°P0x¹|ð‚ÄÖPt†Ï��P1,ú�œ–Ï �P1� 6œÅàcÓ¦w®‚`P1´‚sP0¸˜¼¹ÂÄ™PtÆÏÌ�µP1ÖûP3%ÊÐ&%'v57'¸67'X‡(g)'qˆö'Â�%*wwF*¯¯	G*CC	I*º
+º
+	H*íí,*¢¢+*WW)*//@*]]?*N*ÊÊO*‚‚J*88-*ºº0*QQ<*L*ç
ç
*''*''C*~~3*––)*õõ˜*�*ÀÀ=*FFG*¥¥(*²²
+)*qq
+**}}*²²9*88
+(*¯¯D*llQ*

K***ÌÌ,*ZZ1*		+*ïï.*€€œ*vvA*š
š
*§
§
*��-*ÙÙ4ìó‡‡Øàªá0*PP�%`êÎÎUJáe“€;0¬	·
+‰ž
$×int”ÎäÄ²¼€ P3ÿ
Ý
GP9ª!	Æolz¯…@5	]N
[xS	íMÆ
+ÕNP	QÃ
+úRP
+gSP
+CVP
+ÿXP
+YP
+ÍZP
+O[P
+`\P
+¦^P
+)_P
+0`P
+zaP
+ßbP
+ecP
+ìeP
+TjPpä³qPcrP
HmnÆrtcoªrawsÃ	vOEw34xOCyU–zU
+äPŽvarP‰P)P~u¦=
wÎ&�¾=
ƒÎAAØØCÎWOòØQÎ¾ØœËñØðœ,å²;œTÜç¨D$Lœ¦varFP;HòLýPT\QVÎpœøvXPY\vZ ‚l wl lYÀaÎ„œJvcP‚\Še ‚• w© l‚]l˜œ§!ùlÎ¿vnPà\œp ‚ó w làŽ¬œÄš¦Èœá²//‘Ø8œ@!ì‘ÎS"ŽÂ³,#Âšœ$J)@%P!$V)T%P($b)h%P3$n)|%P-$z)�%P.$†)¤%P/$’)¸%P*$ž)Ì%P,$ª)à%P2$Â)ó%P@$Ú)%P0&î)%P4$ô)/%P$'ü)%P#vÎœœÈ(¦€˜éx)˜²¯$4Œ%P!$$4 %P($*4´%P)$04È%P*$64Ü%P+$<4ð%P,$B4%P-$H4%P.$N4,%P/$T4@%P0$Z4T%P1$`4h%P2$f4|%P3$l4�%P#$r4¤%P$$�4·%P@* 4%P4'ó¬Hœœ	"¾º
+û		#º
++ËÄò²?¶JºUÈ`$Îk@	%P1$ÔvS	%P4$Úvf	%P2$àvy	%P1$ævŒ	%P0*ðv%P3,¯ôdœ…
+-Ø(°Û	)°+åD$ü�î	%P3$�
+%P0$�
+%P1$�'
+%P2$�:
+%P4$ŒM
+%P1—$$¢i
+%P1(­2¸NÃ.F1ÎX:œ1/–1UÓ0n311ret4Î
)È2«7%N$jÎ÷
+%P4$r¢
+%P4$zÙ %Pt€€ 'ˆä%P47H¾˜œ`+Ë òØ¨œ‚+å°3è4PD4v6P¼4¸7P´4§8P¸5X‡5ºŽ%611G6ss86××(6ÃÃ'6CCH6ˆˆ96ö
ö
688	(6²²	)6((
+6’’
+6
+6··
+6ç
ç
6~~36ÙÙ46š
š
666
+6¥¥(6ÎÎ
+6
+
+
+6
+6ll*6¡¡6––)‡L‡�*`ê¢¢UJáe“€;0¬	·
+‰ž
$×intÀ¹¹~	$
+iÖÀ&	©ëë¹	+
+w#¨&	Û
+1,�&	ÛnŽ‡Ò‡¸èäá0*PP�%`êÎÎUJáe“€;0¬	·
+‰ž
$×int	"=
+:#=
+¥$=
+è%=
+¸'=
+(=
+F)=
+Å*=[ô/�Zd
var\PD¸dœ$>lœŸvar?PS"DLˆxœØXÀ@ÎXaŽD’z$œLs
+‚$Œœ#var„PS6�°0œHvarŸPt·¶à œÎ¾4œ‘[�P3&fP3Ê44œÉD[¹P3ZfP3(×hœîvarÙP’æ„œvarèP¥±-ÜHv5P¸6Pö‹ÎÔŒ%�Î¥¥(––)ÚD‡º‡ 8;*`”nnäÄ²¼€int£8*Ï,÷,Y ,˜!,í",Ç#,1$,'%,­', „(,$ ),(+,,y,,0‰-,4	a!M
+Ñ!3var#,ºv ˆœœ
ixn¸*²f{6Ì²fAß	SJ¿
+ÑJ3varL,Z(”œ
+
i�nX œ<à„¨l à³ ~‡¼4œ/Ñ‡3¾ Ù‘ð0œTÑ‘3ß ˆš, œŒÑš3!
valœ,!!s¥8œ¯
i§n9!ˆ­LTœÜº, 8œ÷¯¼‘hÖ½n‰!~n÷£)h/upEdK3,`•Plv5,¸6,/’œ�‡K­e¸¢žÈ‡qØ¢|Ü‡ð‡U*`”ffäÄ²¼€int£8"Ï$÷$Y $˜!$í"$Ç#$1$$'%$­'$ „($$ )$(+$,y,$0‰-$4	92
+2~mžO'"	dd
+2+qOz'T0m‡‡§`*íMGÕNQDúRgSCVÿXYÍZO[`\¦^)_0`zaßbecìeTjpe³qcrHm“nG	rtco+	rawsD
+Çe¸
+‰nep
+0e¬
+O-e 
+x@e”
+LQeˆ
+Öae|
+9~ed
+4‡eX‡º‡Ø üá0*PP�%`…ÔÔ¬
+QÝ
+9í
+[¦Ç
+ø
+	
+ŽÀ
f.Ñ
+$int	P

+varP‰P)PV,0
+reg,Ô
var.Pî5S
+reg5Ô
var7P…>Ôyÿ>Ô
+id>W×ØTœS, (œUc¾!nQøcn
6 A6 $ß!Û< 
+1öëß!0F C<F GSÛF :öëqHÔT &œ¹ÿHÔò!idsH¹B"retJÔy"iKÔÆ"j SPu ¿!W"™Q%|  œûidQWæ"varSP##W^œ œt$id^WP
  `6#  $S#Û¦ 1f#öz#ëS##c¸ œí$idcWP0¼ e<Ž#¼ G«#ÛÂ :¾#öÒ#ë«##¢hÔ œ%Ü UP1#Ìmà œ7%è UP2#�rì œ\%ô UP2&³m€ s!P&­¹„&3¹ˆ'v5P(s°)'˜»!¥(¿Ë)'¦Ö!À',æ!À'cö!¥'B!À'Ø!À/9‡ü‡*`…¨¨¬
+QÝ
+9í
+[¦Ç
+ø
+	
+ŽÀ
f.Ñ
+$intÆ¿¿~	$
+cÜd(	¯ññ¿		+
+B!<(	áñ¿
+Ø/-4(	/¬‡‡z*`…¨¨¬
+QÝ
+9í
+[¦Ç
+ø
+	
+ŽÀ
f.Ñ
+$intÆ¿¿~	$
+˜ÜØ(	¯ññ¿
+	+
+¦!¬(	áñ¿
+,0-¤(	‡B‡ÚC::§Ž`Ÿ0"Þ•#:ç$:ý%:«&:Ë':¿(:�):ÿ*:’+: #,:$m-:(ñ.:,÷81“¼2:3:<4:45:L6:`7:,8:®9:�:: ÿ;:$’<:(#=:,m>:0ñ?:4–B¸˜C:qD:²É`)A#ß()Þ	ûô
+ô~“x4)ääœ‡é‡ø Ô:*`”nnäÄ²¼€into,˜val,˜reg,n		1˜»reg1n
+D6	}=nèret?ni@n	¿NnretPniQn
ÛT˜3bÑbn
ÿdn
™en
©fn
àgnsclhn
%in
jn¡�nø Ôœ¸¶�¸æ#len‘¾o$Ñ’˜Ž$e“ÊX
*”˜
�•˜
 –˜
 —˜
˜˜uü ¦'Œ�Ÿ!0œD¯¬$Ÿ!X�a¯Á$Ÿ!xž~¯Ö$Ÿ! Ÿ›¯ë$Ÿ!À ¸¯%R!è«š&%è1?%<G]%Rp%]Ž%h¬%sâ%uš!Š;Œ?&�T&u¨!0‹]Œh&�u®!ŒŒ}&�V!Ñ^!ÜPyuœ!H®ÀŒ’&�§&u !h±æŒ½&�Ò&»´!ˆ²u´!ˆ9Œç&�ü&uÂ! ÀBŒ'�&'uÈ!¸º`Œ�uÌ!Ð½~Œ�ÃÐ!è¶õèÓ<'Þ]'»Ð!IÞuÐ!9Œ©'�Ë'ŸÔ!@C¯uÒ!XÇŒí'�(»"ÃQu"9Œ<(�Q(è"pÉ×pøf(‡( �£!
Ÿ&"U¯Ó(»0"¨^u0"¨9Œè(�
+)uL"ÈÎýŒ,)�A)uN"èÑ#ŒU)�j)uX"ÒIŒ~)�“)u`"(ÓoŒ§)�¼)uj"Ô•ŒÐ)�å)up"ÕŒù)�*"ÅH#¾[$ÜÜ;$ˆˆ6vi!‡P‡p @@ÿ
Ý
`^WW~@·
t�)GÈ!‡}‡Ì"ŒÀá0*`êµµUJáe“€;0¬	·
+‰ž
$×int•9Ý	reg9µ
+i;µ¤/þ	reg/µ
+i1µkC%	regCµ²HµÌ"|œ»
ÿHµ"*idsH»\*iJµ•*¼Þ"NŽÈË*Þ"Óä*Ý#Ré7+#ôQ+Á>ÃH#Tœ¥Wœ#$œ!idW>PÝœ#@Yé¤+@ôÁ+–\À#(œkid\>P¼À#`^È,`Ó1,la%è# œ¬ida>„,þì#c¥,8kµ$œÕ$P0ïsµ$œþ($P2í{µ0$œ'<$P0	‚µD$œPP$P2IaŒg7?»�e»” v57!g¤" P¯™!Á¿" 8Ê´ ^Ú´ iê™ wú´ 1
+´ª#‡Æ‡ÃC::§Ž`Ÿ0"Þ•#:ç$:ý%:«&:Ë':¿(:�):ÿ*:’+: #,:$m-:(ñ.:,÷81“¼2:3:<4:45:L6:`7:,8:®9:�:: ÿ;:$’<:(#=:,m>:0ñ?:4–B¸˜C:qD:Éà)A¢#ß¨)Þ	ûô
+ô~“2˜)ä%:;I$>I:;(I:;:;
:;I
8	:;
+
:;I8:;
:;I

:;II'I'.?:;'I :;I.?:;' :;I4:;I.:;'@—B:;I1XY411XY1:;I‰‚•B1 .1@—B!1".?:;'@—B#1RUXY$.?:;'I@—B%4:;I&1RUXY'1(‰‚•B)Š‚‘B*$>+41,4:;I-4:;I.4:;I?</4:;I?0I1!I/2.?<n:;%U$>$>:;I:;
:;I8
:;I8I	!I/
+!I.?:;'I@—B4:;I
‰‚1‰‚1Š‚‘B‰‚1.?:;'I‡@—B4:;I?<4:;I?.?<n:;%$>I:;((
$>.?:;' :;I	.1@—B
+1‰‚1Š‚‘B
.?:;'@—B:;I1XY‰‚1‰‚•B14:;I‰‚1.?:;'@—B4:;I?<.?<n:;%.?:;' .1@—B%U:;I$>.?:;'I@—B:;I:;I4:;I	$>
+I&I%:;I$>.?:;'I@—B:;I‰‚1Š‚‘B$>	4:;I
+‰‚1I&I
:;I4:;I4:;I?<.?<n%$>.?:;'I@—B:;I:;I4:;I4:;I	4:;I
+‰‚1Š‚‘B‰‚1
$>I&I:;
I84.?:;'@—B4:;II!I/.?<n:;%$>:;II:;(.:;'I :;I:;I	4:;I
+$>I.?:;'I@—B
:;I4:;I4:;I4:;I4:;I
+:;
+:;
+:;1XY141141‰‚1Š‚‘B1XY1RUXYU ‰‚1!‰‚1"&I#:;$
I84%&I'!I/(.?:;'I@—B):;I*+4:;I,.?<n:;%$>.?:;'‡@—B.?:;'@—B4:;I4:;I‰‚•B1I	4:;I?<
+I!I/
4:;I?.?<n:;%.?:;'‡@—B%$>I:;((
$>.?:;'I@—B‰‚1	Š‚‘B
+.?:;'@—B:;I:;I
.?<n:;%.?:;'@—B:;I4:;I4:;I$>$>.?:;'@—B%$>.?:;'@—B4:;I‰‚1Š‚‘B‰‚1$>	‰‚1
+‰‚•B1‰‚•B14:;I
‰‚•B14:;I?<.?<n:;%I:;($>.?:;'@—B:;I4:;I.?:;'@—B	4:;I
+I&I4:;I?<
I!%$>I:;((
$>I!I/	&I
+4:;I?%$>:;
:;I
8I:;(
:;I8.:;'I 	:;I
+:;I4:;I$>
.?:;'@—B.?:;'I@—B:;I:;I4:;I1RUXY111RUXY1XYI.?:;'@—B:;I1XY411414:;I &I!I"!I/#4:;I?<$!%$>I:;((
$>:;
:;I8	I
+!I/&I4:;I?%I:;($>I!I/&I4:;I?%:;I$>I:;(:;
:;I
8:;	
:;I8
+:;
:;I
:;I
I'I'(
$>.?:;'@—B:;I4:;I‰‚1‰‚1Š‚‘B‰‚•B1‰‚•B14:;I.?:;'@—B:;I4:;I:;I .?:;'@–B!4:;I".?:;'@—B#‰‚1$‰‚•B1%4:;I&&I'4:;I?<(I)!*.?<n:;%:;I$>I:;(I:;(
$>	:;
+
:;I
8:;
:;I8
:;
:;I
:;II.:;'I :;I:;I.?:;' 4:;I.?:;' 4:;I.1@—B41.?:;'@—B‰‚1‰‚•B14:;I.?:;'I@—B1XY 1!:;I"1XY#$‰‚1%Š‚‘B&‰‚•B1'‰‚1(1RUXY)U*‰‚•B1+41,.?:;'@—B-1RUXY..?:;'I@—B/:;I04:;I14:;I24:;I34:;I44:;I?54:;I?<6.?<n:;%$>I:;((
$>I!I/	&I
+4:;I?%:;I$>I:;(I:;(
$>	:;
+
:;I8.?:;' .?:;' 
4:;I.1@—B.?:;'@—B4:;I‰‚1.1@—B4141‰‚•B14:;I.?:;'@—B‰‚1Š‚‘B‰‚•B14:;I4:;I?<.?<n:;%$>I:;((
$>:;
:;I8	.:;' 
+:;I4:;I.?:;'@—B
4:;I1XY1411RUXYU:;I.?:;'I@—B.?:;'@—B4:;I4:;II!I/&II4:;I?<!%$>I:;((
$>:;
:;I8	I
+!I/&I4:;I?%$>:;
:;I
8:;
:;I8:;
:;I	
:;I
+4:;I?%:;I$>I:;(I:;(
$>	.:;'I 
+:;I:;I.:;' 
4:;I.?:;'I .?:;'@—B.1@—B11U111XY4141.:;'I@—B:;I:;I4:;I‰‚1Š‚‘B I!&I".?:;'I@—B#.?:;'@—B$:;I%‰‚•B1&4:;I'4:;I?<(I)!%$>I:;((
$>I!I/	&I
+4:;I?%$>I:;((
$>I!I/	&I
+4:;I?%I:;($>:;
:;I84:;I?&I	I
+!I/%$>I:;((
$>.:;' :;I	.:;'I 
+.:;' 4:;I
4:;I:;I.?:;'I@—B:;I4:;I4:;I4:;I1RUXY11U41411XY‰‚1‰‚1Š‚‘B1RUXY1XY U!41"I#&I$.?<n:;%I:;($>I!I/&I4:;I?%:;I$>I:;((
$>.:;' 	:;I
+4:;I.:;'I .:;'I@—B
:;I:;I4:;I1XY1411XYI&I.?:;'@—B.?:;'@—B:;I1RUXYU.?:;'I@—B‰‚1Š‚‘B4:;I 4:;I?<!I"!%I:;($>:;
:;I84:;I?&I	I
+!I/S2Ÿ2ŸSPóPŸ P (óPŸ8>1Ÿ¾ÎSÎÙœÚ<Sx~5Ÿ<L2Ÿ<L	ÿŸLN3ŸLN	ÿŸNT4ŸNT	ÿŸTV5ŸTV	ÿŸhl2Ÿtv2ŸtvS|†P†�óPŸ‚†S†�P|€1Ÿ†ˆ1Ÿ†ˆP�šPš¤óPŸ˜šSš¤P�”6Ÿšœ6ŸšœPTPtŸ`TP
+óPŸP$óPŸPóPŸ$)P):óPŸ<@0Ÿ@JTJMPMNtŸN”Tx€0ŸQ&óQŸRrŸP$S(,P,4S48sŸ(.0Ÿ.0p s"Ÿ08QP V &P&<V<BPBNTNTtŸ@BPBFTFTUTVóPŸX^P^jWjntŸnvTv~tŸ~‚W‚†tŸX`Q`jqŸ~€qŸ\^P^†WPóPŸ.P.lóPŸ VU:VTVlPPU^@FVFU
+ÈUÈÔVÔâvŸò8UQ,QüVvŸV˜ÞY¼ÊV<HYP,>P>@~”ÿŸFP
+~”ÿŸ
+P\|#Ÿ@BPBF|#ŸFHPHP|#ŸPRPRZ|#ŸZ]PbdPd~|#Ÿ~€P€ˆ|#ŸˆŠPŠ’|#Ÿ’”P”œ|#Ÿœ¦P¦®|#Ÿ®¶P¶ÔYØâYâôPôü|#ŸüP	|#ŸP|#ŸP,|#Ÿ,4P4J|#ŸJLPLP|#ŸP^P^n|#ŸnpPpx|#ŸxŒPŒ“|#ŸÞàPàè|#ŸèúPú|#ŸP|#Ÿ$P$'|#Ÿ8LYÊÖ|#Ÿð<|#ŸdtPtx|0Ÿx‚V‚„P„Ž|#Ÿž¤P¤Ö|#ŸÖØPØÞ|#Ÿè,|#Ÿ®¶0Ÿ¶Ì\Øò\¦®R8L\jp0Ÿp„\
+0Ÿ.@ZhnZ
+Z.8ZLÊZÐðZ
+Z$ZŽžZ¶¾ZÞèZZZ,8Z@‘¤Pn@Ÿè:Ÿ.8‘¤LÊ‘¤ÊÌ:ŸÖ
+‘¤$:Ÿdj@ŸŽž‘¤ž¾:ŸÞè‘¤ø‘¤:Ÿ,8‘¤˜œSœÎ‘ ÎÒSÒ@‘ .8‘ LÊ‘ Öè‘ èðSŽ”‘ ”–S–œ‘ œžSÞè‘ ,8‘ @0Ÿ@‘œ
+0Ÿ
+ä‘œü‘œ$@Y@p‘œpxPxð‘œò²‘œ²ÞVÞ.‘œ8d‘œdjSj†‘œ¢¨S¨‘œ<‘œ<dVdÞ‘œèêPêô‘œôöVö8‘œ@R
+R@]RbîRò	R:RJRRn“R“˜‘¤˜¤RÞôR'R8LR$<Rj€R„ŽR¾ÄRÖÞRèøR@ Ÿ
+ Ÿ
+0Ÿ*W,.1Ÿ.8W
+0ŸQT,ZQZ\T\¢^¢ÙQÙÚtŸÚäT
+tŸ
+T<>ty"Ÿ>@T@]Q]bTb	Q	
+tŸ
+T>Q>JTJ€Q€ÞTÞ"Q".T68T8jQ¸¼t‘œ"ŸÊÖQÖèTè
+Q
+T<Q<dTdÀQÀÞTèQ,T@S
+SÈY@]Sb	S@SJhShnYn“S“˜‘¨˜ªSÞîSîYS'S8LSLPYÊÖYð
+Y
+S$Y$<SdŽSŽ¾Y¾ÎSÖÞSèøSøY$SFP~0.ŸP\r0.Ÿ\˜q0.ŸF˜òÖF˜‘¤F\Z\^R^fSŒ�S�˜RF’‘´Ÿ’”S”˜‘´ŸF\‘´Ÿ\^V^jvŸjV.8VLÊVÖðVŽžVÞèV,8Vj‚S,0Y02V28vŸ8<V¶ºVºÀ[ÀÆ{ŸÆÌ[fjSjnYntyŸtzY¤¨S¨¬Y¬²yŸ²¸YJPYPVyŸV\Y S &s|Ÿ&(SQq€€€Ø{Ÿq€ÀðØ{Ÿ P $p€€€Ø{Ÿ$&p€ÀðØ{Ÿ&(óPŸP(óPŸp Ÿ(óP Ÿ(BPBPóPŸ(Bp ŸBPóP ŸPjPjxóPŸPjp ŸjxóP Ÿ�”0Ÿ”žTž¡P¡¢tŸ¢¶TºÊTp˜P˜ qp„Q„ óQŸ ®P®üóPŸ ¦0Ÿ¦®
+p”3&ÿŸ®äu3&ÿŸ¦®p”3&ÿs$Ÿ®äóP#”3&ÿs$Ÿ¦äsäôóP#”	ÿ$3&ÿŸæôQü
+P
+DóPŸü0Ÿüp”ÿŸS`hPhxóPŸxŽ0Ÿ‚ŽQ„†R–˜PP\óPŸT,0	tÿp"Ÿ\vPvžUžÖóPŸÖàUà*óPŸ*-P-0U0XóPŸr$T*XTž P ÖUà$U0XU¤©Ps2!ŸSXpPpžUžÄóPŸÄÔUÔ×P×ÚUÚôóPŸnàTž P ÄUÚàU¤©PôP:U:ZóPŸZjUjmPmpUpŒóPŸ
+vT:<P<ZUpvU@EPŒ¤P¤ÌUÌðóPŸðúUúýPýUÒ×PÌÎPÎðUP(óPŸpóP#(.P.LULzóPŸ0tTLNPNtURWP€‡P‡VóPŸ<VÎÐ0ŸÐÚTÚÝPÝÞtŸÞT\^P^ŒT¸ºPºàTðòPòT "P"BT`bPbˆT
+q@D$!Ÿ
+Q"	qÿÿÿwŸ"0QR^SdjSž¢Sž¢@=$Ÿ²¶S²¶0Ÿ²¶@=$ŸÀÊPÊÔóPŸÄÆSÄÊPÄÊ
+ÿÿŸàâSôøsÿýŸøSPlóPŸlnPnqDq8óPŸöøS®²sÿýŸ²´S€ŽPŽ´óPŸ´¸P¸ºóPŸ€¤0Ÿ¤¬P¬´T´¶0Ÿ¶ºT”´U"S
+QQ¼ÂSØÞS0ŸS $V$,R.0V0HRHJvJLVL`R`budlSlnrˆœ0Ÿœ¬Sª®Q®´SÂÄQÄÊSØR2P2PóPŸPdPd€óPŸ€†P†˜óPŸ�’pÿŸ˜ž0Ÿž 1Ÿ ¢2Ÿ¢¤3Ÿ¤¦4Ÿ¦¬5ŸsHJ$Ÿ"sHC$Ÿ"&ST^P^|óPŸdhS|ŠPŠšUšœóPŸœžUž P ¢óPŸ|‚Q‚ŠTŠžóQŸž¢T|Š0ŸŠŒPŒ’0Ÿ’šPœžPž¢0Ÿ|Š0Ÿž¢0Ÿ¤¬P¬ÄóPŸ°´p3Ÿ´¸P¸¼pŸÄØp2$€"ÎÒSÎÖ1ŸÎÖ3Ÿàôp2$€"êîSêò2Ÿêò3Ÿ P LTLZVZÄTÄtŸRrŸ"RNTtŸŠœtŸœÔTÆÞRPTtZ¬WœÔW>¤Ÿ>D,ŸDN°ŸNR´ŸRZ¸ŸZ¬w
+ÿÿŸœÔw
+ÿÿŸ`bPblUflUv¤UœÔUz”S ªS”–syŸ–¢SœžSª¬S€‚r{Ÿ‚ŽQŽ’r{Ÿ ¢Q¢¤r{Ÿ¦¨Q¨ªr{Ÿ¢°°Ÿ¢°0Ÿ°¶´Ÿ¶º¸ŸºÀ¤ŸºÀ€ŸÀÂ0ŸÀÂ	ÿŸÂÄ(ŸÂÄ	ÿŸ¤Ÿ†Ÿîò0ŸŠ–	ÿŸäæ
+ésŸæè
+èsŸèò
+ésŸŠ”
+èsŸîò(ŸŠ–(Ÿîò	ÿŸŠ–	ÿŸTœŸ$T$@p@Dœ°àDJNp(Ÿ	ÿŸ8D	ÿŸJN0Ÿ&,
+érŸ,.
+èrŸ.8
+érŸJN
+érŸ.2$Ÿ8D(ŸJN(Ÿ8D	ÿŸJN	ÿŸT`¤ŸT`0Ÿ`d°Ÿ`d‘Ldl´Ÿdl‘Hlr¸Ÿlr‘Drx¤Ÿrx‘Tx€,Ÿx€‘PnPnróPŸrtPt|óPŸBQBpuŸpróQŸr|Q0Ÿ2U2BRr|0Ÿs2$w"0Ÿ1Ÿ @<$rŸ "
+ÿÿrŸ",@<$rŸLXt2$w"LX0ŸXZ1ŸZ\@<$sŸ\^
+ÿÿsŸ^l@<$sŸÐàp2$Œ"Ðà0Ÿàâ1Ÿâä@<$sŸäæ
+ÿÿsŸæî@<$sŸôp2$Œ"ô0Ÿ1Ÿ@<$rŸ
+
+ÿÿrŸ
+@<$rŸ&P&<óPŸ&p2$Œ"Ü$Žôl`
+Øl–ü9(<†‚Äx5<V¨”L�è;(‚0˜»ÈFz#�Ï$ü% ¨ÿ-/ù/HŽBØàðN
P¸èS 8]WÝX[Ø -``a“bªdø Ô’klÌ"Œp8:<>xz|~z|~€œž®°¬®²´<@DFJLBDLNFHRTHJTVô``j<DHJ\ ¢¤¦ªÚÜäªÚÜäÚÜäôüþ¨ª¬´PVhnŒ¦ª°œØÜTVXZ^n8<48<>"&>D*,DFLN .0NR "02RTXZZ¤¬²´ºÞäœÔ¢¤¬°°²´¶¤¨º¼¾À¨¬²´ÀÂ¼¾ÂÄÊÐÐÔöúÔØþØÚÜÞäòŠŽ’–ØÚîòŠŽ’–ÜÞèêÚÜ&<@DJN&*.88<@DJNTVZ\^`VZ\^bd`bdhjlhjlrÐÒÔØÚôôöøüþQvû
src/sys_execsrc/includemsg.cmsg.hprcm_core.hpm_state_data.hstddef.hsync.héÓ./µ.“Jâ.KQ†s q  |\œ#j_!J
 =">!P.1 -";O ).W *  r 
 "&//1Yu /JwIäB>.B Ãf½.Ã.“±Ó./µ.ÐJ§Ý.!«.ÚX�ç./¡ éXuwu^û
src/sys_exec/home/a0274052local/toolchains/gcc-linaro-5.3-2016.02-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/libc/usr/includesrc/includesys_init.cstdint.hrsc_table.hprcm_core.hcm3.hmsg.htrace.hsync.hdebug.hô
+ 22!-2j0001=>3>ke.	`Ç'2¿mû
src/sys_execsrc/includesync.cmsg.hcm3.htrace.hprcm_core.hhwmod.hl!/Az /
+ >-@!1>-N$"=#+5k01=CJ<=$.=f@+û
src/sys_exectrace.c!X>û
src/libsrc/includestring.ctypes.hK-11…u<û
src/libsrc/includeputs.ctypes.h<	!!"$!","0z.	Ö "=-[1 "t/-w„Vû
src/libsrc/includedebug.cprintf.hputs.h<built-in>Ä%%%/ sX?Ÿ!"!>?0!ÙØcû
src/libsrc/includeprintf.cputs.hstring.hstddef.h<built-in><Ú
.s .t  =0+�.	tÖaª~Jô  /0= ‚</=0¨~.°gó>ÓJX=LMY",>2!1.=MMM/-03JJ•~t=;ì.¸~.ù ?„.ý ˆ.)&(/!"=K!l<Dx.	 0u. v.,# Yc.#.-0\‚" K-0I$Ð‚>´.K>.C.> "==¾.Ç.>=¶�× 2K3y &-//0�.ä "ó.</"Lò~.Y;�<I!z J�.ò   ¡ ß.0K�‚2=/“<_y (j ç~X\ ±�<</ª~XK;×</N‰.�~XK;ä<0ð~tï Xy�SJ000/IXÇt—.é ŸJF.<g. Ó<ð~J�.ð~ =;’<x x<E<0;!:^ Ä<¼.ª.LjJ000K•.ë ®<00/tÔ<!Ü~J/j.Œ.=X=“.í ²<=‡º<A!2S/û
src/foundationstartup.c”È_.¼,",	 
�
V:û
src/foundationexception_handlers.cè4444444dHû
src/foundationsrc/includertc.cclockdomain.h!]1jYV+û
src/foundationcm3.c0„r"O„0•„0•/0N/0,�û
src/foundationsrc/includeext_intr_handlers.ccm3.hpm_handlers.hmsg.hsync.hprcm_core.hÈ"=A/]!>0CMA2-v<<-s<<-y<D-O!>-O$"=#+3l-*=@-]!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>-O!>4?B2-y<D-u<<-›lû
src/pm_servicessrc/includeldo.cprcm_core.hldo_335x.hldo_43xx.hldo.h>=M>=MY/\Y/\hYH
PJû
src/pm_servicessrc/includehwmod_335x.chwmod.h7�û
src/pm_servicessrc/includepowerdomain.cio.hmsg.hpowerdomain.hprcm_core.hpowerdomain_335x.hpowerdomain_43xx.h (=!!!!\jY/!!!z./!!!	."//-!!/!!#:fu u  !“ ×t© ×J© ótMn k  (Ÿ[Úgfv/-!"V/"XNHû
src/includesrc/pm_servicesdpll.hdpll_335x.cLFû
src/includesrc/pm_servicesldo.hldo_335x.c<Áû
src/pm_servicessrc/includepm_handlers.cmsg.hclockdomain.hhwmod.hpowerdomain.hdpll.hldo.hprcm_core.hrtc.hcm3.htrace.hstddef.hH!!#?0&z !Ah>LZ11	<y.f&z<&S%1>[KNKA?M010>1<UJX0fLZ$">/AN-H<'<<%7%T$#??[KNK??M0>pJxXz< <#+ž%7%T$#??[KNK??M0rJxXz<<#+²%7%T$#>[KNK??L>sXvX¬#i-@ %$0>ZK??LY?-O4 	 K�2">K0>	ta<$ =",4g=?01=@-`J5ä.9#<P>=>>0000>1-g<L= ‚#>=>>00>1-
+J#>=>>0?#-	<#>=>/0>1-C!1-	<#>=>00>0?-â¶û
src/pm_servicessrc/includeprcm_core.cio.hhwmod.hdpll.hldo.hmsg.hpowerdomain.hclockdomain.hcm3.hddr.hi2c.hstddef.hØÀ$">=>$">=á}<!/"0-\"#&/!"!L///0-¿'y @ Ä.#M'y µ Ï.#Mª.Ú<\?#!†1	f!#+#M????????f???Mf>=>=>=>=>=>=>=>=>f=H<?#!Ê<>Z-z<G
Èz &##/=============>žtä œ #á<1@+–!00Ì.¸X0>===>-\!====>>1><.H<0 -t$YK=Y%*@u. [‚PJû
src/pm_servicessrc/includehwmod_43xx.chwmod.hSgû
src/pm_servicessrc/includeddr.cprcm_core.hmsg.hhwmod.hstddef.h¸/y.!'z !"!"z ""!"y !!"!"!!!!"L#1<`$!#!&u.!#!&o.//‚#1/!!"!!!"D>4z.&z &v.!)//"/XhY,^8$<y.=/$$"!">/!"m.KL/0f# p ##!?"/-!#=N?,0”!M>L1-”!M>L1-•L//kL//pû
src/pm_servicessrc/includedpll.cdpll.hprcm_core.hdpll_335x.hdpll_43xx.h ö#¬tu/#/!!#/-!/#/!!#/!/#/!/[6<LN#L‚u/?@/!!?@/" _./#/-!=#/!/#/!/ kI!ge%=[ :">x‡M¢kY/!)/!/	 !![(x !"?0/	NHû
src/includesrc/pm_servicesdpll.hdpll_43xx.cQKû
src/includesrc/pm_servicesmsg.hpm_state_data.c û
src/pm_servicessrc/includeclockdomain.cio.hprcm_core.hclockdomain_335x.hclockdomain_43xx.hstddef.hclockdomain.hØjY/!zJ/! J!%j.h<#t M #X!;M)D[#u?P.h<J2XT._<#J.Xjj\Vû
src/pm_servicessrc/includeclockdomain_43xx.cclockdomain.h\Vû
src/pm_servicessrc/includeclockdomain_335x.cclockdomain.h\Vû
src/includesrc/pm_servicespowerdomain.hpowerdomain_43xx.c2Bû
src/pm_servicessrc/includei2c.cdpll.hø �ž.â. s ˜ è ˜.ð��.Ý £ ð.� )3õX‹<õJ‹.: ><>H"/=>h!>¨J†ú~<•Ó ¼<q. k.Œ.ô~.�.ô~ ˜.è~<™X-è~ ˜ ’f)`.#.X<œ.ä~.«.Õ~<†.ú~<¨X1Õ~<‰.÷~.«.«<)LFû
src/includesrc/pm_servicesldo.hldo_43xx.cÿ€û
src/pm_servicessrc/includehwmod.cprcm_core.hhwmod_335x.hhwmod_43xx.hstddef.hhwmod.hÌ"È93;o h/J¾//` h/J3G‚jY/!zJ/!8JZ' Y '.Y L/)f_" ^ ".^ L/$‚b.</˜"[M"[M![M![\Vû
src/includesrc/pm_servicespowerdomain.hpowerdomain_335x.cCMD_ID_CPUIDLE_V2cmd_datapd_mpu_ram_ret_statemsg_cmd_read_idCMD_ID_DS2_V2CMD_ID_STANDBY_V2a8_reset_handlercmd_handlerssizetypeGNU C11 5.3.1 20160113 -mcpu=cortex-m3 -mthumb -mfloat-abi=hard -mfpu=vfpv3-d16 -mtls-dialect=gnu -g -O2 -fno-delete-null-pointer-checks -fno-strict-overflow -fno-exceptionsCMD_ID_STANDALONEcmd_idspd_mpu_l2_ret_stateparam2param3param4CMD_ID_CPUIDLE/home/a0274052local/git-repos/amx3-cm3m3_firmware_versiondebug_haltpd_mpu_l1_ret_stateboolcmd_stat_valuemsg_cmd_is_validmsg_cmd_dispatcherdeep_sleep_datapd_per_icss_mem_ret_statevdd_mpu_valds0_data_hsCMD_ID_VERSIONinit_m3_state_machinemsg_cmd_stat_updatea8_version_handlersoc_typemsg_cmd_needs_triggerCMD_ID_RTC_FASTds2_datastate_handlerrtc_datasrc/sys_exec/msg.cCMD_ID_RTCCMD_ID_RESETCMD_ID_INVALIDds0_dataidle_datai2c_sleep_offsetreservedCMD_ID_STANDBYCMD_ID_DS0_V2pd_per_ocmc_ret_statefalsei2c_wake_offsetpd_per_stateparam1io_isolationrtc_mode_datartc_timeout_valmsg_cmd_fast_triggermosc_statevtt_gpio_pinshort unsigned inttrue_Boolpd_per_mem_ret_statecmd_idds1_data_hscmd_global_datado_ddrCMD_ID_DS0CMD_ID_DS1CMD_ID_DS2msg_writemsg_readcmd_handlerCMD_ID_DS1_V2m3_param_reseths_datavtt_togglepd_per_ocmc2_ret_statemem_typepd_mpu_statedeep_sleepmsg_cmd_wakeup_reason_updateidle_v2_datacustom_state_dataCMD_ID_COUNTres1res2wakeup_sourceds1_datagp_datastandby_datadebug_printfshort intmainnvic_disable_irqa8_notifyam335_inituint8_tscr_enable_sleeponexitrsc_tablong long intnamesrc/sys_exec/sys_init.ccm3_trace_hdrnvic_enable_irqunsigned charlong long unsigned intuint32_tsoc_idtrace_initscr_enable_sleepdeepfw_rsc_hdrsetup_socpm_resetbasefw_rsc_tracecm3_resource_tablecm3_tracehwmod_ida8_m3_low_power_syncHWMOD_COUNTHWMOD_OTFA_EMIFHWMOD_OCPWPHWMOD_L4FWHWMOD_L3_INSTRHWMOD_EMIFHWMOD_CLKDIV32KHWMOD_GPIO0nvic_clear_irqHWMOD_L3HWMOD_MPUHWMOD_I2C0HWMOD_OCMCRAMHWMOD_L4HSHWMOD_L4LSa8_m3_low_power_fastHWMOD_ENDHWMOD_EMIF_FWtimer_syncsrc/sys_exec/sync.cHWMOD_IEEE5000src/sys_exec/trace.ctrace_set_current_possize_tsrc/lib/string.cstrlenmemsetputchar_logbuf_endsrc/lib/puts.c_logbuf_startmaxlenputsnputslogbuf_posflags__va_listdebug_levelsrc/lib/debug.clevelsvprintfdebug_idxdebug_set_level__apksprintnupperhandle_signput_padstophandle_nosignnbufsrc/lib/printf.cpadcdwidthlenphex2ascii_datapercentreswitchnumberdummy_handlersrc/foundation/startup.cpulsrc_end_textpuldestvector_table_end_stack_start_data_end_datasrc/foundation/exception_handlers.cpendsv_handlerbusfault_handlermemmanage_handlerhardfault_handlerdebugmon_handlersvc_handlerusagefault_handlernmi_handlerCLKDM_L3S_TSCrtc_reg_readCLKDM_L3SCLKDM_COUNTCLKDM_CLK_24MHZCLKDM_EMIFCLKDM_L4FWCLKDM_CPSWCLKDM_LCDCCLKDM_L4HSCLKDM_ENDCLKDM_WKUPCLKDM_DSSrtc_reg_writeCLKDM_MPUCLKDM_ICSSCLKDM_RTCsrc/foundation/rtc.cclkdm_idCLKDM_L4LSclkdm_activeCLKDM_L3rtc_enable_checkCLKDM_OCPWP_L3irq_noscr_regsrc/foundation/cm3.creg_offsetirq_regextint43_handlerextint44_handlerextint31_handlerextint45_handlerextint33_handlerextint34_handlerextint35_handlerextint36_handlergeneric_wake_handlerextint50_handlerextint51_handlerextint52_handlerextint49_handlerextint53_handlerextint16_handlersrc/foundation/ext_intr_handlers.cextint48_handlerreg_valextint47_handlerextint46_handlerextint40_handlerextint41_handlerextint42_handlerldo_power_upldo_wait_for_onam43xx_ldo_regssrc/pm_services/ldo.cLDO_COUNTldo_power_downldo_initLDO_CORELDO_MPUam335x_ldo_regsldo_idldo_wait_for_retam335x_essential_hwmodsam335x_hwmodsam335x_interconnect_hwmodssrc/pm_services/hwmod_335x.cpowerdomain_regsPD_MPUicss_retst_shiftl1_retst_shiftper_powerst_changestctrl_next_valsrc/pm_services/powerdomain.cam335x_pd_regsper_retst_shiftverify_pd_transitionpowerdomain_initmpu_ram_ret_state_changepwrst_maskam43xx_pd_regspwrstst_prev_valstctrlpd_mpu_bitsl2_retst_shiftstctrl_prev_valget_pd_mpu_stctrl_valresultram_retst_shiftpd_per_bitsget_pd_per_stctrl_valam335x_mpu_bitsbit_valpowerdomain_resetpowerdomain_idocmc_mem_ret_state_changeverify_pd_transitionspd_state_changelogicretst_maskam335x_per_bitsam43xx_mpu_bitspd_statesper_mem_ret_state_changeicss_mem_ret_state_changelpstchg_shiftpd_state_restorepd_read_stateicss_retst_maskram1_retst_maskram2_retst_maskmpu_powerst_changepowerdomain_statelpstchg_maskPD_PERram_retst_maskmpu_l2_ret_state_changeper_retst_maskl1_retst_maskmpu_l1_ret_state_changepwrst_shiftl2_retst_maskam43xx_per_bitsvar_modlogicretst_shiftram1_retst_shiftocmc2_mem_ret_state_changeram2_retst_shiftpwrststidlest_regpgoodout_status_bitret_bitponout_status_bitDPLL_COREDPLL_COUNTiso_bitdpll_pwr_sw_ctrl_regDPLL_DDRreset_bitsw_ctrl_dpll_bitclkmode_regDPLL_DISPDPLL_PERponin_bitpgoodin_bitsrc/pm_services/dpll_335x.cisoscan_bitam335x_pg2_power_down_pllsDPLL_ENDclksel_regdpll_idam335x_dpll_regsdpll_pwr_sw_status_regDPLL_MPUsrc/pm_services/ldo_335x.ca8_wake_ds2_handlera8_cpuidle_handlera8_wake_standby_handlerds_saveconfigure_wake_sourcesa8_i2c_wake_handlerplls_power_upwakeup_reasonclear_wake_sourcesper_stclkdms_standby_wakea8_standalone_handlera8_lp_ds0_handlerclkdms_waketempa8_lp_rtc_handleressential_hwmods_enableclkdm_waketimeouta8_lp_ds1_handlera8_wake_cpuidle_handlermpu_sta8_lp_ds2_handlerconfigure_deepsleep_counta8_i2c_sleep_handlera8_cpuidle_v2_handlerclkdms_sleepds_restoreplls_power_downhalt_on_resumea8_wake_ds0_handlerinterconnect_hwmods_disableinterconnect_hwmods_enablea8_wake_rtc_handleressential_hwmods_disabledisable_master_oscillatora8_standby_handlerpll_bypassa8_wake_ds1_handlera8_wake_cpuidle_v2_handlersoc_revenable_master_oscillatorpll_locklocal_cmdsrc/pm_services/pm_handlers.cddr_io_resumeclear_ddr_resetset_ddr_resetvtp_enableprcm_enable_isolationprcm_disable_isolationdmemdpll_resetenable_iodpll_initddr_io_suspendi2c_writewas_enabledvtp_disablehwmod_initvtt_highclockdomain_initcmd_wake_sourcesds_countsrc/pm_services/prcm_core.cvtt_lowdisable_ioam43xx_interconnect_hwmodssrc/pm_services/hwmod_43xx.cam43xx_hwmodsam43xx_essential_hwmodsddr_am437x_io_suspendcmd1_ioctrlio_ctxdata0_ioctrldata3_ioctrlsrc/pm_services/ddr.ccmd2_ioctrlddr_io_save_contextdata1_ioctrlddr_io_contextddr_am335x_io_suspendcmd0_ioctrldata2_ioctrldpll_power_updpll_power_downam43xx_power_down_pllsdpll_get_divpll_modeam43xx_dpll_regsxtal_freqssrc/pm_services/dpll.cdpllindexget_master_xtal_khzsrc/pm_services/dpll_43xx.csrc/pm_services/pm_state_data.cam335x_standby_clkdmsam43xx_sleep_clkdms_clkdm_sleepam43xx_clkdmsclkdms_state_changeclkdm_state_changeam335x_clkdmsam335x_sleep_clkdmssrc/pm_services/clockdomain.cam43xx_standby_clkdms_clkdm_wakeupsrc/pm_services/clockdomain_43xx.csrc/pm_services/clockdomain_335x.csrc/pm_services/powerdomain_43xx.corig_sysci2c_reg_writei2c_wait_for_bborig_irq_enn2_divorig_pscper_clkoutm2sequencei2c_wait_for_ardyspeed_khzstati2c_fclksrc/pm_services/i2c.cxtal_freqi2c_reg_readorig_sclhorig_scllorig_coni2c_program_freqi2c_ack_allsrc/pm_services/ldo_43xx.c_hwmod_is_enabledsrc/pm_services/hwmod.c_hwmod_disable_hwmod_enablehwmods_state_changesrc/pm_services/powerdomain_335x.cGCC: (Linaro GCC 5.3-2016.02) 5.3.1 20160113A6aeabi,Cortex-M3
+M	
+"ÿÿÿÿ|
,0@Pd,$�ÄE„…†‡k
+ÇÆÅÄAT,C„HÄ€”¨¼Øÿÿÿÿ|
ôlA„Ž`
+AƒŽÿÿÿÿ|
Dl
+AƒŽDxAƒŽHÎÃD�AƒŽGÎÃD¨XA„ŽDÿÿÿÿ|
ÌÌÌÌÿÿÿÿ|
(ÿÿÿÿ|
L<<Aƒ„…†‡ŽLxAƒ„…ŽL”.Aƒ„…†‡Žÿÿÿÿ|
D¸ÄlA�‚ƒB„…ŽB D
+BÎÅÄAÃÂÁA\BÄÅÎAÁÂÃ¸0ÿÿÿÿ|
, <8B$„	…†‡ˆ‰Š‹ŽEh|
+$B0 tA€�‚ƒAŽA HBÎAÃÂÁÀÿÿÿÿ|
”””˜Hÿÿÿÿ|
ÄèÄìÄðÄôÄøÄüÄÄÿÿÿÿ|
TAƒŽTT$ÿÿÿÿ|
œ0(œX(œ€(œ¨œ¸ÿÿÿÿ|
üÈAƒŽ0üä^A„ŽS
+ÎÄCE
+ÄÎCE
+ÄÎCEÄÎüD
AƒŽEÎÃ üX
DA„ŽR
+ÎÄBHÄÎüœ
AƒŽEÎÃü°
AƒŽEÎÃüÄ
AƒŽEÎÃüØ
AƒŽEÎÃüì
AƒŽEÎÃüAƒŽEÎÃüAƒŽEÎÃü(AƒŽEÎÃü<AƒŽEÎÃüPAƒŽEÎÃüdAƒŽEÎÃüxAƒŽEÎÃüŒAƒŽEÎÃü AƒŽEÎÃü´AƒŽEÎÃ(üÈFAƒŽO
+ÎÃCE
+ÃÎCEÃÎÿÿÿÿ|
hh$h8hPhh8ÿÿÿÿ|
È È¸XÈ0B„…†QÆÅÄÈ@\B„…†iÆÅÄÈœHD„…†]ÆÅÄÈäÈÈ0ÿÿÿÿ|
ˆH\A„ŽgÎÄ$ˆ¤üAƒ„…Žc
+ÎÅÄÃC ˆ œAƒ„…ŽCÎÅÄÃ ˆ<˜Aƒ„…Ž@ÎÅÄÃˆÔ„Aƒ„…ŽˆXAƒŽHÎÃ ˆpRAƒ„…ŽeÎÅÄÃˆÄ$ˆÈ¼A„…†ŽH
+ÎÆÅÄCˆ„ˆˆpD„Žb
+ÎÄCˆø6A„ŽWÎÄˆ0.A„ŽTÎÄˆ`0A„ŽTÎÄˆ�AƒŽDÎÃˆ 6A„ŽWÎÄÿÿÿÿ|
t
+Øt
+ðt
+BƒŽGÎÃt
+$LE„ŽUÎÄt
+pt
+„t
+˜t
+¬t
+È$t
+Ø8Aƒ„…Ž‡
+ÎÅÄÃC t
+œBƒ„…ŽCÎÅÄÃt
+¬HAƒŽ^ÎÃt
+ôdAƒŽjÎÃt
+X:Aƒ„…Žt
+”t
+˜t
+¨ÿÿÿÿ|
 ü¸dD„…†‡ZÇÆÅÄülAƒ„…†‡ŽüˆxAƒ„…Žü$$ü$ŒD„…†‡]
+ÇÆÅÄAü°0üà ü4AƒŽPÎÃü44AƒŽPÎÃühü„ÿÿÿÿ|
 
 ˆB„…†‡ÇÆÅÄ
(”B„…†‡Ž
¼4E„RÄ
ð0
 
8
LT
 8A„ŽBSÿÿÿÿ|
ì
ØTì
, (ì
T &Aƒ„…Žì
|  ì
œ ì
¸ ì
Ô ì
à ì
ì ÿÿÿÿ|
8˜ø ÔB$„	…†‡ˆ‰Š‹ŽU@Œ
+$B^
+$BG
+$Bÿÿÿÿ|
 äÌ"|D„…†‡tÇÆÅÄäH#Täœ#$äÀ#(äè# ä$AƒŽä$AƒŽä0$AƒŽäD$AƒŽ.symtab.strtab.shstrtab.text.data.resource_table.bss.aux_data.logbuf.debug_info.debug_abbrev.debug_loc.debug_aranges.debug_ranges.debug_line.debug_str.comment.ARM.attributes.debug_frameÄ	
+
ñÿ”ÅÔà¤ñÿ!(,4-<@LP\dˆ� Tp€�”¤¨¸¼ÐØìEWñÿôX`ÄX$bñÿlüTiñÿÜqñÿ,zñÿ<lx�\ŒñÿÄ 08€$”€$T›T”$§È±ñÿ<Ž>€	ˆ	ptÄ$ºÄ$%ì$0ÉñÿèÔÞñÿdäñÿ0|€¤¨´¸Ä¬êñÿÈàä˜
œ
þñÿ $48LPdh�x
ñÿø$ñÿ ´¸ð<@˜œàäüD ( 28;<D@ØLñÿ`%Xñÿˆ&cñÿH ¤„ ,<ÄÔHXx„ðø˜qñÿØ}Ùìðšñ $\p€„”˜¨¬ÀÈÔØ ¬ðôPX¤¨´D¸D„
+Éñÿ�&Öñÿ¸ø\ˆÜ $ˆ°Üàô(4\h|„˜HÜHãñÿ $(¸¼ìð 48HL„ Ðü&dêdúhl,

ñÿ'ñÿX)ñÿØ , P T 7U &˜ œ ´ ¸ Ð Ô Ü à è ì ô €K€R„_ˆü
nñÿ4(�ñÿ¤(”ñÿ)§ñÿø ¨"¨­ñÿ�)¸ñÿÌ"ÀÍ"|D#H#|#œ#¼#À#ä#è#$$$$,$0$@$D$T$ŒÔŒÛ�ì”ôñÿ˜)=<�&6ÉAÅWá c0y•"‰”¨)8¤¥ü¶™HÄ)Ó	Üõdç�Hýu'�)%”.>TK˜)Z`%u$�¡œŸ!¬•"½´Åí Ù±
êlX
•"0.ñ07Y
DHeYù Ôcq)”‹Ù
œ©³É‰xß•"ï‘�•"%Ø(@3•"CõTqnI#TyÄƒ1“)¤œ·Õ„Ê•"Úyß•"ï½4ú'ˆÅ
.•"?1H•"YynU,}ˆp•ñ§•"¸�Ì	Ù‰pí•"ý	$‘.˜;å^LY(]¡8qe,‚4‹•"œÙT­É¾ÊýÖY:êÉFûm
+	•"	½+	á 7	•"H	iV	4*`	…p	Q�	Ù8˜	1$´	•"Å	•Ó	¹Xä	 ð	µ
+p%
+¸
+(
+=80
+%Œ>
+•"N
+()8^
+¸l
+•"}
+�
+•"ž
+¹µ
+QÄ
+$%<Ò
+�(á
+¹ ì
+•"ý
+•"¤($Y7©L•"]9hí
y©–•"§µÉ¼Ê•.Ð54Ø•"éø$9à)0/•"@Qñÿ\¹dp~ù6’y£¨&»a0Ó=äë¼ò�#$ÿa
+
%L

.
	?
QO
©Xe
do
•"€
é# ‘
™œ
E$·
œÇ
- (Ú
ùí
•"ý
±0}   !¬*¡;� G•"X•"i­Hqˆ&�1(‘¡£$²åÃ¨ÎõlÙ4(ïd(@ý¬
+…2
HqR^•r%ƒÀŒíži8§²�
ÃÙØ%ð•"AéI\)Õ 6¡ˆFE
W•"h™~=˜�|™•®¬(,Â™ÜÄDä¡6ÿ`)0Ål)#1.7A\M%Z•"k•"|Ä’£­­…Æ•"Ö<((êÀ&<øÁ#(‘ÄMT#°,•"startup.c$tzero_loop$dmsg.ca8_version_handlera8_reset_handlercustom_state_datasys_init.csync.ctrace.cstring.cputs.clogbuf_posdebug.clevelsdebug_leveldebug_idxprintf.chex2ascii_dataexception_handlers.crtc.ccm3.cext_intr_handlers.cldo.cldo_regshwmod_335x.cpowerdomain.cpd_statesmpu_bitsper_bitspd_regsdpll_335x.cldo_335x.cpm_handlers.cprcm_core.cprcm_enable_isolation.part.0prcm_disable_isolation.part.1cmd_wake_sourceshwmod_43xx.cddr.cio_ctxdpll.cpower_down_pllsdpll_regspll_modedpll_43xx.cpm_state_data.cclockdomain.cclkdms_state_changeclkdmssleep_clkdmsstandby_clkdmsclockdomain_43xx.cclockdomain_335x.cpowerdomain_43xx.ci2c.cldo_43xx.chwmod.chwmods_state_changehwmodsessential_hwmodsinterconnect_hwmodspowerdomain_335x.cputcharam43xx_interconnect_hwmodsdisable_ioa8_standalone_handlervtp_disableverify_pd_transitionsextint8_handlertimer_syncam335x_per_bitsa8_lp_ds0_handlerreset_handleram43xx_pd_regspm_resetds_restoreget_pd_mpu_stctrl_valprintfam43xx_dpll_regsam43xx_ldo_regsds1_data_aux_data_startcmd_handlersam335x_pd_regsam335x_pg2_power_down_pllsessential_hwmods_enablea8_lp_ds1_handlerdpll_get_divextint27_handlersoc_revclkdms_standby_wakeextint36_handlerddr_am335x_io_suspendidle_v2_dataextint26_handlerpd_state_changepll_lockextint34_handlerextint48_handleri2c_writepd_read_stateplls_power_up_start_dataextint41_handlerprcm_disable_isolationtrace_set_current_posddr_am437x_io_suspendextint4_handlera8_m3_low_power_fastextint50_handlerextint0_handleram335x_clkdmsextint7_handlerbusfault_handlerdisable_master_oscillatorhwmod_init_end_datadebug_set_levelextint45_handlerclear_wake_sourcesa8_standby_handlerextint9_handlerputssystick_handlerpll_bypassam43xx_power_down_pllsds1_data_hsextint40_handlerextint37_handlermsg_readextint12_handlera8_m3_low_power_syncm3_param_resettrace_initstandby_datamemmanage_handlerextint30_handlerm3_firmware_versiontrace_updatea8_wake_ds0_handlerextint5_handleressential_hwmods_disablea8_wake_cpuidle_handlerio_isolationextint31_handlernvic_disable_irqget_master_xtal_khzmsg_cmd_is_validvtt_highextint19_handlerclockdomain_initextint16_handler_start_textsvc_handlera8_i2c_wake_handlerextint53_handlera8_notifyextint1_handlermsg_cmd_needs_triggerclkdms_wakeextint15_handlerset_ddr_reset_end_textclear_ddr_resetextint47_handlerconfigure_wake_sourcesinterconnect_hwmods_disableextint18_handlerdummy_handlerpowerdomain_initds0_data_hsextint52_handleram335x_dpll_regssoc_typevector_tablevprintfddr_io_resumeextint6_handleram43xx_per_bitsrtc_mode_dataextint23_handlerldo_wait_for_onextint20_handlerscr_enable_sleeponexitldo_power_downam335x_hwmodsnvic_clear_irqclkdm_wakeextint38_handlerextint22_handleram335x_standby_clkdmsa8_cpuidle_handlerscr_enable_sleepdeepextint39_handlerdpll_resetextint42_handlermsg_cmd_wakeup_reason_updateextint21_handler_logbuf_startgeneric_wake_handlerputsnvtt_lowextint32_handleram335x_interconnect_hwmods_aux_data_endldo_power_upam335x_mpu_bitsextint28_handlerdebugmon_handler_end_stackddr_io_save_contextrtc_reg_writea8_wake_ds1_handlerextint49_handleram43xx_essential_hwmodsa8_wake_standby_handlerextint46_handlermemsetsoc_idhwmod_enablemainsetup_socpendsv_handlerextint43_handlerrtc_enable_checkmsg_cmd_read_idinit_m3_state_machineidle_dataextint25_handlerhwmod_is_enabledvtt_toggleinterconnect_hwmods_enablecmd_global_dataclkdm_state_changeusagefault_handlerextint3_handlervtp_enableclkdm_active_logbuf_endds0_dataextint51_handlerclkdm_sleepextint24_handlerextint10_handlerds_saveam335x_ldo_regsnvic_enable_irqpowerdomain_resetddr_io_suspendpd_state_restoredebug_haltam335_initam43xx_standby_clkdmsam43xx_clkdmsvtt_gpio_pin_end_resource_tablea8_wake_rtc_handlertrace_get_current_posa8_cpuidle_v2_handlermsg_cmd_stat_updateldo_wait_for_ret_end_bsshardfault_handlerldo_init_start_bssextint35_handlermsg_cmd_fast_triggeram335x_essential_hwmodsextint14_handlermsg_writenmi_handlera8_lp_rtc_handlerclkdms_sleepplls_power_downextint33_handlerextint13_handlerprcm_enable_isolationa8_lp_ds2_handlerds2_dataa8_i2c_sleep_handleram335x_sleep_clkdmsconfigure_deepsleep_countrsc_taba8_wake_cpuidle_v2_handleram43xx_mpu_bitsdebug_printfstrlena8_wake_ds2_handlerget_pd_per_stctrl_valrtc_reg_readextint29_handlerextint11_handler_start_resource_tableextint44_handlerenable_ioenable_master_oscillatorextint2_handleram43xx_sleep_clkdmsam43xx_hwmodshwmod_disablemsg_cmd_dispatcherdpll_initmem_typeextint17_handler4*!Ä'ÄÄD7¸<FN3rZ;t'$hb˜Â,s$ÅÐ‚ôÈ€�tÎ#œ0—èé§0€-°p­7Àä¸œÍlp$U	Ü:=
\ No newline at end of file
diff -Naur --no-dereference a/firmware/am43x-evm-scale-data.bin b/firmware/am43x-evm-scale-data.bin
--- a/firmware/am43x-evm-scale-data.bin	1969-12-31 19:00:00.000000000 -0500
+++ b/firmware/am43x-evm-scale-data.bin	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1 @@
+Wd$k$Š$g$†d$k$™$g$†
\ No newline at end of file
diff -Naur --no-dereference a/firmware/regulatory.db b/firmware/regulatory.db
--- a/firmware/regulatory.db	1969-12-31 19:00:00.000000000 -0500
+++ b/firmware/regulatory.db	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,35 @@
+RGDB00eAD‘AEAFAI*AL~AMûANARASÝAT‚AUÄAWAZBA‘BB6BDOBE‚BFBG‚BHþBLBMÝBN'BOHBRBS=BTBYBZ^CAÍCFCH‘CICL'CNšCOCR÷CU¶CX=CY‚CZ‚DE‚DK‚DMÖDOÖDZ3EC¼EE‚EG`ES‚ETFI‚FMÝFR‡GB•GDÙGEGF*GHGL*GP*GR‚GTÖGUÒGY\HKHNHRyHTÝHU‚ID¹IE‚ILìINðIROIS‘IT‚JMJO0JPçKE-KHKN#KPáKR­KWKY=KZrLBLC#LI‘LK÷LSLT‚LU‚LV‚MAMC~MD~ME~MF*MHÝMK‘MN=MOQMPÝMQ*MRMT‚MU=MVvMWMXMY9NGENIÝNL‚NOŒNP'NZUOMPAÉPEPF*PGPHPKKPL‚PM*PRÙPT‚PWÝPY=QA©RE*RO‚RS‘RUžRWSASE‚SG²SI‚SK‚SNSRSVôSYåTCATDTGTHTNTR¡TTTWÀTZMUA¥UG=USkUY6UZVCVEYVIÝVNVUWF*WSYEåYT*ZA ZW#4JJ#4FJÐ…8)Ð¸
Ãp
Ë@Ð¸
Ë@	À>€¸	À)@¸$Ÿ%¸@œ@Ð$Ÿ%å,œ@Ð$Ÿ%å,œ@ü$Ÿ%å,œ@ý$Ÿ%å,œ@
+Š$Ÿ%å,œ@¸$Ÿ%å,œ@$Ÿ%å,œ@Ð$¦Ð%¸@œ@¸$¦Ð%¸@œ@Ð$¦Ð%ßPN Ð$¦Ð%ßPœ@ü$¦Ð%ßPœ@¸$¦Ð%ßPœ@Ð$¦Ð%å,œ@Ð%}¨%ßPN Ð%À&0N 	Ð%À&0N üJë°L$0œ@üN•0OÍ°œ@¢N•0PÐ8€ÐN•0PÐ8€±üN•0PÐ8€üN•0PÐ8€üN•0PÐ8€±ýN•0PÐ8€ýN•0PÐ8€±ýN•0PÐ8€ýN•0PÐ8€±¸N•0PÐ8€N•0PÐ8€ÐN•0Q¢p8€ýN•0Q¢p8€
+ýN•0Q¢p8€ÐN•0Q¢pq¤NãPPÐN NãPPÐN ÐNãPPÐN ¤NãPPÐœ@ÐNãPPÐœ@¤NãPPÐ8€¤NãPPÐ8€NãPPÐ8€ÐNãPPÐ8€ÐNãPPÐ8€±ÐNãPPÐ8€üNãPPÐ8€üNãPPÐ8€üNãPPÐ8€	`NãPPÐ8€	`NãPPÐ8€±¤OÍ°PÐN PÐQTPN ÐPÐQTPN üPÐQTPN 	`PÐQTPN ÐPÐQTPœ@	`PÐQTPœ@PÐQTP8€ÐPÐQTP8€ÐPÐQTP8€±ÐPÐQTP8€ÐPÐQTP8€±ÐPÐQTP8€üPÐQTP8€	`PÐQTP8€	`PÐQTP8€	`PÐQTP8€±¸PÐQTP8€ÐPÐQ¢p8€ÐPÐQ¢p8€ÐPÐQ¢p8€±0PÐQ¢p8€üPÐQ¢p8€ýPÐQ¢p8€±ýPÐQ¢p8€	`PÐQ¢p8€	`PÐQ¢p8€¸PÐQ¢p8€	`Sw0Us8€
+ŒSw0Us8€	]Sw0W[H8€ÐSw0W[HqÐSw0W[HqÐSw0W[Hq±0Sw0W[Hq	`Sw0W[Hq
+ŠSw0W[Hq±
+ŠSw0W[Hq±
+ŒSw0W[Hq¸Sw0W[HqüSw0WnÐq	`Sw0WnÐq
+ŠSw0WnÐq±¸SÅPTýÐ8€¸SÅPUè0N 	`SÅPV6PqüSÅPV„pq
+ŒSÅPW °œ@üSÅPW °q	`SÅPW °q
+ŒSÅPW °q
+ŒSÅPW °q±¸SÅPW °q¸SÅPW °q	`SÅPWnÐN 	`SÅPWnÐœ@	`SÅPWnÐ8€ÐSÅPWnÐq	`SÅPWnÐq	`SÅPWnÐq±¸SÅPWnÐq	`V6PWnÐ8€
+ŒV6PWnÐ8€ÐV6PYC�qýW[HXáè8€ÐW[HYC�8€ÐW[HYC�8€üW[HYC�8€ýW[HYC�8€ýW[HYC�8€¸W[HYC�8€äW[HYC�8€W[HYC�8€uW[HY¥88€ÐW[HY¥88€ýW[HY¥88€¸W[HY¥88€¸WnÐYC�8€WnÐYC�8€üW‚XX˜œ@¸W‚XXºØN ¸W‚XXºØ8€ÐW‚XYøN ¸W‚XYøN ¸W‚XYøœ@ÐW‚XYø8€ÐW‚XYø8€üW‚XYø8€	`W‚XYø8€¸W‚XYø8€
+ŒYC�YóXœ@	]Zhˆb	¨q±	`Zhˆb	¨qÜZhˆl¸q°Zhˆl¸â
+°Zhˆl¸âüZ¶¨b	¨q±ýZ¶¨b	¨q±ÌeÀ@Ð� õ€èeÀ@ï€ õ€BeÀ@ï€ õ€ eÀ@ï€ õ€ eÀ@ï€ õ€ÌeÀ@ï€ õ€ÌeÀ@ï€ õ€ eÀ@;_À õ€
+ðiiÀŠ_@ õ€iiÀÌJ@ õ€ iiÀ;_À õ€0Š_@ÌJ@ õ€
+ðÌJ@í?À õ€	¹é
‚Í‰þU½ÁÅÉ"GÚ#YÍ&ê ®=Í/æªÍ3û1Ê'=Í<î1ÊÍ<î1Ê'=Í<î1Ê'MÍ<î1Ê,MÍ<î1Ê=Í<îKºMÍIÂQ]aÍU¢AÍŽÄ;=Ñî$®9Ñ8 ÎAÕ›æ²EÕ"æ;¾=ÙQ¶ÝM¦áó)¾á"÷C¾=å&êžÞIåE?Æ1í&š
+íY«}òíqÑ
+íqÙ�
+í’Ù�
+ña£Tæõõ	y»d5õ86ÒõA-ÖõY§òõY«}òõ]Ÿõa£îõe³�öõi¯`õmÕ…
+õqÙh
+õqÙ�
+õu·õu·=õy»õy»lõy»uõy»yêõy»úõ}¿põ†Pâõ†õŠÑ\õŠÑ
+õ’ÙXõ’Ù�
+õ–Ý‘
+õâ
+õâ
+õÖõ
+õ
+ùŠÑ–
+ýqÙ�
+ýŠÑ
+ý
+ý
+*È
\ No newline at end of file
diff -Naur --no-dereference a/firmware/regulatory.db.p7s b/firmware/regulatory.db.p7s
--- a/firmware/regulatory.db.p7s	1969-12-31 19:00:00.000000000 -0500
+++ b/firmware/regulatory.db.p7s	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,6 @@
+0‚š	*†H†÷
 ‚‹0‚‡10
	`†He0	*†H†÷
 ‚¨0‚¤0‚Œ	²�ßG®ùÎ§0
	*†H†÷
010Usforshee0 
171006194035Z21170912194035Z010Usforshee0‚"0
	*†H†÷
‚0‚
+‚µ@ãœ(„9ò9×f,A8¬~¥ƒq%~�|hÝo?Ù×Y8Ÿ|jRÂ*-~fô³p [Ô—2=q‹;kaÄW‹–ý$Õ	ùh„ûÊQÑEÚDŠÙþv©ý`-(•²-êˆ˜¸ÑV!ðSñoéF›“_(�¬6úh#qWVöÌÓß}*ÙsEëº'…ïz¥Ë€Ç06ÒSîì¬ç1ñ6¢œcÆe[%uh¡êÓ~\š^Ø 2w)f6sç—A7±±r+ô¡) |–y+ÐØÞÈl?“ûÅîxRzöâh™çûF„ãÇ¡æàÒFÕáÄ_ fôÚÄÿ•0
	*†H†÷
‚‡Úò‚ÂÝ¯|D/†Ó_L“H¹þ»!÷%#Nª"¹s®�F|uÙÃIWG¿3·—ìõ@uÀF"ð ]œy¡ÿ¸£/{Ž?È¶äj(ò4\#?2Àæ­¬ÏUtGsÓ…·"V$}Ÿ	©†ž7[œmÙŒÈPjâYóê²BµXþºÑ�Wï²8ˆXöªÄ.‹Z'ä¥è¤Êg\¬rgÃoÃ-5y×ŠçõÔ!0JÕö£ÙyVò÷}ÐQ“/Gø}K
+„U
+}N;+/ü(³i4á€€»â¯¹Ö0ñT‡#™ŸQLE}es«ýÏ”Ì
:`ý</3©!ËP±�î f©y1‚¶0‚²0 010Usforshee	²�ßG®ùÎ§0
	`†He i0	*†H†÷
	1	*†H†÷
0	*†H†÷
	1
220606144331Z0/	*†H†÷
	1" 1±Ië)˜/Rt]êì›Üª»’“ºðÅ‹ûï}
+w0
	*†H†÷
‚A‹|…#ãèÈçÍ¥á{ÂXàÝÝ;z¢1†óºmGJ„ÒRH�™hè1êç
+¼˜þêðÌÏDCÿ€—âpZ‹-jZ7Ðç%³Ÿ&�ð9ÊY­0ªüíRÁ³,SKÜCMÂ ÍCŽ°"€Ïè€.÷›�áäŒâ±ù�Ç×�¬‰/å$*œžá%ã§pdÊ~*RÏñ˜„,±ÝÊÚ¶éÀgv*'êin/98‡¨,™¿ÌM1x�o¾`¨ùp�è‰Urã$0W	×gØ�ŽÁµ~¢TÑ>ãVdøk�|jûyÉ—À�Ó•½“£«Ìaé.Ï5†Rù­~
\ No newline at end of file
diff -Naur --no-dereference a/fs/aufs/aufs.h b/fs/aufs/aufs.h
--- a/fs/aufs/aufs.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/aufs.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * all header files
+ */
+
+#ifndef __AUFS_H__
+#define __AUFS_H__
+
+#ifdef __KERNEL__
+
+#define AuStub(type, name, body, ...) \
+	static inline type name(__VA_ARGS__) { body; }
+
+#define AuStubVoid(name, ...) \
+	AuStub(void, name, , __VA_ARGS__)
+#define AuStubInt0(name, ...) \
+	AuStub(int, name, return 0, __VA_ARGS__)
+
+#include "debug.h"
+
+#include "branch.h"
+#include "cpup.h"
+#include "dcsub.h"
+#include "dbgaufs.h"
+#include "dentry.h"
+#include "dir.h"
+#include "dirren.h"
+#include "dynop.h"
+#include "file.h"
+#include "fstype.h"
+#include "hbl.h"
+#include "inode.h"
+#include "lcnt.h"
+#include "loop.h"
+#include "module.h"
+#include "opts.h"
+#include "rwsem.h"
+#include "super.h"
+#include "sysaufs.h"
+#include "vfsub.h"
+#include "whout.h"
+#include "wkq.h"
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_H__ */
diff -Naur --no-dereference a/fs/aufs/branch.c b/fs/aufs/branch.c
--- a/fs/aufs/branch.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/branch.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1427 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * branch management
+ */
+
+#include <linux/compat.h>
+#include <linux/statfs.h>
+#include "aufs.h"
+
+/*
+ * free a single branch
+ */
+static void au_br_do_free(struct au_branch *br)
+{
+	int i;
+	struct au_wbr *wbr;
+	struct au_dykey **key;
+
+	au_hnotify_fin_br(br);
+	/* always, regardless the mount option */
+	au_dr_hino_free(&br->br_dirren);
+	au_xino_put(br);
+
+	AuLCntZero(au_lcnt_read(&br->br_nfiles, /*do_rev*/0));
+	au_lcnt_fin(&br->br_nfiles, /*do_sync*/0);
+	AuLCntZero(au_lcnt_read(&br->br_count, /*do_rev*/0));
+	au_lcnt_fin(&br->br_count, /*do_sync*/0);
+
+	wbr = br->br_wbr;
+	if (wbr) {
+		for (i = 0; i < AuBrWh_Last; i++)
+			dput(wbr->wbr_wh[i]);
+		AuDebugOn(atomic_read(&wbr->wbr_wh_running));
+		AuRwDestroy(&wbr->wbr_wh_rwsem);
+	}
+
+	if (br->br_fhsm) {
+		au_br_fhsm_fin(br->br_fhsm);
+		au_kfree_try_rcu(br->br_fhsm);
+	}
+
+	key = br->br_dykey;
+	for (i = 0; i < AuBrDynOp; i++, key++)
+		if (*key)
+			au_dy_put(*key);
+		else
+			break;
+
+	/* recursive lock, s_umount of branch's */
+	/* synchronize_rcu(); */ /* why? */
+	lockdep_off();
+	path_put(&br->br_path);
+	lockdep_on();
+	au_kfree_rcu(wbr);
+	au_lcnt_wait_for_fin(&br->br_nfiles);
+	au_lcnt_wait_for_fin(&br->br_count);
+	/* I don't know why, but percpu_refcount requires this */
+	/* synchronize_rcu(); */
+	au_kfree_rcu(br);
+}
+
+/*
+ * frees all branches
+ */
+void au_br_free(struct au_sbinfo *sbinfo)
+{
+	aufs_bindex_t bmax;
+	struct au_branch **br;
+
+	AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+	bmax = sbinfo->si_bbot + 1;
+	br = sbinfo->si_branch;
+	while (bmax--)
+		au_br_do_free(*br++);
+}
+
+/*
+ * find the index of a branch which is specified by @br_id.
+ */
+int au_br_index(struct super_block *sb, aufs_bindex_t br_id)
+{
+	aufs_bindex_t bindex, bbot;
+
+	bbot = au_sbbot(sb);
+	for (bindex = 0; bindex <= bbot; bindex++)
+		if (au_sbr_id(sb, bindex) == br_id)
+			return bindex;
+	return -1;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * add a branch
+ */
+
+static int test_overlap(struct super_block *sb, struct dentry *h_adding,
+			struct dentry *h_root)
+{
+	if (unlikely(h_adding == h_root
+		     || au_test_loopback_overlap(sb, h_adding)))
+		return 1;
+	if (h_adding->d_sb != h_root->d_sb)
+		return 0;
+	return au_test_subdir(h_adding, h_root)
+		|| au_test_subdir(h_root, h_adding);
+}
+
+/*
+ * returns a newly allocated branch. @new_nbranch is a number of branches
+ * after adding a branch.
+ */
+static struct au_branch *au_br_alloc(struct super_block *sb, int new_nbranch,
+				     int perm)
+{
+	struct au_branch *add_branch;
+	struct dentry *root;
+	struct inode *inode;
+	int err;
+
+	err = -ENOMEM;
+	add_branch = kzalloc(sizeof(*add_branch), GFP_NOFS);
+	if (unlikely(!add_branch))
+		goto out;
+	add_branch->br_xino = au_xino_alloc(/*nfile*/1);
+	if (unlikely(!add_branch->br_xino))
+		goto out_br;
+	err = au_hnotify_init_br(add_branch, perm);
+	if (unlikely(err))
+		goto out_xino;
+
+	if (au_br_writable(perm)) {
+		/* may be freed separately at changing the branch permission */
+		add_branch->br_wbr = kzalloc(sizeof(*add_branch->br_wbr),
+					     GFP_NOFS);
+		if (unlikely(!add_branch->br_wbr))
+			goto out_hnotify;
+	}
+
+	if (au_br_fhsm(perm)) {
+		err = au_fhsm_br_alloc(add_branch);
+		if (unlikely(err))
+			goto out_wbr;
+	}
+
+	root = sb->s_root;
+	err = au_sbr_realloc(au_sbi(sb), new_nbranch, /*may_shrink*/0);
+	if (!err)
+		err = au_di_realloc(au_di(root), new_nbranch, /*may_shrink*/0);
+	if (!err) {
+		inode = d_inode(root);
+		err = au_hinode_realloc(au_ii(inode), new_nbranch,
+					/*may_shrink*/0);
+	}
+	if (!err)
+		return add_branch; /* success */
+
+out_wbr:
+	au_kfree_rcu(add_branch->br_wbr);
+out_hnotify:
+	au_hnotify_fin_br(add_branch);
+out_xino:
+	au_xino_put(add_branch);
+out_br:
+	au_kfree_rcu(add_branch);
+out:
+	return ERR_PTR(err);
+}
+
+/*
+ * test if the branch permission is legal or not.
+ */
+static int test_br(struct inode *inode, int brperm, char *path)
+{
+	int err;
+
+	err = (au_br_writable(brperm) && IS_RDONLY(inode));
+	if (!err)
+		goto out;
+
+	err = -EINVAL;
+	pr_err("write permission for readonly mount or inode, %s\n", path);
+
+out:
+	return err;
+}
+
+/*
+ * returns:
+ * 0: success, the caller will add it
+ * plus: success, it is already unified, the caller should ignore it
+ * minus: error
+ */
+static int test_add(struct super_block *sb, struct au_opt_add *add, int remount)
+{
+	int err;
+	aufs_bindex_t bbot, bindex;
+	struct dentry *root, *h_dentry;
+	struct inode *inode, *h_inode;
+
+	root = sb->s_root;
+	bbot = au_sbbot(sb);
+	if (unlikely(bbot >= 0
+		     && au_find_dbindex(root, add->path.dentry) >= 0)) {
+		err = 1;
+		if (!remount) {
+			err = -EINVAL;
+			pr_err("%s duplicated\n", add->pathname);
+		}
+		goto out;
+	}
+
+	err = -ENOSPC; /* -E2BIG; */
+	if (unlikely(AUFS_BRANCH_MAX <= add->bindex
+		     || AUFS_BRANCH_MAX - 1 <= bbot)) {
+		pr_err("number of branches exceeded %s\n", add->pathname);
+		goto out;
+	}
+
+	err = -EDOM;
+	if (unlikely(add->bindex < 0 || bbot + 1 < add->bindex)) {
+		pr_err("bad index %d\n", add->bindex);
+		goto out;
+	}
+
+	inode = d_inode(add->path.dentry);
+	err = -ENOENT;
+	if (unlikely(!inode->i_nlink)) {
+		pr_err("no existence %s\n", add->pathname);
+		goto out;
+	}
+
+	err = -EINVAL;
+	if (unlikely(inode->i_sb == sb)) {
+		pr_err("%s must be outside\n", add->pathname);
+		goto out;
+	}
+
+	if (unlikely(au_test_fs_unsuppoted(inode->i_sb))) {
+		pr_err("unsupported filesystem, %s (%s)\n",
+		       add->pathname, au_sbtype(inode->i_sb));
+		goto out;
+	}
+
+	if (unlikely(inode->i_sb->s_stack_depth)) {
+		pr_err("already stacked, %s (%s)\n",
+		       add->pathname, au_sbtype(inode->i_sb));
+		goto out;
+	}
+
+	err = test_br(d_inode(add->path.dentry), add->perm, add->pathname);
+	if (unlikely(err))
+		goto out;
+
+	if (bbot < 0)
+		return 0; /* success */
+
+	err = -EINVAL;
+	for (bindex = 0; bindex <= bbot; bindex++)
+		if (unlikely(test_overlap(sb, add->path.dentry,
+					  au_h_dptr(root, bindex)))) {
+			pr_err("%s is overlapped\n", add->pathname);
+			goto out;
+		}
+
+	err = 0;
+	if (au_opt_test(au_mntflags(sb), WARN_PERM)) {
+		h_dentry = au_h_dptr(root, 0);
+		h_inode = d_inode(h_dentry);
+		if ((h_inode->i_mode & S_IALLUGO) != (inode->i_mode & S_IALLUGO)
+		    || !uid_eq(h_inode->i_uid, inode->i_uid)
+		    || !gid_eq(h_inode->i_gid, inode->i_gid))
+			pr_warn("uid/gid/perm %s %u/%u/0%o, %u/%u/0%o\n",
+				add->pathname,
+				i_uid_read(inode), i_gid_read(inode),
+				(inode->i_mode & S_IALLUGO),
+				i_uid_read(h_inode), i_gid_read(h_inode),
+				(h_inode->i_mode & S_IALLUGO));
+	}
+
+out:
+	return err;
+}
+
+/*
+ * initialize or clean the whiteouts for an adding branch
+ */
+static int au_br_init_wh(struct super_block *sb, struct au_branch *br,
+			 int new_perm)
+{
+	int err, old_perm;
+	aufs_bindex_t bindex;
+	struct inode *h_inode;
+	struct au_wbr *wbr;
+	struct au_hinode *hdir;
+	struct dentry *h_dentry;
+
+	err = vfsub_mnt_want_write(au_br_mnt(br));
+	if (unlikely(err))
+		goto out;
+
+	wbr = br->br_wbr;
+	old_perm = br->br_perm;
+	br->br_perm = new_perm;
+	hdir = NULL;
+	h_inode = NULL;
+	bindex = au_br_index(sb, br->br_id);
+	if (0 <= bindex) {
+		hdir = au_hi(d_inode(sb->s_root), bindex);
+		au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+	} else {
+		h_dentry = au_br_dentry(br);
+		h_inode = d_inode(h_dentry);
+		inode_lock_nested(h_inode, AuLsc_I_PARENT);
+	}
+	if (!wbr)
+		err = au_wh_init(br, sb);
+	else {
+		wbr_wh_write_lock(wbr);
+		err = au_wh_init(br, sb);
+		wbr_wh_write_unlock(wbr);
+	}
+	if (hdir)
+		au_hn_inode_unlock(hdir);
+	else
+		inode_unlock(h_inode);
+	vfsub_mnt_drop_write(au_br_mnt(br));
+	br->br_perm = old_perm;
+
+	if (!err && wbr && !au_br_writable(new_perm)) {
+		au_kfree_rcu(wbr);
+		br->br_wbr = NULL;
+	}
+
+out:
+	return err;
+}
+
+static int au_wbr_init(struct au_branch *br, struct super_block *sb,
+		       int perm)
+{
+	int err;
+	struct kstatfs kst;
+	struct au_wbr *wbr;
+
+	wbr = br->br_wbr;
+	au_rw_init(&wbr->wbr_wh_rwsem);
+	atomic_set(&wbr->wbr_wh_running, 0);
+
+	/*
+	 * a limit for rmdir/rename a dir
+	 * cf. AUFS_MAX_NAMELEN in include/uapi/linux/aufs_type.h
+	 */
+	err = vfs_statfs(&br->br_path, &kst);
+	if (unlikely(err))
+		goto out;
+	err = -EINVAL;
+	if (kst.f_namelen >= NAME_MAX)
+		err = au_br_init_wh(sb, br, perm);
+	else
+		pr_err("%pd(%s), unsupported namelen %ld\n",
+		       au_br_dentry(br),
+		       au_sbtype(au_br_dentry(br)->d_sb), kst.f_namelen);
+
+out:
+	return err;
+}
+
+/* initialize a new branch */
+static int au_br_init(struct au_branch *br, struct super_block *sb,
+		      struct au_opt_add *add)
+{
+	int err;
+	struct au_branch *brbase;
+	struct file *xf;
+	struct inode *h_inode;
+
+	err = 0;
+	br->br_perm = add->perm;
+	br->br_path = add->path; /* set first, path_get() later */
+	spin_lock_init(&br->br_dykey_lock);
+	au_lcnt_init(&br->br_nfiles, /*release*/NULL);
+	au_lcnt_init(&br->br_count, /*release*/NULL);
+	br->br_id = au_new_br_id(sb);
+	AuDebugOn(br->br_id < 0);
+
+	/* always, regardless the given option */
+	err = au_dr_br_init(sb, br, &add->path);
+	if (unlikely(err))
+		goto out_err;
+
+	if (au_br_writable(add->perm)) {
+		err = au_wbr_init(br, sb, add->perm);
+		if (unlikely(err))
+			goto out_err;
+	}
+
+	if (au_opt_test(au_mntflags(sb), XINO)) {
+		brbase = au_sbr(sb, 0);
+		xf = au_xino_file(brbase->br_xino, /*idx*/-1);
+		AuDebugOn(!xf);
+		h_inode = d_inode(add->path.dentry);
+		err = au_xino_init_br(sb, br, h_inode->i_ino, &xf->f_path);
+		if (unlikely(err)) {
+			AuDebugOn(au_xino_file(br->br_xino, /*idx*/-1));
+			goto out_err;
+		}
+	}
+
+	sysaufs_br_init(br);
+	path_get(&br->br_path);
+	goto out; /* success */
+
+out_err:
+	memset(&br->br_path, 0, sizeof(br->br_path));
+out:
+	return err;
+}
+
+static void au_br_do_add_brp(struct au_sbinfo *sbinfo, aufs_bindex_t bindex,
+			     struct au_branch *br, aufs_bindex_t bbot,
+			     aufs_bindex_t amount)
+{
+	struct au_branch **brp;
+
+	AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+	brp = sbinfo->si_branch + bindex;
+	memmove(brp + 1, brp, sizeof(*brp) * amount);
+	*brp = br;
+	sbinfo->si_bbot++;
+	if (unlikely(bbot < 0))
+		sbinfo->si_bbot = 0;
+}
+
+static void au_br_do_add_hdp(struct au_dinfo *dinfo, aufs_bindex_t bindex,
+			     aufs_bindex_t bbot, aufs_bindex_t amount)
+{
+	struct au_hdentry *hdp;
+
+	AuRwMustWriteLock(&dinfo->di_rwsem);
+
+	hdp = au_hdentry(dinfo, bindex);
+	memmove(hdp + 1, hdp, sizeof(*hdp) * amount);
+	au_h_dentry_init(hdp);
+	dinfo->di_bbot++;
+	if (unlikely(bbot < 0))
+		dinfo->di_btop = 0;
+}
+
+static void au_br_do_add_hip(struct au_iinfo *iinfo, aufs_bindex_t bindex,
+			     aufs_bindex_t bbot, aufs_bindex_t amount)
+{
+	struct au_hinode *hip;
+
+	AuRwMustWriteLock(&iinfo->ii_rwsem);
+
+	hip = au_hinode(iinfo, bindex);
+	memmove(hip + 1, hip, sizeof(*hip) * amount);
+	au_hinode_init(hip);
+	iinfo->ii_bbot++;
+	if (unlikely(bbot < 0))
+		iinfo->ii_btop = 0;
+}
+
+static void au_br_do_add(struct super_block *sb, struct au_branch *br,
+			 aufs_bindex_t bindex)
+{
+	struct dentry *root, *h_dentry;
+	struct inode *root_inode, *h_inode;
+	aufs_bindex_t bbot, amount;
+
+	root = sb->s_root;
+	root_inode = d_inode(root);
+	bbot = au_sbbot(sb);
+	amount = bbot + 1 - bindex;
+	h_dentry = au_br_dentry(br);
+	au_sbilist_lock();
+	au_br_do_add_brp(au_sbi(sb), bindex, br, bbot, amount);
+	au_br_do_add_hdp(au_di(root), bindex, bbot, amount);
+	au_br_do_add_hip(au_ii(root_inode), bindex, bbot, amount);
+	au_set_h_dptr(root, bindex, dget(h_dentry));
+	h_inode = d_inode(h_dentry);
+	au_set_h_iptr(root_inode, bindex, au_igrab(h_inode), /*flags*/0);
+	au_sbilist_unlock();
+}
+
+int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount)
+{
+	int err;
+	aufs_bindex_t bbot, add_bindex;
+	struct dentry *root, *h_dentry;
+	struct inode *root_inode;
+	struct au_branch *add_branch;
+
+	root = sb->s_root;
+	root_inode = d_inode(root);
+	IMustLock(root_inode);
+	IiMustWriteLock(root_inode);
+	err = test_add(sb, add, remount);
+	if (unlikely(err < 0))
+		goto out;
+	if (err) {
+		err = 0;
+		goto out; /* success */
+	}
+
+	bbot = au_sbbot(sb);
+	add_branch = au_br_alloc(sb, bbot + 2, add->perm);
+	err = PTR_ERR(add_branch);
+	if (IS_ERR(add_branch))
+		goto out;
+
+	err = au_br_init(add_branch, sb, add);
+	if (unlikely(err)) {
+		au_br_do_free(add_branch);
+		goto out;
+	}
+
+	add_bindex = add->bindex;
+	sysaufs_brs_del(sb, add_bindex);	/* remove successors */
+	au_br_do_add(sb, add_branch, add_bindex);
+	sysaufs_brs_add(sb, add_bindex);	/* append successors */
+	dbgaufs_brs_add(sb, add_bindex, /*topdown*/0);	/* rename successors */
+
+	h_dentry = add->path.dentry;
+	if (!add_bindex) {
+		au_cpup_attr_all(root_inode, /*force*/1);
+		sb->s_maxbytes = h_dentry->d_sb->s_maxbytes;
+	} else
+		au_add_nlink(root_inode, d_inode(h_dentry));
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static unsigned long long au_farray_cb(struct super_block *sb, void *a,
+				       unsigned long long max __maybe_unused,
+				       void *arg)
+{
+	unsigned long long n;
+	struct file **p, *f;
+	struct hlist_bl_head *files;
+	struct hlist_bl_node *pos;
+	struct au_finfo *finfo;
+
+	n = 0;
+	p = a;
+	files = &au_sbi(sb)->si_files;
+	hlist_bl_lock(files);
+	hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) {
+		f = finfo->fi_file;
+		if (file_count(f)
+		    && !special_file(file_inode(f)->i_mode)) {
+			get_file(f);
+			*p++ = f;
+			n++;
+			AuDebugOn(n > max);
+		}
+	}
+	hlist_bl_unlock(files);
+
+	return n;
+}
+
+static struct file **au_farray_alloc(struct super_block *sb,
+				     unsigned long long *max)
+{
+	struct au_sbinfo *sbi;
+
+	sbi = au_sbi(sb);
+	*max = au_lcnt_read(&sbi->si_nfiles, /*do_rev*/1);
+	return au_array_alloc(max, au_farray_cb, sb, /*arg*/NULL);
+}
+
+static void au_farray_free(struct file **a, unsigned long long max)
+{
+	unsigned long long ull;
+
+	for (ull = 0; ull < max; ull++)
+		if (a[ull])
+			fput(a[ull]);
+	kvfree(a);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * delete a branch
+ */
+
+/* to show the line number, do not make it inlined function */
+#define AuVerbose(do_info, fmt, ...) do { \
+	if (do_info) \
+		pr_info(fmt, ##__VA_ARGS__); \
+} while (0)
+
+static int au_test_ibusy(struct inode *inode, aufs_bindex_t btop,
+			 aufs_bindex_t bbot)
+{
+	return (inode && !S_ISDIR(inode->i_mode)) || btop == bbot;
+}
+
+static int au_test_dbusy(struct dentry *dentry, aufs_bindex_t btop,
+			 aufs_bindex_t bbot)
+{
+	return au_test_ibusy(d_inode(dentry), btop, bbot);
+}
+
+/*
+ * test if the branch is deletable or not.
+ */
+static int test_dentry_busy(struct dentry *root, aufs_bindex_t bindex,
+			    unsigned int sigen, const unsigned int verbose)
+{
+	int err, i, j, ndentry;
+	aufs_bindex_t btop, bbot;
+	struct au_dcsub_pages dpages;
+	struct au_dpage *dpage;
+	struct dentry *d;
+
+	err = au_dpages_init(&dpages, GFP_NOFS);
+	if (unlikely(err))
+		goto out;
+	err = au_dcsub_pages(&dpages, root, NULL, NULL);
+	if (unlikely(err))
+		goto out_dpages;
+
+	for (i = 0; !err && i < dpages.ndpage; i++) {
+		dpage = dpages.dpages + i;
+		ndentry = dpage->ndentry;
+		for (j = 0; !err && j < ndentry; j++) {
+			d = dpage->dentries[j];
+			AuDebugOn(au_dcount(d) <= 0);
+			if (!au_digen_test(d, sigen)) {
+				di_read_lock_child(d, AuLock_IR);
+				if (unlikely(au_dbrange_test(d))) {
+					di_read_unlock(d, AuLock_IR);
+					continue;
+				}
+			} else {
+				di_write_lock_child(d);
+				if (unlikely(au_dbrange_test(d))) {
+					di_write_unlock(d);
+					continue;
+				}
+				err = au_reval_dpath(d, sigen);
+				if (!err)
+					di_downgrade_lock(d, AuLock_IR);
+				else {
+					di_write_unlock(d);
+					break;
+				}
+			}
+
+			/* AuDbgDentry(d); */
+			btop = au_dbtop(d);
+			bbot = au_dbbot(d);
+			if (btop <= bindex
+			    && bindex <= bbot
+			    && au_h_dptr(d, bindex)
+			    && au_test_dbusy(d, btop, bbot)) {
+				err = -EBUSY;
+				AuVerbose(verbose, "busy %pd\n", d);
+				AuDbgDentry(d);
+			}
+			di_read_unlock(d, AuLock_IR);
+		}
+	}
+
+out_dpages:
+	au_dpages_free(&dpages);
+out:
+	return err;
+}
+
+static int test_inode_busy(struct super_block *sb, aufs_bindex_t bindex,
+			   unsigned int sigen, const unsigned int verbose)
+{
+	int err;
+	unsigned long long max, ull;
+	struct inode *i, **array;
+	aufs_bindex_t btop, bbot;
+
+	array = au_iarray_alloc(sb, &max);
+	err = PTR_ERR(array);
+	if (IS_ERR(array))
+		goto out;
+
+	err = 0;
+	AuDbg("b%d\n", bindex);
+	for (ull = 0; !err && ull < max; ull++) {
+		i = array[ull];
+		if (unlikely(!i))
+			break;
+		if (i->i_ino == AUFS_ROOT_INO)
+			continue;
+
+		/* AuDbgInode(i); */
+		if (au_iigen(i, NULL) == sigen)
+			ii_read_lock_child(i);
+		else {
+			ii_write_lock_child(i);
+			err = au_refresh_hinode_self(i);
+			au_iigen_dec(i);
+			if (!err)
+				ii_downgrade_lock(i);
+			else {
+				ii_write_unlock(i);
+				break;
+			}
+		}
+
+		btop = au_ibtop(i);
+		bbot = au_ibbot(i);
+		if (btop <= bindex
+		    && bindex <= bbot
+		    && au_h_iptr(i, bindex)
+		    && au_test_ibusy(i, btop, bbot)) {
+			err = -EBUSY;
+			AuVerbose(verbose, "busy i%lu\n", i->i_ino);
+			AuDbgInode(i);
+		}
+		ii_read_unlock(i);
+	}
+	au_iarray_free(array, max);
+
+out:
+	return err;
+}
+
+static int test_children_busy(struct dentry *root, aufs_bindex_t bindex,
+			      const unsigned int verbose)
+{
+	int err;
+	unsigned int sigen;
+
+	sigen = au_sigen(root->d_sb);
+	DiMustNoWaiters(root);
+	IiMustNoWaiters(d_inode(root));
+	di_write_unlock(root);
+	err = test_dentry_busy(root, bindex, sigen, verbose);
+	if (!err)
+		err = test_inode_busy(root->d_sb, bindex, sigen, verbose);
+	di_write_lock_child(root); /* aufs_write_lock() calls ..._child() */
+
+	return err;
+}
+
+static int test_dir_busy(struct file *file, aufs_bindex_t br_id,
+			 struct file **to_free, int *idx)
+{
+	int err;
+	unsigned char matched, root;
+	aufs_bindex_t bindex, bbot;
+	struct au_fidir *fidir;
+	struct au_hfile *hfile;
+
+	err = 0;
+	root = IS_ROOT(file->f_path.dentry);
+	if (root) {
+		get_file(file);
+		to_free[*idx] = file;
+		(*idx)++;
+		goto out;
+	}
+
+	matched = 0;
+	fidir = au_fi(file)->fi_hdir;
+	AuDebugOn(!fidir);
+	bbot = au_fbbot_dir(file);
+	for (bindex = au_fbtop(file); bindex <= bbot; bindex++) {
+		hfile = fidir->fd_hfile + bindex;
+		if (!hfile->hf_file)
+			continue;
+
+		if (hfile->hf_br->br_id == br_id) {
+			matched = 1;
+			break;
+		}
+	}
+	if (matched)
+		err = -EBUSY;
+
+out:
+	return err;
+}
+
+static int test_file_busy(struct super_block *sb, aufs_bindex_t br_id,
+			  struct file **to_free, int opened)
+{
+	int err, idx;
+	unsigned long long ull, max;
+	aufs_bindex_t btop;
+	struct file *file, **array;
+	struct dentry *root;
+	struct au_hfile *hfile;
+
+	array = au_farray_alloc(sb, &max);
+	err = PTR_ERR(array);
+	if (IS_ERR(array))
+		goto out;
+
+	err = 0;
+	idx = 0;
+	root = sb->s_root;
+	di_write_unlock(root);
+	for (ull = 0; ull < max; ull++) {
+		file = array[ull];
+		if (unlikely(!file))
+			break;
+
+		/* AuDbg("%pD\n", file); */
+		fi_read_lock(file);
+		btop = au_fbtop(file);
+		if (!d_is_dir(file->f_path.dentry)) {
+			hfile = &au_fi(file)->fi_htop;
+			if (hfile->hf_br->br_id == br_id)
+				err = -EBUSY;
+		} else
+			err = test_dir_busy(file, br_id, to_free, &idx);
+		fi_read_unlock(file);
+		if (unlikely(err))
+			break;
+	}
+	di_write_lock_child(root);
+	au_farray_free(array, max);
+	AuDebugOn(idx > opened);
+
+out:
+	return err;
+}
+
+static void br_del_file(struct file **to_free, unsigned long long opened,
+			aufs_bindex_t br_id)
+{
+	unsigned long long ull;
+	aufs_bindex_t bindex, btop, bbot, bfound;
+	struct file *file;
+	struct au_fidir *fidir;
+	struct au_hfile *hfile;
+
+	for (ull = 0; ull < opened; ull++) {
+		file = to_free[ull];
+		if (unlikely(!file))
+			break;
+
+		/* AuDbg("%pD\n", file); */
+		AuDebugOn(!d_is_dir(file->f_path.dentry));
+		bfound = -1;
+		fidir = au_fi(file)->fi_hdir;
+		AuDebugOn(!fidir);
+		fi_write_lock(file);
+		btop = au_fbtop(file);
+		bbot = au_fbbot_dir(file);
+		for (bindex = btop; bindex <= bbot; bindex++) {
+			hfile = fidir->fd_hfile + bindex;
+			if (!hfile->hf_file)
+				continue;
+
+			if (hfile->hf_br->br_id == br_id) {
+				bfound = bindex;
+				break;
+			}
+		}
+		AuDebugOn(bfound < 0);
+		au_set_h_fptr(file, bfound, NULL);
+		if (bfound == btop) {
+			for (btop++; btop <= bbot; btop++)
+				if (au_hf_dir(file, btop)) {
+					au_set_fbtop(file, btop);
+					break;
+				}
+		}
+		fi_write_unlock(file);
+	}
+}
+
+static void au_br_do_del_brp(struct au_sbinfo *sbinfo,
+			     const aufs_bindex_t bindex,
+			     const aufs_bindex_t bbot)
+{
+	struct au_branch **brp, **p;
+
+	AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+	brp = sbinfo->si_branch + bindex;
+	if (bindex < bbot)
+		memmove(brp, brp + 1, sizeof(*brp) * (bbot - bindex));
+	sbinfo->si_branch[0 + bbot] = NULL;
+	sbinfo->si_bbot--;
+
+	p = au_krealloc(sbinfo->si_branch, sizeof(*p) * bbot, AuGFP_SBILIST,
+			/*may_shrink*/1);
+	if (p)
+		sbinfo->si_branch = p;
+	/* harmless error */
+}
+
+static void au_br_do_del_hdp(struct au_dinfo *dinfo, const aufs_bindex_t bindex,
+			     const aufs_bindex_t bbot)
+{
+	struct au_hdentry *hdp, *p;
+
+	AuRwMustWriteLock(&dinfo->di_rwsem);
+
+	hdp = au_hdentry(dinfo, bindex);
+	if (bindex < bbot)
+		memmove(hdp, hdp + 1, sizeof(*hdp) * (bbot - bindex));
+	/* au_h_dentry_init(au_hdentry(dinfo, bbot); */
+	dinfo->di_bbot--;
+
+	p = au_krealloc(dinfo->di_hdentry, sizeof(*p) * bbot, AuGFP_SBILIST,
+			/*may_shrink*/1);
+	if (p)
+		dinfo->di_hdentry = p;
+	/* harmless error */
+}
+
+static void au_br_do_del_hip(struct au_iinfo *iinfo, const aufs_bindex_t bindex,
+			     const aufs_bindex_t bbot)
+{
+	struct au_hinode *hip, *p;
+
+	AuRwMustWriteLock(&iinfo->ii_rwsem);
+
+	hip = au_hinode(iinfo, bindex);
+	if (bindex < bbot)
+		memmove(hip, hip + 1, sizeof(*hip) * (bbot - bindex));
+	/* au_hinode_init(au_hinode(iinfo, bbot)); */
+	iinfo->ii_bbot--;
+
+	p = au_krealloc(iinfo->ii_hinode, sizeof(*p) * bbot, AuGFP_SBILIST,
+			/*may_shrink*/1);
+	if (p)
+		iinfo->ii_hinode = p;
+	/* harmless error */
+}
+
+static void au_br_do_del(struct super_block *sb, aufs_bindex_t bindex,
+			 struct au_branch *br)
+{
+	aufs_bindex_t bbot;
+	struct au_sbinfo *sbinfo;
+	struct dentry *root, *h_root;
+	struct inode *inode, *h_inode;
+	struct au_hinode *hinode;
+
+	SiMustWriteLock(sb);
+
+	root = sb->s_root;
+	inode = d_inode(root);
+	sbinfo = au_sbi(sb);
+	bbot = sbinfo->si_bbot;
+
+	h_root = au_h_dptr(root, bindex);
+	hinode = au_hi(inode, bindex);
+	h_inode = au_igrab(hinode->hi_inode);
+	au_hiput(hinode);
+
+	au_sbilist_lock();
+	au_br_do_del_brp(sbinfo, bindex, bbot);
+	au_br_do_del_hdp(au_di(root), bindex, bbot);
+	au_br_do_del_hip(au_ii(inode), bindex, bbot);
+	au_sbilist_unlock();
+
+	/* ignore an error */
+	au_dr_br_fin(sb, br); /* always, regardless the mount option */
+
+	dput(h_root);
+	iput(h_inode);
+	au_br_do_free(br);
+}
+
+static unsigned long long empty_cb(struct super_block *sb, void *array,
+				   unsigned long long max, void *arg)
+{
+	return max;
+}
+
+int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount)
+{
+	int err, rerr, i;
+	unsigned long long opened;
+	unsigned int mnt_flags;
+	aufs_bindex_t bindex, bbot, br_id;
+	unsigned char do_wh, verbose;
+	struct au_branch *br;
+	struct au_wbr *wbr;
+	struct dentry *root;
+	struct file **to_free;
+
+	err = 0;
+	opened = 0;
+	to_free = NULL;
+	root = sb->s_root;
+	bindex = au_find_dbindex(root, del->h_path.dentry);
+	if (bindex < 0) {
+		if (remount)
+			goto out; /* success */
+		err = -ENOENT;
+		pr_err("%s no such branch\n", del->pathname);
+		goto out;
+	}
+	AuDbg("bindex b%d\n", bindex);
+
+	err = -EBUSY;
+	mnt_flags = au_mntflags(sb);
+	verbose = !!au_opt_test(mnt_flags, VERBOSE);
+	bbot = au_sbbot(sb);
+	if (unlikely(!bbot)) {
+		AuVerbose(verbose, "no more branches left\n");
+		goto out;
+	}
+
+	br = au_sbr(sb, bindex);
+	AuDebugOn(!path_equal(&br->br_path, &del->h_path));
+	if (unlikely(au_lcnt_read(&br->br_count, /*do_rev*/1))) {
+		AuVerbose(verbose, "br %pd2 is busy now\n", del->h_path.dentry);
+		goto out;
+	}
+
+	br_id = br->br_id;
+	opened = au_lcnt_read(&br->br_nfiles, /*do_rev*/1);
+	if (unlikely(opened)) {
+		to_free = au_array_alloc(&opened, empty_cb, sb, NULL);
+		err = PTR_ERR(to_free);
+		if (IS_ERR(to_free))
+			goto out;
+
+		err = test_file_busy(sb, br_id, to_free, opened);
+		if (unlikely(err)) {
+			AuVerbose(verbose, "%llu file(s) opened\n", opened);
+			goto out;
+		}
+	}
+
+	wbr = br->br_wbr;
+	do_wh = wbr && (wbr->wbr_whbase || wbr->wbr_plink || wbr->wbr_orph);
+	if (do_wh) {
+		/* instead of WbrWhMustWriteLock(wbr) */
+		SiMustWriteLock(sb);
+		for (i = 0; i < AuBrWh_Last; i++) {
+			dput(wbr->wbr_wh[i]);
+			wbr->wbr_wh[i] = NULL;
+		}
+	}
+
+	err = test_children_busy(root, bindex, verbose);
+	if (unlikely(err)) {
+		if (do_wh)
+			goto out_wh;
+		goto out;
+	}
+
+	err = 0;
+	if (to_free) {
+		/*
+		 * now we confirmed the branch is deletable.
+		 * let's free the remaining opened dirs on the branch.
+		 */
+		di_write_unlock(root);
+		br_del_file(to_free, opened, br_id);
+		di_write_lock_child(root);
+	}
+
+	sysaufs_brs_del(sb, bindex);	/* remove successors */
+	dbgaufs_xino_del(br);		/* remove one */
+	au_br_do_del(sb, bindex, br);
+	sysaufs_brs_add(sb, bindex);	/* append successors */
+	dbgaufs_brs_add(sb, bindex, /*topdown*/1);	/* rename successors */
+
+	if (!bindex) {
+		au_cpup_attr_all(d_inode(root), /*force*/1);
+		sb->s_maxbytes = au_sbr_sb(sb, 0)->s_maxbytes;
+	} else
+		au_sub_nlink(d_inode(root), d_inode(del->h_path.dentry));
+	if (au_opt_test(mnt_flags, PLINK))
+		au_plink_half_refresh(sb, br_id);
+
+	goto out; /* success */
+
+out_wh:
+	/* revert */
+	rerr = au_br_init_wh(sb, br, br->br_perm);
+	if (rerr)
+		pr_warn("failed re-creating base whiteout, %s. (%d)\n",
+			del->pathname, rerr);
+out:
+	if (to_free)
+		au_farray_free(to_free, opened);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_ibusy(struct super_block *sb, struct aufs_ibusy __user *arg)
+{
+	int err;
+	aufs_bindex_t btop, bbot;
+	struct aufs_ibusy ibusy;
+	struct inode *inode, *h_inode;
+
+	err = -EPERM;
+	if (unlikely(!capable(CAP_SYS_ADMIN)))
+		goto out;
+
+	err = copy_from_user(&ibusy, arg, sizeof(ibusy));
+	if (!err)
+		/* VERIFY_WRITE */
+		err = !access_ok(&arg->h_ino, sizeof(arg->h_ino));
+	if (unlikely(err)) {
+		err = -EFAULT;
+		AuTraceErr(err);
+		goto out;
+	}
+
+	err = -EINVAL;
+	si_read_lock(sb, AuLock_FLUSH);
+	if (unlikely(ibusy.bindex < 0 || ibusy.bindex > au_sbbot(sb)))
+		goto out_unlock;
+
+	err = 0;
+	ibusy.h_ino = 0; /* invalid */
+	inode = ilookup(sb, ibusy.ino);
+	if (!inode
+	    || inode->i_ino == AUFS_ROOT_INO
+	    || au_is_bad_inode(inode))
+		goto out_unlock;
+
+	ii_read_lock_child(inode);
+	btop = au_ibtop(inode);
+	bbot = au_ibbot(inode);
+	if (btop <= ibusy.bindex && ibusy.bindex <= bbot) {
+		h_inode = au_h_iptr(inode, ibusy.bindex);
+		if (h_inode && au_test_ibusy(inode, btop, bbot))
+			ibusy.h_ino = h_inode->i_ino;
+	}
+	ii_read_unlock(inode);
+	iput(inode);
+
+out_unlock:
+	si_read_unlock(sb);
+	if (!err) {
+		err = __put_user(ibusy.h_ino, &arg->h_ino);
+		if (unlikely(err)) {
+			err = -EFAULT;
+			AuTraceErr(err);
+		}
+	}
+out:
+	return err;
+}
+
+long au_ibusy_ioctl(struct file *file, unsigned long arg)
+{
+	return au_ibusy(file->f_path.dentry->d_sb, (void __user *)arg);
+}
+
+#ifdef CONFIG_COMPAT
+long au_ibusy_compat_ioctl(struct file *file, unsigned long arg)
+{
+	return au_ibusy(file->f_path.dentry->d_sb, compat_ptr(arg));
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * change a branch permission
+ */
+
+static void au_warn_ima(void)
+{
+#ifdef CONFIG_IMA
+	/* since it doesn't support mark_files_ro() */
+	AuWarn1("RW -> RO makes IMA to produce wrong message\n");
+#endif
+}
+
+static int do_need_sigen_inc(int a, int b)
+{
+	return au_br_whable(a) && !au_br_whable(b);
+}
+
+static int need_sigen_inc(int old, int new)
+{
+	return do_need_sigen_inc(old, new)
+		|| do_need_sigen_inc(new, old);
+}
+
+static int au_br_mod_files_ro(struct super_block *sb, aufs_bindex_t bindex)
+{
+	int err, do_warn;
+	unsigned int mnt_flags;
+	unsigned long long ull, max;
+	aufs_bindex_t br_id;
+	unsigned char verbose, writer;
+	struct file *file, *hf, **array;
+	struct au_hfile *hfile;
+	struct inode *h_inode;
+
+	mnt_flags = au_mntflags(sb);
+	verbose = !!au_opt_test(mnt_flags, VERBOSE);
+
+	array = au_farray_alloc(sb, &max);
+	err = PTR_ERR(array);
+	if (IS_ERR(array))
+		goto out;
+
+	do_warn = 0;
+	br_id = au_sbr_id(sb, bindex);
+	for (ull = 0; ull < max; ull++) {
+		file = array[ull];
+		if (unlikely(!file))
+			break;
+
+		/* AuDbg("%pD\n", file); */
+		fi_read_lock(file);
+		if (unlikely(au_test_mmapped(file))) {
+			err = -EBUSY;
+			AuVerbose(verbose, "mmapped %pD\n", file);
+			AuDbgFile(file);
+			FiMustNoWaiters(file);
+			fi_read_unlock(file);
+			goto out_array;
+		}
+
+		hfile = &au_fi(file)->fi_htop;
+		hf = hfile->hf_file;
+		if (!d_is_reg(file->f_path.dentry)
+		    || !(file->f_mode & FMODE_WRITE)
+		    || hfile->hf_br->br_id != br_id
+		    || !(hf->f_mode & FMODE_WRITE))
+			array[ull] = NULL;
+		else {
+			do_warn = 1;
+			get_file(file);
+		}
+
+		FiMustNoWaiters(file);
+		fi_read_unlock(file);
+		fput(file);
+	}
+
+	err = 0;
+	if (do_warn)
+		au_warn_ima();
+
+	for (ull = 0; ull < max; ull++) {
+		file = array[ull];
+		if (!file)
+			continue;
+
+		/* todo: already flushed? */
+		/*
+		 * fs/super.c:mark_files_ro() is gone, but aufs keeps its
+		 * approach which resets f_mode and calls mnt_drop_write() and
+		 * file_release_write() for each file, because the branch
+		 * attribute in aufs world is totally different from the native
+		 * fs rw/ro mode.
+		*/
+		/* fi_read_lock(file); */
+		hfile = &au_fi(file)->fi_htop;
+		hf = hfile->hf_file;
+		/* fi_read_unlock(file); */
+		spin_lock(&hf->f_lock);
+		writer = !!(hf->f_mode & FMODE_WRITER);
+		hf->f_mode &= ~(FMODE_WRITE | FMODE_WRITER);
+		spin_unlock(&hf->f_lock);
+		if (writer) {
+			h_inode = file_inode(hf);
+			if (hf->f_mode & FMODE_READ)
+				i_readcount_inc(h_inode);
+			put_write_access(h_inode);
+			__mnt_drop_write(hf->f_path.mnt);
+		}
+	}
+
+out_array:
+	au_farray_free(array, max);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount,
+	      int *do_refresh)
+{
+	int err, rerr;
+	aufs_bindex_t bindex;
+	struct dentry *root;
+	struct au_branch *br;
+	struct au_br_fhsm *bf;
+
+	root = sb->s_root;
+	bindex = au_find_dbindex(root, mod->h_root);
+	if (bindex < 0) {
+		if (remount)
+			return 0; /* success */
+		err = -ENOENT;
+		pr_err("%s no such branch\n", mod->path);
+		goto out;
+	}
+	AuDbg("bindex b%d\n", bindex);
+
+	err = test_br(d_inode(mod->h_root), mod->perm, mod->path);
+	if (unlikely(err))
+		goto out;
+
+	br = au_sbr(sb, bindex);
+	AuDebugOn(mod->h_root != au_br_dentry(br));
+	if (br->br_perm == mod->perm)
+		return 0; /* success */
+
+	/* pre-allocate for non-fhsm --> fhsm */
+	bf = NULL;
+	if (!au_br_fhsm(br->br_perm) && au_br_fhsm(mod->perm)) {
+		err = au_fhsm_br_alloc(br);
+		if (unlikely(err))
+			goto out;
+		bf = br->br_fhsm;
+		br->br_fhsm = NULL;
+	}
+
+	if (au_br_writable(br->br_perm)) {
+		/* remove whiteout base */
+		err = au_br_init_wh(sb, br, mod->perm);
+		if (unlikely(err))
+			goto out_bf;
+
+		if (!au_br_writable(mod->perm)) {
+			/* rw --> ro, file might be mmapped */
+			DiMustNoWaiters(root);
+			IiMustNoWaiters(d_inode(root));
+			di_write_unlock(root);
+			err = au_br_mod_files_ro(sb, bindex);
+			/* aufs_write_lock() calls ..._child() */
+			di_write_lock_child(root);
+
+			if (unlikely(err)) {
+				rerr = -ENOMEM;
+				br->br_wbr = kzalloc(sizeof(*br->br_wbr),
+						     GFP_NOFS);
+				if (br->br_wbr)
+					rerr = au_wbr_init(br, sb, br->br_perm);
+				if (unlikely(rerr)) {
+					AuIOErr("nested error %d (%d)\n",
+						rerr, err);
+					br->br_perm = mod->perm;
+				}
+			}
+		}
+	} else if (au_br_writable(mod->perm)) {
+		/* ro --> rw */
+		err = -ENOMEM;
+		br->br_wbr = kzalloc(sizeof(*br->br_wbr), GFP_NOFS);
+		if (br->br_wbr) {
+			err = au_wbr_init(br, sb, mod->perm);
+			if (unlikely(err)) {
+				au_kfree_rcu(br->br_wbr);
+				br->br_wbr = NULL;
+			}
+		}
+	}
+	if (unlikely(err))
+		goto out_bf;
+
+	if (au_br_fhsm(br->br_perm)) {
+		if (!au_br_fhsm(mod->perm)) {
+			/* fhsm --> non-fhsm */
+			au_br_fhsm_fin(br->br_fhsm);
+			au_kfree_rcu(br->br_fhsm);
+			br->br_fhsm = NULL;
+		}
+	} else if (au_br_fhsm(mod->perm))
+		/* non-fhsm --> fhsm */
+		br->br_fhsm = bf;
+
+	*do_refresh |= need_sigen_inc(br->br_perm, mod->perm);
+	br->br_perm = mod->perm;
+	goto out; /* success */
+
+out_bf:
+	au_kfree_try_rcu(bf);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs)
+{
+	int err;
+	struct kstatfs kstfs;
+
+	err = vfs_statfs(&br->br_path, &kstfs);
+	if (!err) {
+		stfs->f_blocks = kstfs.f_blocks;
+		stfs->f_bavail = kstfs.f_bavail;
+		stfs->f_files = kstfs.f_files;
+		stfs->f_ffree = kstfs.f_ffree;
+	}
+
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/branch.h b/fs/aufs/branch.h
--- a/fs/aufs/branch.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/branch.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,375 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * branch filesystems and xino for them
+ */
+
+#ifndef __AUFS_BRANCH_H__
+#define __AUFS_BRANCH_H__
+
+#ifdef __KERNEL__
+
+#include <linux/mount.h>
+#include "dirren.h"
+#include "dynop.h"
+#include "lcnt.h"
+#include "rwsem.h"
+#include "super.h"
+
+/* ---------------------------------------------------------------------- */
+
+/* a xino file */
+struct au_xino {
+	struct file		**xi_file;
+	unsigned int		xi_nfile;
+
+	struct {
+		spinlock_t		spin;
+		ino_t			*array;
+		int			total;
+		/* reserved for future use */
+		/* unsigned long	*bitmap; */
+		wait_queue_head_t	wqh;
+	} xi_nondir;
+
+	struct mutex		xi_mtx;	/* protects xi_file array */
+	struct hlist_bl_head	xi_writing;
+
+	atomic_t		xi_truncating;
+
+	struct kref		xi_kref;
+};
+
+/* File-based Hierarchical Storage Management */
+struct au_br_fhsm {
+#ifdef CONFIG_AUFS_FHSM
+	struct mutex		bf_lock;
+	unsigned long		bf_jiffy;
+	struct aufs_stfs	bf_stfs;
+	int			bf_readable;
+#endif
+};
+
+/* members for writable branch only */
+enum {AuBrWh_BASE, AuBrWh_PLINK, AuBrWh_ORPH, AuBrWh_Last};
+struct au_wbr {
+	struct au_rwsem		wbr_wh_rwsem;
+	struct dentry		*wbr_wh[AuBrWh_Last];
+	atomic_t		wbr_wh_running;
+#define wbr_whbase		wbr_wh[AuBrWh_BASE]	/* whiteout base */
+#define wbr_plink		wbr_wh[AuBrWh_PLINK]	/* pseudo-link dir */
+#define wbr_orph		wbr_wh[AuBrWh_ORPH]	/* dir for orphans */
+
+	/* mfs mode */
+	unsigned long long	wbr_bytes;
+};
+
+/* ext2 has 3 types of operations at least, ext3 has 4 */
+#define AuBrDynOp (AuDyLast * 4)
+
+#ifdef CONFIG_AUFS_HFSNOTIFY
+/* support for asynchronous destruction */
+struct au_br_hfsnotify {
+	struct fsnotify_group	*hfsn_group;
+};
+#endif
+
+/* sysfs entries */
+struct au_brsysfs {
+	char			name[16];
+	struct attribute	attr;
+};
+
+enum {
+	AuBrSysfs_BR,
+	AuBrSysfs_BRID,
+	AuBrSysfs_Last
+};
+
+/* protected by superblock rwsem */
+struct au_branch {
+	struct au_xino		*br_xino;
+
+	aufs_bindex_t		br_id;
+
+	int			br_perm;
+	struct path		br_path;
+	spinlock_t		br_dykey_lock;
+	struct au_dykey		*br_dykey[AuBrDynOp];
+	au_lcnt_t		br_nfiles;	/* opened files */
+	au_lcnt_t		br_count;	/* in-use for other */
+
+	struct au_wbr		*br_wbr;
+	struct au_br_fhsm	*br_fhsm;
+
+#ifdef CONFIG_AUFS_HFSNOTIFY
+	struct au_br_hfsnotify	*br_hfsn;
+#endif
+
+#ifdef CONFIG_SYSFS
+	/* entries under sysfs per mount-point */
+	struct au_brsysfs	br_sysfs[AuBrSysfs_Last];
+#endif
+
+#ifdef CONFIG_DEBUG_FS
+	struct dentry		 *br_dbgaufs; /* xino */
+#endif
+
+	struct au_dr_br		br_dirren;
+};
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct vfsmount *au_br_mnt(struct au_branch *br)
+{
+	return br->br_path.mnt;
+}
+
+static inline struct dentry *au_br_dentry(struct au_branch *br)
+{
+	return br->br_path.dentry;
+}
+
+static inline struct user_namespace *au_br_userns(struct au_branch *br)
+{
+	return mnt_user_ns(br->br_path.mnt);
+}
+
+static inline struct super_block *au_br_sb(struct au_branch *br)
+{
+	return au_br_mnt(br)->mnt_sb;
+}
+
+static inline int au_br_rdonly(struct au_branch *br)
+{
+	return (sb_rdonly(au_br_sb(br))
+		|| !au_br_writable(br->br_perm))
+		? -EROFS : 0;
+}
+
+static inline int au_br_hnotifyable(int brperm __maybe_unused)
+{
+#ifdef CONFIG_AUFS_HNOTIFY
+	return !(brperm & AuBrPerm_RR);
+#else
+	return 0;
+#endif
+}
+
+static inline int au_br_test_oflag(int oflag, struct au_branch *br)
+{
+	int err, exec_flag;
+
+	err = 0;
+	exec_flag = oflag & __FMODE_EXEC;
+	if (unlikely(exec_flag && path_noexec(&br->br_path)))
+		err = -EACCES;
+
+	return err;
+}
+
+static inline void au_xino_get(struct au_branch *br)
+{
+	struct au_xino *xi;
+
+	xi = br->br_xino;
+	if (xi)
+		kref_get(&xi->xi_kref);
+}
+
+static inline int au_xino_count(struct au_branch *br)
+{
+	int v;
+	struct au_xino *xi;
+
+	v = 0;
+	xi = br->br_xino;
+	if (xi)
+		v = kref_read(&xi->xi_kref);
+
+	return v;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* branch.c */
+struct au_sbinfo;
+void au_br_free(struct au_sbinfo *sinfo);
+int au_br_index(struct super_block *sb, aufs_bindex_t br_id);
+struct au_opt_add;
+int au_br_add(struct super_block *sb, struct au_opt_add *add, int remount);
+struct au_opt_del;
+int au_br_del(struct super_block *sb, struct au_opt_del *del, int remount);
+long au_ibusy_ioctl(struct file *file, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long au_ibusy_compat_ioctl(struct file *file, unsigned long arg);
+#endif
+struct au_opt_mod;
+int au_br_mod(struct super_block *sb, struct au_opt_mod *mod, int remount,
+	      int *do_refresh);
+struct aufs_stfs;
+int au_br_stfs(struct au_branch *br, struct aufs_stfs *stfs);
+
+/* xino.c */
+static const loff_t au_loff_max = LLONG_MAX;
+
+aufs_bindex_t au_xi_root(struct super_block *sb, struct dentry *dentry);
+struct file *au_xino_create(struct super_block *sb, char *fpath, int silent,
+			    int wbrtop);
+struct file *au_xino_create2(struct super_block *sb, struct path *base,
+			     struct file *copy_src);
+struct au_xi_new {
+	struct au_xino *xi;	/* switch between xino and xigen */
+	int idx;
+	struct path *base;
+	struct file *copy_src;
+};
+struct file *au_xi_new(struct super_block *sb, struct au_xi_new *xinew);
+
+int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+		 ino_t *ino);
+int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+		  ino_t ino);
+ssize_t xino_fread(struct file *file, void *buf, size_t size, loff_t *pos);
+ssize_t xino_fwrite(struct file *file, void *buf, size_t size, loff_t *pos);
+
+int au_xib_trunc(struct super_block *sb);
+int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex, int idx_begin);
+
+struct au_xino *au_xino_alloc(unsigned int nfile);
+int au_xino_put(struct au_branch *br);
+struct file *au_xino_file1(struct au_xino *xi);
+
+struct au_opt_xino;
+void au_xino_clr(struct super_block *sb);
+int au_xino_set(struct super_block *sb, struct au_opt_xino *xiopt, int remount);
+struct file *au_xino_def(struct super_block *sb);
+int au_xino_init_br(struct super_block *sb, struct au_branch *br, ino_t hino,
+		    struct path *base);
+
+ino_t au_xino_new_ino(struct super_block *sb);
+void au_xino_delete_inode(struct inode *inode, const int unlinked);
+
+void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex,
+		       ino_t h_ino, int idx);
+int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+		      int *idx);
+
+int au_xino_path(struct seq_file *seq, struct file *file);
+
+/* ---------------------------------------------------------------------- */
+
+/* @idx is signed to accept -1 meaning the first file */
+static inline struct file *au_xino_file(struct au_xino *xi, int idx)
+{
+	struct file *file;
+
+	file = NULL;
+	if (!xi)
+		goto out;
+
+	if (idx >= 0) {
+		if (idx < xi->xi_nfile)
+			file = xi->xi_file[idx];
+	} else
+		file = au_xino_file1(xi);
+
+out:
+	return file;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* Superblock to branch */
+static inline
+aufs_bindex_t au_sbr_id(struct super_block *sb, aufs_bindex_t bindex)
+{
+	return au_sbr(sb, bindex)->br_id;
+}
+
+static inline
+struct vfsmount *au_sbr_mnt(struct super_block *sb, aufs_bindex_t bindex)
+{
+	return au_br_mnt(au_sbr(sb, bindex));
+}
+
+static inline
+struct user_namespace *au_sbr_userns(struct super_block *sb, aufs_bindex_t bindex)
+{
+	return au_br_userns(au_sbr(sb, bindex));
+}
+
+static inline
+struct super_block *au_sbr_sb(struct super_block *sb, aufs_bindex_t bindex)
+{
+	return au_br_sb(au_sbr(sb, bindex));
+}
+
+static inline int au_sbr_perm(struct super_block *sb, aufs_bindex_t bindex)
+{
+	return au_sbr(sb, bindex)->br_perm;
+}
+
+static inline int au_sbr_whable(struct super_block *sb, aufs_bindex_t bindex)
+{
+	return au_br_whable(au_sbr_perm(sb, bindex));
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define wbr_wh_read_lock(wbr)	au_rw_read_lock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_write_lock(wbr)	au_rw_write_lock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_read_trylock(wbr)	au_rw_read_trylock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_write_trylock(wbr) au_rw_write_trylock(&(wbr)->wbr_wh_rwsem)
+/*
+#define wbr_wh_read_trylock_nested(wbr) \
+	au_rw_read_trylock_nested(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_write_trylock_nested(wbr) \
+	au_rw_write_trylock_nested(&(wbr)->wbr_wh_rwsem)
+*/
+
+#define wbr_wh_read_unlock(wbr)	au_rw_read_unlock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_write_unlock(wbr)	au_rw_write_unlock(&(wbr)->wbr_wh_rwsem)
+#define wbr_wh_downgrade_lock(wbr)	au_rw_dgrade_lock(&(wbr)->wbr_wh_rwsem)
+
+#define WbrWhMustNoWaiters(wbr)	AuRwMustNoWaiters(&(wbr)->wbr_wh_rwsem)
+#define WbrWhMustAnyLock(wbr)	AuRwMustAnyLock(&(wbr)->wbr_wh_rwsem)
+#define WbrWhMustWriteLock(wbr)	AuRwMustWriteLock(&(wbr)->wbr_wh_rwsem)
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_FHSM
+static inline void au_br_fhsm_init(struct au_br_fhsm *brfhsm)
+{
+	mutex_init(&brfhsm->bf_lock);
+	brfhsm->bf_jiffy = 0;
+	brfhsm->bf_readable = 0;
+}
+
+static inline void au_br_fhsm_fin(struct au_br_fhsm *brfhsm)
+{
+	mutex_destroy(&brfhsm->bf_lock);
+}
+#else
+AuStubVoid(au_br_fhsm_init, struct au_br_fhsm *brfhsm)
+AuStubVoid(au_br_fhsm_fin, struct au_br_fhsm *brfhsm)
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_BRANCH_H__ */
diff -Naur --no-dereference a/fs/aufs/conf.mk b/fs/aufs/conf.mk
--- a/fs/aufs/conf.mk	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/conf.mk	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: GPL-2.0
+
+AuConfStr = CONFIG_AUFS_FS=${CONFIG_AUFS_FS}
+
+define AuConf
+ifdef ${1}
+AuConfStr += ${1}=${${1}}
+endif
+endef
+
+AuConfAll = BRANCH_MAX_127 BRANCH_MAX_511 BRANCH_MAX_1023 BRANCH_MAX_32767 \
+	SBILIST \
+	HNOTIFY HFSNOTIFY \
+	EXPORT INO_T_64 \
+	XATTR \
+	FHSM \
+	RDU \
+	DIRREN \
+	SHWH \
+	BR_RAMFS \
+	BR_FUSE POLL \
+	BR_HFSPLUS \
+	BDEV_LOOP \
+	DEBUG MAGIC_SYSRQ
+$(foreach i, ${AuConfAll}, \
+	$(eval $(call AuConf,CONFIG_AUFS_${i})))
+
+AuConfName = ${obj}/conf.str
+${AuConfName}.tmp: FORCE
+	@echo ${AuConfStr} | tr ' ' '\n' | sed -e 's/^/"/' -e 's/$$/\\n"/' > $@
+${AuConfName}: ${AuConfName}.tmp
+	@diff -q $< $@ > /dev/null 2>&1 || { \
+	echo '  GEN    ' $@; \
+	cp -p $< $@; \
+	}
+FORCE:
+clean-files += ${AuConfName} ${AuConfName}.tmp
+${obj}/sysfs.o: ${AuConfName}
+
+-include ${srctree}/${src}/conf_priv.mk
diff -Naur --no-dereference a/fs/aufs/cpup.c b/fs/aufs/cpup.c
--- a/fs/aufs/cpup.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/cpup.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1459 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * copy-up functions, see wbr_policy.c for copy-down
+ */
+
+#include <linux/fs_stack.h>
+#include <linux/mm.h>
+#include <linux/task_work.h>
+#include "aufs.h"
+
+void au_cpup_attr_flags(struct inode *dst, unsigned int iflags)
+{
+	const unsigned int mask = S_DEAD | S_SWAPFILE | S_PRIVATE
+		| S_NOATIME | S_NOCMTIME | S_AUTOMOUNT;
+
+	BUILD_BUG_ON(sizeof(iflags) != sizeof(dst->i_flags));
+
+	dst->i_flags |= iflags & ~mask;
+	if (au_test_fs_notime(dst->i_sb))
+		dst->i_flags |= S_NOATIME | S_NOCMTIME;
+}
+
+void au_cpup_attr_timesizes(struct inode *inode)
+{
+	struct inode *h_inode;
+
+	h_inode = au_h_iptr(inode, au_ibtop(inode));
+	fsstack_copy_attr_times(inode, h_inode);
+	fsstack_copy_inode_size(inode, h_inode);
+}
+
+void au_cpup_attr_nlink(struct inode *inode, int force)
+{
+	struct inode *h_inode;
+	struct super_block *sb;
+	aufs_bindex_t bindex, bbot;
+
+	sb = inode->i_sb;
+	bindex = au_ibtop(inode);
+	h_inode = au_h_iptr(inode, bindex);
+	if (!force
+	    && !S_ISDIR(h_inode->i_mode)
+	    && au_opt_test(au_mntflags(sb), PLINK)
+	    && au_plink_test(inode))
+		return;
+
+	/*
+	 * 0 can happen in revalidating.
+	 * h_inode->i_mutex may not be held here, but it is harmless since once
+	 * i_nlink reaches 0, it will never become positive except O_TMPFILE
+	 * case.
+	 * todo: O_TMPFILE+linkat(AT_SYMLINK_FOLLOW) bypassing aufs may cause
+	 *	 the incorrect link count.
+	 */
+	set_nlink(inode, h_inode->i_nlink);
+
+	/*
+	 * fewer nlink makes find(1) noisy, but larger nlink doesn't.
+	 * it may includes whplink directory.
+	 */
+	if (S_ISDIR(h_inode->i_mode)) {
+		bbot = au_ibbot(inode);
+		for (bindex++; bindex <= bbot; bindex++) {
+			h_inode = au_h_iptr(inode, bindex);
+			if (h_inode)
+				au_add_nlink(inode, h_inode);
+		}
+	}
+}
+
+void au_cpup_attr_changeable(struct inode *inode)
+{
+	struct inode *h_inode;
+
+	h_inode = au_h_iptr(inode, au_ibtop(inode));
+	inode->i_mode = h_inode->i_mode;
+	inode->i_uid = h_inode->i_uid;
+	inode->i_gid = h_inode->i_gid;
+	au_cpup_attr_timesizes(inode);
+	au_cpup_attr_flags(inode, h_inode->i_flags);
+}
+
+void au_cpup_igen(struct inode *inode, struct inode *h_inode)
+{
+	struct au_iinfo *iinfo = au_ii(inode);
+
+	IiMustWriteLock(inode);
+
+	iinfo->ii_higen = h_inode->i_generation;
+	iinfo->ii_hsb1 = h_inode->i_sb;
+}
+
+void au_cpup_attr_all(struct inode *inode, int force)
+{
+	struct inode *h_inode;
+
+	h_inode = au_h_iptr(inode, au_ibtop(inode));
+	au_cpup_attr_changeable(inode);
+	if (inode->i_nlink > 0)
+		au_cpup_attr_nlink(inode, force);
+	inode->i_rdev = h_inode->i_rdev;
+	inode->i_blkbits = h_inode->i_blkbits;
+	au_cpup_igen(inode, h_inode);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* Note: dt_dentry and dt_h_dentry are not dget/dput-ed */
+
+/* keep the timestamps of the parent dir when cpup */
+void au_dtime_store(struct au_dtime *dt, struct dentry *dentry,
+		    struct path *h_path)
+{
+	struct inode *h_inode;
+
+	dt->dt_dentry = dentry;
+	dt->dt_h_path = *h_path;
+	h_inode = d_inode(h_path->dentry);
+	dt->dt_atime = h_inode->i_atime;
+	dt->dt_mtime = h_inode->i_mtime;
+	/* smp_mb(); */
+}
+
+void au_dtime_revert(struct au_dtime *dt)
+{
+	struct iattr attr;
+	int err;
+
+	attr.ia_atime = dt->dt_atime;
+	attr.ia_mtime = dt->dt_mtime;
+	attr.ia_valid = ATTR_FORCE | ATTR_MTIME | ATTR_MTIME_SET
+		| ATTR_ATIME | ATTR_ATIME_SET;
+
+	/* no delegation since this is a directory */
+	err = vfsub_notify_change(&dt->dt_h_path, &attr, /*delegated*/NULL);
+	if (unlikely(err))
+		pr_warn("restoring timestamps failed(%d). ignored\n", err);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* internal use only */
+struct au_cpup_reg_attr {
+	int		valid;
+	struct kstat	st;
+	unsigned int	iflags; /* inode->i_flags */
+};
+
+static noinline_for_stack
+int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct path *h_src,
+	       struct au_cpup_reg_attr *h_src_attr)
+{
+	int err, sbits, icex;
+	unsigned int mnt_flags;
+	unsigned char verbose;
+	struct iattr ia;
+	struct path h_path;
+	struct inode *h_isrc, *h_idst;
+	struct kstat *h_st;
+	struct au_branch *br;
+
+	br = au_sbr(dst->d_sb, bindex);
+	h_path.mnt = au_br_mnt(br);
+	h_path.dentry = au_h_dptr(dst, bindex);
+	h_idst = d_inode(h_path.dentry);
+	h_isrc = d_inode(h_src->dentry);
+	ia.ia_valid = ATTR_FORCE | ATTR_UID | ATTR_GID
+		| ATTR_ATIME | ATTR_MTIME
+		| ATTR_ATIME_SET | ATTR_MTIME_SET;
+	if (h_src_attr && h_src_attr->valid) {
+		h_st = &h_src_attr->st;
+		ia.ia_uid = h_st->uid;
+		ia.ia_gid = h_st->gid;
+		ia.ia_atime = h_st->atime;
+		ia.ia_mtime = h_st->mtime;
+		if (h_idst->i_mode != h_st->mode
+		    && !S_ISLNK(h_idst->i_mode)) {
+			ia.ia_valid |= ATTR_MODE;
+			ia.ia_mode = h_st->mode;
+		}
+		sbits = !!(h_st->mode & (S_ISUID | S_ISGID));
+		au_cpup_attr_flags(h_idst, h_src_attr->iflags);
+	} else {
+		ia.ia_uid = h_isrc->i_uid;
+		ia.ia_gid = h_isrc->i_gid;
+		ia.ia_atime = h_isrc->i_atime;
+		ia.ia_mtime = h_isrc->i_mtime;
+		if (h_idst->i_mode != h_isrc->i_mode
+		    && !S_ISLNK(h_idst->i_mode)) {
+			ia.ia_valid |= ATTR_MODE;
+			ia.ia_mode = h_isrc->i_mode;
+		}
+		sbits = !!(h_isrc->i_mode & (S_ISUID | S_ISGID));
+		au_cpup_attr_flags(h_idst, h_isrc->i_flags);
+	}
+	/* no delegation since it is just created */
+	err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL);
+
+	/* is this nfs only? */
+	if (!err && sbits && au_test_nfs(h_path.dentry->d_sb)) {
+		ia.ia_valid = ATTR_FORCE | ATTR_MODE;
+		ia.ia_mode = h_isrc->i_mode;
+		err = vfsub_notify_change(&h_path, &ia, /*delegated*/NULL);
+	}
+
+	icex = br->br_perm & AuBrAttr_ICEX;
+	if (!err) {
+		mnt_flags = au_mntflags(dst->d_sb);
+		verbose = !!au_opt_test(mnt_flags, VERBOSE);
+		err = au_cpup_xattr(&h_path, h_src, icex, verbose);
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_copy_file(struct file *dst, struct file *src, loff_t len,
+			   char *buf, unsigned long blksize)
+{
+	int err;
+	size_t sz, rbytes, wbytes;
+	unsigned char all_zero;
+	char *p, *zp;
+	struct inode *h_inode;
+	/* reduce stack usage */
+	struct iattr *ia;
+
+	zp = page_address(ZERO_PAGE(0));
+	if (unlikely(!zp))
+		return -ENOMEM; /* possible? */
+
+	err = 0;
+	all_zero = 0;
+	while (len) {
+		AuDbg("len %lld\n", len);
+		sz = blksize;
+		if (len < blksize)
+			sz = len;
+
+		rbytes = 0;
+		/* todo: signal_pending? */
+		while (!rbytes || err == -EAGAIN || err == -EINTR) {
+			rbytes = vfsub_read_k(src, buf, sz, &src->f_pos);
+			err = rbytes;
+		}
+		if (unlikely(err < 0))
+			break;
+
+		all_zero = 0;
+		if (len >= rbytes && rbytes == blksize)
+			all_zero = !memcmp(buf, zp, rbytes);
+		if (!all_zero) {
+			wbytes = rbytes;
+			p = buf;
+			while (wbytes) {
+				size_t b;
+
+				b = vfsub_write_k(dst, p, wbytes, &dst->f_pos);
+				err = b;
+				/* todo: signal_pending? */
+				if (unlikely(err == -EAGAIN || err == -EINTR))
+					continue;
+				if (unlikely(err < 0))
+					break;
+				wbytes -= b;
+				p += b;
+			}
+			if (unlikely(err < 0))
+				break;
+		} else {
+			loff_t res;
+
+			AuLabel(hole);
+			res = vfsub_llseek(dst, rbytes, SEEK_CUR);
+			err = res;
+			if (unlikely(res < 0))
+				break;
+		}
+		len -= rbytes;
+		err = 0;
+	}
+
+	/* the last block may be a hole */
+	if (!err && all_zero) {
+		AuLabel(last hole);
+
+		err = 1;
+		if (au_test_nfs(dst->f_path.dentry->d_sb)) {
+			/* nfs requires this step to make last hole */
+			/* is this only nfs? */
+			do {
+				/* todo: signal_pending? */
+				err = vfsub_write_k(dst, "\0", 1, &dst->f_pos);
+			} while (err == -EAGAIN || err == -EINTR);
+			if (err == 1)
+				dst->f_pos--;
+		}
+
+		if (err == 1) {
+			ia = (void *)buf;
+			ia->ia_size = dst->f_pos;
+			ia->ia_valid = ATTR_SIZE | ATTR_FILE;
+			ia->ia_file = dst;
+			h_inode = file_inode(dst);
+			inode_lock_nested(h_inode, AuLsc_I_CHILD2);
+			/* no delegation since it is just created */
+			err = vfsub_notify_change(&dst->f_path, ia,
+						  /*delegated*/NULL);
+			inode_unlock(h_inode);
+		}
+	}
+
+	return err;
+}
+
+int au_copy_file(struct file *dst, struct file *src, loff_t len)
+{
+	int err;
+	unsigned long blksize;
+	unsigned char do_kfree;
+	char *buf;
+	struct super_block *h_sb;
+
+	err = -ENOMEM;
+	h_sb = file_inode(dst)->i_sb;
+	blksize = h_sb->s_blocksize;
+	if (!blksize || PAGE_SIZE < blksize)
+		blksize = PAGE_SIZE;
+	AuDbg("blksize %lu\n", blksize);
+	do_kfree = (blksize != PAGE_SIZE && blksize >= sizeof(struct iattr *));
+	if (do_kfree)
+		buf = kmalloc(blksize, GFP_NOFS);
+	else
+		buf = (void *)__get_free_page(GFP_NOFS);
+	if (unlikely(!buf))
+		goto out;
+
+	if (len > (1 << 22))
+		AuDbg("copying a large file %lld\n", (long long)len);
+
+	src->f_pos = 0;
+	dst->f_pos = 0;
+	err = au_do_copy_file(dst, src, len, buf, blksize);
+	if (do_kfree) {
+		AuDebugOn(!au_kfree_do_sz_test(blksize));
+		au_kfree_do_rcu(buf);
+	} else
+		free_page((unsigned long)buf);
+
+out:
+	return err;
+}
+
+static int au_do_copy(struct file *dst, struct file *src, loff_t len)
+{
+	int err;
+	struct super_block *h_src_sb;
+	struct inode *h_src_inode;
+
+	h_src_inode = file_inode(src);
+	h_src_sb = h_src_inode->i_sb;
+
+	/* XFS acquires inode_lock */
+	if (!au_test_xfs(h_src_sb))
+		err = au_copy_file(dst, src, len);
+	else {
+		inode_unlock_shared(h_src_inode);
+		err = au_copy_file(dst, src, len);
+		inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
+	}
+
+	return err;
+}
+
+static int au_clone_or_copy(struct file *dst, struct file *src, loff_t len)
+{
+	int err;
+	loff_t lo;
+	struct super_block *h_src_sb;
+	struct inode *h_src_inode;
+
+	h_src_inode = file_inode(src);
+	h_src_sb = h_src_inode->i_sb;
+	if (h_src_sb != file_inode(dst)->i_sb
+	    || !dst->f_op->remap_file_range) {
+		err = au_do_copy(dst, src, len);
+		goto out;
+	}
+
+	if (!au_test_nfs(h_src_sb)) {
+		inode_unlock_shared(h_src_inode);
+		lo = vfsub_clone_file_range(src, dst, len);
+		inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
+	} else
+		lo = vfsub_clone_file_range(src, dst, len);
+	if (lo == len) {
+		err = 0;
+		goto out; /* success */
+	} else if (lo >= 0)
+		/* todo: possible? */
+		/* paritially succeeded */
+		AuDbg("lo %lld, len %lld. Retrying.\n", lo, len);
+	else if (lo != -EOPNOTSUPP) {
+		/* older XFS has a condition in cloning */
+		err = lo;
+		goto out;
+	}
+
+	/* the backend fs on NFS may not support cloning */
+	err = au_do_copy(dst, src, len);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/*
+ * to support a sparse file which is opened with O_APPEND,
+ * we need to close the file.
+ */
+static int au_cp_regular(struct au_cp_generic *cpg)
+{
+	int err, i;
+	enum { SRC, DST };
+	struct {
+		aufs_bindex_t bindex;
+		unsigned int flags;
+		struct dentry *dentry;
+		int force_wr;
+		struct file *file;
+	} *f, file[] = {
+		{
+			.bindex = cpg->bsrc,
+			.flags = O_RDONLY | O_NOATIME | O_LARGEFILE,
+		},
+		{
+			.bindex = cpg->bdst,
+			.flags = O_WRONLY | O_NOATIME | O_LARGEFILE,
+			.force_wr = !!au_ftest_cpup(cpg->flags, RWDST),
+		}
+	};
+	struct au_branch *br;
+	struct super_block *sb, *h_src_sb;
+	struct inode *h_src_inode;
+	struct task_struct *tsk = current;
+
+	/* bsrc branch can be ro/rw. */
+	sb = cpg->dentry->d_sb;
+	f = file;
+	for (i = 0; i < 2; i++, f++) {
+		f->dentry = au_h_dptr(cpg->dentry, f->bindex);
+		f->file = au_h_open(cpg->dentry, f->bindex, f->flags,
+				    /*file*/NULL, f->force_wr);
+		if (IS_ERR(f->file)) {
+			err = PTR_ERR(f->file);
+			if (i == SRC)
+				goto out;
+			else
+				goto out_src;
+		}
+	}
+
+	/* try stopping to update while we copyup */
+	h_src_inode = d_inode(file[SRC].dentry);
+	h_src_sb = h_src_inode->i_sb;
+	if (!au_test_nfs(h_src_sb))
+		IMustLock(h_src_inode);
+	err = au_clone_or_copy(file[DST].file, file[SRC].file, cpg->len);
+
+	/* i wonder if we had O_NO_DELAY_FPUT flag */
+	if (tsk->flags & PF_KTHREAD)
+		__fput_sync(file[DST].file);
+	else {
+		/* it happened actually */
+		fput(file[DST].file);
+		/*
+		 * too bad.
+		 * we have to call both since we don't know which place the file
+		 * was added to.
+		 */
+		task_work_run();
+		flush_delayed_fput();
+	}
+	br = au_sbr(sb, file[DST].bindex);
+	au_lcnt_dec(&br->br_nfiles);
+
+out_src:
+	fput(file[SRC].file);
+	br = au_sbr(sb, file[SRC].bindex);
+	au_lcnt_dec(&br->br_nfiles);
+out:
+	return err;
+}
+
+static int au_do_cpup_regular(struct au_cp_generic *cpg,
+			      struct au_cpup_reg_attr *h_src_attr)
+{
+	int err, rerr;
+	loff_t l;
+	struct path h_path;
+	struct inode *h_src_inode, *h_dst_inode;
+
+	err = 0;
+	h_src_inode = au_h_iptr(d_inode(cpg->dentry), cpg->bsrc);
+	l = i_size_read(h_src_inode);
+	if (cpg->len == -1 || l < cpg->len)
+		cpg->len = l;
+	if (cpg->len) {
+		/* try stopping to update while we are referencing */
+		inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
+		au_pin_hdir_unlock(cpg->pin);
+
+		h_path.dentry = au_h_dptr(cpg->dentry, cpg->bsrc);
+		h_path.mnt = au_sbr_mnt(cpg->dentry->d_sb, cpg->bsrc);
+		h_src_attr->iflags = h_src_inode->i_flags;
+		if (!au_test_nfs(h_src_inode->i_sb))
+			err = vfsub_getattr(&h_path, &h_src_attr->st);
+		else {
+			inode_unlock_shared(h_src_inode);
+			err = vfsub_getattr(&h_path, &h_src_attr->st);
+			inode_lock_shared_nested(h_src_inode, AuLsc_I_CHILD);
+		}
+		if (unlikely(err)) {
+			inode_unlock_shared(h_src_inode);
+			goto out;
+		}
+		h_src_attr->valid = 1;
+		if (!au_test_nfs(h_src_inode->i_sb)) {
+			err = au_cp_regular(cpg);
+			inode_unlock_shared(h_src_inode);
+		} else {
+			inode_unlock_shared(h_src_inode);
+			err = au_cp_regular(cpg);
+		}
+		rerr = au_pin_hdir_relock(cpg->pin);
+		if (!err && rerr)
+			err = rerr;
+	}
+	if (!err && (h_src_inode->i_state & I_LINKABLE)) {
+		h_path.dentry = au_h_dptr(cpg->dentry, cpg->bdst);
+		h_dst_inode = d_inode(h_path.dentry);
+		spin_lock(&h_dst_inode->i_lock);
+		h_dst_inode->i_state |= I_LINKABLE;
+		spin_unlock(&h_dst_inode->i_lock);
+	}
+
+out:
+	return err;
+}
+
+static int au_do_cpup_symlink(struct path *h_path, struct dentry *h_src,
+			      struct inode *h_dir)
+{
+	int err;
+	DEFINE_DELAYED_CALL(done);
+	const char *sym;
+
+	sym = vfs_get_link(h_src, &done);
+	err = PTR_ERR(sym);
+	if (IS_ERR(sym))
+		goto out;
+
+	err = vfsub_symlink(h_dir, h_path, sym);
+
+out:
+	do_delayed_call(&done);
+	return err;
+}
+
+/*
+ * regardless 'acl' option, reset all ACL.
+ * All ACL will be copied up later from the original entry on the lower branch.
+ */
+static int au_reset_acl(struct inode *h_dir, struct path *h_path, umode_t mode)
+{
+	int err;
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+	struct user_namespace *h_userns;
+
+	h_userns = mnt_user_ns(h_path->mnt);
+	h_dentry = h_path->dentry;
+	h_inode = d_inode(h_dentry);
+	/* forget_all_cached_acls(h_inode)); */
+	err = vfsub_removexattr(h_userns, h_dentry, XATTR_NAME_POSIX_ACL_ACCESS);
+	AuTraceErr(err);
+	if (err == -EOPNOTSUPP)
+		err = 0;
+	if (!err)
+		err = vfsub_acl_chmod(h_userns, h_inode, mode);
+
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_do_cpup_dir(struct au_cp_generic *cpg, struct dentry *dst_parent,
+			  struct inode *h_dir, struct path *h_path)
+{
+	int err;
+	struct inode *dir, *inode;
+	struct user_namespace *h_userns;
+
+	h_userns = mnt_user_ns(h_path->mnt);
+	err = vfsub_removexattr(h_userns, h_path->dentry,
+				XATTR_NAME_POSIX_ACL_DEFAULT);
+	AuTraceErr(err);
+	if (err == -EOPNOTSUPP)
+		err = 0;
+	if (unlikely(err))
+		goto out;
+
+	/*
+	 * strange behaviour from the users view,
+	 * particularly setattr case
+	 */
+	dir = d_inode(dst_parent);
+	if (au_ibtop(dir) == cpg->bdst)
+		au_cpup_attr_nlink(dir, /*force*/1);
+	inode = d_inode(cpg->dentry);
+	au_cpup_attr_nlink(inode, /*force*/1);
+
+out:
+	return err;
+}
+
+static noinline_for_stack
+int cpup_entry(struct au_cp_generic *cpg, struct dentry *dst_parent,
+	       struct au_cpup_reg_attr *h_src_attr)
+{
+	int err;
+	umode_t mode;
+	unsigned int mnt_flags;
+	unsigned char isdir, isreg, force;
+	const unsigned char do_dt = !!au_ftest_cpup(cpg->flags, DTIME);
+	struct au_dtime dt;
+	struct path h_path;
+	struct dentry *h_src, *h_dst, *h_parent;
+	struct inode *h_inode, *h_dir;
+	struct super_block *sb;
+
+	/* bsrc branch can be ro/rw. */
+	h_src = au_h_dptr(cpg->dentry, cpg->bsrc);
+	h_inode = d_inode(h_src);
+	AuDebugOn(h_inode != au_h_iptr(d_inode(cpg->dentry), cpg->bsrc));
+
+	/* try stopping to be referenced while we are creating */
+	h_dst = au_h_dptr(cpg->dentry, cpg->bdst);
+	if (au_ftest_cpup(cpg->flags, RENAME))
+		AuDebugOn(strncmp(h_dst->d_name.name, AUFS_WH_PFX,
+				  AUFS_WH_PFX_LEN));
+	h_parent = h_dst->d_parent; /* dir inode is locked */
+	h_dir = d_inode(h_parent);
+	IMustLock(h_dir);
+	AuDebugOn(h_parent != h_dst->d_parent);
+
+	sb = cpg->dentry->d_sb;
+	h_path.mnt = au_sbr_mnt(sb, cpg->bdst);
+	if (do_dt) {
+		h_path.dentry = h_parent;
+		au_dtime_store(&dt, dst_parent, &h_path);
+	}
+	h_path.dentry = h_dst;
+
+	isreg = 0;
+	isdir = 0;
+	mode = h_inode->i_mode;
+	switch (mode & S_IFMT) {
+	case S_IFREG:
+		isreg = 1;
+		err = vfsub_create(h_dir, &h_path, 0600, /*want_excl*/true);
+		if (!err)
+			err = au_do_cpup_regular(cpg, h_src_attr);
+		break;
+	case S_IFDIR:
+		isdir = 1;
+		err = vfsub_mkdir(h_dir, &h_path, mode);
+		if (!err)
+			err = au_do_cpup_dir(cpg, dst_parent, h_dir, &h_path);
+		break;
+	case S_IFLNK:
+		err = au_do_cpup_symlink(&h_path, h_src, h_dir);
+		break;
+	case S_IFCHR:
+	case S_IFBLK:
+		AuDebugOn(!capable(CAP_MKNOD));
+		fallthrough;
+	case S_IFIFO:
+	case S_IFSOCK:
+		err = vfsub_mknod(h_dir, &h_path, mode, h_inode->i_rdev);
+		break;
+	default:
+		AuIOErr("Unknown inode type 0%o\n", mode);
+		err = -EIO;
+	}
+	if (!err)
+		err = au_reset_acl(h_dir, &h_path, mode);
+
+	mnt_flags = au_mntflags(sb);
+	if (!au_opt_test(mnt_flags, UDBA_NONE)
+	    && !isdir
+	    && au_opt_test(mnt_flags, XINO)
+	    && (h_inode->i_nlink == 1
+		|| (h_inode->i_state & I_LINKABLE))
+	    /* todo: unnecessary? */
+	    /* && d_inode(cpg->dentry)->i_nlink == 1 */
+	    && cpg->bdst < cpg->bsrc
+	    && !au_ftest_cpup(cpg->flags, KEEPLINO))
+		au_xino_write(sb, cpg->bsrc, h_inode->i_ino, /*ino*/0);
+		/* ignore this error */
+
+	if (!err) {
+		force = 0;
+		if (isreg) {
+			force = !!cpg->len;
+			if (cpg->len == -1)
+				force = !!i_size_read(h_inode);
+		}
+		au_fhsm_wrote(sb, cpg->bdst, force);
+	}
+
+	if (do_dt)
+		au_dtime_revert(&dt);
+	return err;
+}
+
+static int au_do_ren_after_cpup(struct au_cp_generic *cpg, struct path *h_path)
+{
+	int err;
+	struct dentry *dentry, *h_dentry, *h_parent, *parent;
+	struct path h_ppath;
+	struct inode *h_dir;
+	aufs_bindex_t bdst;
+
+	dentry = cpg->dentry;
+	bdst = cpg->bdst;
+	h_ppath.mnt = au_sbr_mnt(dentry->d_sb, bdst);
+	h_dentry = au_h_dptr(dentry, bdst);
+	if (!au_ftest_cpup(cpg->flags, OVERWRITE)) {
+		dget(h_dentry);
+		au_set_h_dptr(dentry, bdst, NULL);
+		err = au_lkup_neg(dentry, bdst, /*wh*/0);
+		if (!err)
+			h_path->dentry = dget(au_h_dptr(dentry, bdst));
+		au_set_h_dptr(dentry, bdst, h_dentry);
+	} else {
+		err = 0;
+		parent = dget_parent(dentry);
+		h_ppath.dentry = au_h_dptr(parent, bdst);
+		dput(parent);
+		h_path->dentry = vfsub_lkup_one(&dentry->d_name, &h_ppath);
+		if (IS_ERR(h_path->dentry))
+			err = PTR_ERR(h_path->dentry);
+	}
+	if (unlikely(err))
+		goto out;
+
+	h_parent = h_dentry->d_parent; /* dir inode is locked */
+	h_dir = d_inode(h_parent);
+	IMustLock(h_dir);
+	AuDbg("%pd %pd\n", h_dentry, h_path->dentry);
+	/* no delegation since it is just created */
+	err = vfsub_rename(h_dir, h_dentry, h_dir, h_path, /*delegated*/NULL,
+			   /*flags*/0);
+	dput(h_path->dentry);
+
+out:
+	return err;
+}
+
+/*
+ * copyup the @dentry from @bsrc to @bdst.
+ * the caller must set the both of lower dentries.
+ * @len is for truncating when it is -1 copyup the entire file.
+ * in link/rename cases, @dst_parent may be different from the real one.
+ * basic->bsrc can be larger than basic->bdst.
+ * aufs doesn't touch the credential so
+ * security_inode_copy_up{,_xattr}() are unnecessary.
+ */
+static int au_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent)
+{
+	int err, rerr;
+	aufs_bindex_t old_ibtop;
+	unsigned char isdir, plink;
+	struct dentry *h_src, *h_dst, *h_parent;
+	struct inode *dst_inode, *h_dir, *inode, *delegated, *src_inode;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct path h_src_path;
+	/* to reduce stack size */
+	struct {
+		struct au_dtime dt;
+		struct path h_path;
+		struct au_cpup_reg_attr h_src_attr;
+	} *a;
+
+	err = -ENOMEM;
+	a = kmalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+	a->h_src_attr.valid = 0;
+
+	sb = cpg->dentry->d_sb;
+	br = au_sbr(sb, cpg->bdst);
+	a->h_path.mnt = au_br_mnt(br);
+	h_dst = au_h_dptr(cpg->dentry, cpg->bdst);
+	h_parent = h_dst->d_parent; /* dir inode is locked */
+	h_dir = d_inode(h_parent);
+	IMustLock(h_dir);
+
+	h_src = au_h_dptr(cpg->dentry, cpg->bsrc);
+	inode = d_inode(cpg->dentry);
+
+	if (!dst_parent)
+		dst_parent = dget_parent(cpg->dentry);
+	else
+		dget(dst_parent);
+
+	plink = !!au_opt_test(au_mntflags(sb), PLINK);
+	dst_inode = au_h_iptr(inode, cpg->bdst);
+	if (dst_inode) {
+		if (unlikely(!plink)) {
+			err = -EIO;
+			AuIOErr("hi%lu(i%lu) exists on b%d "
+				"but plink is disabled\n",
+				dst_inode->i_ino, inode->i_ino, cpg->bdst);
+			goto out_parent;
+		}
+
+		if (dst_inode->i_nlink) {
+			const int do_dt = au_ftest_cpup(cpg->flags, DTIME);
+
+			h_src = au_plink_lkup(inode, cpg->bdst);
+			err = PTR_ERR(h_src);
+			if (IS_ERR(h_src))
+				goto out_parent;
+			if (unlikely(d_is_negative(h_src))) {
+				err = -EIO;
+				AuIOErr("i%lu exists on b%d "
+					"but not pseudo-linked\n",
+					inode->i_ino, cpg->bdst);
+				dput(h_src);
+				goto out_parent;
+			}
+
+			if (do_dt) {
+				a->h_path.dentry = h_parent;
+				au_dtime_store(&a->dt, dst_parent, &a->h_path);
+			}
+
+			a->h_path.dentry = h_dst;
+			delegated = NULL;
+			err = vfsub_link(h_src, h_dir, &a->h_path, &delegated);
+			if (!err && au_ftest_cpup(cpg->flags, RENAME))
+				err = au_do_ren_after_cpup(cpg, &a->h_path);
+			if (do_dt)
+				au_dtime_revert(&a->dt);
+			if (unlikely(err == -EWOULDBLOCK)) {
+				pr_warn("cannot retry for NFSv4 delegation"
+					" for an internal link\n");
+				iput(delegated);
+			}
+			dput(h_src);
+			goto out_parent;
+		} else
+			/* todo: cpup_wh_file? */
+			/* udba work */
+			au_update_ibrange(inode, /*do_put_zero*/1);
+	}
+
+	isdir = S_ISDIR(inode->i_mode);
+	old_ibtop = au_ibtop(inode);
+	err = cpup_entry(cpg, dst_parent, &a->h_src_attr);
+	if (unlikely(err))
+		goto out_rev;
+	dst_inode = d_inode(h_dst);
+	inode_lock_nested(dst_inode, AuLsc_I_CHILD2);
+	/* todo: necessary? */
+	/* au_pin_hdir_unlock(cpg->pin); */
+
+	h_src_path.dentry = h_src;
+	h_src_path.mnt = au_sbr_mnt(sb, cpg->bsrc);
+	err = cpup_iattr(cpg->dentry, cpg->bdst, &h_src_path, &a->h_src_attr);
+	if (unlikely(err)) {
+		/* todo: necessary? */
+		/* au_pin_hdir_relock(cpg->pin); */ /* ignore an error */
+		inode_unlock(dst_inode);
+		goto out_rev;
+	}
+
+	if (cpg->bdst < old_ibtop) {
+		if (S_ISREG(inode->i_mode)) {
+			err = au_dy_iaop(inode, cpg->bdst, dst_inode);
+			if (unlikely(err)) {
+				/* ignore an error */
+				/* au_pin_hdir_relock(cpg->pin); */
+				inode_unlock(dst_inode);
+				goto out_rev;
+			}
+		}
+		au_set_ibtop(inode, cpg->bdst);
+	} else
+		au_set_ibbot(inode, cpg->bdst);
+	au_set_h_iptr(inode, cpg->bdst, au_igrab(dst_inode),
+		      au_hi_flags(inode, isdir));
+
+	/* todo: necessary? */
+	/* err = au_pin_hdir_relock(cpg->pin); */
+	inode_unlock(dst_inode);
+	if (unlikely(err))
+		goto out_rev;
+
+	src_inode = d_inode(h_src);
+	if (!isdir
+	    && (src_inode->i_nlink > 1
+		|| src_inode->i_state & I_LINKABLE)
+	    && plink)
+		au_plink_append(inode, cpg->bdst, h_dst);
+
+	if (au_ftest_cpup(cpg->flags, RENAME)) {
+		a->h_path.dentry = h_dst;
+		err = au_do_ren_after_cpup(cpg, &a->h_path);
+	}
+	if (!err)
+		goto out_parent; /* success */
+
+	/* revert */
+out_rev:
+	a->h_path.dentry = h_parent;
+	au_dtime_store(&a->dt, dst_parent, &a->h_path);
+	a->h_path.dentry = h_dst;
+	rerr = 0;
+	if (d_is_positive(h_dst)) {
+		if (!isdir) {
+			/* no delegation since it is just created */
+			rerr = vfsub_unlink(h_dir, &a->h_path,
+					    /*delegated*/NULL, /*force*/0);
+		} else
+			rerr = vfsub_rmdir(h_dir, &a->h_path);
+	}
+	au_dtime_revert(&a->dt);
+	if (rerr) {
+		AuIOErr("failed removing broken entry(%d, %d)\n", err, rerr);
+		err = -EIO;
+	}
+out_parent:
+	dput(dst_parent);
+	au_kfree_rcu(a);
+out:
+	return err;
+}
+
+#if 0 /* reserved */
+struct au_cpup_single_args {
+	int *errp;
+	struct au_cp_generic *cpg;
+	struct dentry *dst_parent;
+};
+
+static void au_call_cpup_single(void *args)
+{
+	struct au_cpup_single_args *a = args;
+
+	au_pin_hdir_acquire_nest(a->cpg->pin);
+	*a->errp = au_cpup_single(a->cpg, a->dst_parent);
+	au_pin_hdir_release(a->cpg->pin);
+}
+#endif
+
+/*
+ * prevent SIGXFSZ in copy-up.
+ * testing CAP_MKNOD is for generic fs,
+ * but CAP_FSETID is for xfs only, currently.
+ */
+static int au_cpup_sio_test(struct au_pin *pin, umode_t mode)
+{
+	int do_sio;
+	struct super_block *sb;
+	struct inode *h_dir;
+
+	do_sio = 0;
+	sb = au_pinned_parent(pin)->d_sb;
+	if (!au_wkq_test()
+	    && (!au_sbi(sb)->si_plink_maint_pid
+		|| au_plink_maint(sb, AuLock_NOPLM))) {
+		switch (mode & S_IFMT) {
+		case S_IFREG:
+			/* no condition about RLIMIT_FSIZE and the file size */
+			do_sio = 1;
+			break;
+		case S_IFCHR:
+		case S_IFBLK:
+			do_sio = !capable(CAP_MKNOD);
+			break;
+		}
+		if (!do_sio)
+			do_sio = ((mode & (S_ISUID | S_ISGID))
+				  && !capable(CAP_FSETID));
+		/* this workaround may be removed in the future */
+		if (!do_sio) {
+			h_dir = au_pinned_h_dir(pin);
+			do_sio = h_dir->i_mode & S_ISVTX;
+		}
+	}
+
+	return do_sio;
+}
+
+#if 0 /* reserved */
+int au_sio_cpup_single(struct au_cp_generic *cpg, struct dentry *dst_parent)
+{
+	int err, wkq_err;
+	struct dentry *h_dentry;
+
+	h_dentry = au_h_dptr(cpg->dentry, cpg->bsrc);
+	if (!au_cpup_sio_test(pin, d_inode(h_dentry)->i_mode))
+		err = au_cpup_single(cpg, dst_parent);
+	else {
+		struct au_cpup_single_args args = {
+			.errp		= &err,
+			.cpg		= cpg,
+			.dst_parent	= dst_parent
+		};
+		wkq_err = au_wkq_wait(au_call_cpup_single, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	}
+
+	return err;
+}
+#endif
+
+/*
+ * copyup the @dentry from the first active lower branch to @bdst,
+ * using au_cpup_single().
+ */
+static int au_cpup_simple(struct au_cp_generic *cpg)
+{
+	int err;
+	unsigned int flags_orig;
+	struct dentry *dentry;
+
+	AuDebugOn(cpg->bsrc < 0);
+
+	dentry = cpg->dentry;
+	DiMustWriteLock(dentry);
+
+	err = au_lkup_neg(dentry, cpg->bdst, /*wh*/1);
+	if (!err) {
+		flags_orig = cpg->flags;
+		au_fset_cpup(cpg->flags, RENAME);
+		err = au_cpup_single(cpg, NULL);
+		cpg->flags = flags_orig;
+		if (!err)
+			return 0; /* success */
+
+		/* revert */
+		au_set_h_dptr(dentry, cpg->bdst, NULL);
+		au_set_dbtop(dentry, cpg->bsrc);
+	}
+
+	return err;
+}
+
+struct au_cpup_simple_args {
+	int *errp;
+	struct au_cp_generic *cpg;
+};
+
+static void au_call_cpup_simple(void *args)
+{
+	struct au_cpup_simple_args *a = args;
+
+	au_pin_hdir_acquire_nest(a->cpg->pin);
+	*a->errp = au_cpup_simple(a->cpg);
+	au_pin_hdir_release(a->cpg->pin);
+}
+
+static int au_do_sio_cpup_simple(struct au_cp_generic *cpg)
+{
+	int err, wkq_err;
+	struct dentry *dentry, *parent;
+	struct file *h_file;
+	struct inode *h_dir;
+	struct user_namespace *h_userns;
+
+	dentry = cpg->dentry;
+	h_file = NULL;
+	if (au_ftest_cpup(cpg->flags, HOPEN)) {
+		AuDebugOn(cpg->bsrc < 0);
+		h_file = au_h_open_pre(dentry, cpg->bsrc, /*force_wr*/0);
+		err = PTR_ERR(h_file);
+		if (IS_ERR(h_file))
+			goto out;
+	}
+
+	parent = dget_parent(dentry);
+	h_dir = au_h_iptr(d_inode(parent), cpg->bdst);
+	h_userns = au_sbr_userns(dentry->d_sb, cpg->bdst);
+	if (!au_test_h_perm_sio(h_userns, h_dir, MAY_EXEC | MAY_WRITE)
+	    && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode))
+		err = au_cpup_simple(cpg);
+	else {
+		struct au_cpup_simple_args args = {
+			.errp		= &err,
+			.cpg		= cpg
+		};
+		wkq_err = au_wkq_wait(au_call_cpup_simple, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	}
+
+	dput(parent);
+	if (h_file)
+		au_h_open_post(dentry, cpg->bsrc, h_file);
+
+out:
+	return err;
+}
+
+int au_sio_cpup_simple(struct au_cp_generic *cpg)
+{
+	aufs_bindex_t bsrc, bbot;
+	struct dentry *dentry, *h_dentry;
+
+	if (cpg->bsrc < 0) {
+		dentry = cpg->dentry;
+		bbot = au_dbbot(dentry);
+		for (bsrc = cpg->bdst + 1; bsrc <= bbot; bsrc++) {
+			h_dentry = au_h_dptr(dentry, bsrc);
+			if (h_dentry) {
+				AuDebugOn(d_is_negative(h_dentry));
+				break;
+			}
+		}
+		AuDebugOn(bsrc > bbot);
+		cpg->bsrc = bsrc;
+	}
+	AuDebugOn(cpg->bsrc <= cpg->bdst);
+	return au_do_sio_cpup_simple(cpg);
+}
+
+int au_sio_cpdown_simple(struct au_cp_generic *cpg)
+{
+	AuDebugOn(cpg->bdst <= cpg->bsrc);
+	return au_do_sio_cpup_simple(cpg);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * copyup the deleted file for writing.
+ */
+static int au_do_cpup_wh(struct au_cp_generic *cpg, struct dentry *wh_dentry,
+			 struct file *file)
+{
+	int err;
+	unsigned int flags_orig;
+	aufs_bindex_t bsrc_orig;
+	struct au_dinfo *dinfo;
+	struct {
+		struct au_hdentry *hd;
+		struct dentry *h_dentry;
+	} hdst, hsrc;
+
+	dinfo = au_di(cpg->dentry);
+	AuRwMustWriteLock(&dinfo->di_rwsem);
+
+	bsrc_orig = cpg->bsrc;
+	cpg->bsrc = dinfo->di_btop;
+	hdst.hd = au_hdentry(dinfo, cpg->bdst);
+	hdst.h_dentry = hdst.hd->hd_dentry;
+	hdst.hd->hd_dentry = wh_dentry;
+	dinfo->di_btop = cpg->bdst;
+
+	hsrc.h_dentry = NULL;
+	if (file) {
+		hsrc.hd = au_hdentry(dinfo, cpg->bsrc);
+		hsrc.h_dentry = hsrc.hd->hd_dentry;
+		hsrc.hd->hd_dentry = au_hf_top(file)->f_path.dentry;
+	}
+	flags_orig = cpg->flags;
+	cpg->flags = !AuCpup_DTIME;
+	err = au_cpup_single(cpg, /*h_parent*/NULL);
+	cpg->flags = flags_orig;
+	if (file) {
+		if (!err)
+			err = au_reopen_nondir(file);
+		hsrc.hd->hd_dentry = hsrc.h_dentry;
+	}
+	hdst.hd->hd_dentry = hdst.h_dentry;
+	dinfo->di_btop = cpg->bsrc;
+	cpg->bsrc = bsrc_orig;
+
+	return err;
+}
+
+static int au_cpup_wh(struct au_cp_generic *cpg, struct file *file)
+{
+	int err;
+	aufs_bindex_t bdst;
+	struct au_dtime dt;
+	struct dentry *dentry, *parent, *h_parent, *wh_dentry;
+	struct au_branch *br;
+	struct path h_path;
+
+	dentry = cpg->dentry;
+	bdst = cpg->bdst;
+	br = au_sbr(dentry->d_sb, bdst);
+	parent = dget_parent(dentry);
+	h_parent = au_h_dptr(parent, bdst);
+	wh_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name);
+	err = PTR_ERR(wh_dentry);
+	if (IS_ERR(wh_dentry))
+		goto out;
+
+	h_path.dentry = h_parent;
+	h_path.mnt = au_br_mnt(br);
+	au_dtime_store(&dt, parent, &h_path);
+	err = au_do_cpup_wh(cpg, wh_dentry, file);
+	if (unlikely(err))
+		goto out_wh;
+
+	dget(wh_dentry);
+	h_path.dentry = wh_dentry;
+	if (!d_is_dir(wh_dentry)) {
+		/* no delegation since it is just created */
+		err = vfsub_unlink(d_inode(h_parent), &h_path,
+				   /*delegated*/NULL, /*force*/0);
+	} else
+		err = vfsub_rmdir(d_inode(h_parent), &h_path);
+	if (unlikely(err)) {
+		AuIOErr("failed remove copied-up tmp file %pd(%d)\n",
+			wh_dentry, err);
+		err = -EIO;
+	}
+	au_dtime_revert(&dt);
+	au_set_hi_wh(d_inode(dentry), bdst, wh_dentry);
+
+out_wh:
+	dput(wh_dentry);
+out:
+	dput(parent);
+	return err;
+}
+
+struct au_cpup_wh_args {
+	int *errp;
+	struct au_cp_generic *cpg;
+	struct file *file;
+};
+
+static void au_call_cpup_wh(void *args)
+{
+	struct au_cpup_wh_args *a = args;
+
+	au_pin_hdir_acquire_nest(a->cpg->pin);
+	*a->errp = au_cpup_wh(a->cpg, a->file);
+	au_pin_hdir_release(a->cpg->pin);
+}
+
+int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file)
+{
+	int err, wkq_err;
+	aufs_bindex_t bdst;
+	struct dentry *dentry, *parent, *h_orph, *h_parent;
+	struct inode *dir, *h_dir, *h_tmpdir;
+	struct au_wbr *wbr;
+	struct au_pin wh_pin, *pin_orig;
+	struct user_namespace *h_userns;
+
+	dentry = cpg->dentry;
+	bdst = cpg->bdst;
+	parent = dget_parent(dentry);
+	dir = d_inode(parent);
+	h_orph = NULL;
+	h_parent = NULL;
+	h_dir = au_igrab(au_h_iptr(dir, bdst));
+	h_tmpdir = h_dir;
+	pin_orig = NULL;
+	if (!h_dir->i_nlink) {
+		wbr = au_sbr(dentry->d_sb, bdst)->br_wbr;
+		h_orph = wbr->wbr_orph;
+
+		h_parent = dget(au_h_dptr(parent, bdst));
+		au_set_h_dptr(parent, bdst, dget(h_orph));
+		h_tmpdir = d_inode(h_orph);
+		au_set_h_iptr(dir, bdst, au_igrab(h_tmpdir), /*flags*/0);
+
+		inode_lock_nested(h_tmpdir, AuLsc_I_PARENT3);
+		/* todo: au_h_open_pre()? */
+
+		pin_orig = cpg->pin;
+		au_pin_init(&wh_pin, dentry, bdst, AuLsc_DI_PARENT,
+			    AuLsc_I_PARENT3, cpg->pin->udba, AuPin_DI_LOCKED);
+		cpg->pin = &wh_pin;
+	}
+
+	h_userns = au_sbr_userns(dentry->d_sb, bdst);
+	if (!au_test_h_perm_sio(h_userns, h_tmpdir, MAY_EXEC | MAY_WRITE)
+	    && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode))
+		err = au_cpup_wh(cpg, file);
+	else {
+		struct au_cpup_wh_args args = {
+			.errp	= &err,
+			.cpg	= cpg,
+			.file	= file
+		};
+		wkq_err = au_wkq_wait(au_call_cpup_wh, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	}
+
+	if (h_orph) {
+		inode_unlock(h_tmpdir);
+		/* todo: au_h_open_post()? */
+		au_set_h_iptr(dir, bdst, au_igrab(h_dir), /*flags*/0);
+		au_set_h_dptr(parent, bdst, h_parent);
+		AuDebugOn(!pin_orig);
+		cpg->pin = pin_orig;
+	}
+	iput(h_dir);
+	dput(parent);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * generic routine for both of copy-up and copy-down.
+ */
+/* cf. revalidate function in file.c */
+int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst,
+	       int (*cp)(struct dentry *dentry, aufs_bindex_t bdst,
+			 struct au_pin *pin,
+			 struct dentry *h_parent, void *arg),
+	       void *arg)
+{
+	int err;
+	struct au_pin pin;
+	struct dentry *d, *parent, *h_parent, *real_parent, *h_dentry;
+
+	err = 0;
+	parent = dget_parent(dentry);
+	if (IS_ROOT(parent))
+		goto out;
+
+	au_pin_init(&pin, dentry, bdst, AuLsc_DI_PARENT2, AuLsc_I_PARENT2,
+		    au_opt_udba(dentry->d_sb), AuPin_MNT_WRITE);
+
+	/* do not use au_dpage */
+	real_parent = parent;
+	while (1) {
+		dput(parent);
+		parent = dget_parent(dentry);
+		h_parent = au_h_dptr(parent, bdst);
+		if (h_parent)
+			goto out; /* success */
+
+		/* find top dir which is necessary to cpup */
+		do {
+			d = parent;
+			dput(parent);
+			parent = dget_parent(d);
+			di_read_lock_parent3(parent, !AuLock_IR);
+			h_parent = au_h_dptr(parent, bdst);
+			di_read_unlock(parent, !AuLock_IR);
+		} while (!h_parent);
+
+		if (d != real_parent)
+			di_write_lock_child3(d);
+
+		/* somebody else might create while we were sleeping */
+		h_dentry = au_h_dptr(d, bdst);
+		if (!h_dentry || d_is_negative(h_dentry)) {
+			if (h_dentry)
+				au_update_dbtop(d);
+
+			au_pin_set_dentry(&pin, d);
+			err = au_do_pin(&pin);
+			if (!err) {
+				err = cp(d, bdst, &pin, h_parent, arg);
+				au_unpin(&pin);
+			}
+		}
+
+		if (d != real_parent)
+			di_write_unlock(d);
+		if (unlikely(err))
+			break;
+	}
+
+out:
+	dput(parent);
+	return err;
+}
+
+static int au_cpup_dir(struct dentry *dentry, aufs_bindex_t bdst,
+		       struct au_pin *pin,
+		       struct dentry *h_parent __maybe_unused,
+		       void *arg __maybe_unused)
+{
+	struct au_cp_generic cpg = {
+		.dentry	= dentry,
+		.bdst	= bdst,
+		.bsrc	= -1,
+		.len	= 0,
+		.pin	= pin,
+		.flags	= AuCpup_DTIME
+	};
+	return au_sio_cpup_simple(&cpg);
+}
+
+int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst)
+{
+	return au_cp_dirs(dentry, bdst, au_cpup_dir, NULL);
+}
+
+int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst)
+{
+	int err;
+	struct dentry *parent;
+	struct inode *dir;
+
+	parent = dget_parent(dentry);
+	dir = d_inode(parent);
+	err = 0;
+	if (au_h_iptr(dir, bdst))
+		goto out;
+
+	di_read_unlock(parent, AuLock_IR);
+	di_write_lock_parent(parent);
+	/* someone else might change our inode while we were sleeping */
+	if (!au_h_iptr(dir, bdst))
+		err = au_cpup_dirs(dentry, bdst);
+	di_downgrade_lock(parent, AuLock_IR);
+
+out:
+	dput(parent);
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/cpup.h b/fs/aufs/cpup.h
--- a/fs/aufs/cpup.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/cpup.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * copy-up/down functions
+ */
+
+#ifndef __AUFS_CPUP_H__
+#define __AUFS_CPUP_H__
+
+#ifdef __KERNEL__
+
+#include <linux/path.h>
+
+struct inode;
+struct file;
+struct au_pin;
+
+void au_cpup_attr_flags(struct inode *dst, unsigned int iflags);
+void au_cpup_attr_timesizes(struct inode *inode);
+void au_cpup_attr_nlink(struct inode *inode, int force);
+void au_cpup_attr_changeable(struct inode *inode);
+void au_cpup_igen(struct inode *inode, struct inode *h_inode);
+void au_cpup_attr_all(struct inode *inode, int force);
+
+/* ---------------------------------------------------------------------- */
+
+struct au_cp_generic {
+	struct dentry	*dentry;
+	aufs_bindex_t	bdst, bsrc;
+	loff_t		len;
+	struct au_pin	*pin;
+	unsigned int	flags;
+};
+
+/* cpup flags */
+#define AuCpup_DTIME		1		/* do dtime_store/revert */
+#define AuCpup_KEEPLINO		(1 << 1)	/* do not clear the lower xino,
+						   for link(2) */
+#define AuCpup_RENAME		(1 << 2)	/* rename after cpup */
+#define AuCpup_HOPEN		(1 << 3)	/* call h_open_pre/post() in
+						   cpup */
+#define AuCpup_OVERWRITE	(1 << 4)	/* allow overwriting the
+						   existing entry */
+#define AuCpup_RWDST		(1 << 5)	/* force write target even if
+						   the branch is marked as RO */
+
+#ifndef CONFIG_AUFS_BR_HFSPLUS
+#undef AuCpup_HOPEN
+#define AuCpup_HOPEN		0
+#endif
+
+#define au_ftest_cpup(flags, name)	((flags) & AuCpup_##name)
+#define au_fset_cpup(flags, name) \
+	do { (flags) |= AuCpup_##name; } while (0)
+#define au_fclr_cpup(flags, name) \
+	do { (flags) &= ~AuCpup_##name; } while (0)
+
+int au_copy_file(struct file *dst, struct file *src, loff_t len);
+int au_sio_cpup_simple(struct au_cp_generic *cpg);
+int au_sio_cpdown_simple(struct au_cp_generic *cpg);
+int au_sio_cpup_wh(struct au_cp_generic *cpg, struct file *file);
+
+int au_cp_dirs(struct dentry *dentry, aufs_bindex_t bdst,
+	       int (*cp)(struct dentry *dentry, aufs_bindex_t bdst,
+			 struct au_pin *pin,
+			 struct dentry *h_parent, void *arg),
+	       void *arg);
+int au_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
+int au_test_and_cpup_dirs(struct dentry *dentry, aufs_bindex_t bdst);
+
+/* ---------------------------------------------------------------------- */
+
+/* keep timestamps when copyup */
+struct au_dtime {
+	struct dentry *dt_dentry;
+	struct path dt_h_path;
+	struct timespec64 dt_atime, dt_mtime;
+};
+void au_dtime_store(struct au_dtime *dt, struct dentry *dentry,
+		    struct path *h_path);
+void au_dtime_revert(struct au_dtime *dt);
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_CPUP_H__ */
diff -Naur --no-dereference a/fs/aufs/dbgaufs.c b/fs/aufs/dbgaufs.c
--- a/fs/aufs/dbgaufs.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dbgaufs.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,526 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * debugfs interface
+ */
+
+#include <linux/debugfs.h>
+#include "aufs.h"
+
+#ifndef CONFIG_SYSFS
+#error DEBUG_FS depends upon SYSFS
+#endif
+
+static struct dentry *dbgaufs;
+static const mode_t dbgaufs_mode = 0444;
+
+/* 20 is max digits length of ulong 64 */
+struct dbgaufs_arg {
+	int n;
+	char a[20 * 4];
+};
+
+/*
+ * common function for all XINO files
+ */
+static int dbgaufs_xi_release(struct inode *inode __maybe_unused,
+			      struct file *file)
+{
+	void *p;
+
+	p = file->private_data;
+	if (p) {
+		/* this is struct dbgaufs_arg */
+		AuDebugOn(!au_kfree_sz_test(p));
+		au_kfree_do_rcu(p);
+	}
+	return 0;
+}
+
+static int dbgaufs_xi_open(struct file *xf, struct file *file, int do_fcnt,
+			   int cnt)
+{
+	int err;
+	struct kstat st;
+	struct dbgaufs_arg *p;
+
+	err = -ENOMEM;
+	p = kmalloc(sizeof(*p), GFP_NOFS);
+	if (unlikely(!p))
+		goto out;
+
+	err = 0;
+	p->n = 0;
+	file->private_data = p;
+	if (!xf)
+		goto out;
+
+	err = vfsub_getattr(&xf->f_path, &st);
+	if (!err) {
+		if (do_fcnt)
+			p->n = snprintf
+				(p->a, sizeof(p->a), "%d, %llux%u %lld\n",
+				 cnt, st.blocks, st.blksize,
+				 (long long)st.size);
+		else
+			p->n = snprintf(p->a, sizeof(p->a), "%llux%u %lld\n",
+					st.blocks, st.blksize,
+					(long long)st.size);
+		AuDebugOn(p->n >= sizeof(p->a));
+	} else {
+		p->n = snprintf(p->a, sizeof(p->a), "err %d\n", err);
+		err = 0;
+	}
+
+out:
+	return err;
+}
+
+static ssize_t dbgaufs_xi_read(struct file *file, char __user *buf,
+			       size_t count, loff_t *ppos)
+{
+	struct dbgaufs_arg *p;
+
+	p = file->private_data;
+	return simple_read_from_buffer(buf, count, ppos, p->a, p->n);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct dbgaufs_plink_arg {
+	int n;
+	char a[];
+};
+
+static int dbgaufs_plink_release(struct inode *inode __maybe_unused,
+				 struct file *file)
+{
+	free_page((unsigned long)file->private_data);
+	return 0;
+}
+
+static int dbgaufs_plink_open(struct inode *inode, struct file *file)
+{
+	int err, i, limit;
+	unsigned long n, sum;
+	struct dbgaufs_plink_arg *p;
+	struct au_sbinfo *sbinfo;
+	struct super_block *sb;
+	struct hlist_bl_head *hbl;
+
+	err = -ENOMEM;
+	p = (void *)get_zeroed_page(GFP_NOFS);
+	if (unlikely(!p))
+		goto out;
+
+	err = -EFBIG;
+	sbinfo = inode->i_private;
+	sb = sbinfo->si_sb;
+	si_noflush_read_lock(sb);
+	if (au_opt_test(au_mntflags(sb), PLINK)) {
+		limit = PAGE_SIZE - sizeof(p->n);
+
+		/* the number of buckets */
+		n = snprintf(p->a + p->n, limit, "%d\n", AuPlink_NHASH);
+		p->n += n;
+		limit -= n;
+
+		sum = 0;
+		for (i = 0, hbl = sbinfo->si_plink; i < AuPlink_NHASH;
+		     i++, hbl++) {
+			n = au_hbl_count(hbl);
+			sum += n;
+
+			n = snprintf(p->a + p->n, limit, "%lu ", n);
+			p->n += n;
+			limit -= n;
+			if (unlikely(limit <= 0))
+				goto out_free;
+		}
+		p->a[p->n - 1] = '\n';
+
+		/* the sum of plinks */
+		n = snprintf(p->a + p->n, limit, "%lu\n", sum);
+		p->n += n;
+		limit -= n;
+		if (unlikely(limit <= 0))
+			goto out_free;
+	} else {
+#define str "1\n0\n0\n"
+		p->n = sizeof(str) - 1;
+		strcpy(p->a, str);
+#undef str
+	}
+	si_read_unlock(sb);
+
+	err = 0;
+	file->private_data = p;
+	goto out; /* success */
+
+out_free:
+	free_page((unsigned long)p);
+out:
+	return err;
+}
+
+static ssize_t dbgaufs_plink_read(struct file *file, char __user *buf,
+				  size_t count, loff_t *ppos)
+{
+	struct dbgaufs_plink_arg *p;
+
+	p = file->private_data;
+	return simple_read_from_buffer(buf, count, ppos, p->a, p->n);
+}
+
+static const struct file_operations dbgaufs_plink_fop = {
+	.owner		= THIS_MODULE,
+	.open		= dbgaufs_plink_open,
+	.release	= dbgaufs_plink_release,
+	.read		= dbgaufs_plink_read
+};
+
+/* ---------------------------------------------------------------------- */
+
+static int dbgaufs_xib_open(struct inode *inode, struct file *file)
+{
+	int err;
+	struct au_sbinfo *sbinfo;
+	struct super_block *sb;
+
+	sbinfo = inode->i_private;
+	sb = sbinfo->si_sb;
+	si_noflush_read_lock(sb);
+	err = dbgaufs_xi_open(sbinfo->si_xib, file, /*do_fcnt*/0, /*cnt*/0);
+	si_read_unlock(sb);
+	return err;
+}
+
+static const struct file_operations dbgaufs_xib_fop = {
+	.owner		= THIS_MODULE,
+	.open		= dbgaufs_xib_open,
+	.release	= dbgaufs_xi_release,
+	.read		= dbgaufs_xi_read
+};
+
+/* ---------------------------------------------------------------------- */
+
+#define DbgaufsXi_PREFIX "xi"
+
+static int dbgaufs_xino_open(struct inode *inode, struct file *file)
+{
+	int err, idx;
+	long l;
+	aufs_bindex_t bindex;
+	char *p, a[sizeof(DbgaufsXi_PREFIX) + 8];
+	struct au_sbinfo *sbinfo;
+	struct super_block *sb;
+	struct au_xino *xi;
+	struct file *xf;
+	struct qstr *name;
+	struct au_branch *br;
+
+	err = -ENOENT;
+	name = &file->f_path.dentry->d_name;
+	if (unlikely(name->len < sizeof(DbgaufsXi_PREFIX)
+		     || memcmp(name->name, DbgaufsXi_PREFIX,
+			       sizeof(DbgaufsXi_PREFIX) - 1)))
+		goto out;
+
+	AuDebugOn(name->len >= sizeof(a));
+	memcpy(a, name->name, name->len);
+	a[name->len] = '\0';
+	p = strchr(a, '-');
+	if (p)
+		*p = '\0';
+	err = kstrtol(a + sizeof(DbgaufsXi_PREFIX) - 1, 10, &l);
+	if (unlikely(err))
+		goto out;
+	bindex = l;
+	idx = 0;
+	if (p) {
+		err = kstrtol(p + 1, 10, &l);
+		if (unlikely(err))
+			goto out;
+		idx = l;
+	}
+
+	err = -ENOENT;
+	sbinfo = inode->i_private;
+	sb = sbinfo->si_sb;
+	si_noflush_read_lock(sb);
+	if (unlikely(bindex < 0 || bindex > au_sbbot(sb)))
+		goto out_si;
+	br = au_sbr(sb, bindex);
+	xi = br->br_xino;
+	if (unlikely(idx >= xi->xi_nfile))
+		goto out_si;
+	xf = au_xino_file(xi, idx);
+	if (xf)
+		err = dbgaufs_xi_open(xf, file, /*do_fcnt*/1,
+				      au_xino_count(br));
+
+out_si:
+	si_read_unlock(sb);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static const struct file_operations dbgaufs_xino_fop = {
+	.owner		= THIS_MODULE,
+	.open		= dbgaufs_xino_open,
+	.release	= dbgaufs_xi_release,
+	.read		= dbgaufs_xi_read
+};
+
+void dbgaufs_xino_del(struct au_branch *br)
+{
+	struct dentry *dbgaufs;
+
+	dbgaufs = br->br_dbgaufs;
+	if (!dbgaufs)
+		return;
+
+	br->br_dbgaufs = NULL;
+	/* debugfs acquires the parent i_mutex */
+	lockdep_off();
+	debugfs_remove(dbgaufs);
+	lockdep_on();
+}
+
+void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex)
+{
+	aufs_bindex_t bbot;
+	struct au_branch *br;
+
+	if (!au_sbi(sb)->si_dbgaufs)
+		return;
+
+	bbot = au_sbbot(sb);
+	for (; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		dbgaufs_xino_del(br);
+	}
+}
+
+static void dbgaufs_br_do_add(struct super_block *sb, aufs_bindex_t bindex,
+			      unsigned int idx, struct dentry *parent,
+			      struct au_sbinfo *sbinfo)
+{
+	struct au_branch *br;
+	struct dentry *d;
+	/* "xi" bindex(5) "-" idx(2) NULL */
+	char name[sizeof(DbgaufsXi_PREFIX) + 8];
+
+	if (!idx)
+		snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d", bindex);
+	else
+		snprintf(name, sizeof(name), DbgaufsXi_PREFIX "%d-%u",
+			 bindex, idx);
+	br = au_sbr(sb, bindex);
+	if (br->br_dbgaufs) {
+		struct qstr qstr = QSTR_INIT(name, strlen(name));
+
+		if (!au_qstreq(&br->br_dbgaufs->d_name, &qstr)) {
+			/* debugfs acquires the parent i_mutex */
+			lockdep_off();
+			d = debugfs_rename(parent, br->br_dbgaufs, parent,
+					   name);
+			lockdep_on();
+			if (unlikely(!d))
+				pr_warn("failed renaming %pd/%s, ignored.\n",
+					parent, name);
+		}
+	} else {
+		lockdep_off();
+		br->br_dbgaufs = debugfs_create_file(name, dbgaufs_mode, parent,
+						     sbinfo, &dbgaufs_xino_fop);
+		lockdep_on();
+		if (unlikely(!br->br_dbgaufs))
+			pr_warn("failed creating %pd/%s, ignored.\n",
+				parent, name);
+	}
+}
+
+static void dbgaufs_br_add(struct super_block *sb, aufs_bindex_t bindex,
+			   struct dentry *parent, struct au_sbinfo *sbinfo)
+{
+	struct au_branch *br;
+	struct au_xino *xi;
+	unsigned int u;
+
+	br = au_sbr(sb, bindex);
+	xi = br->br_xino;
+	for (u = 0; u < xi->xi_nfile; u++)
+		dbgaufs_br_do_add(sb, bindex, u, parent, sbinfo);
+}
+
+void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex, int topdown)
+{
+	struct au_sbinfo *sbinfo;
+	struct dentry *parent;
+	aufs_bindex_t bbot;
+
+	if (!au_opt_test(au_mntflags(sb), XINO))
+		return;
+
+	sbinfo = au_sbi(sb);
+	parent = sbinfo->si_dbgaufs;
+	if (!parent)
+		return;
+
+	bbot = au_sbbot(sb);
+	if (topdown)
+		for (; bindex <= bbot; bindex++)
+			dbgaufs_br_add(sb, bindex, parent, sbinfo);
+	else
+		for (; bbot >= bindex; bbot--)
+			dbgaufs_br_add(sb, bbot, parent, sbinfo);
+}
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_EXPORT
+static int dbgaufs_xigen_open(struct inode *inode, struct file *file)
+{
+	int err;
+	struct au_sbinfo *sbinfo;
+	struct super_block *sb;
+
+	sbinfo = inode->i_private;
+	sb = sbinfo->si_sb;
+	si_noflush_read_lock(sb);
+	err = dbgaufs_xi_open(sbinfo->si_xigen, file, /*do_fcnt*/0, /*cnt*/0);
+	si_read_unlock(sb);
+	return err;
+}
+
+static const struct file_operations dbgaufs_xigen_fop = {
+	.owner		= THIS_MODULE,
+	.open		= dbgaufs_xigen_open,
+	.release	= dbgaufs_xi_release,
+	.read		= dbgaufs_xi_read
+};
+
+static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo)
+{
+	int err;
+
+	/*
+	 * This function is a dynamic '__init' function actually,
+	 * so the tiny check for si_rwsem is unnecessary.
+	 */
+	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
+
+	err = -EIO;
+	sbinfo->si_dbgaufs_xigen = debugfs_create_file
+		("xigen", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
+		 &dbgaufs_xigen_fop);
+	if (sbinfo->si_dbgaufs_xigen)
+		err = 0;
+
+	return err;
+}
+#else
+static int dbgaufs_xigen_init(struct au_sbinfo *sbinfo)
+{
+	return 0;
+}
+#endif /* CONFIG_AUFS_EXPORT */
+
+/* ---------------------------------------------------------------------- */
+
+void dbgaufs_si_fin(struct au_sbinfo *sbinfo)
+{
+	/*
+	 * This function is a dynamic '__fin' function actually,
+	 * so the tiny check for si_rwsem is unnecessary.
+	 */
+	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
+
+	debugfs_remove_recursive(sbinfo->si_dbgaufs);
+	sbinfo->si_dbgaufs = NULL;
+}
+
+int dbgaufs_si_init(struct au_sbinfo *sbinfo)
+{
+	int err;
+	char name[SysaufsSiNameLen];
+
+	/*
+	 * This function is a dynamic '__init' function actually,
+	 * so the tiny check for si_rwsem is unnecessary.
+	 */
+	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
+
+	err = -ENOENT;
+	if (!dbgaufs) {
+		AuErr1("/debug/aufs is uninitialized\n");
+		goto out;
+	}
+
+	err = -EIO;
+	sysaufs_name(sbinfo, name);
+	sbinfo->si_dbgaufs = debugfs_create_dir(name, dbgaufs);
+	if (unlikely(!sbinfo->si_dbgaufs))
+		goto out;
+
+	/* regardless plink/noplink option */
+	sbinfo->si_dbgaufs_plink = debugfs_create_file
+		("plink", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
+		 &dbgaufs_plink_fop);
+	if (unlikely(!sbinfo->si_dbgaufs_plink))
+		goto out_dir;
+
+	/* regardless xino/noxino option */
+	sbinfo->si_dbgaufs_xib = debugfs_create_file
+		("xib", dbgaufs_mode, sbinfo->si_dbgaufs, sbinfo,
+		 &dbgaufs_xib_fop);
+	if (unlikely(!sbinfo->si_dbgaufs_xib))
+		goto out_dir;
+
+	err = dbgaufs_xigen_init(sbinfo);
+	if (!err)
+		goto out; /* success */
+
+out_dir:
+	dbgaufs_si_fin(sbinfo);
+out:
+	if (unlikely(err))
+		pr_err("debugfs/aufs failed\n");
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void dbgaufs_fin(void)
+{
+	debugfs_remove(dbgaufs);
+}
+
+int __init dbgaufs_init(void)
+{
+	int err;
+
+	err = -EIO;
+	dbgaufs = debugfs_create_dir(AUFS_NAME, NULL);
+	if (dbgaufs)
+		err = 0;
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/dbgaufs.h b/fs/aufs/dbgaufs.h
--- a/fs/aufs/dbgaufs.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dbgaufs.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * debugfs interface
+ */
+
+#ifndef __DBGAUFS_H__
+#define __DBGAUFS_H__
+
+#ifdef __KERNEL__
+
+struct super_block;
+struct au_sbinfo;
+struct au_branch;
+
+#ifdef CONFIG_DEBUG_FS
+/* dbgaufs.c */
+void dbgaufs_xino_del(struct au_branch *br);
+void dbgaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex);
+void dbgaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex, int topdown);
+void dbgaufs_si_fin(struct au_sbinfo *sbinfo);
+int dbgaufs_si_init(struct au_sbinfo *sbinfo);
+void dbgaufs_fin(void);
+int __init dbgaufs_init(void);
+#else
+AuStubVoid(dbgaufs_xino_del, struct au_branch *br)
+AuStubVoid(dbgaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex)
+AuStubVoid(dbgaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex,
+	   int topdown)
+AuStubVoid(dbgaufs_si_fin, struct au_sbinfo *sbinfo)
+AuStubInt0(dbgaufs_si_init, struct au_sbinfo *sbinfo)
+AuStubVoid(dbgaufs_fin, void)
+AuStubInt0(__init dbgaufs_init, void)
+#endif /* CONFIG_DEBUG_FS */
+
+#endif /* __KERNEL__ */
+#endif /* __DBGAUFS_H__ */
diff -Naur --no-dereference a/fs/aufs/dcsub.c b/fs/aufs/dcsub.c
--- a/fs/aufs/dcsub.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dcsub.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,225 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sub-routines for dentry cache
+ */
+
+#include "aufs.h"
+
+static void au_dpage_free(struct au_dpage *dpage)
+{
+	int i;
+	struct dentry **p;
+
+	p = dpage->dentries;
+	for (i = 0; i < dpage->ndentry; i++)
+		dput(*p++);
+	free_page((unsigned long)dpage->dentries);
+}
+
+int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp)
+{
+	int err;
+	void *p;
+
+	err = -ENOMEM;
+	dpages->dpages = kmalloc(sizeof(*dpages->dpages), gfp);
+	if (unlikely(!dpages->dpages))
+		goto out;
+
+	p = (void *)__get_free_page(gfp);
+	if (unlikely(!p))
+		goto out_dpages;
+
+	dpages->dpages[0].ndentry = 0;
+	dpages->dpages[0].dentries = p;
+	dpages->ndpage = 1;
+	return 0; /* success */
+
+out_dpages:
+	au_kfree_try_rcu(dpages->dpages);
+out:
+	return err;
+}
+
+void au_dpages_free(struct au_dcsub_pages *dpages)
+{
+	int i;
+	struct au_dpage *p;
+
+	p = dpages->dpages;
+	for (i = 0; i < dpages->ndpage; i++)
+		au_dpage_free(p++);
+	au_kfree_try_rcu(dpages->dpages);
+}
+
+static int au_dpages_append(struct au_dcsub_pages *dpages,
+			    struct dentry *dentry, gfp_t gfp)
+{
+	int err, sz;
+	struct au_dpage *dpage;
+	void *p;
+
+	dpage = dpages->dpages + dpages->ndpage - 1;
+	sz = PAGE_SIZE / sizeof(dentry);
+	if (unlikely(dpage->ndentry >= sz)) {
+		AuLabel(new dpage);
+		err = -ENOMEM;
+		sz = dpages->ndpage * sizeof(*dpages->dpages);
+		p = au_kzrealloc(dpages->dpages, sz,
+				 sz + sizeof(*dpages->dpages), gfp,
+				 /*may_shrink*/0);
+		if (unlikely(!p))
+			goto out;
+
+		dpages->dpages = p;
+		dpage = dpages->dpages + dpages->ndpage;
+		p = (void *)__get_free_page(gfp);
+		if (unlikely(!p))
+			goto out;
+
+		dpage->ndentry = 0;
+		dpage->dentries = p;
+		dpages->ndpage++;
+	}
+
+	AuDebugOn(au_dcount(dentry) <= 0);
+	dpage->dentries[dpage->ndentry++] = dget_dlock(dentry);
+	return 0; /* success */
+
+out:
+	return err;
+}
+
+/* todo: BAD approach */
+/* copied from linux/fs/dcache.c */
+enum d_walk_ret {
+	D_WALK_CONTINUE,
+	D_WALK_QUIT,
+	D_WALK_NORETRY,
+	D_WALK_SKIP,
+};
+
+extern void d_walk(struct dentry *parent, void *data,
+		   enum d_walk_ret (*enter)(void *, struct dentry *));
+
+struct ac_dpages_arg {
+	int err;
+	struct au_dcsub_pages *dpages;
+	struct super_block *sb;
+	au_dpages_test test;
+	void *arg;
+};
+
+static enum d_walk_ret au_call_dpages_append(void *_arg, struct dentry *dentry)
+{
+	enum d_walk_ret ret;
+	struct ac_dpages_arg *arg = _arg;
+
+	ret = D_WALK_CONTINUE;
+	if (dentry->d_sb == arg->sb
+	    && !IS_ROOT(dentry)
+	    && au_dcount(dentry) > 0
+	    && au_di(dentry)
+	    && (!arg->test || arg->test(dentry, arg->arg))) {
+		arg->err = au_dpages_append(arg->dpages, dentry, GFP_ATOMIC);
+		if (unlikely(arg->err))
+			ret = D_WALK_QUIT;
+	}
+
+	return ret;
+}
+
+int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root,
+		   au_dpages_test test, void *arg)
+{
+	struct ac_dpages_arg args = {
+		.err	= 0,
+		.dpages	= dpages,
+		.sb	= root->d_sb,
+		.test	= test,
+		.arg	= arg
+	};
+
+	d_walk(root, &args, au_call_dpages_append);
+
+	return args.err;
+}
+
+int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry,
+		       int do_include, au_dpages_test test, void *arg)
+{
+	int err;
+
+	err = 0;
+	write_seqlock(&rename_lock);
+	spin_lock(&dentry->d_lock);
+	if (do_include
+	    && au_dcount(dentry) > 0
+	    && (!test || test(dentry, arg)))
+		err = au_dpages_append(dpages, dentry, GFP_ATOMIC);
+	spin_unlock(&dentry->d_lock);
+	if (unlikely(err))
+		goto out;
+
+	/*
+	 * RCU for vfsmount is unnecessary since this is a traverse in a single
+	 * mount
+	 */
+	while (!IS_ROOT(dentry)) {
+		dentry = dentry->d_parent; /* rename_lock is locked */
+		spin_lock(&dentry->d_lock);
+		if (au_dcount(dentry) > 0
+		    && (!test || test(dentry, arg)))
+			err = au_dpages_append(dpages, dentry, GFP_ATOMIC);
+		spin_unlock(&dentry->d_lock);
+		if (unlikely(err))
+			break;
+	}
+
+out:
+	write_sequnlock(&rename_lock);
+	return err;
+}
+
+static inline int au_dcsub_dpages_aufs(struct dentry *dentry, void *arg)
+{
+	return au_di(dentry) && dentry->d_sb == arg;
+}
+
+int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages,
+			    struct dentry *dentry, int do_include)
+{
+	return au_dcsub_pages_rev(dpages, dentry, do_include,
+				  au_dcsub_dpages_aufs, dentry->d_sb);
+}
+
+int au_test_subdir(struct dentry *d1, struct dentry *d2)
+{
+	struct path path[2] = {
+		{
+			.dentry = d1
+		},
+		{
+			.dentry = d2
+		}
+	};
+
+	return path_is_under(path + 0, path + 1);
+}
diff -Naur --no-dereference a/fs/aufs/dcsub.h b/fs/aufs/dcsub.h
--- a/fs/aufs/dcsub.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dcsub.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sub-routines for dentry cache
+ */
+
+#ifndef __AUFS_DCSUB_H__
+#define __AUFS_DCSUB_H__
+
+#ifdef __KERNEL__
+
+#include <linux/dcache.h>
+#include <linux/fs.h>
+
+struct au_dpage {
+	int ndentry;
+	struct dentry **dentries;
+};
+
+struct au_dcsub_pages {
+	int ndpage;
+	struct au_dpage *dpages;
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* dcsub.c */
+int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp);
+void au_dpages_free(struct au_dcsub_pages *dpages);
+typedef int (*au_dpages_test)(struct dentry *dentry, void *arg);
+int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root,
+		   au_dpages_test test, void *arg);
+int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry,
+		       int do_include, au_dpages_test test, void *arg);
+int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages,
+			    struct dentry *dentry, int do_include);
+int au_test_subdir(struct dentry *d1, struct dentry *d2);
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * todo: in linux-3.13, several similar (but faster) helpers are added to
+ * include/linux/dcache.h. Try them (in the future).
+ */
+
+static inline int au_d_hashed_positive(struct dentry *d)
+{
+	int err;
+	struct inode *inode = d_inode(d);
+
+	err = 0;
+	if (unlikely(d_unhashed(d)
+		     || d_is_negative(d)
+		     || !inode->i_nlink))
+		err = -ENOENT;
+	return err;
+}
+
+static inline int au_d_linkable(struct dentry *d)
+{
+	int err;
+	struct inode *inode = d_inode(d);
+
+	err = au_d_hashed_positive(d);
+	if (err
+	    && d_is_positive(d)
+	    && (inode->i_state & I_LINKABLE))
+		err = 0;
+	return err;
+}
+
+static inline int au_d_alive(struct dentry *d)
+{
+	int err;
+	struct inode *inode;
+
+	err = 0;
+	if (!IS_ROOT(d))
+		err = au_d_hashed_positive(d);
+	else {
+		inode = d_inode(d);
+		if (unlikely(d_unlinked(d)
+			     || d_is_negative(d)
+			     || !inode->i_nlink))
+			err = -ENOENT;
+	}
+	return err;
+}
+
+static inline int au_alive_dir(struct dentry *d)
+{
+	int err;
+
+	err = au_d_alive(d);
+	if (unlikely(err || IS_DEADDIR(d_inode(d))))
+		err = -ENOENT;
+	return err;
+}
+
+static inline int au_qstreq(struct qstr *a, struct qstr *b)
+{
+	return a->len == b->len
+		&& !memcmp(a->name, b->name, a->len);
+}
+
+/*
+ * by the commit
+ * 360f547 2015-01-25 dcache: let the dentry count go down to zero without
+ *			taking d_lock
+ * the type of d_lockref.count became int, but the inlined function d_count()
+ * still returns unsigned int.
+ * I don't know why. Maybe it is for every d_count() users?
+ * Anyway au_dcount() lives on.
+ */
+static inline int au_dcount(struct dentry *d)
+{
+	return (int)d_count(d);
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DCSUB_H__ */
diff -Naur --no-dereference a/fs/aufs/debug.c b/fs/aufs/debug.c
--- a/fs/aufs/debug.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/debug.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,444 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * debug print functions
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/* Returns 0, or -errno.  arg is in kp->arg. */
+static int param_atomic_t_set(const char *val, const struct kernel_param *kp)
+{
+	int err, n;
+
+	err = kstrtoint(val, 0, &n);
+	if (!err) {
+		if (n > 0)
+			au_debug_on();
+		else
+			au_debug_off();
+	}
+	return err;
+}
+
+/* Returns length written or -errno.  Buffer is 4k (ie. be short!) */
+static int param_atomic_t_get(char *buffer, const struct kernel_param *kp)
+{
+	atomic_t *a;
+
+	a = kp->arg;
+	return sprintf(buffer, "%d", atomic_read(a));
+}
+
+static struct kernel_param_ops param_ops_atomic_t = {
+	.set = param_atomic_t_set,
+	.get = param_atomic_t_get
+	/* void (*free)(void *arg) */
+};
+
+atomic_t aufs_debug = ATOMIC_INIT(0);
+MODULE_PARM_DESC(debug, "debug print");
+module_param_named(debug, aufs_debug, atomic_t, 0664);
+
+DEFINE_MUTEX(au_dbg_mtx);	/* just to serialize the dbg msgs */
+char *au_plevel = KERN_DEBUG;
+#define dpri(fmt, ...) do {					\
+	if ((au_plevel						\
+	     && strcmp(au_plevel, KERN_DEBUG))			\
+	    || au_debug_test())					\
+		printk("%s" fmt, au_plevel, ##__VA_ARGS__);	\
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+
+void au_dpri_whlist(struct au_nhash *whlist)
+{
+	unsigned long ul, n;
+	struct hlist_head *head;
+	struct au_vdir_wh *pos;
+
+	n = whlist->nh_num;
+	head = whlist->nh_head;
+	for (ul = 0; ul < n; ul++) {
+		hlist_for_each_entry(pos, head, wh_hash)
+			dpri("b%d, %.*s, %d\n",
+			     pos->wh_bindex,
+			     pos->wh_str.len, pos->wh_str.name,
+			     pos->wh_str.len);
+		head++;
+	}
+}
+
+void au_dpri_vdir(struct au_vdir *vdir)
+{
+	unsigned long ul;
+	union au_vdir_deblk_p p;
+	unsigned char *o;
+
+	if (!vdir || IS_ERR(vdir)) {
+		dpri("err %ld\n", PTR_ERR(vdir));
+		return;
+	}
+
+	dpri("deblk %u, nblk %lu, deblk %p, last{%lu, %p}, ver %llu\n",
+	     vdir->vd_deblk_sz, vdir->vd_nblk, vdir->vd_deblk,
+	     vdir->vd_last.ul, vdir->vd_last.p.deblk, vdir->vd_version);
+	for (ul = 0; ul < vdir->vd_nblk; ul++) {
+		p.deblk = vdir->vd_deblk[ul];
+		o = p.deblk;
+		dpri("[%lu]: %p\n", ul, o);
+	}
+}
+
+static int do_pri_inode(aufs_bindex_t bindex, struct inode *inode, int hn,
+			struct dentry *wh)
+{
+	char *n = NULL;
+	int l = 0;
+
+	if (!inode || IS_ERR(inode)) {
+		dpri("i%d: err %ld\n", bindex, PTR_ERR(inode));
+		return -1;
+	}
+
+	/* the type of i_blocks depends upon CONFIG_LBDAF */
+	BUILD_BUG_ON(sizeof(inode->i_blocks) != sizeof(unsigned long)
+		     && sizeof(inode->i_blocks) != sizeof(u64));
+	if (wh) {
+		n = (void *)wh->d_name.name;
+		l = wh->d_name.len;
+	}
+
+	dpri("i%d: %p, i%lu, %s, cnt %d, nl %u, 0%o, sz %llu, blk %llu,"
+	     " hn %d, ct %lld, np %lu, st 0x%lx, f 0x%x, v %llu, g %x%s%.*s\n",
+	     bindex, inode,
+	     inode->i_ino, inode->i_sb ? au_sbtype(inode->i_sb) : "??",
+	     atomic_read(&inode->i_count), inode->i_nlink, inode->i_mode,
+	     i_size_read(inode), (unsigned long long)inode->i_blocks,
+	     hn, (long long)timespec64_to_ns(&inode->i_ctime) & 0x0ffff,
+	     inode->i_mapping ? inode->i_mapping->nrpages : 0,
+	     inode->i_state, inode->i_flags, inode_peek_iversion(inode),
+	     inode->i_generation,
+	     l ? ", wh " : "", l, n);
+	return 0;
+}
+
+void au_dpri_inode(struct inode *inode)
+{
+	struct au_iinfo *iinfo;
+	struct au_hinode *hi;
+	aufs_bindex_t bindex;
+	int err, hn;
+
+	err = do_pri_inode(-1, inode, -1, NULL);
+	if (err || !au_test_aufs(inode->i_sb) || au_is_bad_inode(inode))
+		return;
+
+	iinfo = au_ii(inode);
+	dpri("i-1: btop %d, bbot %d, gen %d\n",
+	     iinfo->ii_btop, iinfo->ii_bbot, au_iigen(inode, NULL));
+	if (iinfo->ii_btop < 0)
+		return;
+	hn = 0;
+	for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot; bindex++) {
+		hi = au_hinode(iinfo, bindex);
+		hn = !!au_hn(hi);
+		do_pri_inode(bindex, hi->hi_inode, hn, hi->hi_whdentry);
+	}
+}
+
+void au_dpri_dalias(struct inode *inode)
+{
+	struct dentry *d;
+
+	spin_lock(&inode->i_lock);
+	hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias)
+		au_dpri_dentry(d);
+	spin_unlock(&inode->i_lock);
+}
+
+static int do_pri_dentry(aufs_bindex_t bindex, struct dentry *dentry)
+{
+	struct dentry *wh = NULL;
+	int hn;
+	struct inode *inode;
+	struct au_iinfo *iinfo;
+	struct au_hinode *hi;
+
+	if (!dentry || IS_ERR(dentry)) {
+		dpri("d%d: err %ld\n", bindex, PTR_ERR(dentry));
+		return -1;
+	}
+	/* do not call dget_parent() here */
+	/* note: access d_xxx without d_lock */
+	dpri("d%d: %p, %pd2?, %s, cnt %d, flags 0x%x, %shashed\n",
+	     bindex, dentry, dentry,
+	     dentry->d_sb ? au_sbtype(dentry->d_sb) : "??",
+	     au_dcount(dentry), dentry->d_flags,
+	     d_unhashed(dentry) ? "un" : "");
+	hn = -1;
+	inode = NULL;
+	if (d_is_positive(dentry))
+		inode = d_inode(dentry);
+	if (inode
+	    && au_test_aufs(dentry->d_sb)
+	    && bindex >= 0
+	    && !au_is_bad_inode(inode)) {
+		iinfo = au_ii(inode);
+		hi = au_hinode(iinfo, bindex);
+		hn = !!au_hn(hi);
+		wh = hi->hi_whdentry;
+	}
+	do_pri_inode(bindex, inode, hn, wh);
+	return 0;
+}
+
+void au_dpri_dentry(struct dentry *dentry)
+{
+	struct au_dinfo *dinfo;
+	aufs_bindex_t bindex;
+	int err;
+
+	err = do_pri_dentry(-1, dentry);
+	if (err || !au_test_aufs(dentry->d_sb))
+		return;
+
+	dinfo = au_di(dentry);
+	if (!dinfo)
+		return;
+	dpri("d-1: btop %d, bbot %d, bwh %d, bdiropq %d, gen %d, tmp %d\n",
+	     dinfo->di_btop, dinfo->di_bbot,
+	     dinfo->di_bwh, dinfo->di_bdiropq, au_digen(dentry),
+	     dinfo->di_tmpfile);
+	if (dinfo->di_btop < 0)
+		return;
+	for (bindex = dinfo->di_btop; bindex <= dinfo->di_bbot; bindex++)
+		do_pri_dentry(bindex, au_hdentry(dinfo, bindex)->hd_dentry);
+}
+
+static int do_pri_file(aufs_bindex_t bindex, struct file *file)
+{
+	char a[32];
+
+	if (!file || IS_ERR(file)) {
+		dpri("f%d: err %ld\n", bindex, PTR_ERR(file));
+		return -1;
+	}
+	a[0] = 0;
+	if (bindex < 0
+	    && !IS_ERR_OR_NULL(file->f_path.dentry)
+	    && au_test_aufs(file->f_path.dentry->d_sb)
+	    && au_fi(file))
+		snprintf(a, sizeof(a), ", gen %d, mmapped %d",
+			 au_figen(file), atomic_read(&au_fi(file)->fi_mmapped));
+	dpri("f%d: mode 0x%x, flags 0%o, cnt %ld, v %llu, pos %llu%s\n",
+	     bindex, file->f_mode, file->f_flags, (long)file_count(file),
+	     file->f_version, file->f_pos, a);
+	if (!IS_ERR_OR_NULL(file->f_path.dentry))
+		do_pri_dentry(bindex, file->f_path.dentry);
+	return 0;
+}
+
+void au_dpri_file(struct file *file)
+{
+	struct au_finfo *finfo;
+	struct au_fidir *fidir;
+	struct au_hfile *hfile;
+	aufs_bindex_t bindex;
+	int err;
+
+	err = do_pri_file(-1, file);
+	if (err
+	    || IS_ERR_OR_NULL(file->f_path.dentry)
+	    || !au_test_aufs(file->f_path.dentry->d_sb))
+		return;
+
+	finfo = au_fi(file);
+	if (!finfo)
+		return;
+	if (finfo->fi_btop < 0)
+		return;
+	fidir = finfo->fi_hdir;
+	if (!fidir)
+		do_pri_file(finfo->fi_btop, finfo->fi_htop.hf_file);
+	else
+		for (bindex = finfo->fi_btop;
+		     bindex >= 0 && bindex <= fidir->fd_bbot;
+		     bindex++) {
+			hfile = fidir->fd_hfile + bindex;
+			do_pri_file(bindex, hfile ? hfile->hf_file : NULL);
+		}
+}
+
+static int do_pri_br(aufs_bindex_t bindex, struct au_branch *br)
+{
+	struct vfsmount *mnt;
+	struct super_block *sb;
+
+	if (!br || IS_ERR(br))
+		goto out;
+	mnt = au_br_mnt(br);
+	if (!mnt || IS_ERR(mnt))
+		goto out;
+	sb = mnt->mnt_sb;
+	if (!sb || IS_ERR(sb))
+		goto out;
+
+	dpri("s%d: {perm 0x%x, id %d, wbr %p}, "
+	     "%s, dev 0x%02x%02x, flags 0x%lx, cnt %d, active %d, "
+	     "xino %d\n",
+	     bindex, br->br_perm, br->br_id, br->br_wbr,
+	     au_sbtype(sb), MAJOR(sb->s_dev), MINOR(sb->s_dev),
+	     sb->s_flags, sb->s_count,
+	     atomic_read(&sb->s_active),
+	     !!au_xino_file(br->br_xino, /*idx*/-1));
+	return 0;
+
+out:
+	dpri("s%d: err %ld\n", bindex, PTR_ERR(br));
+	return -1;
+}
+
+void au_dpri_sb(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+	aufs_bindex_t bindex;
+	int err;
+	/* to reduce stack size */
+	struct {
+		struct vfsmount mnt;
+		struct au_branch fake;
+	} *a;
+
+	/* this function can be called from magic sysrq */
+	a = kzalloc(sizeof(*a), GFP_ATOMIC);
+	if (unlikely(!a)) {
+		dpri("no memory\n");
+		return;
+	}
+
+	a->mnt.mnt_sb = sb;
+	a->fake.br_path.mnt = &a->mnt;
+	err = do_pri_br(-1, &a->fake);
+	au_kfree_rcu(a);
+	dpri("dev 0x%x\n", sb->s_dev);
+	if (err || !au_test_aufs(sb))
+		return;
+
+	sbinfo = au_sbi(sb);
+	if (!sbinfo)
+		return;
+	dpri("nw %d, gen %u, kobj %d\n",
+	     atomic_read(&sbinfo->si_nowait.nw_len), sbinfo->si_generation,
+	     kref_read(&sbinfo->si_kobj.kref));
+	for (bindex = 0; bindex <= sbinfo->si_bbot; bindex++)
+		do_pri_br(bindex, sbinfo->si_branch[0 + bindex]);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line)
+{
+	struct inode *h_inode, *inode = d_inode(dentry);
+	struct dentry *h_dentry;
+	aufs_bindex_t bindex, bbot, bi;
+
+	if (!inode /* || au_di(dentry)->di_lsc == AuLsc_DI_TMP */)
+		return;
+
+	bbot = au_dbbot(dentry);
+	bi = au_ibbot(inode);
+	if (bi < bbot)
+		bbot = bi;
+	bindex = au_dbtop(dentry);
+	bi = au_ibtop(inode);
+	if (bi > bindex)
+		bindex = bi;
+
+	for (; bindex <= bbot; bindex++) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (!h_dentry)
+			continue;
+		h_inode = au_h_iptr(inode, bindex);
+		if (unlikely(h_inode != d_inode(h_dentry))) {
+			au_debug_on();
+			AuDbg("b%d, %s:%d\n", bindex, func, line);
+			AuDbgDentry(dentry);
+			AuDbgInode(inode);
+			au_debug_off();
+			if (au_test_fuse(h_inode->i_sb))
+				WARN_ON_ONCE(1);
+			else
+				BUG();
+		}
+	}
+}
+
+void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen)
+{
+	int err, i, j;
+	struct au_dcsub_pages dpages;
+	struct au_dpage *dpage;
+	struct dentry **dentries;
+
+	err = au_dpages_init(&dpages, GFP_NOFS);
+	AuDebugOn(err);
+	err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/1);
+	AuDebugOn(err);
+	for (i = dpages.ndpage - 1; !err && i >= 0; i--) {
+		dpage = dpages.dpages + i;
+		dentries = dpage->dentries;
+		for (j = dpage->ndentry - 1; !err && j >= 0; j--)
+			AuDebugOn(au_digen_test(dentries[j], sigen));
+	}
+	au_dpages_free(&dpages);
+}
+
+void au_dbg_verify_kthread(void)
+{
+	if (au_wkq_test()) {
+		au_dbg_blocked();
+		/*
+		 * It may be recursive, but udba=notify between two aufs mounts,
+		 * where a single ro branch is shared, is not a problem.
+		 */
+		/* WARN_ON(1); */
+	}
+}
+
+/* ---------------------------------------------------------------------- */
+
+int __init au_debug_init(void)
+{
+	aufs_bindex_t bindex;
+	struct au_vdir_destr destr;
+
+	bindex = -1;
+	AuDebugOn(bindex >= 0);
+
+	destr.len = -1;
+	AuDebugOn(destr.len < NAME_MAX);
+
+#ifdef CONFIG_4KSTACKS
+	pr_warn("CONFIG_4KSTACKS is defined.\n");
+#endif
+
+	return 0;
+}
diff -Naur --no-dereference a/fs/aufs/debug.h b/fs/aufs/debug.h
--- a/fs/aufs/debug.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/debug.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,226 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * debug print functions
+ */
+
+#ifndef __AUFS_DEBUG_H__
+#define __AUFS_DEBUG_H__
+
+#ifdef __KERNEL__
+
+#include <linux/atomic.h>
+#include <linux/module.h>
+#include <linux/kallsyms.h>
+#include <linux/sysrq.h>
+
+#ifdef CONFIG_AUFS_DEBUG
+#define AuDebugOn(a)		BUG_ON(a)
+
+/* module parameter */
+extern atomic_t aufs_debug;
+static inline void au_debug_on(void)
+{
+	atomic_inc(&aufs_debug);
+}
+static inline void au_debug_off(void)
+{
+	atomic_dec_if_positive(&aufs_debug);
+}
+
+static inline int au_debug_test(void)
+{
+	return atomic_read(&aufs_debug) > 0;
+}
+#else
+#define AuDebugOn(a)		do {} while (0)
+AuStubVoid(au_debug_on, void)
+AuStubVoid(au_debug_off, void)
+AuStubInt0(au_debug_test, void)
+#endif /* CONFIG_AUFS_DEBUG */
+
+#define param_check_atomic_t(name, p) __param_check(name, p, atomic_t)
+
+/* ---------------------------------------------------------------------- */
+
+/* debug print */
+
+#define AuDbg(fmt, ...) do { \
+	if (au_debug_test()) \
+		pr_debug("DEBUG: " fmt, ##__VA_ARGS__); \
+} while (0)
+#define AuLabel(l)		AuDbg(#l "\n")
+#define AuIOErr(fmt, ...)	pr_err("I/O Error, " fmt, ##__VA_ARGS__)
+#define AuWarn1(fmt, ...) do { \
+	static unsigned char _c; \
+	if (!_c++) \
+		pr_warn(fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define AuErr1(fmt, ...) do { \
+	static unsigned char _c; \
+	if (!_c++) \
+		pr_err(fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define AuIOErr1(fmt, ...) do { \
+	static unsigned char _c; \
+	if (!_c++) \
+		AuIOErr(fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define AuUnsupportMsg	"This operation is not supported." \
+			" Please report this application to aufs-users ML."
+#define AuUnsupport(fmt, ...) do { \
+	pr_err(AuUnsupportMsg "\n" fmt, ##__VA_ARGS__); \
+	dump_stack(); \
+} while (0)
+
+#define AuTraceErr(e) do { \
+	if (unlikely((e) < 0)) \
+		AuDbg("err %d\n", (int)(e)); \
+} while (0)
+
+#define AuTraceErrPtr(p) do { \
+	if (IS_ERR(p)) \
+		AuDbg("err %ld\n", PTR_ERR(p)); \
+} while (0)
+
+/* dirty macros for debug print, use with "%.*s" and caution */
+#define AuLNPair(qstr)		(qstr)->len, (qstr)->name
+
+/* ---------------------------------------------------------------------- */
+
+struct dentry;
+#ifdef CONFIG_AUFS_DEBUG
+extern struct mutex au_dbg_mtx;
+extern char *au_plevel;
+struct au_nhash;
+void au_dpri_whlist(struct au_nhash *whlist);
+struct au_vdir;
+void au_dpri_vdir(struct au_vdir *vdir);
+struct inode;
+void au_dpri_inode(struct inode *inode);
+void au_dpri_dalias(struct inode *inode);
+void au_dpri_dentry(struct dentry *dentry);
+struct file;
+void au_dpri_file(struct file *filp);
+struct super_block;
+void au_dpri_sb(struct super_block *sb);
+
+#define au_dbg_verify_dinode(d) __au_dbg_verify_dinode(d, __func__, __LINE__)
+void __au_dbg_verify_dinode(struct dentry *dentry, const char *func, int line);
+void au_dbg_verify_gen(struct dentry *parent, unsigned int sigen);
+void au_dbg_verify_kthread(void);
+
+int __init au_debug_init(void);
+
+#define AuDbgWhlist(w) do { \
+	mutex_lock(&au_dbg_mtx); \
+	AuDbg(#w "\n"); \
+	au_dpri_whlist(w); \
+	mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgVdir(v) do { \
+	mutex_lock(&au_dbg_mtx); \
+	AuDbg(#v "\n"); \
+	au_dpri_vdir(v); \
+	mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgInode(i) do { \
+	mutex_lock(&au_dbg_mtx); \
+	AuDbg(#i "\n"); \
+	au_dpri_inode(i); \
+	mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgDAlias(i) do { \
+	mutex_lock(&au_dbg_mtx); \
+	AuDbg(#i "\n"); \
+	au_dpri_dalias(i); \
+	mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgDentry(d) do { \
+	mutex_lock(&au_dbg_mtx); \
+	AuDbg(#d "\n"); \
+	au_dpri_dentry(d); \
+	mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgFile(f) do { \
+	mutex_lock(&au_dbg_mtx); \
+	AuDbg(#f "\n"); \
+	au_dpri_file(f); \
+	mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgSb(sb) do { \
+	mutex_lock(&au_dbg_mtx); \
+	AuDbg(#sb "\n"); \
+	au_dpri_sb(sb); \
+	mutex_unlock(&au_dbg_mtx); \
+} while (0)
+
+#define AuDbgSym(addr) do {				\
+	char sym[KSYM_SYMBOL_LEN];			\
+	sprint_symbol(sym, (unsigned long)addr);	\
+	AuDbg("%s\n", sym);				\
+} while (0)
+#else
+AuStubVoid(au_dbg_verify_dinode, struct dentry *dentry)
+AuStubVoid(au_dbg_verify_gen, struct dentry *parent, unsigned int sigen)
+AuStubVoid(au_dbg_verify_kthread, void)
+AuStubInt0(__init au_debug_init, void)
+
+#define AuDbgWhlist(w)		do {} while (0)
+#define AuDbgVdir(v)		do {} while (0)
+#define AuDbgInode(i)		do {} while (0)
+#define AuDbgDAlias(i)		do {} while (0)
+#define AuDbgDentry(d)		do {} while (0)
+#define AuDbgFile(f)		do {} while (0)
+#define AuDbgSb(sb)		do {} while (0)
+#define AuDbgSym(addr)		do {} while (0)
+#endif /* CONFIG_AUFS_DEBUG */
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_MAGIC_SYSRQ
+int __init au_sysrq_init(void);
+void au_sysrq_fin(void);
+
+#ifdef CONFIG_HW_CONSOLE
+#define au_dbg_blocked() do { \
+	WARN_ON(1); \
+	handle_sysrq('w'); \
+} while (0)
+#else
+AuStubVoid(au_dbg_blocked, void)
+#endif
+
+#else
+AuStubInt0(__init au_sysrq_init, void)
+AuStubVoid(au_sysrq_fin, void)
+AuStubVoid(au_dbg_blocked, void)
+#endif /* CONFIG_AUFS_MAGIC_SYSRQ */
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DEBUG_H__ */
diff -Naur --no-dereference a/fs/aufs/dentry.c b/fs/aufs/dentry.c
--- a/fs/aufs/dentry.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dentry.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1168 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * lookup and dentry operations
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/*
+ * returns positive/negative dentry, NULL or an error.
+ * NULL means whiteout-ed or not-found.
+ */
+static struct dentry*
+au_do_lookup(struct dentry *h_parent, struct dentry *dentry,
+	     aufs_bindex_t bindex, struct au_do_lookup_args *args)
+{
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+	struct au_branch *br;
+	struct user_namespace *h_userns;
+	struct path h_path;
+	int wh_found, opq;
+	unsigned char wh_able;
+	const unsigned char allow_neg = !!au_ftest_lkup(args->flags, ALLOW_NEG);
+	const unsigned char ignore_perm = !!au_ftest_lkup(args->flags,
+							  IGNORE_PERM);
+
+	wh_found = 0;
+	br = au_sbr(dentry->d_sb, bindex);
+	h_path.dentry = h_parent;
+	h_path.mnt = au_br_mnt(br);
+	h_userns = au_br_userns(br);
+	wh_able = !!au_br_whable(br->br_perm);
+	if (wh_able)
+		wh_found = au_wh_test(h_userns, &h_path, &args->whname,
+				      ignore_perm);
+	h_dentry = ERR_PTR(wh_found);
+	if (!wh_found)
+		goto real_lookup;
+	if (unlikely(wh_found < 0))
+		goto out;
+
+	/* We found a whiteout */
+	/* au_set_dbbot(dentry, bindex); */
+	au_set_dbwh(dentry, bindex);
+	if (!allow_neg)
+		return NULL; /* success */
+
+real_lookup:
+	if (!ignore_perm)
+		h_dentry = vfsub_lkup_one(args->name, &h_path);
+	else
+		h_dentry = au_sio_lkup_one(h_userns, args->name, &h_path);
+	if (IS_ERR(h_dentry)) {
+		if (PTR_ERR(h_dentry) == -ENAMETOOLONG
+		    && !allow_neg)
+			h_dentry = NULL;
+		goto out;
+	}
+
+	h_inode = d_inode(h_dentry);
+	if (d_is_negative(h_dentry)) {
+		if (!allow_neg)
+			goto out_neg;
+	} else if (wh_found
+		   || (args->type && args->type != (h_inode->i_mode & S_IFMT)))
+		goto out_neg;
+	else if (au_ftest_lkup(args->flags, DIRREN)
+		 /* && h_inode */
+		 && !au_dr_lkup_h_ino(args, bindex, h_inode->i_ino)) {
+		AuDbg("b%d %pd ignored hi%llu\n", bindex, h_dentry,
+		      (unsigned long long)h_inode->i_ino);
+		goto out_neg;
+	}
+
+	if (au_dbbot(dentry) <= bindex)
+		au_set_dbbot(dentry, bindex);
+	if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
+		au_set_dbtop(dentry, bindex);
+	au_set_h_dptr(dentry, bindex, h_dentry);
+
+	if (!d_is_dir(h_dentry)
+	    || !wh_able
+	    || (d_really_is_positive(dentry) && !d_is_dir(dentry)))
+		goto out; /* success */
+
+	h_path.dentry = h_dentry;
+	inode_lock_shared_nested(h_inode, AuLsc_I_CHILD);
+	opq = au_diropq_test(h_userns, &h_path);
+	inode_unlock_shared(h_inode);
+	if (opq > 0)
+		au_set_dbdiropq(dentry, bindex);
+	else if (unlikely(opq < 0)) {
+		au_set_h_dptr(dentry, bindex, NULL);
+		h_dentry = ERR_PTR(opq);
+	}
+	goto out;
+
+out_neg:
+	dput(h_dentry);
+	h_dentry = NULL;
+out:
+	return h_dentry;
+}
+
+static int au_test_shwh(struct super_block *sb, const struct qstr *name)
+{
+	if (unlikely(!au_opt_test(au_mntflags(sb), SHWH)
+		     && !strncmp(name->name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)))
+		return -EPERM;
+	return 0;
+}
+
+/*
+ * returns the number of lower positive dentries,
+ * otherwise an error.
+ * can be called at unlinking with @type is zero.
+ */
+int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop,
+		   unsigned int flags)
+{
+	int npositive, err;
+	aufs_bindex_t bindex, btail, bdiropq;
+	unsigned char isdir, dirperm1, dirren;
+	struct au_do_lookup_args args = {
+		.flags		= flags,
+		.name		= &dentry->d_name
+	};
+	struct dentry *parent;
+	struct super_block *sb;
+
+	sb = dentry->d_sb;
+	err = au_test_shwh(sb, args.name);
+	if (unlikely(err))
+		goto out;
+
+	err = au_wh_name_alloc(&args.whname, args.name);
+	if (unlikely(err))
+		goto out;
+
+	isdir = !!d_is_dir(dentry);
+	dirperm1 = !!au_opt_test(au_mntflags(sb), DIRPERM1);
+	dirren = !!au_opt_test(au_mntflags(sb), DIRREN);
+	if (dirren)
+		au_fset_lkup(args.flags, DIRREN);
+
+	npositive = 0;
+	parent = dget_parent(dentry);
+	btail = au_dbtaildir(parent);
+	for (bindex = btop; bindex <= btail; bindex++) {
+		struct dentry *h_parent, *h_dentry;
+		struct inode *h_inode, *h_dir;
+		struct au_branch *br;
+
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (h_dentry) {
+			if (d_is_positive(h_dentry))
+				npositive++;
+			break;
+		}
+		h_parent = au_h_dptr(parent, bindex);
+		if (!h_parent || !d_is_dir(h_parent))
+			continue;
+
+		if (dirren) {
+			/* if the inum matches, then use the prepared name */
+			err = au_dr_lkup_name(&args, bindex);
+			if (unlikely(err))
+				goto out_parent;
+		}
+
+		h_dir = d_inode(h_parent);
+		inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
+		h_dentry = au_do_lookup(h_parent, dentry, bindex, &args);
+		inode_unlock_shared(h_dir);
+		err = PTR_ERR(h_dentry);
+		if (IS_ERR(h_dentry))
+			goto out_parent;
+		if (h_dentry)
+			au_fclr_lkup(args.flags, ALLOW_NEG);
+		if (dirperm1)
+			au_fset_lkup(args.flags, IGNORE_PERM);
+
+		if (au_dbwh(dentry) == bindex)
+			break;
+		if (!h_dentry)
+			continue;
+		if (d_is_negative(h_dentry))
+			continue;
+		h_inode = d_inode(h_dentry);
+		npositive++;
+		if (!args.type)
+			args.type = h_inode->i_mode & S_IFMT;
+		if (args.type != S_IFDIR)
+			break;
+		else if (isdir) {
+			/* the type of lower may be different */
+			bdiropq = au_dbdiropq(dentry);
+			if (bdiropq >= 0 && bdiropq <= bindex)
+				break;
+		}
+		br = au_sbr(sb, bindex);
+		if (dirren
+		    && au_dr_hino_test_add(&br->br_dirren, h_inode->i_ino,
+					   /*add_ent*/NULL)) {
+			/* prepare next name to lookup */
+			err = au_dr_lkup(&args, dentry, bindex);
+			if (unlikely(err))
+				goto out_parent;
+		}
+	}
+
+	if (npositive) {
+		AuLabel(positive);
+		au_update_dbtop(dentry);
+	}
+	err = npositive;
+	if (unlikely(!au_opt_test(au_mntflags(sb), UDBA_NONE)
+		     && au_dbtop(dentry) < 0)) {
+		err = -EIO;
+		AuIOErr("both of real entry and whiteout found, %pd, err %d\n",
+			dentry, err);
+	}
+
+out_parent:
+	dput(parent);
+	au_kfree_try_rcu(args.whname.name);
+	if (dirren)
+		au_dr_lkup_fin(&args);
+out:
+	return err;
+}
+
+struct dentry *au_sio_lkup_one(struct user_namespace *userns, struct qstr *name,
+			       struct path *ppath)
+{
+	struct dentry *dentry;
+	int wkq_err;
+
+	if (!au_test_h_perm_sio(userns, d_inode(ppath->dentry), MAY_EXEC))
+		dentry = vfsub_lkup_one(name, ppath);
+	else {
+		struct vfsub_lkup_one_args args = {
+			.errp	= &dentry,
+			.name	= name,
+			.ppath	= ppath
+		};
+
+		wkq_err = au_wkq_wait(vfsub_call_lkup_one, &args);
+		if (unlikely(wkq_err))
+			dentry = ERR_PTR(wkq_err);
+	}
+
+	return dentry;
+}
+
+/*
+ * lookup @dentry on @bindex which should be negative.
+ */
+int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh)
+{
+	int err;
+	struct dentry *parent, *h_dentry;
+	struct au_branch *br;
+	struct user_namespace *h_userns;
+	struct path h_ppath;
+
+	parent = dget_parent(dentry);
+	br = au_sbr(dentry->d_sb, bindex);
+	h_ppath.dentry = au_h_dptr(parent, bindex);
+	h_ppath.mnt = au_br_mnt(br);
+	h_userns = au_br_userns(br);
+	if (wh)
+		h_dentry = au_whtmp_lkup(h_ppath.dentry, br, &dentry->d_name);
+	else
+		h_dentry = au_sio_lkup_one(h_userns, &dentry->d_name, &h_ppath);
+	err = PTR_ERR(h_dentry);
+	if (IS_ERR(h_dentry))
+		goto out;
+	if (unlikely(d_is_positive(h_dentry))) {
+		err = -EIO;
+		AuIOErr("%pd should be negative on b%d.\n", h_dentry, bindex);
+		dput(h_dentry);
+		goto out;
+	}
+
+	err = 0;
+	if (bindex < au_dbtop(dentry))
+		au_set_dbtop(dentry, bindex);
+	if (au_dbbot(dentry) < bindex)
+		au_set_dbbot(dentry, bindex);
+	au_set_h_dptr(dentry, bindex, h_dentry);
+
+out:
+	dput(parent);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* subset of struct inode */
+struct au_iattr {
+	unsigned long		i_ino;
+	/* unsigned int		i_nlink; */
+	kuid_t			i_uid;
+	kgid_t			i_gid;
+	u64			i_version;
+/*
+	loff_t			i_size;
+	blkcnt_t		i_blocks;
+*/
+	umode_t			i_mode;
+};
+
+static void au_iattr_save(struct au_iattr *ia, struct inode *h_inode)
+{
+	ia->i_ino = h_inode->i_ino;
+	/* ia->i_nlink = h_inode->i_nlink; */
+	ia->i_uid = h_inode->i_uid;
+	ia->i_gid = h_inode->i_gid;
+	ia->i_version = inode_query_iversion(h_inode);
+/*
+	ia->i_size = h_inode->i_size;
+	ia->i_blocks = h_inode->i_blocks;
+*/
+	ia->i_mode = (h_inode->i_mode & S_IFMT);
+}
+
+static int au_iattr_test(struct au_iattr *ia, struct inode *h_inode)
+{
+	return ia->i_ino != h_inode->i_ino
+		/* || ia->i_nlink != h_inode->i_nlink */
+		|| !uid_eq(ia->i_uid, h_inode->i_uid)
+		|| !gid_eq(ia->i_gid, h_inode->i_gid)
+		|| !inode_eq_iversion(h_inode, ia->i_version)
+/*
+		|| ia->i_size != h_inode->i_size
+		|| ia->i_blocks != h_inode->i_blocks
+*/
+		|| ia->i_mode != (h_inode->i_mode & S_IFMT);
+}
+
+static int au_h_verify_dentry(struct dentry *h_dentry, struct dentry *h_parent,
+			      struct au_branch *br)
+{
+	int err;
+	struct au_iattr ia;
+	struct inode *h_inode;
+	struct dentry *h_d;
+	struct super_block *h_sb;
+	struct path h_ppath;
+
+	err = 0;
+	memset(&ia, -1, sizeof(ia));
+	h_sb = h_dentry->d_sb;
+	h_inode = NULL;
+	if (d_is_positive(h_dentry)) {
+		h_inode = d_inode(h_dentry);
+		au_iattr_save(&ia, h_inode);
+	} else if (au_test_nfs(h_sb) || au_test_fuse(h_sb))
+		/* nfs d_revalidate may return 0 for negative dentry */
+		/* fuse d_revalidate always return 0 for negative dentry */
+		goto out;
+
+	/* main purpose is namei.c:cached_lookup() and d_revalidate */
+	h_ppath.dentry = h_parent;
+	h_ppath.mnt = au_br_mnt(br);
+	h_d = vfsub_lkup_one(&h_dentry->d_name, &h_ppath);
+	err = PTR_ERR(h_d);
+	if (IS_ERR(h_d))
+		goto out;
+
+	err = 0;
+	if (unlikely(h_d != h_dentry
+		     || d_inode(h_d) != h_inode
+		     || (h_inode && au_iattr_test(&ia, h_inode))))
+		err = au_busy_or_stale();
+	dput(h_d);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir,
+		struct dentry *h_parent, struct au_branch *br)
+{
+	int err;
+
+	err = 0;
+	if (udba == AuOpt_UDBA_REVAL
+	    && !au_test_fs_remote(h_dentry->d_sb)) {
+		IMustLock(h_dir);
+		err = (d_inode(h_dentry->d_parent) != h_dir);
+	} else if (udba != AuOpt_UDBA_NONE)
+		err = au_h_verify_dentry(h_dentry, h_parent, br);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_refresh_hdentry(struct dentry *dentry, struct dentry *parent)
+{
+	int err;
+	aufs_bindex_t new_bindex, bindex, bbot, bwh, bdiropq;
+	struct au_hdentry tmp, *p, *q;
+	struct au_dinfo *dinfo;
+	struct super_block *sb;
+
+	DiMustWriteLock(dentry);
+
+	sb = dentry->d_sb;
+	dinfo = au_di(dentry);
+	bbot = dinfo->di_bbot;
+	bwh = dinfo->di_bwh;
+	bdiropq = dinfo->di_bdiropq;
+	bindex = dinfo->di_btop;
+	p = au_hdentry(dinfo, bindex);
+	for (; bindex <= bbot; bindex++, p++) {
+		if (!p->hd_dentry)
+			continue;
+
+		new_bindex = au_br_index(sb, p->hd_id);
+		if (new_bindex == bindex)
+			continue;
+
+		if (dinfo->di_bwh == bindex)
+			bwh = new_bindex;
+		if (dinfo->di_bdiropq == bindex)
+			bdiropq = new_bindex;
+		if (new_bindex < 0) {
+			au_hdput(p);
+			p->hd_dentry = NULL;
+			continue;
+		}
+
+		/* swap two lower dentries, and loop again */
+		q = au_hdentry(dinfo, new_bindex);
+		tmp = *q;
+		*q = *p;
+		*p = tmp;
+		if (tmp.hd_dentry) {
+			bindex--;
+			p--;
+		}
+	}
+
+	dinfo->di_bwh = -1;
+	if (bwh >= 0 && bwh <= au_sbbot(sb) && au_sbr_whable(sb, bwh))
+		dinfo->di_bwh = bwh;
+
+	dinfo->di_bdiropq = -1;
+	if (bdiropq >= 0
+	    && bdiropq <= au_sbbot(sb)
+	    && au_sbr_whable(sb, bdiropq))
+		dinfo->di_bdiropq = bdiropq;
+
+	err = -EIO;
+	dinfo->di_btop = -1;
+	dinfo->di_bbot = -1;
+	bbot = au_dbbot(parent);
+	bindex = 0;
+	p = au_hdentry(dinfo, bindex);
+	for (; bindex <= bbot; bindex++, p++)
+		if (p->hd_dentry) {
+			dinfo->di_btop = bindex;
+			break;
+		}
+
+	if (dinfo->di_btop >= 0) {
+		bindex = bbot;
+		p = au_hdentry(dinfo, bindex);
+		for (; bindex >= 0; bindex--, p--)
+			if (p->hd_dentry) {
+				dinfo->di_bbot = bindex;
+				err = 0;
+				break;
+			}
+	}
+
+	return err;
+}
+
+static void au_do_hide(struct dentry *dentry)
+{
+	struct inode *inode;
+
+	if (d_really_is_positive(dentry)) {
+		inode = d_inode(dentry);
+		if (!d_is_dir(dentry)) {
+			if (inode->i_nlink && !d_unhashed(dentry))
+				drop_nlink(inode);
+		} else {
+			clear_nlink(inode);
+			/* stop next lookup */
+			inode->i_flags |= S_DEAD;
+		}
+		smp_mb(); /* necessary? */
+	}
+	d_drop(dentry);
+}
+
+static int au_hide_children(struct dentry *parent)
+{
+	int err, i, j, ndentry;
+	struct au_dcsub_pages dpages;
+	struct au_dpage *dpage;
+	struct dentry *dentry;
+
+	err = au_dpages_init(&dpages, GFP_NOFS);
+	if (unlikely(err))
+		goto out;
+	err = au_dcsub_pages(&dpages, parent, NULL, NULL);
+	if (unlikely(err))
+		goto out_dpages;
+
+	/* in reverse order */
+	for (i = dpages.ndpage - 1; i >= 0; i--) {
+		dpage = dpages.dpages + i;
+		ndentry = dpage->ndentry;
+		for (j = ndentry - 1; j >= 0; j--) {
+			dentry = dpage->dentries[j];
+			if (dentry != parent)
+				au_do_hide(dentry);
+		}
+	}
+
+out_dpages:
+	au_dpages_free(&dpages);
+out:
+	return err;
+}
+
+static void au_hide(struct dentry *dentry)
+{
+	int err;
+
+	AuDbgDentry(dentry);
+	if (d_is_dir(dentry)) {
+		/* shrink_dcache_parent(dentry); */
+		err = au_hide_children(dentry);
+		if (unlikely(err))
+			AuIOErr("%pd, failed hiding children, ignored %d\n",
+				dentry, err);
+	}
+	au_do_hide(dentry);
+}
+
+/*
+ * By adding a dirty branch, a cached dentry may be affected in various ways.
+ *
+ * a dirty branch is added
+ * - on the top of layers
+ * - in the middle of layers
+ * - to the bottom of layers
+ *
+ * on the added branch there exists
+ * - a whiteout
+ * - a diropq
+ * - a same named entry
+ *   + exist
+ *     * negative --> positive
+ *     * positive --> positive
+ *	 - type is unchanged
+ *	 - type is changed
+ *   + doesn't exist
+ *     * negative --> negative
+ *     * positive --> negative (rejected by au_br_del() for non-dir case)
+ * - none
+ */
+static int au_refresh_by_dinfo(struct dentry *dentry, struct au_dinfo *dinfo,
+			       struct au_dinfo *tmp)
+{
+	int err;
+	aufs_bindex_t bindex, bbot;
+	struct {
+		struct dentry *dentry;
+		struct inode *inode;
+		mode_t mode;
+	} orig_h, tmp_h = {
+		.dentry = NULL
+	};
+	struct au_hdentry *hd;
+	struct inode *inode, *h_inode;
+	struct dentry *h_dentry;
+
+	err = 0;
+	AuDebugOn(dinfo->di_btop < 0);
+	orig_h.mode = 0;
+	orig_h.dentry = au_hdentry(dinfo, dinfo->di_btop)->hd_dentry;
+	orig_h.inode = NULL;
+	if (d_is_positive(orig_h.dentry)) {
+		orig_h.inode = d_inode(orig_h.dentry);
+		orig_h.mode = orig_h.inode->i_mode & S_IFMT;
+	}
+	if (tmp->di_btop >= 0) {
+		tmp_h.dentry = au_hdentry(tmp, tmp->di_btop)->hd_dentry;
+		if (d_is_positive(tmp_h.dentry)) {
+			tmp_h.inode = d_inode(tmp_h.dentry);
+			tmp_h.mode = tmp_h.inode->i_mode & S_IFMT;
+		}
+	}
+
+	inode = NULL;
+	if (d_really_is_positive(dentry))
+		inode = d_inode(dentry);
+	if (!orig_h.inode) {
+		AuDbg("negative originally\n");
+		if (inode) {
+			au_hide(dentry);
+			goto out;
+		}
+		AuDebugOn(inode);
+		AuDebugOn(dinfo->di_btop != dinfo->di_bbot);
+		AuDebugOn(dinfo->di_bdiropq != -1);
+
+		if (!tmp_h.inode) {
+			AuDbg("negative --> negative\n");
+			/* should have only one negative lower */
+			if (tmp->di_btop >= 0
+			    && tmp->di_btop < dinfo->di_btop) {
+				AuDebugOn(tmp->di_btop != tmp->di_bbot);
+				AuDebugOn(dinfo->di_btop != dinfo->di_bbot);
+				au_set_h_dptr(dentry, dinfo->di_btop, NULL);
+				au_di_cp(dinfo, tmp);
+				hd = au_hdentry(tmp, tmp->di_btop);
+				au_set_h_dptr(dentry, tmp->di_btop,
+					      dget(hd->hd_dentry));
+			}
+			au_dbg_verify_dinode(dentry);
+		} else {
+			AuDbg("negative --> positive\n");
+			/*
+			 * similar to the behaviour of creating with bypassing
+			 * aufs.
+			 * unhash it in order to force an error in the
+			 * succeeding create operation.
+			 * we should not set S_DEAD here.
+			 */
+			d_drop(dentry);
+			/* au_di_swap(tmp, dinfo); */
+			au_dbg_verify_dinode(dentry);
+		}
+	} else {
+		AuDbg("positive originally\n");
+		/* inode may be NULL */
+		AuDebugOn(inode && (inode->i_mode & S_IFMT) != orig_h.mode);
+		if (!tmp_h.inode) {
+			AuDbg("positive --> negative\n");
+			/* or bypassing aufs */
+			au_hide(dentry);
+			if (tmp->di_bwh >= 0 && tmp->di_bwh <= dinfo->di_btop)
+				dinfo->di_bwh = tmp->di_bwh;
+			if (inode)
+				err = au_refresh_hinode_self(inode);
+			au_dbg_verify_dinode(dentry);
+		} else if (orig_h.mode == tmp_h.mode) {
+			AuDbg("positive --> positive, same type\n");
+			if (!S_ISDIR(orig_h.mode)
+			    && dinfo->di_btop > tmp->di_btop) {
+				/*
+				 * similar to the behaviour of removing and
+				 * creating.
+				 */
+				au_hide(dentry);
+				if (inode)
+					err = au_refresh_hinode_self(inode);
+				au_dbg_verify_dinode(dentry);
+			} else {
+				/* fill empty slots */
+				if (dinfo->di_btop > tmp->di_btop)
+					dinfo->di_btop = tmp->di_btop;
+				if (dinfo->di_bbot < tmp->di_bbot)
+					dinfo->di_bbot = tmp->di_bbot;
+				dinfo->di_bwh = tmp->di_bwh;
+				dinfo->di_bdiropq = tmp->di_bdiropq;
+				bbot = dinfo->di_bbot;
+				bindex = tmp->di_btop;
+				hd = au_hdentry(tmp, bindex);
+				for (; bindex <= bbot; bindex++, hd++) {
+					if (au_h_dptr(dentry, bindex))
+						continue;
+					h_dentry = hd->hd_dentry;
+					if (!h_dentry)
+						continue;
+					AuDebugOn(d_is_negative(h_dentry));
+					h_inode = d_inode(h_dentry);
+					AuDebugOn(orig_h.mode
+						  != (h_inode->i_mode
+						      & S_IFMT));
+					au_set_h_dptr(dentry, bindex,
+						      dget(h_dentry));
+				}
+				if (inode)
+					err = au_refresh_hinode(inode, dentry);
+				au_dbg_verify_dinode(dentry);
+			}
+		} else {
+			AuDbg("positive --> positive, different type\n");
+			/* similar to the behaviour of removing and creating */
+			au_hide(dentry);
+			if (inode)
+				err = au_refresh_hinode_self(inode);
+			au_dbg_verify_dinode(dentry);
+		}
+	}
+
+out:
+	return err;
+}
+
+void au_refresh_dop(struct dentry *dentry, int force_reval)
+{
+	const struct dentry_operations *dop
+		= force_reval ? &aufs_dop : dentry->d_sb->s_d_op;
+	static const unsigned int mask
+		= DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE;
+
+	BUILD_BUG_ON(sizeof(mask) != sizeof(dentry->d_flags));
+
+	if (dentry->d_op == dop)
+		return;
+
+	AuDbg("%pd\n", dentry);
+	spin_lock(&dentry->d_lock);
+	if (dop == &aufs_dop)
+		dentry->d_flags |= mask;
+	else
+		dentry->d_flags &= ~mask;
+	dentry->d_op = dop;
+	spin_unlock(&dentry->d_lock);
+}
+
+int au_refresh_dentry(struct dentry *dentry, struct dentry *parent)
+{
+	int err, ebrange, nbr;
+	unsigned int sigen;
+	struct au_dinfo *dinfo, *tmp;
+	struct super_block *sb;
+	struct inode *inode;
+
+	DiMustWriteLock(dentry);
+	AuDebugOn(IS_ROOT(dentry));
+	AuDebugOn(d_really_is_negative(parent));
+
+	sb = dentry->d_sb;
+	sigen = au_sigen(sb);
+	err = au_digen_test(parent, sigen);
+	if (unlikely(err))
+		goto out;
+
+	nbr = au_sbbot(sb) + 1;
+	dinfo = au_di(dentry);
+	err = au_di_realloc(dinfo, nbr, /*may_shrink*/0);
+	if (unlikely(err))
+		goto out;
+	ebrange = au_dbrange_test(dentry);
+	if (!ebrange)
+		ebrange = au_do_refresh_hdentry(dentry, parent);
+
+	if (d_unhashed(dentry) || ebrange /* || dinfo->di_tmpfile */) {
+		AuDebugOn(au_dbtop(dentry) < 0 && au_dbbot(dentry) >= 0);
+		if (d_really_is_positive(dentry)) {
+			inode = d_inode(dentry);
+			err = au_refresh_hinode_self(inode);
+		}
+		au_dbg_verify_dinode(dentry);
+		if (!err)
+			goto out_dgen; /* success */
+		goto out;
+	}
+
+	/* temporary dinfo */
+	AuDbgDentry(dentry);
+	err = -ENOMEM;
+	tmp = au_di_alloc(sb, AuLsc_DI_TMP);
+	if (unlikely(!tmp))
+		goto out;
+	au_di_swap(tmp, dinfo);
+	/* returns the number of positive dentries */
+	/*
+	 * if current working dir is removed, it returns an error.
+	 * but the dentry is legal.
+	 */
+	err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG);
+	AuDbgDentry(dentry);
+	au_di_swap(tmp, dinfo);
+	if (err == -ENOENT)
+		err = 0;
+	if (err >= 0) {
+		/* compare/refresh by dinfo */
+		AuDbgDentry(dentry);
+		err = au_refresh_by_dinfo(dentry, dinfo, tmp);
+		au_dbg_verify_dinode(dentry);
+		AuTraceErr(err);
+	}
+	au_di_realloc(dinfo, nbr, /*may_shrink*/1); /* harmless if err */
+	au_rw_write_unlock(&tmp->di_rwsem);
+	au_di_free(tmp);
+	if (unlikely(err))
+		goto out;
+
+out_dgen:
+	au_update_digen(dentry);
+out:
+	if (unlikely(err && !(dentry->d_flags & DCACHE_NFSFS_RENAMED))) {
+		AuIOErr("failed refreshing %pd, %d\n", dentry, err);
+		AuDbgDentry(dentry);
+	}
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_do_h_d_reval(struct dentry *h_dentry, unsigned int flags,
+			   struct dentry *dentry, aufs_bindex_t bindex)
+{
+	int err, valid;
+
+	err = 0;
+	if (!(h_dentry->d_flags & DCACHE_OP_REVALIDATE))
+		goto out;
+
+	AuDbg("b%d\n", bindex);
+	/*
+	 * gave up supporting LOOKUP_CREATE/OPEN for lower fs,
+	 * due to whiteout and branch permission.
+	 */
+	flags &= ~(/*LOOKUP_PARENT |*/ LOOKUP_OPEN | LOOKUP_CREATE
+		   | LOOKUP_FOLLOW | LOOKUP_EXCL);
+	/* it may return tri-state */
+	valid = h_dentry->d_op->d_revalidate(h_dentry, flags);
+
+	if (unlikely(valid < 0))
+		err = valid;
+	else if (!valid)
+		err = -EINVAL;
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* todo: remove this */
+static int h_d_revalidate(struct dentry *dentry, struct inode *inode,
+			  unsigned int flags, int do_udba, int dirren)
+{
+	int err;
+	umode_t mode, h_mode;
+	aufs_bindex_t bindex, btail, btop, ibs, ibe;
+	unsigned char plus, unhashed, is_root, h_plus, h_nfs, tmpfile;
+	struct inode *h_inode, *h_cached_inode;
+	struct dentry *h_dentry;
+	struct qstr *name, *h_name;
+
+	err = 0;
+	plus = 0;
+	mode = 0;
+	ibs = -1;
+	ibe = -1;
+	unhashed = !!d_unhashed(dentry);
+	is_root = !!IS_ROOT(dentry);
+	name = &dentry->d_name;
+	tmpfile = au_di(dentry)->di_tmpfile;
+
+	/*
+	 * Theoretically, REVAL test should be unnecessary in case of
+	 * {FS,I}NOTIFY.
+	 * But {fs,i}notify doesn't fire some necessary events,
+	 *	IN_ATTRIB for atime/nlink/pageio
+	 * Let's do REVAL test too.
+	 */
+	if (do_udba && inode) {
+		mode = (inode->i_mode & S_IFMT);
+		plus = (inode->i_nlink > 0);
+		ibs = au_ibtop(inode);
+		ibe = au_ibbot(inode);
+	}
+
+	btop = au_dbtop(dentry);
+	btail = btop;
+	if (inode && S_ISDIR(inode->i_mode))
+		btail = au_dbtaildir(dentry);
+	for (bindex = btop; bindex <= btail; bindex++) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (!h_dentry)
+			continue;
+
+		AuDbg("b%d, %pd\n", bindex, h_dentry);
+		h_nfs = !!au_test_nfs(h_dentry->d_sb);
+		spin_lock(&h_dentry->d_lock);
+		h_name = &h_dentry->d_name;
+		if (unlikely(do_udba
+			     && !is_root
+			     && ((!h_nfs
+				  && (unhashed != !!d_unhashed(h_dentry)
+				      || (!tmpfile && !dirren
+					  && !au_qstreq(name, h_name))
+					  ))
+				 || (h_nfs
+				     && !(flags & LOOKUP_OPEN)
+				     && (h_dentry->d_flags
+					 & DCACHE_NFSFS_RENAMED)))
+			    )) {
+			int h_unhashed;
+
+			h_unhashed = d_unhashed(h_dentry);
+			spin_unlock(&h_dentry->d_lock);
+			AuDbg("unhash 0x%x 0x%x, %pd %pd\n",
+			      unhashed, h_unhashed, dentry, h_dentry);
+			goto err;
+		}
+		spin_unlock(&h_dentry->d_lock);
+
+		err = au_do_h_d_reval(h_dentry, flags, dentry, bindex);
+		if (unlikely(err))
+			/* do not goto err, to keep the errno */
+			break;
+
+		/* todo: plink too? */
+		if (!do_udba)
+			continue;
+
+		/* UDBA tests */
+		if (unlikely(!!inode != d_is_positive(h_dentry)))
+			goto err;
+
+		h_inode = NULL;
+		if (d_is_positive(h_dentry))
+			h_inode = d_inode(h_dentry);
+		h_plus = plus;
+		h_mode = mode;
+		h_cached_inode = h_inode;
+		if (h_inode) {
+			h_mode = (h_inode->i_mode & S_IFMT);
+			h_plus = (h_inode->i_nlink > 0);
+		}
+		if (inode && ibs <= bindex && bindex <= ibe)
+			h_cached_inode = au_h_iptr(inode, bindex);
+
+		if (!h_nfs) {
+			if (unlikely(plus != h_plus && !tmpfile))
+				goto err;
+		} else {
+			if (unlikely(!(h_dentry->d_flags & DCACHE_NFSFS_RENAMED)
+				     && !is_root
+				     && !IS_ROOT(h_dentry)
+				     && unhashed != d_unhashed(h_dentry)))
+				goto err;
+		}
+		if (unlikely(mode != h_mode
+			     || h_cached_inode != h_inode))
+			goto err;
+		continue;
+
+err:
+		err = -EINVAL;
+		break;
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+/* todo: consolidate with do_refresh() and au_reval_for_attr() */
+static int simple_reval_dpath(struct dentry *dentry, unsigned int sigen)
+{
+	int err;
+	struct dentry *parent;
+
+	if (!au_digen_test(dentry, sigen))
+		return 0;
+
+	parent = dget_parent(dentry);
+	di_read_lock_parent(parent, AuLock_IR);
+	AuDebugOn(au_digen_test(parent, sigen));
+	au_dbg_verify_gen(parent, sigen);
+	err = au_refresh_dentry(dentry, parent);
+	di_read_unlock(parent, AuLock_IR);
+	dput(parent);
+	AuTraceErr(err);
+	return err;
+}
+
+int au_reval_dpath(struct dentry *dentry, unsigned int sigen)
+{
+	int err;
+	struct dentry *d, *parent;
+
+	if (!au_ftest_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR))
+		return simple_reval_dpath(dentry, sigen);
+
+	/* slow loop, keep it simple and stupid */
+	/* cf: au_cpup_dirs() */
+	err = 0;
+	parent = NULL;
+	while (au_digen_test(dentry, sigen)) {
+		d = dentry;
+		while (1) {
+			dput(parent);
+			parent = dget_parent(d);
+			if (!au_digen_test(parent, sigen))
+				break;
+			d = parent;
+		}
+
+		if (d != dentry)
+			di_write_lock_child2(d);
+
+		/* someone might update our dentry while we were sleeping */
+		if (au_digen_test(d, sigen)) {
+			/*
+			 * todo: consolidate with simple_reval_dpath(),
+			 * do_refresh() and au_reval_for_attr().
+			 */
+			di_read_lock_parent(parent, AuLock_IR);
+			err = au_refresh_dentry(d, parent);
+			di_read_unlock(parent, AuLock_IR);
+		}
+
+		if (d != dentry)
+			di_write_unlock(d);
+		dput(parent);
+		if (unlikely(err))
+			break;
+	}
+
+	return err;
+}
+
+/*
+ * if valid returns 1, otherwise 0.
+ */
+static int aufs_d_revalidate(struct dentry *dentry, unsigned int flags)
+{
+	int valid, err;
+	unsigned int sigen;
+	unsigned char do_udba, dirren;
+	struct super_block *sb;
+	struct inode *inode;
+
+	/* todo: support rcu-walk? */
+	if (flags & LOOKUP_RCU)
+		return -ECHILD;
+
+	valid = 0;
+	if (unlikely(!au_di(dentry)))
+		goto out;
+
+	valid = 1;
+	sb = dentry->d_sb;
+	/*
+	 * todo: very ugly
+	 * i_mutex of parent dir may be held,
+	 * but we should not return 'invalid' due to busy.
+	 */
+	err = aufs_read_lock(dentry, AuLock_FLUSH | AuLock_DW | AuLock_NOPLM);
+	if (unlikely(err)) {
+		valid = err;
+		AuTraceErr(err);
+		goto out;
+	}
+	inode = NULL;
+	if (d_really_is_positive(dentry))
+		inode = d_inode(dentry);
+	if (unlikely(inode && au_is_bad_inode(inode))) {
+		err = -EINVAL;
+		AuTraceErr(err);
+		goto out_dgrade;
+	}
+	if (unlikely(au_dbrange_test(dentry))) {
+		err = -EINVAL;
+		AuTraceErr(err);
+		goto out_dgrade;
+	}
+
+	sigen = au_sigen(sb);
+	if (au_digen_test(dentry, sigen)) {
+		AuDebugOn(IS_ROOT(dentry));
+		err = au_reval_dpath(dentry, sigen);
+		if (unlikely(err)) {
+			AuTraceErr(err);
+			goto out_dgrade;
+		}
+	}
+	di_downgrade_lock(dentry, AuLock_IR);
+
+	err = -EINVAL;
+	if (!(flags & (LOOKUP_OPEN | LOOKUP_EMPTY))
+	    && inode
+	    && !(inode->i_state && I_LINKABLE)
+	    && (IS_DEADDIR(inode) || !inode->i_nlink)) {
+		AuTraceErr(err);
+		goto out_inval;
+	}
+
+	do_udba = !au_opt_test(au_mntflags(sb), UDBA_NONE);
+	if (do_udba && inode) {
+		aufs_bindex_t btop = au_ibtop(inode);
+		struct inode *h_inode;
+
+		if (btop >= 0) {
+			h_inode = au_h_iptr(inode, btop);
+			if (h_inode && au_test_higen(inode, h_inode)) {
+				AuTraceErr(err);
+				goto out_inval;
+			}
+		}
+	}
+
+	dirren = !!au_opt_test(au_mntflags(sb), DIRREN);
+	err = h_d_revalidate(dentry, inode, flags, do_udba, dirren);
+	if (unlikely(!err && do_udba && au_dbtop(dentry) < 0)) {
+		err = -EIO;
+		AuDbg("both of real entry and whiteout found, %p, err %d\n",
+		      dentry, err);
+	}
+	goto out_inval;
+
+out_dgrade:
+	di_downgrade_lock(dentry, AuLock_IR);
+out_inval:
+	aufs_read_unlock(dentry, AuLock_IR);
+	AuTraceErr(err);
+	valid = !err;
+out:
+	if (!valid) {
+		AuDbg("%pd invalid, %d\n", dentry, valid);
+		d_drop(dentry);
+	}
+	return valid;
+}
+
+static void aufs_d_release(struct dentry *dentry)
+{
+	if (au_di(dentry)) {
+		au_di_fin(dentry);
+		au_hn_di_reinit(dentry);
+	}
+}
+
+const struct dentry_operations aufs_dop = {
+	.d_revalidate		= aufs_d_revalidate,
+	.d_weak_revalidate	= aufs_d_revalidate,
+	.d_release		= aufs_d_release
+};
+
+/* aufs_dop without d_revalidate */
+const struct dentry_operations aufs_dop_noreval = {
+	.d_release		= aufs_d_release
+};
diff -Naur --no-dereference a/fs/aufs/dentry.h b/fs/aufs/dentry.h
--- a/fs/aufs/dentry.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dentry.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,269 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * lookup and dentry operations
+ */
+
+#ifndef __AUFS_DENTRY_H__
+#define __AUFS_DENTRY_H__
+
+#ifdef __KERNEL__
+
+#include <linux/dcache.h>
+#include "dirren.h"
+#include "rwsem.h"
+
+struct au_hdentry {
+	struct dentry		*hd_dentry;
+	aufs_bindex_t		hd_id;
+};
+
+struct au_dinfo {
+	atomic_t		di_generation;
+
+	struct au_rwsem		di_rwsem;
+	aufs_bindex_t		di_btop, di_bbot, di_bwh, di_bdiropq;
+	unsigned char		di_tmpfile; /* to allow the different name */
+	struct au_hdentry	*di_hdentry;
+	struct rcu_head		rcu;
+} ____cacheline_aligned_in_smp;
+
+/* ---------------------------------------------------------------------- */
+
+/* flags for au_lkup_dentry() */
+#define AuLkup_ALLOW_NEG	1
+#define AuLkup_IGNORE_PERM	(1 << 1)
+#define AuLkup_DIRREN		(1 << 2)
+#define au_ftest_lkup(flags, name)	((flags) & AuLkup_##name)
+#define au_fset_lkup(flags, name) \
+	do { (flags) |= AuLkup_##name; } while (0)
+#define au_fclr_lkup(flags, name) \
+	do { (flags) &= ~AuLkup_##name; } while (0)
+
+#ifndef CONFIG_AUFS_DIRREN
+#undef AuLkup_DIRREN
+#define AuLkup_DIRREN 0
+#endif
+
+struct au_do_lookup_args {
+	unsigned int		flags;
+	mode_t			type;
+	struct qstr		whname, *name;
+	struct au_dr_lookup	dirren;
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* dentry.c */
+extern const struct dentry_operations aufs_dop, aufs_dop_noreval;
+struct au_branch;
+struct dentry *au_sio_lkup_one(struct user_namespace *userns, struct qstr *name,
+			       struct path *ppath);
+int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir,
+		struct dentry *h_parent, struct au_branch *br);
+
+int au_lkup_dentry(struct dentry *dentry, aufs_bindex_t btop,
+		   unsigned int flags);
+int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh);
+int au_refresh_dentry(struct dentry *dentry, struct dentry *parent);
+int au_reval_dpath(struct dentry *dentry, unsigned int sigen);
+void au_refresh_dop(struct dentry *dentry, int force_reval);
+
+/* dinfo.c */
+void au_di_init_once(void *_di);
+struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc);
+void au_di_free(struct au_dinfo *dinfo);
+void au_di_swap(struct au_dinfo *a, struct au_dinfo *b);
+void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src);
+int au_di_init(struct dentry *dentry);
+void au_di_fin(struct dentry *dentry);
+int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink);
+
+void di_read_lock(struct dentry *d, int flags, unsigned int lsc);
+void di_read_unlock(struct dentry *d, int flags);
+void di_downgrade_lock(struct dentry *d, int flags);
+void di_write_lock(struct dentry *d, unsigned int lsc);
+void di_write_unlock(struct dentry *d);
+void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir);
+void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir);
+void di_write_unlock2(struct dentry *d1, struct dentry *d2);
+
+struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex);
+struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex);
+aufs_bindex_t au_dbtail(struct dentry *dentry);
+aufs_bindex_t au_dbtaildir(struct dentry *dentry);
+
+void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex,
+		   struct dentry *h_dentry);
+int au_digen_test(struct dentry *dentry, unsigned int sigen);
+int au_dbrange_test(struct dentry *dentry);
+void au_update_digen(struct dentry *dentry);
+void au_update_dbrange(struct dentry *dentry, int do_put_zero);
+void au_update_dbtop(struct dentry *dentry);
+void au_update_dbbot(struct dentry *dentry);
+int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry);
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_dinfo *au_di(struct dentry *dentry)
+{
+	return dentry->d_fsdata;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* lock subclass for dinfo */
+enum {
+	AuLsc_DI_CHILD,		/* child first */
+	AuLsc_DI_CHILD2,	/* rename(2), link(2), and cpup at hnotify */
+	AuLsc_DI_CHILD3,	/* copyup dirs */
+	AuLsc_DI_PARENT,
+	AuLsc_DI_PARENT2,
+	AuLsc_DI_PARENT3,
+	AuLsc_DI_TMP		/* temp for replacing dinfo */
+};
+
+/*
+ * di_read_lock_child, di_write_lock_child,
+ * di_read_lock_child2, di_write_lock_child2,
+ * di_read_lock_child3, di_write_lock_child3,
+ * di_read_lock_parent, di_write_lock_parent,
+ * di_read_lock_parent2, di_write_lock_parent2,
+ * di_read_lock_parent3, di_write_lock_parent3,
+ */
+#define AuReadLockFunc(name, lsc) \
+static inline void di_read_lock_##name(struct dentry *d, int flags) \
+{ di_read_lock(d, flags, AuLsc_DI_##lsc); }
+
+#define AuWriteLockFunc(name, lsc) \
+static inline void di_write_lock_##name(struct dentry *d) \
+{ di_write_lock(d, AuLsc_DI_##lsc); }
+
+#define AuRWLockFuncs(name, lsc) \
+	AuReadLockFunc(name, lsc) \
+	AuWriteLockFunc(name, lsc)
+
+AuRWLockFuncs(child, CHILD);
+AuRWLockFuncs(child2, CHILD2);
+AuRWLockFuncs(child3, CHILD3);
+AuRWLockFuncs(parent, PARENT);
+AuRWLockFuncs(parent2, PARENT2);
+AuRWLockFuncs(parent3, PARENT3);
+
+#undef AuReadLockFunc
+#undef AuWriteLockFunc
+#undef AuRWLockFuncs
+
+#define DiMustNoWaiters(d)	AuRwMustNoWaiters(&au_di(d)->di_rwsem)
+#define DiMustAnyLock(d)	AuRwMustAnyLock(&au_di(d)->di_rwsem)
+#define DiMustWriteLock(d)	AuRwMustWriteLock(&au_di(d)->di_rwsem)
+
+/* ---------------------------------------------------------------------- */
+
+/* todo: memory barrier? */
+static inline unsigned int au_digen(struct dentry *d)
+{
+	return atomic_read(&au_di(d)->di_generation);
+}
+
+static inline void au_h_dentry_init(struct au_hdentry *hdentry)
+{
+	hdentry->hd_dentry = NULL;
+}
+
+static inline struct au_hdentry *au_hdentry(struct au_dinfo *di,
+					    aufs_bindex_t bindex)
+{
+	return di->di_hdentry + bindex;
+}
+
+static inline void au_hdput(struct au_hdentry *hd)
+{
+	if (hd)
+		dput(hd->hd_dentry);
+}
+
+static inline aufs_bindex_t au_dbtop(struct dentry *dentry)
+{
+	DiMustAnyLock(dentry);
+	return au_di(dentry)->di_btop;
+}
+
+static inline aufs_bindex_t au_dbbot(struct dentry *dentry)
+{
+	DiMustAnyLock(dentry);
+	return au_di(dentry)->di_bbot;
+}
+
+static inline aufs_bindex_t au_dbwh(struct dentry *dentry)
+{
+	DiMustAnyLock(dentry);
+	return au_di(dentry)->di_bwh;
+}
+
+static inline aufs_bindex_t au_dbdiropq(struct dentry *dentry)
+{
+	DiMustAnyLock(dentry);
+	return au_di(dentry)->di_bdiropq;
+}
+
+/* todo: hard/soft set? */
+static inline void au_set_dbtop(struct dentry *dentry, aufs_bindex_t bindex)
+{
+	DiMustWriteLock(dentry);
+	au_di(dentry)->di_btop = bindex;
+}
+
+static inline void au_set_dbbot(struct dentry *dentry, aufs_bindex_t bindex)
+{
+	DiMustWriteLock(dentry);
+	au_di(dentry)->di_bbot = bindex;
+}
+
+static inline void au_set_dbwh(struct dentry *dentry, aufs_bindex_t bindex)
+{
+	DiMustWriteLock(dentry);
+	/* dbwh can be outside of btop - bbot range */
+	au_di(dentry)->di_bwh = bindex;
+}
+
+static inline void au_set_dbdiropq(struct dentry *dentry, aufs_bindex_t bindex)
+{
+	DiMustWriteLock(dentry);
+	au_di(dentry)->di_bdiropq = bindex;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_HNOTIFY
+static inline void au_digen_dec(struct dentry *d)
+{
+	atomic_dec(&au_di(d)->di_generation);
+}
+
+static inline void au_hn_di_reinit(struct dentry *dentry)
+{
+	dentry->d_fsdata = NULL;
+}
+#else
+AuStubVoid(au_hn_di_reinit, struct dentry *dentry __maybe_unused)
+#endif /* CONFIG_AUFS_HNOTIFY */
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DENTRY_H__ */
diff -Naur --no-dereference a/fs/aufs/dinfo.c b/fs/aufs/dinfo.c
--- a/fs/aufs/dinfo.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dinfo.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,554 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * dentry private data
+ */
+
+#include "aufs.h"
+
+void au_di_init_once(void *_dinfo)
+{
+	struct au_dinfo *dinfo = _dinfo;
+
+	au_rw_init(&dinfo->di_rwsem);
+}
+
+struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc)
+{
+	struct au_dinfo *dinfo;
+	int nbr, i;
+
+	dinfo = au_cache_alloc_dinfo();
+	if (unlikely(!dinfo))
+		goto out;
+
+	nbr = au_sbbot(sb) + 1;
+	if (nbr <= 0)
+		nbr = 1;
+	dinfo->di_hdentry = kcalloc(nbr, sizeof(*dinfo->di_hdentry), GFP_NOFS);
+	if (dinfo->di_hdentry) {
+		au_rw_write_lock_nested(&dinfo->di_rwsem, lsc);
+		dinfo->di_btop = -1;
+		dinfo->di_bbot = -1;
+		dinfo->di_bwh = -1;
+		dinfo->di_bdiropq = -1;
+		dinfo->di_tmpfile = 0;
+		for (i = 0; i < nbr; i++)
+			dinfo->di_hdentry[i].hd_id = -1;
+		goto out;
+	}
+
+	au_cache_free_dinfo(dinfo);
+	dinfo = NULL;
+
+out:
+	return dinfo;
+}
+
+void au_di_free(struct au_dinfo *dinfo)
+{
+	struct au_hdentry *p;
+	aufs_bindex_t bbot, bindex;
+
+	/* dentry may not be revalidated */
+	bindex = dinfo->di_btop;
+	if (bindex >= 0) {
+		bbot = dinfo->di_bbot;
+		p = au_hdentry(dinfo, bindex);
+		while (bindex++ <= bbot)
+			au_hdput(p++);
+	}
+	au_kfree_try_rcu(dinfo->di_hdentry);
+	au_cache_free_dinfo(dinfo);
+}
+
+void au_di_swap(struct au_dinfo *a, struct au_dinfo *b)
+{
+	struct au_hdentry *p;
+	aufs_bindex_t bi;
+
+	AuRwMustWriteLock(&a->di_rwsem);
+	AuRwMustWriteLock(&b->di_rwsem);
+
+#define DiSwap(v, name)				\
+	do {					\
+		v = a->di_##name;		\
+		a->di_##name = b->di_##name;	\
+		b->di_##name = v;		\
+	} while (0)
+
+	DiSwap(p, hdentry);
+	DiSwap(bi, btop);
+	DiSwap(bi, bbot);
+	DiSwap(bi, bwh);
+	DiSwap(bi, bdiropq);
+	/* smp_mb(); */
+
+#undef DiSwap
+}
+
+void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src)
+{
+	AuRwMustWriteLock(&dst->di_rwsem);
+	AuRwMustWriteLock(&src->di_rwsem);
+
+	dst->di_btop = src->di_btop;
+	dst->di_bbot = src->di_bbot;
+	dst->di_bwh = src->di_bwh;
+	dst->di_bdiropq = src->di_bdiropq;
+	/* smp_mb(); */
+}
+
+int au_di_init(struct dentry *dentry)
+{
+	int err;
+	struct super_block *sb;
+	struct au_dinfo *dinfo;
+
+	err = 0;
+	sb = dentry->d_sb;
+	dinfo = au_di_alloc(sb, AuLsc_DI_CHILD);
+	if (dinfo) {
+		atomic_set(&dinfo->di_generation, au_sigen(sb));
+		/* smp_mb(); */ /* atomic_set */
+		dentry->d_fsdata = dinfo;
+	} else
+		err = -ENOMEM;
+
+	return err;
+}
+
+void au_di_fin(struct dentry *dentry)
+{
+	struct au_dinfo *dinfo;
+
+	dinfo = au_di(dentry);
+	AuRwDestroy(&dinfo->di_rwsem);
+	au_di_free(dinfo);
+}
+
+int au_di_realloc(struct au_dinfo *dinfo, int nbr, int may_shrink)
+{
+	int err, sz;
+	struct au_hdentry *hdp;
+
+	AuRwMustWriteLock(&dinfo->di_rwsem);
+
+	err = -ENOMEM;
+	sz = sizeof(*hdp) * (dinfo->di_bbot + 1);
+	if (!sz)
+		sz = sizeof(*hdp);
+	hdp = au_kzrealloc(dinfo->di_hdentry, sz, sizeof(*hdp) * nbr, GFP_NOFS,
+			   may_shrink);
+	if (hdp) {
+		dinfo->di_hdentry = hdp;
+		err = 0;
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void do_ii_write_lock(struct inode *inode, unsigned int lsc)
+{
+	switch (lsc) {
+	case AuLsc_DI_CHILD:
+		ii_write_lock_child(inode);
+		break;
+	case AuLsc_DI_CHILD2:
+		ii_write_lock_child2(inode);
+		break;
+	case AuLsc_DI_CHILD3:
+		ii_write_lock_child3(inode);
+		break;
+	case AuLsc_DI_PARENT:
+		ii_write_lock_parent(inode);
+		break;
+	case AuLsc_DI_PARENT2:
+		ii_write_lock_parent2(inode);
+		break;
+	case AuLsc_DI_PARENT3:
+		ii_write_lock_parent3(inode);
+		break;
+	default:
+		BUG();
+	}
+}
+
+static void do_ii_read_lock(struct inode *inode, unsigned int lsc)
+{
+	switch (lsc) {
+	case AuLsc_DI_CHILD:
+		ii_read_lock_child(inode);
+		break;
+	case AuLsc_DI_CHILD2:
+		ii_read_lock_child2(inode);
+		break;
+	case AuLsc_DI_CHILD3:
+		ii_read_lock_child3(inode);
+		break;
+	case AuLsc_DI_PARENT:
+		ii_read_lock_parent(inode);
+		break;
+	case AuLsc_DI_PARENT2:
+		ii_read_lock_parent2(inode);
+		break;
+	case AuLsc_DI_PARENT3:
+		ii_read_lock_parent3(inode);
+		break;
+	default:
+		BUG();
+	}
+}
+
+void di_read_lock(struct dentry *d, int flags, unsigned int lsc)
+{
+	struct inode *inode;
+
+	au_rw_read_lock_nested(&au_di(d)->di_rwsem, lsc);
+	if (d_really_is_positive(d)) {
+		inode = d_inode(d);
+		if (au_ftest_lock(flags, IW))
+			do_ii_write_lock(inode, lsc);
+		else if (au_ftest_lock(flags, IR))
+			do_ii_read_lock(inode, lsc);
+	}
+}
+
+void di_read_unlock(struct dentry *d, int flags)
+{
+	struct inode *inode;
+
+	if (d_really_is_positive(d)) {
+		inode = d_inode(d);
+		if (au_ftest_lock(flags, IW)) {
+			au_dbg_verify_dinode(d);
+			ii_write_unlock(inode);
+		} else if (au_ftest_lock(flags, IR)) {
+			au_dbg_verify_dinode(d);
+			ii_read_unlock(inode);
+		}
+	}
+	au_rw_read_unlock(&au_di(d)->di_rwsem);
+}
+
+void di_downgrade_lock(struct dentry *d, int flags)
+{
+	if (d_really_is_positive(d) && au_ftest_lock(flags, IR))
+		ii_downgrade_lock(d_inode(d));
+	au_rw_dgrade_lock(&au_di(d)->di_rwsem);
+}
+
+void di_write_lock(struct dentry *d, unsigned int lsc)
+{
+	au_rw_write_lock_nested(&au_di(d)->di_rwsem, lsc);
+	if (d_really_is_positive(d))
+		do_ii_write_lock(d_inode(d), lsc);
+}
+
+void di_write_unlock(struct dentry *d)
+{
+	au_dbg_verify_dinode(d);
+	if (d_really_is_positive(d))
+		ii_write_unlock(d_inode(d));
+	au_rw_write_unlock(&au_di(d)->di_rwsem);
+}
+
+void di_write_lock2_child(struct dentry *d1, struct dentry *d2, int isdir)
+{
+	AuDebugOn(d1 == d2
+		  || d_inode(d1) == d_inode(d2)
+		  || d1->d_sb != d2->d_sb);
+
+	if ((isdir && au_test_subdir(d1, d2))
+	    || d1 < d2) {
+		di_write_lock_child(d1);
+		di_write_lock_child2(d2);
+	} else {
+		di_write_lock_child(d2);
+		di_write_lock_child2(d1);
+	}
+}
+
+void di_write_lock2_parent(struct dentry *d1, struct dentry *d2, int isdir)
+{
+	AuDebugOn(d1 == d2
+		  || d_inode(d1) == d_inode(d2)
+		  || d1->d_sb != d2->d_sb);
+
+	if ((isdir && au_test_subdir(d1, d2))
+	    || d1 < d2) {
+		di_write_lock_parent(d1);
+		di_write_lock_parent2(d2);
+	} else {
+		di_write_lock_parent(d2);
+		di_write_lock_parent2(d1);
+	}
+}
+
+void di_write_unlock2(struct dentry *d1, struct dentry *d2)
+{
+	di_write_unlock(d1);
+	if (d_inode(d1) == d_inode(d2))
+		au_rw_write_unlock(&au_di(d2)->di_rwsem);
+	else
+		di_write_unlock(d2);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex)
+{
+	struct dentry *d;
+
+	DiMustAnyLock(dentry);
+
+	if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
+		return NULL;
+	AuDebugOn(bindex < 0);
+	d = au_hdentry(au_di(dentry), bindex)->hd_dentry;
+	AuDebugOn(d && au_dcount(d) <= 0);
+	return d;
+}
+
+/*
+ * extended version of au_h_dptr().
+ * returns a hashed and positive (or linkable) h_dentry in bindex, NULL, or
+ * error.
+ */
+struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex)
+{
+	struct dentry *h_dentry;
+	struct inode *inode, *h_inode;
+
+	AuDebugOn(d_really_is_negative(dentry));
+
+	h_dentry = NULL;
+	if (au_dbtop(dentry) <= bindex
+	    && bindex <= au_dbbot(dentry))
+		h_dentry = au_h_dptr(dentry, bindex);
+	if (h_dentry && !au_d_linkable(h_dentry)) {
+		dget(h_dentry);
+		goto out; /* success */
+	}
+
+	inode = d_inode(dentry);
+	AuDebugOn(bindex < au_ibtop(inode));
+	AuDebugOn(au_ibbot(inode) < bindex);
+	h_inode = au_h_iptr(inode, bindex);
+	h_dentry = d_find_alias(h_inode);
+	if (h_dentry) {
+		if (!IS_ERR(h_dentry)) {
+			if (!au_d_linkable(h_dentry))
+				goto out; /* success */
+			dput(h_dentry);
+		} else
+			goto out;
+	}
+
+	if (au_opt_test(au_mntflags(dentry->d_sb), PLINK)) {
+		h_dentry = au_plink_lkup(inode, bindex);
+		AuDebugOn(!h_dentry);
+		if (!IS_ERR(h_dentry)) {
+			if (!au_d_hashed_positive(h_dentry))
+				goto out; /* success */
+			dput(h_dentry);
+			h_dentry = NULL;
+		}
+	}
+
+out:
+	AuDbgDentry(h_dentry);
+	return h_dentry;
+}
+
+aufs_bindex_t au_dbtail(struct dentry *dentry)
+{
+	aufs_bindex_t bbot, bwh;
+
+	bbot = au_dbbot(dentry);
+	if (0 <= bbot) {
+		bwh = au_dbwh(dentry);
+		if (!bwh)
+			return bwh;
+		if (0 < bwh && bwh < bbot)
+			return bwh - 1;
+	}
+	return bbot;
+}
+
+aufs_bindex_t au_dbtaildir(struct dentry *dentry)
+{
+	aufs_bindex_t bbot, bopq;
+
+	bbot = au_dbtail(dentry);
+	if (0 <= bbot) {
+		bopq = au_dbdiropq(dentry);
+		if (0 <= bopq && bopq < bbot)
+			bbot = bopq;
+	}
+	return bbot;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex,
+		   struct dentry *h_dentry)
+{
+	struct au_dinfo *dinfo;
+	struct au_hdentry *hd;
+	struct au_branch *br;
+
+	DiMustWriteLock(dentry);
+
+	dinfo = au_di(dentry);
+	hd = au_hdentry(dinfo, bindex);
+	au_hdput(hd);
+	hd->hd_dentry = h_dentry;
+	if (h_dentry) {
+		br = au_sbr(dentry->d_sb, bindex);
+		hd->hd_id = br->br_id;
+	}
+}
+
+int au_dbrange_test(struct dentry *dentry)
+{
+	int err;
+	aufs_bindex_t btop, bbot;
+
+	err = 0;
+	btop = au_dbtop(dentry);
+	bbot = au_dbbot(dentry);
+	if (btop >= 0)
+		AuDebugOn(bbot < 0 && btop > bbot);
+	else {
+		err = -EIO;
+		AuDebugOn(bbot >= 0);
+	}
+
+	return err;
+}
+
+int au_digen_test(struct dentry *dentry, unsigned int sigen)
+{
+	int err;
+
+	err = 0;
+	if (unlikely(au_digen(dentry) != sigen
+		     || au_iigen_test(d_inode(dentry), sigen)))
+		err = -EIO;
+
+	return err;
+}
+
+void au_update_digen(struct dentry *dentry)
+{
+	atomic_set(&au_di(dentry)->di_generation, au_sigen(dentry->d_sb));
+	/* smp_mb(); */ /* atomic_set */
+}
+
+void au_update_dbrange(struct dentry *dentry, int do_put_zero)
+{
+	struct au_dinfo *dinfo;
+	struct dentry *h_d;
+	struct au_hdentry *hdp;
+	aufs_bindex_t bindex, bbot;
+
+	DiMustWriteLock(dentry);
+
+	dinfo = au_di(dentry);
+	if (!dinfo || dinfo->di_btop < 0)
+		return;
+
+	if (do_put_zero) {
+		bbot = dinfo->di_bbot;
+		bindex = dinfo->di_btop;
+		hdp = au_hdentry(dinfo, bindex);
+		for (; bindex <= bbot; bindex++, hdp++) {
+			h_d = hdp->hd_dentry;
+			if (h_d && d_is_negative(h_d))
+				au_set_h_dptr(dentry, bindex, NULL);
+		}
+	}
+
+	dinfo->di_btop = 0;
+	hdp = au_hdentry(dinfo, dinfo->di_btop);
+	for (; dinfo->di_btop <= dinfo->di_bbot; dinfo->di_btop++, hdp++)
+		if (hdp->hd_dentry)
+			break;
+	if (dinfo->di_btop > dinfo->di_bbot) {
+		dinfo->di_btop = -1;
+		dinfo->di_bbot = -1;
+		return;
+	}
+
+	hdp = au_hdentry(dinfo, dinfo->di_bbot);
+	for (; dinfo->di_bbot >= 0; dinfo->di_bbot--, hdp--)
+		if (hdp->hd_dentry)
+			break;
+	AuDebugOn(dinfo->di_btop > dinfo->di_bbot || dinfo->di_bbot < 0);
+}
+
+void au_update_dbtop(struct dentry *dentry)
+{
+	aufs_bindex_t bindex, bbot;
+	struct dentry *h_dentry;
+
+	bbot = au_dbbot(dentry);
+	for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (!h_dentry)
+			continue;
+		if (d_is_positive(h_dentry)) {
+			au_set_dbtop(dentry, bindex);
+			return;
+		}
+		au_set_h_dptr(dentry, bindex, NULL);
+	}
+}
+
+void au_update_dbbot(struct dentry *dentry)
+{
+	aufs_bindex_t bindex, btop;
+	struct dentry *h_dentry;
+
+	btop = au_dbtop(dentry);
+	for (bindex = au_dbbot(dentry); bindex >= btop; bindex--) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (!h_dentry)
+			continue;
+		if (d_is_positive(h_dentry)) {
+			au_set_dbbot(dentry, bindex);
+			return;
+		}
+		au_set_h_dptr(dentry, bindex, NULL);
+	}
+}
+
+int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry)
+{
+	aufs_bindex_t bindex, bbot;
+
+	bbot = au_dbbot(dentry);
+	for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++)
+		if (au_h_dptr(dentry, bindex) == h_dentry)
+			return bindex;
+	return -1;
+}
diff -Naur --no-dereference a/fs/aufs/dir.c b/fs/aufs/dir.c
--- a/fs/aufs/dir.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dir.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,765 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * directory operations
+ */
+
+#include <linux/fs_stack.h>
+#include <linux/iversion.h>
+#include "aufs.h"
+
+void au_add_nlink(struct inode *dir, struct inode *h_dir)
+{
+	unsigned int nlink;
+
+	AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode));
+
+	nlink = dir->i_nlink;
+	nlink += h_dir->i_nlink - 2;
+	if (h_dir->i_nlink < 2)
+		nlink += 2;
+	smp_mb(); /* for i_nlink */
+	/* 0 can happen in revaliding */
+	set_nlink(dir, nlink);
+}
+
+void au_sub_nlink(struct inode *dir, struct inode *h_dir)
+{
+	unsigned int nlink;
+
+	AuDebugOn(!S_ISDIR(dir->i_mode) || !S_ISDIR(h_dir->i_mode));
+
+	nlink = dir->i_nlink;
+	nlink -= h_dir->i_nlink - 2;
+	if (h_dir->i_nlink < 2)
+		nlink -= 2;
+	smp_mb(); /* for i_nlink */
+	/* nlink == 0 means the branch-fs is broken */
+	set_nlink(dir, nlink);
+}
+
+loff_t au_dir_size(struct file *file, struct dentry *dentry)
+{
+	loff_t sz;
+	aufs_bindex_t bindex, bbot;
+	struct file *h_file;
+	struct dentry *h_dentry;
+
+	sz = 0;
+	if (file) {
+		AuDebugOn(!d_is_dir(file->f_path.dentry));
+
+		bbot = au_fbbot_dir(file);
+		for (bindex = au_fbtop(file);
+		     bindex <= bbot && sz < KMALLOC_MAX_SIZE;
+		     bindex++) {
+			h_file = au_hf_dir(file, bindex);
+			if (h_file && file_inode(h_file))
+				sz += vfsub_f_size_read(h_file);
+		}
+	} else {
+		AuDebugOn(!dentry);
+		AuDebugOn(!d_is_dir(dentry));
+
+		bbot = au_dbtaildir(dentry);
+		for (bindex = au_dbtop(dentry);
+		     bindex <= bbot && sz < KMALLOC_MAX_SIZE;
+		     bindex++) {
+			h_dentry = au_h_dptr(dentry, bindex);
+			if (h_dentry && d_is_positive(h_dentry))
+				sz += i_size_read(d_inode(h_dentry));
+		}
+	}
+	if (sz < KMALLOC_MAX_SIZE)
+		sz = roundup_pow_of_two(sz);
+	if (sz > KMALLOC_MAX_SIZE)
+		sz = KMALLOC_MAX_SIZE;
+	else if (sz < NAME_MAX) {
+		BUILD_BUG_ON(AUFS_RDBLK_DEF < NAME_MAX);
+		sz = AUFS_RDBLK_DEF;
+	}
+	return sz;
+}
+
+struct au_dir_ts_arg {
+	struct dentry *dentry;
+	aufs_bindex_t brid;
+};
+
+static void au_do_dir_ts(void *arg)
+{
+	struct au_dir_ts_arg *a = arg;
+	struct au_dtime dt;
+	struct path h_path;
+	struct inode *dir, *h_dir;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct au_hinode *hdir;
+	int err;
+	aufs_bindex_t btop, bindex;
+
+	sb = a->dentry->d_sb;
+	if (d_really_is_negative(a->dentry))
+		goto out;
+	/* no dir->i_mutex lock */
+	aufs_read_lock(a->dentry, AuLock_DW); /* noflush */
+
+	dir = d_inode(a->dentry);
+	btop = au_ibtop(dir);
+	bindex = au_br_index(sb, a->brid);
+	if (bindex < btop)
+		goto out_unlock;
+
+	br = au_sbr(sb, bindex);
+	h_path.dentry = au_h_dptr(a->dentry, bindex);
+	if (!h_path.dentry)
+		goto out_unlock;
+	h_path.mnt = au_br_mnt(br);
+	au_dtime_store(&dt, a->dentry, &h_path);
+
+	br = au_sbr(sb, btop);
+	if (!au_br_writable(br->br_perm))
+		goto out_unlock;
+	h_path.dentry = au_h_dptr(a->dentry, btop);
+	h_path.mnt = au_br_mnt(br);
+	err = vfsub_mnt_want_write(h_path.mnt);
+	if (err)
+		goto out_unlock;
+	hdir = au_hi(dir, btop);
+	au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+	h_dir = au_h_iptr(dir, btop);
+	if (h_dir->i_nlink
+	    && timespec64_compare(&h_dir->i_mtime, &dt.dt_mtime) < 0) {
+		dt.dt_h_path = h_path;
+		au_dtime_revert(&dt);
+	}
+	au_hn_inode_unlock(hdir);
+	vfsub_mnt_drop_write(h_path.mnt);
+	au_cpup_attr_timesizes(dir);
+
+out_unlock:
+	aufs_read_unlock(a->dentry, AuLock_DW);
+out:
+	dput(a->dentry);
+	au_nwt_done(&au_sbi(sb)->si_nowait);
+	au_kfree_try_rcu(arg);
+}
+
+void au_dir_ts(struct inode *dir, aufs_bindex_t bindex)
+{
+	int perm, wkq_err;
+	aufs_bindex_t btop;
+	struct au_dir_ts_arg *arg;
+	struct dentry *dentry;
+	struct super_block *sb;
+
+	IMustLock(dir);
+
+	dentry = d_find_any_alias(dir);
+	AuDebugOn(!dentry);
+	sb = dentry->d_sb;
+	btop = au_ibtop(dir);
+	if (btop == bindex) {
+		au_cpup_attr_timesizes(dir);
+		goto out;
+	}
+
+	perm = au_sbr_perm(sb, btop);
+	if (!au_br_writable(perm))
+		goto out;
+
+	arg = kmalloc(sizeof(*arg), GFP_NOFS);
+	if (!arg)
+		goto out;
+
+	arg->dentry = dget(dentry); /* will be dput-ted by au_do_dir_ts() */
+	arg->brid = au_sbr_id(sb, bindex);
+	wkq_err = au_wkq_nowait(au_do_dir_ts, arg, sb, /*flags*/0);
+	if (unlikely(wkq_err)) {
+		pr_err("wkq %d\n", wkq_err);
+		dput(dentry);
+		au_kfree_try_rcu(arg);
+	}
+
+out:
+	dput(dentry);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int reopen_dir(struct file *file)
+{
+	int err;
+	unsigned int flags;
+	aufs_bindex_t bindex, btail, btop;
+	struct dentry *dentry, *h_dentry;
+	struct file *h_file;
+
+	/* open all lower dirs */
+	dentry = file->f_path.dentry;
+	btop = au_dbtop(dentry);
+	for (bindex = au_fbtop(file); bindex < btop; bindex++)
+		au_set_h_fptr(file, bindex, NULL);
+	au_set_fbtop(file, btop);
+
+	btail = au_dbtaildir(dentry);
+	for (bindex = au_fbbot_dir(file); btail < bindex; bindex--)
+		au_set_h_fptr(file, bindex, NULL);
+	au_set_fbbot_dir(file, btail);
+
+	flags = vfsub_file_flags(file);
+	for (bindex = btop; bindex <= btail; bindex++) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (!h_dentry)
+			continue;
+		h_file = au_hf_dir(file, bindex);
+		if (h_file)
+			continue;
+
+		h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
+		err = PTR_ERR(h_file);
+		if (IS_ERR(h_file))
+			goto out; /* close all? */
+		au_set_h_fptr(file, bindex, h_file);
+	}
+	au_update_figen(file);
+	/* todo: necessary? */
+	/* file->f_ra = h_file->f_ra; */
+	err = 0;
+
+out:
+	return err;
+}
+
+static int do_open_dir(struct file *file, int flags, struct file *h_file)
+{
+	int err;
+	aufs_bindex_t bindex, btail;
+	struct dentry *dentry, *h_dentry;
+	struct vfsmount *mnt;
+
+	FiMustWriteLock(file);
+	AuDebugOn(h_file);
+
+	err = 0;
+	mnt = file->f_path.mnt;
+	dentry = file->f_path.dentry;
+	file->f_version = inode_query_iversion(d_inode(dentry));
+	bindex = au_dbtop(dentry);
+	au_set_fbtop(file, bindex);
+	btail = au_dbtaildir(dentry);
+	au_set_fbbot_dir(file, btail);
+	for (; !err && bindex <= btail; bindex++) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (!h_dentry)
+			continue;
+
+		err = vfsub_test_mntns(mnt, h_dentry->d_sb);
+		if (unlikely(err))
+			break;
+		h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
+		if (IS_ERR(h_file)) {
+			err = PTR_ERR(h_file);
+			break;
+		}
+		au_set_h_fptr(file, bindex, h_file);
+	}
+	au_update_figen(file);
+	/* todo: necessary? */
+	/* file->f_ra = h_file->f_ra; */
+	if (!err)
+		return 0; /* success */
+
+	/* close all */
+	for (bindex = au_fbtop(file); bindex <= btail; bindex++)
+		au_set_h_fptr(file, bindex, NULL);
+	au_set_fbtop(file, -1);
+	au_set_fbbot_dir(file, -1);
+
+	return err;
+}
+
+static int aufs_open_dir(struct inode *inode __maybe_unused,
+			 struct file *file)
+{
+	int err;
+	struct super_block *sb;
+	struct au_fidir *fidir;
+
+	err = -ENOMEM;
+	sb = file->f_path.dentry->d_sb;
+	si_read_lock(sb, AuLock_FLUSH);
+	fidir = au_fidir_alloc(sb);
+	if (fidir) {
+		struct au_do_open_args args = {
+			.open	= do_open_dir,
+			.fidir	= fidir
+		};
+		err = au_do_open(file, &args);
+		if (unlikely(err))
+			au_kfree_rcu(fidir);
+	}
+	si_read_unlock(sb);
+	return err;
+}
+
+static int aufs_release_dir(struct inode *inode __maybe_unused,
+			    struct file *file)
+{
+	struct au_vdir *vdir_cache;
+	struct au_finfo *finfo;
+	struct au_fidir *fidir;
+	struct au_hfile *hf;
+	aufs_bindex_t bindex, bbot;
+
+	finfo = au_fi(file);
+	fidir = finfo->fi_hdir;
+	if (fidir) {
+		au_hbl_del(&finfo->fi_hlist,
+			   &au_sbi(file->f_path.dentry->d_sb)->si_files);
+		vdir_cache = fidir->fd_vdir_cache; /* lock-free */
+		if (vdir_cache)
+			au_vdir_free(vdir_cache);
+
+		bindex = finfo->fi_btop;
+		if (bindex >= 0) {
+			hf = fidir->fd_hfile + bindex;
+			/*
+			 * calls fput() instead of filp_close(),
+			 * since no dnotify or lock for the lower file.
+			 */
+			bbot = fidir->fd_bbot;
+			for (; bindex <= bbot; bindex++, hf++)
+				if (hf->hf_file)
+					au_hfput(hf, /*execed*/0);
+		}
+		au_kfree_rcu(fidir);
+		finfo->fi_hdir = NULL;
+	}
+	au_finfo_fin(file);
+	return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_flush_dir(struct file *file, fl_owner_t id)
+{
+	int err;
+	aufs_bindex_t bindex, bbot;
+	struct file *h_file;
+
+	err = 0;
+	bbot = au_fbbot_dir(file);
+	for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) {
+		h_file = au_hf_dir(file, bindex);
+		if (h_file)
+			err = vfsub_flush(h_file, id);
+	}
+	return err;
+}
+
+static int aufs_flush_dir(struct file *file, fl_owner_t id)
+{
+	return au_do_flush(file, id, au_do_flush_dir);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_fsync_dir_no_file(struct dentry *dentry, int datasync)
+{
+	int err;
+	aufs_bindex_t bbot, bindex;
+	struct inode *inode;
+	struct super_block *sb;
+
+	err = 0;
+	sb = dentry->d_sb;
+	inode = d_inode(dentry);
+	IMustLock(inode);
+	bbot = au_dbbot(dentry);
+	for (bindex = au_dbtop(dentry); !err && bindex <= bbot; bindex++) {
+		struct path h_path;
+
+		if (au_test_ro(sb, bindex, inode))
+			continue;
+		h_path.dentry = au_h_dptr(dentry, bindex);
+		if (!h_path.dentry)
+			continue;
+
+		h_path.mnt = au_sbr_mnt(sb, bindex);
+		err = vfsub_fsync(NULL, &h_path, datasync);
+	}
+
+	return err;
+}
+
+static int au_do_fsync_dir(struct file *file, int datasync)
+{
+	int err;
+	aufs_bindex_t bbot, bindex;
+	struct file *h_file;
+	struct super_block *sb;
+	struct inode *inode;
+
+	err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0);
+	if (unlikely(err))
+		goto out;
+
+	inode = file_inode(file);
+	sb = inode->i_sb;
+	bbot = au_fbbot_dir(file);
+	for (bindex = au_fbtop(file); !err && bindex <= bbot; bindex++) {
+		h_file = au_hf_dir(file, bindex);
+		if (!h_file || au_test_ro(sb, bindex, inode))
+			continue;
+
+		err = vfsub_fsync(h_file, &h_file->f_path, datasync);
+	}
+
+out:
+	return err;
+}
+
+/*
+ * @file may be NULL
+ */
+static int aufs_fsync_dir(struct file *file, loff_t start, loff_t end,
+			  int datasync)
+{
+	int err;
+	struct dentry *dentry;
+	struct inode *inode;
+	struct super_block *sb;
+
+	err = 0;
+	dentry = file->f_path.dentry;
+	inode = d_inode(dentry);
+	inode_lock(inode);
+	sb = dentry->d_sb;
+	si_noflush_read_lock(sb);
+	if (file)
+		err = au_do_fsync_dir(file, datasync);
+	else {
+		di_write_lock_child(dentry);
+		err = au_do_fsync_dir_no_file(dentry, datasync);
+	}
+	au_cpup_attr_timesizes(inode);
+	di_write_unlock(dentry);
+	if (file)
+		fi_write_unlock(file);
+
+	si_read_unlock(sb);
+	inode_unlock(inode);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_iterate_shared(struct file *file, struct dir_context *ctx)
+{
+	int err;
+	struct dentry *dentry;
+	struct inode *inode, *h_inode;
+	struct super_block *sb;
+
+	AuDbg("%pD, ctx{%ps, %llu}\n", file, ctx->actor, ctx->pos);
+
+	dentry = file->f_path.dentry;
+	inode = d_inode(dentry);
+	IMustLock(inode);
+
+	sb = dentry->d_sb;
+	si_read_lock(sb, AuLock_FLUSH);
+	err = au_reval_and_lock_fdi(file, reopen_dir, /*wlock*/1, /*fi_lsc*/0);
+	if (unlikely(err))
+		goto out;
+	err = au_alive_dir(dentry);
+	if (!err)
+		err = au_vdir_init(file);
+	di_downgrade_lock(dentry, AuLock_IR);
+	if (unlikely(err))
+		goto out_unlock;
+
+	h_inode = au_h_iptr(inode, au_ibtop(inode));
+	if (!au_test_nfsd()) {
+		err = au_vdir_fill_de(file, ctx);
+		fsstack_copy_attr_atime(inode, h_inode);
+	} else {
+		/*
+		 * nfsd filldir may call lookup_one_len(), vfs_getattr(),
+		 * encode_fh() and others.
+		 */
+		atomic_inc(&h_inode->i_count);
+		di_read_unlock(dentry, AuLock_IR);
+		si_read_unlock(sb);
+		err = au_vdir_fill_de(file, ctx);
+		fsstack_copy_attr_atime(inode, h_inode);
+		fi_write_unlock(file);
+		iput(h_inode);
+
+		AuTraceErr(err);
+		return err;
+	}
+
+out_unlock:
+	di_read_unlock(dentry, AuLock_IR);
+	fi_write_unlock(file);
+out:
+	si_read_unlock(sb);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define AuTestEmpty_WHONLY	1
+#define AuTestEmpty_CALLED	(1 << 1)
+#define AuTestEmpty_SHWH	(1 << 2)
+#define au_ftest_testempty(flags, name)	((flags) & AuTestEmpty_##name)
+#define au_fset_testempty(flags, name) \
+	do { (flags) |= AuTestEmpty_##name; } while (0)
+#define au_fclr_testempty(flags, name) \
+	do { (flags) &= ~AuTestEmpty_##name; } while (0)
+
+#ifndef CONFIG_AUFS_SHWH
+#undef AuTestEmpty_SHWH
+#define AuTestEmpty_SHWH	0
+#endif
+
+struct test_empty_arg {
+	struct dir_context ctx;
+	struct au_nhash *whlist;
+	unsigned int flags;
+	int err;
+	aufs_bindex_t bindex;
+};
+
+static int test_empty_cb(struct dir_context *ctx, const char *__name,
+			 int namelen, loff_t offset __maybe_unused, u64 ino,
+			 unsigned int d_type)
+{
+	struct test_empty_arg *arg = container_of(ctx, struct test_empty_arg,
+						  ctx);
+	char *name = (void *)__name;
+
+	arg->err = 0;
+	au_fset_testempty(arg->flags, CALLED);
+	/* smp_mb(); */
+	if (name[0] == '.'
+	    && (namelen == 1 || (name[1] == '.' && namelen == 2)))
+		goto out; /* success */
+
+	if (namelen <= AUFS_WH_PFX_LEN
+	    || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
+		if (au_ftest_testempty(arg->flags, WHONLY)
+		    && !au_nhash_test_known_wh(arg->whlist, name, namelen))
+			arg->err = -ENOTEMPTY;
+		goto out;
+	}
+
+	name += AUFS_WH_PFX_LEN;
+	namelen -= AUFS_WH_PFX_LEN;
+	if (!au_nhash_test_known_wh(arg->whlist, name, namelen))
+		arg->err = au_nhash_append_wh
+			(arg->whlist, name, namelen, ino, d_type, arg->bindex,
+			 au_ftest_testempty(arg->flags, SHWH));
+
+out:
+	/* smp_mb(); */
+	AuTraceErr(arg->err);
+	return arg->err;
+}
+
+static int do_test_empty(struct dentry *dentry, struct test_empty_arg *arg)
+{
+	int err;
+	struct file *h_file;
+	struct au_branch *br;
+
+	h_file = au_h_open(dentry, arg->bindex,
+			   O_RDONLY | O_NONBLOCK | O_DIRECTORY | O_LARGEFILE,
+			   /*file*/NULL, /*force_wr*/0);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	err = 0;
+	if (!au_opt_test(au_mntflags(dentry->d_sb), UDBA_NONE)
+	    && !file_inode(h_file)->i_nlink)
+		goto out_put;
+
+	do {
+		arg->err = 0;
+		au_fclr_testempty(arg->flags, CALLED);
+		/* smp_mb(); */
+		err = vfsub_iterate_dir(h_file, &arg->ctx);
+		if (err >= 0)
+			err = arg->err;
+	} while (!err && au_ftest_testempty(arg->flags, CALLED));
+
+out_put:
+	fput(h_file);
+	br = au_sbr(dentry->d_sb, arg->bindex);
+	au_lcnt_dec(&br->br_nfiles);
+out:
+	return err;
+}
+
+struct do_test_empty_args {
+	int *errp;
+	struct dentry *dentry;
+	struct test_empty_arg *arg;
+};
+
+static void call_do_test_empty(void *args)
+{
+	struct do_test_empty_args *a = args;
+	*a->errp = do_test_empty(a->dentry, a->arg);
+}
+
+static int sio_test_empty(struct dentry *dentry, struct test_empty_arg *arg)
+{
+	int err, wkq_err;
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+	struct user_namespace *h_userns;
+
+	h_userns = au_sbr_userns(dentry->d_sb, arg->bindex);
+	h_dentry = au_h_dptr(dentry, arg->bindex);
+	h_inode = d_inode(h_dentry);
+	/* todo: i_mode changes anytime? */
+	inode_lock_shared_nested(h_inode, AuLsc_I_CHILD);
+	err = au_test_h_perm_sio(h_userns, h_inode, MAY_EXEC | MAY_READ);
+	inode_unlock_shared(h_inode);
+	if (!err)
+		err = do_test_empty(dentry, arg);
+	else {
+		struct do_test_empty_args args = {
+			.errp	= &err,
+			.dentry	= dentry,
+			.arg	= arg
+		};
+		unsigned int flags = arg->flags;
+
+		wkq_err = au_wkq_wait(call_do_test_empty, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+		arg->flags = flags;
+	}
+
+	return err;
+}
+
+int au_test_empty_lower(struct dentry *dentry)
+{
+	int err;
+	unsigned int rdhash;
+	aufs_bindex_t bindex, btop, btail;
+	struct au_nhash whlist;
+	struct test_empty_arg arg = {
+		.ctx = {
+			.actor = test_empty_cb
+		}
+	};
+	int (*test_empty)(struct dentry *dentry, struct test_empty_arg *arg);
+
+	SiMustAnyLock(dentry->d_sb);
+
+	rdhash = au_sbi(dentry->d_sb)->si_rdhash;
+	if (!rdhash)
+		rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, dentry));
+	err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS);
+	if (unlikely(err))
+		goto out;
+
+	arg.flags = 0;
+	arg.whlist = &whlist;
+	btop = au_dbtop(dentry);
+	if (au_opt_test(au_mntflags(dentry->d_sb), SHWH))
+		au_fset_testempty(arg.flags, SHWH);
+	test_empty = do_test_empty;
+	if (au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1))
+		test_empty = sio_test_empty;
+	arg.bindex = btop;
+	err = test_empty(dentry, &arg);
+	if (unlikely(err))
+		goto out_whlist;
+
+	au_fset_testempty(arg.flags, WHONLY);
+	btail = au_dbtaildir(dentry);
+	for (bindex = btop + 1; !err && bindex <= btail; bindex++) {
+		struct dentry *h_dentry;
+
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (h_dentry && d_is_positive(h_dentry)) {
+			arg.bindex = bindex;
+			err = test_empty(dentry, &arg);
+		}
+	}
+
+out_whlist:
+	au_nhash_wh_free(&whlist);
+out:
+	return err;
+}
+
+int au_test_empty(struct dentry *dentry, struct au_nhash *whlist)
+{
+	int err;
+	struct test_empty_arg arg = {
+		.ctx = {
+			.actor = test_empty_cb
+		}
+	};
+	aufs_bindex_t bindex, btail;
+
+	err = 0;
+	arg.whlist = whlist;
+	arg.flags = AuTestEmpty_WHONLY;
+	if (au_opt_test(au_mntflags(dentry->d_sb), SHWH))
+		au_fset_testempty(arg.flags, SHWH);
+	btail = au_dbtaildir(dentry);
+	for (bindex = au_dbtop(dentry); !err && bindex <= btail; bindex++) {
+		struct dentry *h_dentry;
+
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (h_dentry && d_is_positive(h_dentry)) {
+			arg.bindex = bindex;
+			err = sio_test_empty(dentry, &arg);
+		}
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+const struct file_operations aufs_dir_fop = {
+	.owner		= THIS_MODULE,
+	.llseek		= default_llseek,
+	.read		= generic_read_dir,
+	.iterate_shared	= aufs_iterate_shared,
+	.unlocked_ioctl	= aufs_ioctl_dir,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= aufs_compat_ioctl_dir,
+#endif
+	.open		= aufs_open_dir,
+	.release	= aufs_release_dir,
+	.flush		= aufs_flush_dir,
+	.fsync		= aufs_fsync_dir
+};
diff -Naur --no-dereference a/fs/aufs/dir.h b/fs/aufs/dir.h
--- a/fs/aufs/dir.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dir.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * directory operations
+ */
+
+#ifndef __AUFS_DIR_H__
+#define __AUFS_DIR_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+
+/* ---------------------------------------------------------------------- */
+
+/* need to be faster and smaller */
+
+struct au_nhash {
+	unsigned int		nh_num;
+	struct hlist_head	*nh_head;
+};
+
+struct au_vdir_destr {
+	unsigned char	len;
+	unsigned char	name[];
+} __packed;
+
+struct au_vdir_dehstr {
+	struct hlist_node	hash;
+	struct au_vdir_destr	*str;
+	struct rcu_head		rcu;
+} ____cacheline_aligned_in_smp;
+
+struct au_vdir_de {
+	ino_t			de_ino;
+	unsigned char		de_type;
+	/* caution: packed */
+	struct au_vdir_destr	de_str;
+} __packed;
+
+struct au_vdir_wh {
+	struct hlist_node	wh_hash;
+#ifdef CONFIG_AUFS_SHWH
+	ino_t			wh_ino;
+	aufs_bindex_t		wh_bindex;
+	unsigned char		wh_type;
+#else
+	aufs_bindex_t		wh_bindex;
+#endif
+	/* caution: packed */
+	struct au_vdir_destr	wh_str;
+} __packed;
+
+union au_vdir_deblk_p {
+	unsigned char		*deblk;
+	struct au_vdir_de	*de;
+};
+
+struct au_vdir {
+	unsigned char	**vd_deblk;
+	unsigned long	vd_nblk;
+	struct {
+		unsigned long		ul;
+		union au_vdir_deblk_p	p;
+	} vd_last;
+
+	u64		vd_version;
+	unsigned int	vd_deblk_sz;
+	unsigned long	vd_jiffy;
+	struct rcu_head	rcu;
+} ____cacheline_aligned_in_smp;
+
+/* ---------------------------------------------------------------------- */
+
+/* dir.c */
+extern const struct file_operations aufs_dir_fop;
+void au_add_nlink(struct inode *dir, struct inode *h_dir);
+void au_sub_nlink(struct inode *dir, struct inode *h_dir);
+loff_t au_dir_size(struct file *file, struct dentry *dentry);
+void au_dir_ts(struct inode *dir, aufs_bindex_t bsrc);
+int au_test_empty_lower(struct dentry *dentry);
+int au_test_empty(struct dentry *dentry, struct au_nhash *whlist);
+
+/* vdir.c */
+unsigned int au_rdhash_est(loff_t sz);
+int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp);
+void au_nhash_wh_free(struct au_nhash *whlist);
+int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt,
+			    int limit);
+int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen);
+int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino,
+		       unsigned int d_type, aufs_bindex_t bindex,
+		       unsigned char shwh);
+void au_vdir_free(struct au_vdir *vdir);
+int au_vdir_init(struct file *file);
+int au_vdir_fill_de(struct file *file, struct dir_context *ctx);
+
+/* ioctl.c */
+long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg);
+
+#ifdef CONFIG_AUFS_RDU
+/* rdu.c */
+long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long au_rdu_compat_ioctl(struct file *file, unsigned int cmd,
+			 unsigned long arg);
+#endif
+#else
+AuStub(long, au_rdu_ioctl, return -EINVAL, struct file *file,
+       unsigned int cmd, unsigned long arg)
+#ifdef CONFIG_COMPAT
+AuStub(long, au_rdu_compat_ioctl, return -EINVAL, struct file *file,
+       unsigned int cmd, unsigned long arg)
+#endif
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DIR_H__ */
diff -Naur --no-dereference a/fs/aufs/dirren.c b/fs/aufs/dirren.c
--- a/fs/aufs/dirren.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dirren.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1315 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2017-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * special handling in renaming a directory
+ * in order to support looking-up the before-renamed name on the lower readonly
+ * branches
+ */
+
+#include <linux/byteorder/generic.h>
+#include "aufs.h"
+
+static void au_dr_hino_del(struct au_dr_br *dr, struct au_dr_hino *ent)
+{
+	int idx;
+
+	idx = au_dr_ihash(ent->dr_h_ino);
+	au_hbl_del(&ent->dr_hnode, dr->dr_h_ino + idx);
+}
+
+static int au_dr_hino_test_empty(struct au_dr_br *dr)
+{
+	int ret, i;
+	struct hlist_bl_head *hbl;
+
+	ret = 1;
+	for (i = 0; ret && i < AuDirren_NHASH; i++) {
+		hbl = dr->dr_h_ino + i;
+		hlist_bl_lock(hbl);
+		ret &= hlist_bl_empty(hbl);
+		hlist_bl_unlock(hbl);
+	}
+
+	return ret;
+}
+
+static struct au_dr_hino *au_dr_hino_find(struct au_dr_br *dr, ino_t ino)
+{
+	struct au_dr_hino *found, *ent;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos;
+	int idx;
+
+	found = NULL;
+	idx = au_dr_ihash(ino);
+	hbl = dr->dr_h_ino + idx;
+	hlist_bl_lock(hbl);
+	hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode)
+		if (ent->dr_h_ino == ino) {
+			found = ent;
+			break;
+		}
+	hlist_bl_unlock(hbl);
+
+	return found;
+}
+
+int au_dr_hino_test_add(struct au_dr_br *dr, ino_t ino,
+			struct au_dr_hino *add_ent)
+{
+	int found, idx;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos;
+	struct au_dr_hino *ent;
+
+	found = 0;
+	idx = au_dr_ihash(ino);
+	hbl = dr->dr_h_ino + idx;
+#if 0 /* debug print */
+	{
+		struct hlist_bl_node *tmp;
+
+		hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode)
+			AuDbg("hi%llu\n", (unsigned long long)ent->dr_h_ino);
+	}
+#endif
+	hlist_bl_lock(hbl);
+	hlist_bl_for_each_entry(ent, pos, hbl, dr_hnode)
+		if (ent->dr_h_ino == ino) {
+			found = 1;
+			break;
+		}
+	if (!found && add_ent)
+		hlist_bl_add_head(&add_ent->dr_hnode, hbl);
+	hlist_bl_unlock(hbl);
+
+	if (!found && add_ent)
+		AuDbg("i%llu added\n", (unsigned long long)add_ent->dr_h_ino);
+
+	return found;
+}
+
+void au_dr_hino_free(struct au_dr_br *dr)
+{
+	int i;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos, *tmp;
+	struct au_dr_hino *ent;
+
+	/* SiMustWriteLock(sb); */
+
+	for (i = 0; i < AuDirren_NHASH; i++) {
+		hbl = dr->dr_h_ino + i;
+		/* no spinlock since sbinfo must be write-locked */
+		hlist_bl_for_each_entry_safe(ent, pos, tmp, hbl, dr_hnode)
+			au_kfree_rcu(ent);
+		INIT_HLIST_BL_HEAD(hbl);
+	}
+}
+
+/* returns the number of inodes or an error */
+static int au_dr_hino_store(struct super_block *sb, struct au_branch *br,
+			    struct file *hinofile)
+{
+	int err, i;
+	ssize_t ssz;
+	loff_t pos, oldsize;
+	__be64 u64;
+	struct inode *hinoinode;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *n1, *n2;
+	struct au_dr_hino *ent;
+
+	SiMustWriteLock(sb);
+	AuDebugOn(!au_br_writable(br->br_perm));
+
+	hinoinode = file_inode(hinofile);
+	oldsize = i_size_read(hinoinode);
+
+	err = 0;
+	pos = 0;
+	hbl = br->br_dirren.dr_h_ino;
+	for (i = 0; !err && i < AuDirren_NHASH; i++, hbl++) {
+		/* no bit-lock since sbinfo must be write-locked */
+		hlist_bl_for_each_entry_safe(ent, n1, n2, hbl, dr_hnode) {
+			AuDbg("hi%llu, %pD2\n",
+			      (unsigned long long)ent->dr_h_ino, hinofile);
+			u64 = cpu_to_be64(ent->dr_h_ino);
+			ssz = vfsub_write_k(hinofile, &u64, sizeof(u64), &pos);
+			if (ssz == sizeof(u64))
+				continue;
+
+			/* write error */
+			pr_err("ssz %zd, %pD2\n", ssz, hinofile);
+			err = -ENOSPC;
+			if (ssz < 0)
+				err = ssz;
+			break;
+		}
+	}
+	/* regardless the error */
+	if (pos < oldsize) {
+		err = vfsub_trunc(&hinofile->f_path, pos, /*attr*/0, hinofile);
+		AuTraceErr(err);
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_dr_hino_load(struct au_dr_br *dr, struct file *hinofile)
+{
+	int err, hidx;
+	ssize_t ssz;
+	size_t sz, n;
+	loff_t pos;
+	uint64_t u64;
+	struct au_dr_hino *ent;
+	struct inode *hinoinode;
+	struct hlist_bl_head *hbl;
+
+	err = 0;
+	pos = 0;
+	hbl = dr->dr_h_ino;
+	hinoinode = file_inode(hinofile);
+	sz = i_size_read(hinoinode);
+	AuDebugOn(sz % sizeof(u64));
+	n = sz / sizeof(u64);
+	while (n--) {
+		ssz = vfsub_read_k(hinofile, &u64, sizeof(u64), &pos);
+		if (unlikely(ssz != sizeof(u64))) {
+			pr_err("ssz %zd, %pD2\n", ssz, hinofile);
+			err = -EINVAL;
+			if (ssz < 0)
+				err = ssz;
+			goto out_free;
+		}
+
+		ent = kmalloc(sizeof(*ent), GFP_NOFS);
+		if (!ent) {
+			err = -ENOMEM;
+			AuTraceErr(err);
+			goto out_free;
+		}
+		ent->dr_h_ino = be64_to_cpu((__force __be64)u64);
+		AuDbg("hi%llu, %pD2\n",
+		      (unsigned long long)ent->dr_h_ino, hinofile);
+		hidx = au_dr_ihash(ent->dr_h_ino);
+		au_hbl_add(&ent->dr_hnode, hbl + hidx);
+	}
+	goto out; /* success */
+
+out_free:
+	au_dr_hino_free(dr);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/*
+ * @bindex/@br is a switch to distinguish whether suspending hnotify or not.
+ * @path is a switch to distinguish load and store.
+ */
+static int au_dr_hino(struct super_block *sb, aufs_bindex_t bindex,
+		      struct au_branch *br, const struct path *path)
+{
+	int err, flags;
+	unsigned char load, suspend;
+	struct file *hinofile;
+	struct au_hinode *hdir;
+	struct inode *dir, *delegated;
+	struct path hinopath;
+	struct qstr hinoname = QSTR_INIT(AUFS_WH_DR_BRHINO,
+					 sizeof(AUFS_WH_DR_BRHINO) - 1);
+
+	AuDebugOn(bindex < 0 && !br);
+	AuDebugOn(bindex >= 0 && br);
+
+	err = -EINVAL;
+	suspend = !br;
+	if (suspend)
+		br = au_sbr(sb, bindex);
+	load = !!path;
+	if (!load) {
+		path = &br->br_path;
+		AuDebugOn(!au_br_writable(br->br_perm));
+		if (unlikely(!au_br_writable(br->br_perm)))
+			goto out;
+	}
+
+	hdir = NULL;
+	if (suspend) {
+		dir = d_inode(sb->s_root);
+		hdir = au_hinode(au_ii(dir), bindex);
+		dir = hdir->hi_inode;
+		au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD);
+	} else {
+		dir = d_inode(path->dentry);
+		inode_lock_nested(dir, AuLsc_I_CHILD);
+	}
+	hinopath.mnt = path->mnt;
+	hinopath.dentry = vfsub_lkup_one(&hinoname, (struct path *)path);
+	err = PTR_ERR(hinopath.dentry);
+	if (IS_ERR(hinopath.dentry))
+		goto out_unlock;
+
+	err = 0;
+	flags = O_RDONLY;
+	if (load) {
+		if (d_is_negative(hinopath.dentry))
+			goto out_dput; /* success */
+	} else {
+		if (au_dr_hino_test_empty(&br->br_dirren)) {
+			if (d_is_positive(hinopath.dentry)) {
+				delegated = NULL;
+				err = vfsub_unlink(dir, &hinopath, &delegated,
+						   /*force*/0);
+				AuTraceErr(err);
+				if (unlikely(err))
+					pr_err("ignored err %d, %pd2\n",
+					       err, hinopath.dentry);
+				if (unlikely(err == -EWOULDBLOCK))
+					iput(delegated);
+				err = 0;
+			}
+			goto out_dput;
+		} else if (!d_is_positive(hinopath.dentry)) {
+			err = vfsub_create(dir, &hinopath, 0600,
+					   /*want_excl*/false);
+			AuTraceErr(err);
+			if (unlikely(err))
+				goto out_dput;
+		}
+		flags = O_WRONLY;
+	}
+	hinofile = vfsub_dentry_open(&hinopath, flags);
+	if (suspend)
+		au_hn_inode_unlock(hdir);
+	else
+		inode_unlock(dir);
+	dput(hinopath.dentry);
+	AuTraceErrPtr(hinofile);
+	if (IS_ERR(hinofile)) {
+		err = PTR_ERR(hinofile);
+		goto out;
+	}
+
+	if (load)
+		err = au_dr_hino_load(&br->br_dirren, hinofile);
+	else
+		err = au_dr_hino_store(sb, br, hinofile);
+	fput(hinofile);
+	goto out;
+
+out_dput:
+	dput(hinopath.dentry);
+out_unlock:
+	if (suspend)
+		au_hn_inode_unlock(hdir);
+	else
+		inode_unlock(dir);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_dr_brid_init(struct au_dr_brid *brid, const struct path *path)
+{
+	int err;
+	struct kstatfs kstfs;
+	dev_t dev;
+	struct dentry *dentry;
+	struct super_block *sb;
+
+	err = vfs_statfs((void *)path, &kstfs);
+	AuTraceErr(err);
+	if (unlikely(err))
+		goto out;
+
+	/* todo: support for UUID */
+
+	if (kstfs.f_fsid.val[0] || kstfs.f_fsid.val[1]) {
+		brid->type = AuBrid_FSID;
+		brid->fsid = kstfs.f_fsid;
+	} else {
+		dentry = path->dentry;
+		sb = dentry->d_sb;
+		dev = sb->s_dev;
+		if (dev) {
+			brid->type = AuBrid_DEV;
+			brid->dev = dev;
+		}
+	}
+
+out:
+	return err;
+}
+
+int au_dr_br_init(struct super_block *sb, struct au_branch *br,
+		  const struct path *path)
+{
+	int err, i;
+	struct au_dr_br *dr;
+	struct hlist_bl_head *hbl;
+
+	dr = &br->br_dirren;
+	hbl = dr->dr_h_ino;
+	for (i = 0; i < AuDirren_NHASH; i++, hbl++)
+		INIT_HLIST_BL_HEAD(hbl);
+
+	err = au_dr_brid_init(&dr->dr_brid, path);
+	if (unlikely(err))
+		goto out;
+
+	if (au_opt_test(au_mntflags(sb), DIRREN))
+		err = au_dr_hino(sb, /*bindex*/-1, br, path);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int au_dr_br_fin(struct super_block *sb, struct au_branch *br)
+{
+	int err;
+
+	err = 0;
+	if (au_br_writable(br->br_perm))
+		err = au_dr_hino(sb, /*bindex*/-1, br, /*path*/NULL);
+	if (!err)
+		au_dr_hino_free(&br->br_dirren);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_brid_str(struct au_dr_brid *brid, struct inode *h_inode,
+		       char *buf, size_t sz)
+{
+	int err;
+	unsigned int major, minor;
+	char *p;
+
+	p = buf;
+	err = snprintf(p, sz, "%d_", brid->type);
+	AuDebugOn(err > sz);
+	p += err;
+	sz -= err;
+	switch (brid->type) {
+	case AuBrid_Unset:
+		return -EINVAL;
+	case AuBrid_UUID:
+		err = snprintf(p, sz, "%pU", brid->uuid.b);
+		break;
+	case AuBrid_FSID:
+		err = snprintf(p, sz, "%08x-%08x",
+			       brid->fsid.val[0], brid->fsid.val[1]);
+		break;
+	case AuBrid_DEV:
+		major = MAJOR(brid->dev);
+		minor = MINOR(brid->dev);
+		if (major <= 0xff && minor <= 0xff)
+			err = snprintf(p, sz, "%02x%02x", major, minor);
+		else
+			err = snprintf(p, sz, "%03x:%05x", major, minor);
+		break;
+	}
+	AuDebugOn(err > sz);
+	p += err;
+	sz -= err;
+	err = snprintf(p, sz, "_%llu", (unsigned long long)h_inode->i_ino);
+	AuDebugOn(err > sz);
+	p += err;
+	sz -= err;
+
+	return p - buf;
+}
+
+static int au_drinfo_name(struct au_branch *br, char *name, int len)
+{
+	int rlen;
+	struct dentry *br_dentry;
+	struct inode *br_inode;
+
+	br_dentry = au_br_dentry(br);
+	br_inode = d_inode(br_dentry);
+	rlen = au_brid_str(&br->br_dirren.dr_brid, br_inode, name, len);
+	AuDebugOn(rlen >= AUFS_DIRREN_ENV_VAL_SZ);
+	AuDebugOn(rlen > len);
+
+	return rlen;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * from the given @h_dentry, construct drinfo at @*fdata.
+ * when the size of @*fdata is not enough, reallocate and return new @fdata and
+ * @allocated.
+ */
+static int au_drinfo_construct(struct au_drinfo_fdata **fdata,
+			       struct dentry *h_dentry,
+			       unsigned char *allocated)
+{
+	int err, v;
+	struct au_drinfo_fdata *f, *p;
+	struct au_drinfo *drinfo;
+	struct inode *h_inode;
+	struct qstr *qname;
+
+	err = 0;
+	f = *fdata;
+	h_inode = d_inode(h_dentry);
+	qname = &h_dentry->d_name;
+	drinfo = &f->drinfo;
+	drinfo->ino = (__force uint64_t)cpu_to_be64(h_inode->i_ino);
+	drinfo->oldnamelen = qname->len;
+	if (*allocated < sizeof(*f) + qname->len) {
+		v = roundup_pow_of_two(*allocated + qname->len);
+		p = au_krealloc(f, v, GFP_NOFS, /*may_shrink*/0);
+		if (unlikely(!p)) {
+			err = -ENOMEM;
+			AuTraceErr(err);
+			goto out;
+		}
+		f = p;
+		*fdata = f;
+		*allocated = v;
+		drinfo = &f->drinfo;
+	}
+	memcpy(drinfo->oldname, qname->name, qname->len);
+	AuDbg("i%llu, %.*s\n",
+	      be64_to_cpu((__force __be64)drinfo->ino), drinfo->oldnamelen,
+	      drinfo->oldname);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* callers have to free the return value */
+static struct au_drinfo *au_drinfo_read_k(struct file *file, ino_t h_ino)
+{
+	struct au_drinfo *ret, *drinfo;
+	struct au_drinfo_fdata fdata;
+	int len;
+	loff_t pos;
+	ssize_t ssz;
+
+	ret = ERR_PTR(-EIO);
+	pos = 0;
+	ssz = vfsub_read_k(file, &fdata, sizeof(fdata), &pos);
+	if (unlikely(ssz != sizeof(fdata))) {
+		AuIOErr("ssz %zd, %u, %pD2\n",
+			ssz, (unsigned int)sizeof(fdata), file);
+		goto out;
+	}
+
+	fdata.magic = ntohl((__force __be32)fdata.magic);
+	switch (fdata.magic) {
+	case AUFS_DRINFO_MAGIC_V1:
+		break;
+	default:
+		AuIOErr("magic-num 0x%x, 0x%x, %pD2\n",
+			fdata.magic, AUFS_DRINFO_MAGIC_V1, file);
+		goto out;
+	}
+
+	drinfo = &fdata.drinfo;
+	len = drinfo->oldnamelen;
+	if (!len) {
+		AuIOErr("broken drinfo %pD2\n", file);
+		goto out;
+	}
+
+	ret = NULL;
+	drinfo->ino = be64_to_cpu((__force __be64)drinfo->ino);
+	if (unlikely(h_ino && drinfo->ino != h_ino)) {
+		AuDbg("ignored i%llu, i%llu, %pD2\n",
+		      (unsigned long long)drinfo->ino,
+		      (unsigned long long)h_ino, file);
+		goto out; /* success */
+	}
+
+	ret = kmalloc(sizeof(*ret) + len, GFP_NOFS);
+	if (unlikely(!ret)) {
+		ret = ERR_PTR(-ENOMEM);
+		AuTraceErrPtr(ret);
+		goto out;
+	}
+
+	*ret = *drinfo;
+	ssz = vfsub_read_k(file, (void *)ret->oldname, len, &pos);
+	if (unlikely(ssz != len)) {
+		au_kfree_rcu(ret);
+		ret = ERR_PTR(-EIO);
+		AuIOErr("ssz %zd, %u, %pD2\n", ssz, len, file);
+		goto out;
+	}
+
+	AuDbg("oldname %.*s\n", ret->oldnamelen, ret->oldname);
+
+out:
+	return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* in order to be revertible */
+struct au_drinfo_rev_elm {
+	int			created;
+	struct dentry		*info_dentry;
+	struct au_drinfo	*info_last;
+};
+
+struct au_drinfo_rev {
+	unsigned char			already;
+	aufs_bindex_t			nelm;
+	struct au_drinfo_rev_elm	elm[];
+};
+
+/* todo: isn't it too large? */
+struct au_drinfo_store {
+	struct path h_ppath;
+	struct dentry *h_dentry;
+	struct au_drinfo_fdata *fdata;
+	char *infoname;			/* inside of whname, just after PFX */
+	char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ];
+	aufs_bindex_t btgt, btail;
+	unsigned char no_sio,
+		allocated,		/* current size of *fdata */
+		infonamelen,		/* room size for p */
+		whnamelen,		/* length of the generated name */
+		renameback;		/* renamed back */
+};
+
+/* on rename(2) error, the caller should revert it using @elm */
+static int au_drinfo_do_store(struct au_drinfo_store *w,
+			      struct au_drinfo_rev_elm *elm)
+{
+	int err, len;
+	ssize_t ssz;
+	loff_t pos;
+	struct path infopath = {
+		.mnt = w->h_ppath.mnt
+	};
+	struct inode *h_dir, *h_inode, *delegated;
+	struct file *infofile;
+	struct qstr *qname;
+
+	AuDebugOn(elm
+		  && memcmp(elm, page_address(ZERO_PAGE(0)), sizeof(*elm)));
+
+	infopath.dentry = vfsub_lookup_one_len(w->whname, &w->h_ppath,
+					       w->whnamelen);
+	AuTraceErrPtr(infopath.dentry);
+	if (IS_ERR(infopath.dentry)) {
+		err = PTR_ERR(infopath.dentry);
+		goto out;
+	}
+
+	err = 0;
+	h_dir = d_inode(w->h_ppath.dentry);
+	if (elm && d_is_negative(infopath.dentry)) {
+		err = vfsub_create(h_dir, &infopath, 0600, /*want_excl*/true);
+		AuTraceErr(err);
+		if (unlikely(err))
+			goto out_dput;
+		elm->created = 1;
+		elm->info_dentry = dget(infopath.dentry);
+	}
+
+	infofile = vfsub_dentry_open(&infopath, O_RDWR);
+	AuTraceErrPtr(infofile);
+	if (IS_ERR(infofile)) {
+		err = PTR_ERR(infofile);
+		goto out_dput;
+	}
+
+	h_inode = d_inode(infopath.dentry);
+	if (elm && i_size_read(h_inode)) {
+		h_inode = d_inode(w->h_dentry);
+		elm->info_last = au_drinfo_read_k(infofile, h_inode->i_ino);
+		AuTraceErrPtr(elm->info_last);
+		if (IS_ERR(elm->info_last)) {
+			err = PTR_ERR(elm->info_last);
+			elm->info_last = NULL;
+			AuDebugOn(elm->info_dentry);
+			goto out_fput;
+		}
+	}
+
+	if (elm && w->renameback) {
+		delegated = NULL;
+		err = vfsub_unlink(h_dir, &infopath, &delegated, /*force*/0);
+		AuTraceErr(err);
+		if (unlikely(err == -EWOULDBLOCK))
+			iput(delegated);
+		goto out_fput;
+	}
+
+	pos = 0;
+	qname = &w->h_dentry->d_name;
+	len = sizeof(*w->fdata) + qname->len;
+	if (!elm)
+		len = sizeof(*w->fdata) + w->fdata->drinfo.oldnamelen;
+	ssz = vfsub_write_k(infofile, w->fdata, len, &pos);
+	if (ssz == len) {
+		AuDbg("hi%llu, %.*s\n", w->fdata->drinfo.ino,
+		      w->fdata->drinfo.oldnamelen, w->fdata->drinfo.oldname);
+		goto out_fput; /* success */
+	} else {
+		err = -EIO;
+		if (ssz < 0)
+			err = ssz;
+		/* the caller should revert it using @elm */
+	}
+
+out_fput:
+	fput(infofile);
+out_dput:
+	dput(infopath.dentry);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+struct au_call_drinfo_do_store_args {
+	int *errp;
+	struct au_drinfo_store *w;
+	struct au_drinfo_rev_elm *elm;
+};
+
+static void au_call_drinfo_do_store(void *args)
+{
+	struct au_call_drinfo_do_store_args *a = args;
+
+	*a->errp = au_drinfo_do_store(a->w, a->elm);
+}
+
+static int au_drinfo_store_sio(struct au_drinfo_store *w,
+			       struct au_drinfo_rev_elm *elm)
+{
+	int err, wkq_err;
+
+	if (w->no_sio)
+		err = au_drinfo_do_store(w, elm);
+	else {
+		struct au_call_drinfo_do_store_args a = {
+			.errp	= &err,
+			.w	= w,
+			.elm	= elm
+		};
+		wkq_err = au_wkq_wait(au_call_drinfo_do_store, &a);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	}
+	AuTraceErr(err);
+
+	return err;
+}
+
+static int au_drinfo_store_work_init(struct au_drinfo_store *w,
+				     aufs_bindex_t btgt)
+{
+	int err;
+
+	memset(w, 0, sizeof(*w));
+	w->allocated = roundup_pow_of_two(sizeof(*w->fdata) + 40);
+	strcpy(w->whname, AUFS_WH_DR_INFO_PFX);
+	w->infoname = w->whname + sizeof(AUFS_WH_DR_INFO_PFX) - 1;
+	w->infonamelen = sizeof(w->whname) - sizeof(AUFS_WH_DR_INFO_PFX);
+	w->btgt = btgt;
+	w->no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID);
+
+	err = -ENOMEM;
+	w->fdata = kcalloc(1, w->allocated, GFP_NOFS);
+	if (unlikely(!w->fdata)) {
+		AuTraceErr(err);
+		goto out;
+	}
+	w->fdata->magic = (__force uint32_t)htonl(AUFS_DRINFO_MAGIC_V1);
+	err = 0;
+
+out:
+	return err;
+}
+
+static void au_drinfo_store_work_fin(struct au_drinfo_store *w)
+{
+	au_kfree_rcu(w->fdata);
+}
+
+static void au_drinfo_store_rev(struct au_drinfo_rev *rev,
+				struct au_drinfo_store *w)
+{
+	struct au_drinfo_rev_elm *elm;
+	struct inode *h_dir, *delegated;
+	int err, nelm;
+	struct path infopath = {
+		.mnt = w->h_ppath.mnt
+	};
+
+	h_dir = d_inode(w->h_ppath.dentry);
+	IMustLock(h_dir);
+
+	err = 0;
+	elm = rev->elm;
+	for (nelm = rev->nelm; nelm > 0; nelm--, elm++) {
+		AuDebugOn(elm->created && elm->info_last);
+		if (elm->created) {
+			AuDbg("here\n");
+			delegated = NULL;
+			infopath.dentry = elm->info_dentry;
+			err = vfsub_unlink(h_dir, &infopath, &delegated,
+					   !w->no_sio);
+			AuTraceErr(err);
+			if (unlikely(err == -EWOULDBLOCK))
+				iput(delegated);
+			dput(elm->info_dentry);
+		} else if (elm->info_last) {
+			AuDbg("here\n");
+			w->fdata->drinfo = *elm->info_last;
+			memcpy(w->fdata->drinfo.oldname,
+			       elm->info_last->oldname,
+			       elm->info_last->oldnamelen);
+			err = au_drinfo_store_sio(w, /*elm*/NULL);
+			au_kfree_rcu(elm->info_last);
+		}
+		if (unlikely(err))
+			AuIOErr("%d, %s\n", err, w->whname);
+		/* go on even if err */
+	}
+}
+
+/* caller has to call au_dr_rename_fin() later */
+static int au_drinfo_store(struct dentry *dentry, aufs_bindex_t btgt,
+			   struct qstr *dst_name, void *_rev)
+{
+	int err, sz, nelm;
+	aufs_bindex_t bindex, btail;
+	struct au_drinfo_store work;
+	struct au_drinfo_rev *rev, **p;
+	struct au_drinfo_rev_elm *elm;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct au_hinode *hdir;
+
+	err = au_drinfo_store_work_init(&work, btgt);
+	AuTraceErr(err);
+	if (unlikely(err))
+		goto out;
+
+	err = -ENOMEM;
+	btail = au_dbtaildir(dentry);
+	nelm = btail - btgt;
+	sz = sizeof(*rev) + sizeof(*elm) * nelm;
+	rev = kcalloc(1, sz, GFP_NOFS);
+	if (unlikely(!rev)) {
+		AuTraceErr(err);
+		goto out_args;
+	}
+	rev->nelm = nelm;
+	elm = rev->elm;
+	p = _rev;
+	*p = rev;
+
+	err = 0;
+	sb = dentry->d_sb;
+	work.h_ppath.dentry = au_h_dptr(dentry, btgt);
+	work.h_ppath.mnt = au_sbr_mnt(sb, btgt);
+	hdir = au_hi(d_inode(dentry), btgt);
+	au_hn_inode_lock_nested(hdir, AuLsc_I_CHILD);
+	for (bindex = btgt + 1; bindex <= btail; bindex++, elm++) {
+		work.h_dentry = au_h_dptr(dentry, bindex);
+		if (!work.h_dentry)
+			continue;
+
+		err = au_drinfo_construct(&work.fdata, work.h_dentry,
+					  &work.allocated);
+		AuTraceErr(err);
+		if (unlikely(err))
+			break;
+
+		work.renameback = au_qstreq(&work.h_dentry->d_name, dst_name);
+		br = au_sbr(sb, bindex);
+		work.whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1;
+		work.whnamelen += au_drinfo_name(br, work.infoname,
+						 work.infonamelen);
+		AuDbg("whname %.*s, i%llu, %.*s\n",
+		      work.whnamelen, work.whname,
+		      be64_to_cpu((__force __be64)work.fdata->drinfo.ino),
+		      work.fdata->drinfo.oldnamelen,
+		      work.fdata->drinfo.oldname);
+
+		err = au_drinfo_store_sio(&work, elm);
+		AuTraceErr(err);
+		if (unlikely(err))
+			break;
+	}
+	if (unlikely(err)) {
+		/* revert all drinfo */
+		au_drinfo_store_rev(rev, &work);
+		au_kfree_try_rcu(rev);
+		*p = NULL;
+	}
+	au_hn_inode_unlock(hdir);
+
+out_args:
+	au_drinfo_store_work_fin(&work);
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_dr_rename(struct dentry *src, aufs_bindex_t bindex,
+		 struct qstr *dst_name, void *_rev)
+{
+	int err, already;
+	ino_t ino;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct au_dr_br *dr;
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+	struct au_dr_hino *ent;
+	struct au_drinfo_rev *rev, **p;
+
+	AuDbg("bindex %d\n", bindex);
+
+	err = -ENOMEM;
+	ent = kmalloc(sizeof(*ent), GFP_NOFS);
+	if (unlikely(!ent))
+		goto out;
+
+	sb = src->d_sb;
+	br = au_sbr(sb, bindex);
+	dr = &br->br_dirren;
+	h_dentry = au_h_dptr(src, bindex);
+	h_inode = d_inode(h_dentry);
+	ino = h_inode->i_ino;
+	ent->dr_h_ino = ino;
+	already = au_dr_hino_test_add(dr, ino, ent);
+	AuDbg("b%d, hi%llu, already %d\n",
+	      bindex, (unsigned long long)ino, already);
+
+	err = au_drinfo_store(src, bindex, dst_name, _rev);
+	AuTraceErr(err);
+	if (!err) {
+		p = _rev;
+		rev = *p;
+		rev->already = already;
+		goto out; /* success */
+	}
+
+	/* revert */
+	if (!already)
+		au_dr_hino_del(dr, ent);
+	au_kfree_rcu(ent);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *_rev)
+{
+	struct au_drinfo_rev *rev;
+	struct au_drinfo_rev_elm *elm;
+	int nelm;
+
+	rev = _rev;
+	elm = rev->elm;
+	for (nelm = rev->nelm; nelm > 0; nelm--, elm++) {
+		dput(elm->info_dentry);
+		au_kfree_rcu(elm->info_last);
+	}
+	au_kfree_try_rcu(rev);
+}
+
+void au_dr_rename_rev(struct dentry *src, aufs_bindex_t btgt, void *_rev)
+{
+	int err;
+	struct au_drinfo_store work;
+	struct au_drinfo_rev *rev = _rev;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct inode *h_inode;
+	struct au_dr_br *dr;
+	struct au_dr_hino *ent;
+
+	err = au_drinfo_store_work_init(&work, btgt);
+	if (unlikely(err))
+		goto out;
+
+	sb = src->d_sb;
+	br = au_sbr(sb, btgt);
+	work.h_ppath.dentry = au_h_dptr(src, btgt);
+	work.h_ppath.mnt = au_br_mnt(br);
+	au_drinfo_store_rev(rev, &work);
+	au_drinfo_store_work_fin(&work);
+	if (rev->already)
+		goto out;
+
+	dr = &br->br_dirren;
+	h_inode = d_inode(work.h_ppath.dentry);
+	ent = au_dr_hino_find(dr, h_inode->i_ino);
+	BUG_ON(!ent);
+	au_dr_hino_del(dr, ent);
+	au_kfree_rcu(ent);
+
+out:
+	au_kfree_try_rcu(rev);
+	if (unlikely(err))
+		pr_err("failed to remove dirren info\n");
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct au_drinfo *au_drinfo_do_load(struct path *h_ppath,
+					   char *whname, int whnamelen,
+					   struct dentry **info_dentry)
+{
+	struct au_drinfo *drinfo;
+	struct file *f;
+	struct inode *h_dir;
+	struct path infopath;
+	int unlocked;
+
+	AuDbg("%pd/%.*s\n", h_ppath->dentry, whnamelen, whname);
+
+	*info_dentry = NULL;
+	drinfo = NULL;
+	unlocked = 0;
+	h_dir = d_inode(h_ppath->dentry);
+	inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
+	infopath.dentry = vfsub_lookup_one_len(whname, h_ppath, whnamelen);
+	if (IS_ERR(infopath.dentry)) {
+		drinfo = (void *)infopath.dentry;
+		goto out;
+	}
+
+	if (d_is_negative(infopath.dentry))
+		goto out_dput; /* success */
+
+	infopath.mnt = h_ppath->mnt;
+	f = vfsub_dentry_open(&infopath, O_RDONLY);
+	inode_unlock_shared(h_dir);
+	unlocked = 1;
+	if (IS_ERR(f)) {
+		drinfo = (void *)f;
+		goto out_dput;
+	}
+
+	drinfo = au_drinfo_read_k(f, /*h_ino*/0);
+	if (IS_ERR_OR_NULL(drinfo))
+		goto out_fput;
+
+	AuDbg("oldname %.*s\n", drinfo->oldnamelen, drinfo->oldname);
+	*info_dentry = dget(infopath.dentry); /* keep it alive */
+
+out_fput:
+	fput(f);
+out_dput:
+	dput(infopath.dentry);
+out:
+	if (!unlocked)
+		inode_unlock_shared(h_dir);
+	AuTraceErrPtr(drinfo);
+	return drinfo;
+}
+
+struct au_drinfo_do_load_args {
+	struct au_drinfo **drinfop;
+	struct path *h_ppath;
+	char *whname;
+	int whnamelen;
+	struct dentry **info_dentry;
+};
+
+static void au_call_drinfo_do_load(void *args)
+{
+	struct au_drinfo_do_load_args *a = args;
+
+	*a->drinfop = au_drinfo_do_load(a->h_ppath, a->whname, a->whnamelen,
+					a->info_dentry);
+}
+
+struct au_drinfo_load {
+	struct path h_ppath;
+	struct qstr *qname;
+	unsigned char no_sio;
+
+	aufs_bindex_t ninfo;
+	struct au_drinfo **drinfo;
+};
+
+static int au_drinfo_load(struct au_drinfo_load *w, aufs_bindex_t bindex,
+			  struct au_branch *br)
+{
+	int err, wkq_err, whnamelen, e;
+	char whname[sizeof(AUFS_WH_DR_INFO_PFX) + AUFS_DIRREN_ENV_VAL_SZ]
+		= AUFS_WH_DR_INFO_PFX;
+	struct au_drinfo *drinfo;
+	struct qstr oldname;
+	struct inode *h_dir, *delegated;
+	struct dentry *info_dentry;
+	struct path infopath;
+
+	whnamelen = sizeof(AUFS_WH_DR_INFO_PFX) - 1;
+	whnamelen += au_drinfo_name(br, whname + whnamelen,
+				    sizeof(whname) - whnamelen);
+	if (w->no_sio)
+		drinfo = au_drinfo_do_load(&w->h_ppath, whname, whnamelen,
+					   &info_dentry);
+	else {
+		struct au_drinfo_do_load_args args = {
+			.drinfop	= &drinfo,
+			.h_ppath	= &w->h_ppath,
+			.whname		= whname,
+			.whnamelen	= whnamelen,
+			.info_dentry	= &info_dentry
+		};
+		wkq_err = au_wkq_wait(au_call_drinfo_do_load, &args);
+		if (unlikely(wkq_err))
+			drinfo = ERR_PTR(wkq_err);
+	}
+	err = PTR_ERR(drinfo);
+	if (IS_ERR_OR_NULL(drinfo))
+		goto out;
+
+	err = 0;
+	oldname.len = drinfo->oldnamelen;
+	oldname.name = drinfo->oldname;
+	if (au_qstreq(w->qname, &oldname)) {
+		/* the name is renamed back */
+		au_kfree_rcu(drinfo);
+		drinfo = NULL;
+
+		infopath.dentry = info_dentry;
+		infopath.mnt = w->h_ppath.mnt;
+		h_dir = d_inode(w->h_ppath.dentry);
+		delegated = NULL;
+		inode_lock_nested(h_dir, AuLsc_I_PARENT);
+		e = vfsub_unlink(h_dir, &infopath, &delegated, !w->no_sio);
+		inode_unlock(h_dir);
+		if (unlikely(e))
+			AuIOErr("ignored %d, %pd2\n", e, &infopath.dentry);
+		if (unlikely(e == -EWOULDBLOCK))
+			iput(delegated);
+	}
+	au_kfree_rcu(w->drinfo[bindex]);
+	w->drinfo[bindex] = drinfo;
+	dput(info_dentry);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_dr_lkup_free(struct au_drinfo **drinfo, int n)
+{
+	struct au_drinfo **p = drinfo;
+
+	while (n-- > 0)
+		au_kfree_rcu(*drinfo++);
+	au_kfree_try_rcu(p);
+}
+
+int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry,
+	       aufs_bindex_t btgt)
+{
+	int err, ninfo;
+	struct au_drinfo_load w;
+	aufs_bindex_t bindex, bbot;
+	struct au_branch *br;
+	struct inode *h_dir;
+	struct au_dr_hino *ent;
+	struct super_block *sb;
+
+	AuDbg("%.*s, name %.*s, whname %.*s, b%d\n",
+	      AuLNPair(&dentry->d_name), AuLNPair(&lkup->dirren.dr_name),
+	      AuLNPair(&lkup->whname), btgt);
+
+	sb = dentry->d_sb;
+	bbot = au_sbbot(sb);
+	w.ninfo = bbot + 1;
+	if (!lkup->dirren.drinfo) {
+		lkup->dirren.drinfo = kcalloc(w.ninfo,
+					      sizeof(*lkup->dirren.drinfo),
+					      GFP_NOFS);
+		if (unlikely(!lkup->dirren.drinfo)) {
+			err = -ENOMEM;
+			goto out;
+		}
+		lkup->dirren.ninfo = w.ninfo;
+	}
+	w.drinfo = lkup->dirren.drinfo;
+	w.no_sio = !!uid_eq(current_fsuid(), GLOBAL_ROOT_UID);
+	w.h_ppath.dentry = au_h_dptr(dentry, btgt);
+	AuDebugOn(!w.h_ppath.dentry);
+	w.h_ppath.mnt = au_sbr_mnt(sb, btgt);
+	w.qname = &dentry->d_name;
+
+	ninfo = 0;
+	for (bindex = btgt + 1; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		err = au_drinfo_load(&w, bindex, br);
+		if (unlikely(err))
+			goto out_free;
+		if (w.drinfo[bindex])
+			ninfo++;
+	}
+	if (!ninfo) {
+		br = au_sbr(sb, btgt);
+		h_dir = d_inode(w.h_ppath.dentry);
+		ent = au_dr_hino_find(&br->br_dirren, h_dir->i_ino);
+		AuDebugOn(!ent);
+		au_dr_hino_del(&br->br_dirren, ent);
+		au_kfree_rcu(ent);
+	}
+	goto out; /* success */
+
+out_free:
+	au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo);
+	lkup->dirren.ninfo = 0;
+	lkup->dirren.drinfo = NULL;
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+void au_dr_lkup_fin(struct au_do_lookup_args *lkup)
+{
+	au_dr_lkup_free(lkup->dirren.drinfo, lkup->dirren.ninfo);
+}
+
+int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt)
+{
+	int err;
+	struct au_drinfo *drinfo;
+
+	err = 0;
+	if (!lkup->dirren.drinfo)
+		goto out;
+	AuDebugOn(lkup->dirren.ninfo <= btgt);
+	drinfo = lkup->dirren.drinfo[btgt];
+	if (!drinfo)
+		goto out;
+
+	au_kfree_try_rcu(lkup->whname.name);
+	lkup->whname.name = NULL;
+	lkup->dirren.dr_name.len = drinfo->oldnamelen;
+	lkup->dirren.dr_name.name = drinfo->oldname;
+	lkup->name = &lkup->dirren.dr_name;
+	err = au_wh_name_alloc(&lkup->whname, lkup->name);
+	if (!err)
+		AuDbg("name %.*s, whname %.*s, b%d\n",
+		      AuLNPair(lkup->name), AuLNPair(&lkup->whname),
+		      btgt);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex,
+		     ino_t h_ino)
+{
+	int match;
+	struct au_drinfo *drinfo;
+
+	match = 1;
+	if (!lkup->dirren.drinfo)
+		goto out;
+	AuDebugOn(lkup->dirren.ninfo <= bindex);
+	drinfo = lkup->dirren.drinfo[bindex];
+	if (!drinfo)
+		goto out;
+
+	match = (drinfo->ino == h_ino);
+	AuDbg("match %d\n", match);
+
+out:
+	return match;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_dr_opt_set(struct super_block *sb)
+{
+	int err;
+	aufs_bindex_t bindex, bbot;
+	struct au_branch *br;
+
+	err = 0;
+	bbot = au_sbbot(sb);
+	for (bindex = 0; !err && bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		err = au_dr_hino(sb, bindex, /*br*/NULL, &br->br_path);
+	}
+
+	return err;
+}
+
+int au_dr_opt_flush(struct super_block *sb)
+{
+	int err;
+	aufs_bindex_t bindex, bbot;
+	struct au_branch *br;
+
+	err = 0;
+	bbot = au_sbbot(sb);
+	for (bindex = 0; !err && bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		if (au_br_writable(br->br_perm))
+			err = au_dr_hino(sb, bindex, /*br*/NULL, /*path*/NULL);
+	}
+
+	return err;
+}
+
+int au_dr_opt_clr(struct super_block *sb, int no_flush)
+{
+	int err;
+	aufs_bindex_t bindex, bbot;
+	struct au_branch *br;
+
+	err = 0;
+	if (!no_flush) {
+		err = au_dr_opt_flush(sb);
+		if (unlikely(err))
+			goto out;
+	}
+
+	bbot = au_sbbot(sb);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		au_dr_hino_free(&br->br_dirren);
+	}
+
+out:
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/dirren.h b/fs/aufs/dirren.h
--- a/fs/aufs/dirren.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dirren.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,140 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2017-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * renamed dir info
+ */
+
+#ifndef __AUFS_DIRREN_H__
+#define __AUFS_DIRREN_H__
+
+#ifdef __KERNEL__
+
+#include <linux/dcache.h>
+#include <linux/statfs.h>
+#include <linux/uuid.h>
+#include "hbl.h"
+
+#define AuDirren_NHASH 100
+
+#ifdef CONFIG_AUFS_DIRREN
+enum au_brid_type {
+	AuBrid_Unset,
+	AuBrid_UUID,
+	AuBrid_FSID,
+	AuBrid_DEV
+};
+
+struct au_dr_brid {
+	enum au_brid_type	type;
+	union {
+		uuid_t	uuid;	/* unimplemented yet */
+		fsid_t	fsid;
+		dev_t	dev;
+	};
+};
+
+/* 20 is the max digits length of ulong 64 */
+/* brid-type "_" uuid "_" inum */
+#define AUFS_DIRREN_FNAME_SZ	(1 + 1 + UUID_STRING_LEN + 20)
+#define AUFS_DIRREN_ENV_VAL_SZ	(AUFS_DIRREN_FNAME_SZ + 1 + 20)
+
+struct au_dr_hino {
+	struct hlist_bl_node	dr_hnode;
+	ino_t			dr_h_ino;
+};
+
+struct au_dr_br {
+	struct hlist_bl_head	dr_h_ino[AuDirren_NHASH];
+	struct au_dr_brid	dr_brid;
+};
+
+struct au_dr_lookup {
+	/* dr_name is pointed by struct au_do_lookup_args.name */
+	struct qstr		dr_name; /* subset of dr_info */
+	aufs_bindex_t		ninfo;
+	struct au_drinfo	**drinfo;
+};
+#else
+struct au_dr_hino;
+/* empty */
+struct au_dr_br { };
+struct au_dr_lookup { };
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+struct au_branch;
+struct au_do_lookup_args;
+struct au_hinode;
+#ifdef CONFIG_AUFS_DIRREN
+int au_dr_hino_test_add(struct au_dr_br *dr, ino_t h_ino,
+			struct au_dr_hino *add_ent);
+void au_dr_hino_free(struct au_dr_br *dr);
+int au_dr_br_init(struct super_block *sb, struct au_branch *br,
+		  const struct path *path);
+int au_dr_br_fin(struct super_block *sb, struct au_branch *br);
+int au_dr_rename(struct dentry *src, aufs_bindex_t bindex,
+		 struct qstr *dst_name, void *_rev);
+void au_dr_rename_fin(struct dentry *src, aufs_bindex_t btgt, void *rev);
+void au_dr_rename_rev(struct dentry *src, aufs_bindex_t bindex, void *rev);
+int au_dr_lkup(struct au_do_lookup_args *lkup, struct dentry *dentry,
+	       aufs_bindex_t bindex);
+int au_dr_lkup_name(struct au_do_lookup_args *lkup, aufs_bindex_t btgt);
+int au_dr_lkup_h_ino(struct au_do_lookup_args *lkup, aufs_bindex_t bindex,
+		     ino_t h_ino);
+void au_dr_lkup_fin(struct au_do_lookup_args *lkup);
+int au_dr_opt_set(struct super_block *sb);
+int au_dr_opt_flush(struct super_block *sb);
+int au_dr_opt_clr(struct super_block *sb, int no_flush);
+#else
+AuStubInt0(au_dr_hino_test_add, struct au_dr_br *dr, ino_t h_ino,
+	   struct au_dr_hino *add_ent);
+AuStubVoid(au_dr_hino_free, struct au_dr_br *dr);
+AuStubInt0(au_dr_br_init, struct super_block *sb, struct au_branch *br,
+	   const struct path *path);
+AuStubInt0(au_dr_br_fin, struct super_block *sb, struct au_branch *br);
+AuStubInt0(au_dr_rename, struct dentry *src, aufs_bindex_t bindex,
+	   struct qstr *dst_name, void *_rev);
+AuStubVoid(au_dr_rename_fin, struct dentry *src, aufs_bindex_t btgt, void *rev);
+AuStubVoid(au_dr_rename_rev, struct dentry *src, aufs_bindex_t bindex,
+	   void *rev);
+AuStubInt0(au_dr_lkup, struct au_do_lookup_args *lkup, struct dentry *dentry,
+	   aufs_bindex_t bindex);
+AuStubInt0(au_dr_lkup_name, struct au_do_lookup_args *lkup, aufs_bindex_t btgt);
+AuStubInt0(au_dr_lkup_h_ino, struct au_do_lookup_args *lkup,
+	   aufs_bindex_t bindex, ino_t h_ino);
+AuStubVoid(au_dr_lkup_fin, struct au_do_lookup_args *lkup);
+AuStubInt0(au_dr_opt_set, struct super_block *sb);
+AuStubInt0(au_dr_opt_flush, struct super_block *sb);
+AuStubInt0(au_dr_opt_clr, struct super_block *sb, int no_flush);
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_DIRREN
+static inline int au_dr_ihash(ino_t h_ino)
+{
+	return h_ino % AuDirren_NHASH;
+}
+#else
+AuStubInt0(au_dr_ihash, ino_t h_ino);
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DIRREN_H__ */
diff -Naur --no-dereference a/fs/aufs/dynop.c b/fs/aufs/dynop.c
--- a/fs/aufs/dynop.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dynop.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2010-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * dynamically customizable operations for regular files
+ */
+
+#include "aufs.h"
+
+#define DyPrSym(key)	AuDbgSym(key->dk_op.dy_hop)
+
+/*
+ * How large will these lists be?
+ * Usually just a few elements, 20-30 at most for each, I guess.
+ */
+static struct hlist_bl_head dynop[AuDyLast];
+
+static struct au_dykey *dy_gfind_get(struct hlist_bl_head *hbl,
+				     const void *h_op)
+{
+	struct au_dykey *key, *tmp;
+	struct hlist_bl_node *pos;
+
+	key = NULL;
+	hlist_bl_lock(hbl);
+	hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode)
+		if (tmp->dk_op.dy_hop == h_op) {
+			if (kref_get_unless_zero(&tmp->dk_kref))
+				key = tmp;
+			break;
+		}
+	hlist_bl_unlock(hbl);
+
+	return key;
+}
+
+static struct au_dykey *dy_bradd(struct au_branch *br, struct au_dykey *key)
+{
+	struct au_dykey **k, *found;
+	const void *h_op = key->dk_op.dy_hop;
+	int i;
+
+	found = NULL;
+	k = br->br_dykey;
+	for (i = 0; i < AuBrDynOp; i++)
+		if (k[i]) {
+			if (k[i]->dk_op.dy_hop == h_op) {
+				found = k[i];
+				break;
+			}
+		} else
+			break;
+	if (!found) {
+		spin_lock(&br->br_dykey_lock);
+		for (; i < AuBrDynOp; i++)
+			if (k[i]) {
+				if (k[i]->dk_op.dy_hop == h_op) {
+					found = k[i];
+					break;
+				}
+			} else {
+				k[i] = key;
+				break;
+			}
+		spin_unlock(&br->br_dykey_lock);
+		BUG_ON(i == AuBrDynOp); /* expand the array */
+	}
+
+	return found;
+}
+
+/* kref_get() if @key is already added */
+static struct au_dykey *dy_gadd(struct hlist_bl_head *hbl, struct au_dykey *key)
+{
+	struct au_dykey *tmp, *found;
+	struct hlist_bl_node *pos;
+	const void *h_op = key->dk_op.dy_hop;
+
+	found = NULL;
+	hlist_bl_lock(hbl);
+	hlist_bl_for_each_entry(tmp, pos, hbl, dk_hnode)
+		if (tmp->dk_op.dy_hop == h_op) {
+			if (kref_get_unless_zero(&tmp->dk_kref))
+				found = tmp;
+			break;
+		}
+	if (!found)
+		hlist_bl_add_head(&key->dk_hnode, hbl);
+	hlist_bl_unlock(hbl);
+
+	if (!found)
+		DyPrSym(key);
+	return found;
+}
+
+static void dy_free_rcu(struct rcu_head *rcu)
+{
+	struct au_dykey *key;
+
+	key = container_of(rcu, struct au_dykey, dk_rcu);
+	DyPrSym(key);
+	kfree(key);
+}
+
+static void dy_free(struct kref *kref)
+{
+	struct au_dykey *key;
+	struct hlist_bl_head *hbl;
+
+	key = container_of(kref, struct au_dykey, dk_kref);
+	hbl = dynop + key->dk_op.dy_type;
+	au_hbl_del(&key->dk_hnode, hbl);
+	call_rcu(&key->dk_rcu, dy_free_rcu);
+}
+
+void au_dy_put(struct au_dykey *key)
+{
+	kref_put(&key->dk_kref, dy_free);
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define DyDbgSize(cnt, op)	AuDebugOn(cnt != sizeof(op)/sizeof(void *))
+
+#ifdef CONFIG_AUFS_DEBUG
+#define DyDbgDeclare(cnt)	unsigned int cnt = 0
+#define DyDbgInc(cnt)		do { cnt++; } while (0)
+#else
+#define DyDbgDeclare(cnt)	do {} while (0)
+#define DyDbgInc(cnt)		do {} while (0)
+#endif
+
+#define DySet(func, dst, src, h_op, h_sb) do {				\
+	DyDbgInc(cnt);							\
+	if (h_op->func) {						\
+		if (src.func)						\
+			dst.func = src.func;				\
+		else							\
+			AuDbg("%s %s\n", au_sbtype(h_sb), #func);	\
+	}								\
+} while (0)
+
+#define DySetForce(func, dst, src) do {		\
+	AuDebugOn(!src.func);			\
+	DyDbgInc(cnt);				\
+	dst.func = src.func;			\
+} while (0)
+
+#define DySetAop(func) \
+	DySet(func, dyaop->da_op, aufs_aop, h_aop, h_sb)
+#define DySetAopForce(func) \
+	DySetForce(func, dyaop->da_op, aufs_aop)
+
+static void dy_aop(struct au_dykey *key, const void *h_op,
+		   struct super_block *h_sb __maybe_unused)
+{
+	struct au_dyaop *dyaop = (void *)key;
+	const struct address_space_operations *h_aop = h_op;
+	DyDbgDeclare(cnt);
+
+	AuDbg("%s\n", au_sbtype(h_sb));
+
+	DySetAop(writepage);
+	DySetAopForce(readpage);	/* force */
+	DySetAop(writepages);
+	DySetAop(set_page_dirty);
+	DySetAop(readpages);
+	DySetAop(readahead);
+	DySetAop(write_begin);
+	DySetAop(write_end);
+	DySetAop(bmap);
+	DySetAop(invalidatepage);
+	DySetAop(releasepage);
+	DySetAop(freepage);
+	/* this one will be changed according to an aufs mount option */
+	DySetAop(direct_IO);
+	DySetAop(migratepage);
+	DySetAop(isolate_page);
+	DySetAop(putback_page);
+	DySetAop(launder_page);
+	DySetAop(is_partially_uptodate);
+	DySetAop(is_dirty_writeback);
+	DySetAop(error_remove_page);
+	DySetAop(swap_activate);
+	DySetAop(swap_deactivate);
+
+	DyDbgSize(cnt, *h_aop);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void dy_bug(struct kref *kref)
+{
+	BUG();
+}
+
+static struct au_dykey *dy_get(struct au_dynop *op, struct au_branch *br)
+{
+	struct au_dykey *key, *old;
+	struct hlist_bl_head *hbl;
+	struct op {
+		unsigned int sz;
+		void (*set)(struct au_dykey *key, const void *h_op,
+			    struct super_block *h_sb __maybe_unused);
+	};
+	static const struct op a[] = {
+		[AuDy_AOP] = {
+			.sz	= sizeof(struct au_dyaop),
+			.set	= dy_aop
+		}
+	};
+	const struct op *p;
+
+	hbl = dynop + op->dy_type;
+	key = dy_gfind_get(hbl, op->dy_hop);
+	if (key)
+		goto out_add; /* success */
+
+	p = a + op->dy_type;
+	key = kzalloc(p->sz, GFP_NOFS);
+	if (unlikely(!key)) {
+		key = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+
+	key->dk_op.dy_hop = op->dy_hop;
+	kref_init(&key->dk_kref);
+	p->set(key, op->dy_hop, au_br_sb(br));
+	old = dy_gadd(hbl, key);
+	if (old) {
+		au_kfree_rcu(key);
+		key = old;
+	}
+
+out_add:
+	old = dy_bradd(br, key);
+	if (old)
+		/* its ref-count should never be zero here */
+		kref_put(&key->dk_kref, dy_bug);
+out:
+	return key;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * Aufs prohibits O_DIRECT by default even if the branch supports it.
+ * This behaviour is necessary to return an error from open(O_DIRECT) instead
+ * of the succeeding I/O. The dio mount option enables O_DIRECT and makes
+ * open(O_DIRECT) always succeed, but the succeeding I/O may return an error.
+ * See the aufs manual in detail.
+ */
+static void dy_adx(struct au_dyaop *dyaop, int do_dx)
+{
+	if (!do_dx)
+		dyaop->da_op.direct_IO = NULL;
+	else
+		dyaop->da_op.direct_IO = aufs_aop.direct_IO;
+}
+
+static struct au_dyaop *dy_aget(struct au_branch *br,
+				const struct address_space_operations *h_aop,
+				int do_dx)
+{
+	struct au_dyaop *dyaop;
+	struct au_dynop op;
+
+	op.dy_type = AuDy_AOP;
+	op.dy_haop = h_aop;
+	dyaop = (void *)dy_get(&op, br);
+	if (IS_ERR(dyaop))
+		goto out;
+	dy_adx(dyaop, do_dx);
+
+out:
+	return dyaop;
+}
+
+int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex,
+		struct inode *h_inode)
+{
+	int err, do_dx;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct au_dyaop *dyaop;
+
+	AuDebugOn(!S_ISREG(h_inode->i_mode));
+	IiMustWriteLock(inode);
+
+	sb = inode->i_sb;
+	br = au_sbr(sb, bindex);
+	do_dx = !!au_opt_test(au_mntflags(sb), DIO);
+	dyaop = dy_aget(br, h_inode->i_mapping->a_ops, do_dx);
+	err = PTR_ERR(dyaop);
+	if (IS_ERR(dyaop))
+		/* unnecessary to call dy_fput() */
+		goto out;
+
+	err = 0;
+	inode->i_mapping->a_ops = &dyaop->da_op;
+
+out:
+	return err;
+}
+
+/*
+ * Is it safe to replace a_ops during the inode/file is in operation?
+ * Yes, I hope so.
+ */
+int au_dy_irefresh(struct inode *inode)
+{
+	int err;
+	aufs_bindex_t btop;
+	struct inode *h_inode;
+
+	err = 0;
+	if (S_ISREG(inode->i_mode)) {
+		btop = au_ibtop(inode);
+		h_inode = au_h_iptr(inode, btop);
+		err = au_dy_iaop(inode, btop, h_inode);
+	}
+	return err;
+}
+
+void au_dy_arefresh(int do_dx)
+{
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos;
+	struct au_dykey *key;
+
+	hbl = dynop + AuDy_AOP;
+	hlist_bl_lock(hbl);
+	hlist_bl_for_each_entry(key, pos, hbl, dk_hnode)
+		dy_adx((void *)key, do_dx);
+	hlist_bl_unlock(hbl);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void __init au_dy_init(void)
+{
+	int i;
+
+	for (i = 0; i < AuDyLast; i++)
+		INIT_HLIST_BL_HEAD(dynop + i);
+}
+
+void au_dy_fin(void)
+{
+	int i;
+
+	for (i = 0; i < AuDyLast; i++)
+		WARN_ON(!hlist_bl_empty(dynop + i));
+}
diff -Naur --no-dereference a/fs/aufs/dynop.h b/fs/aufs/dynop.h
--- a/fs/aufs/dynop.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/dynop.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2010-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * dynamically customizable operations (for regular files only)
+ */
+
+#ifndef __AUFS_DYNOP_H__
+#define __AUFS_DYNOP_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/kref.h>
+
+enum {AuDy_AOP, AuDyLast};
+
+struct au_dynop {
+	int						dy_type;
+	union {
+		const void				*dy_hop;
+		const struct address_space_operations	*dy_haop;
+	};
+};
+
+struct au_dykey {
+	union {
+		struct hlist_bl_node	dk_hnode;
+		struct rcu_head		dk_rcu;
+	};
+	struct au_dynop		dk_op;
+
+	/*
+	 * during I am in the branch local array, kref is gotten. when the
+	 * branch is removed, kref is put.
+	 */
+	struct kref		dk_kref;
+};
+
+/* stop unioning since their sizes are very different from each other */
+struct au_dyaop {
+	struct au_dykey			da_key;
+	struct address_space_operations	da_op; /* not const */
+};
+/* make sure that 'struct au_dykey *' can be any type */
+static_assert(!offsetof(struct au_dyaop, da_key));
+
+/* ---------------------------------------------------------------------- */
+
+/* dynop.c */
+struct au_branch;
+void au_dy_put(struct au_dykey *key);
+int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex,
+		struct inode *h_inode);
+int au_dy_irefresh(struct inode *inode);
+void au_dy_arefresh(int do_dio);
+
+void __init au_dy_init(void);
+void au_dy_fin(void);
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DYNOP_H__ */
diff -Naur --no-dereference a/fs/aufs/export.c b/fs/aufs/export.c
--- a/fs/aufs/export.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/export.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,830 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * export via nfs
+ */
+
+#include <linux/exportfs.h>
+#include <linux/fs_struct.h>
+#include <linux/nsproxy.h>
+#include <linux/random.h>
+#include <linux/writeback.h>
+#include "aufs.h"
+
+union conv {
+#ifdef CONFIG_AUFS_INO_T_64
+	__u32 a[2];
+#else
+	__u32 a[1];
+#endif
+	ino_t ino;
+};
+
+static ino_t decode_ino(__u32 *a)
+{
+	union conv u;
+
+	BUILD_BUG_ON(sizeof(u.ino) != sizeof(u.a));
+	u.a[0] = a[0];
+#ifdef CONFIG_AUFS_INO_T_64
+	u.a[1] = a[1];
+#endif
+	return u.ino;
+}
+
+static void encode_ino(__u32 *a, ino_t ino)
+{
+	union conv u;
+
+	u.ino = ino;
+	a[0] = u.a[0];
+#ifdef CONFIG_AUFS_INO_T_64
+	a[1] = u.a[1];
+#endif
+}
+
+/* NFS file handle */
+enum {
+	Fh_br_id,
+	Fh_sigen,
+#ifdef CONFIG_AUFS_INO_T_64
+	/* support 64bit inode number */
+	Fh_ino1,
+	Fh_ino2,
+	Fh_dir_ino1,
+	Fh_dir_ino2,
+#else
+	Fh_ino1,
+	Fh_dir_ino1,
+#endif
+	Fh_igen,
+	Fh_h_type,
+	Fh_tail,
+
+	Fh_ino = Fh_ino1,
+	Fh_dir_ino = Fh_dir_ino1
+};
+
+static int au_test_anon(struct dentry *dentry)
+{
+	/* note: read d_flags without d_lock */
+	return !!(dentry->d_flags & DCACHE_DISCONNECTED);
+}
+
+int au_test_nfsd(void)
+{
+	int ret;
+	struct task_struct *tsk = current;
+	char comm[sizeof(tsk->comm)];
+
+	ret = 0;
+	if (tsk->flags & PF_KTHREAD) {
+		get_task_comm(comm, tsk);
+		ret = !strcmp(comm, "nfsd");
+	}
+
+	return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+/* inode generation external table */
+
+void au_xigen_inc(struct inode *inode)
+{
+	loff_t pos;
+	ssize_t sz;
+	__u32 igen;
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+
+	sb = inode->i_sb;
+	AuDebugOn(!au_opt_test(au_mntflags(sb), XINO));
+
+	sbinfo = au_sbi(sb);
+	pos = inode->i_ino;
+	pos *= sizeof(igen);
+	igen = inode->i_generation + 1;
+	sz = xino_fwrite(sbinfo->si_xigen, &igen, sizeof(igen), &pos);
+	if (sz == sizeof(igen))
+		return; /* success */
+
+	if (unlikely(sz >= 0))
+		AuIOErr("xigen error (%zd)\n", sz);
+}
+
+int au_xigen_new(struct inode *inode)
+{
+	int err;
+	loff_t pos;
+	ssize_t sz;
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+	struct file *file;
+
+	err = 0;
+	/* todo: dirty, at mount time */
+	if (inode->i_ino == AUFS_ROOT_INO)
+		goto out;
+	sb = inode->i_sb;
+	SiMustAnyLock(sb);
+	if (unlikely(!au_opt_test(au_mntflags(sb), XINO)))
+		goto out;
+
+	err = -EFBIG;
+	pos = inode->i_ino;
+	if (unlikely(au_loff_max / sizeof(inode->i_generation) - 1 < pos)) {
+		AuIOErr1("too large i%lld\n", pos);
+		goto out;
+	}
+	pos *= sizeof(inode->i_generation);
+
+	err = 0;
+	sbinfo = au_sbi(sb);
+	file = sbinfo->si_xigen;
+	BUG_ON(!file);
+
+	if (vfsub_f_size_read(file)
+	    < pos + sizeof(inode->i_generation)) {
+		inode->i_generation = atomic_inc_return(&sbinfo->si_xigen_next);
+		sz = xino_fwrite(file, &inode->i_generation,
+				 sizeof(inode->i_generation), &pos);
+	} else
+		sz = xino_fread(file, &inode->i_generation,
+				sizeof(inode->i_generation), &pos);
+	if (sz == sizeof(inode->i_generation))
+		goto out; /* success */
+
+	err = sz;
+	if (unlikely(sz >= 0)) {
+		err = -EIO;
+		AuIOErr("xigen error (%zd)\n", sz);
+	}
+
+out:
+	return err;
+}
+
+int au_xigen_set(struct super_block *sb, struct path *path)
+{
+	int err;
+	struct au_sbinfo *sbinfo;
+	struct file *file;
+
+	SiMustWriteLock(sb);
+
+	sbinfo = au_sbi(sb);
+	file = au_xino_create2(sb, path, sbinfo->si_xigen);
+	err = PTR_ERR(file);
+	if (IS_ERR(file))
+		goto out;
+	err = 0;
+	if (sbinfo->si_xigen)
+		fput(sbinfo->si_xigen);
+	sbinfo->si_xigen = file;
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+void au_xigen_clr(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+
+	SiMustWriteLock(sb);
+
+	sbinfo = au_sbi(sb);
+	if (sbinfo->si_xigen) {
+		fput(sbinfo->si_xigen);
+		sbinfo->si_xigen = NULL;
+	}
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *decode_by_ino(struct super_block *sb, ino_t ino,
+				    ino_t dir_ino)
+{
+	struct dentry *dentry, *d;
+	struct inode *inode;
+	unsigned int sigen;
+
+	dentry = NULL;
+	inode = ilookup(sb, ino);
+	if (!inode)
+		goto out;
+
+	dentry = ERR_PTR(-ESTALE);
+	sigen = au_sigen(sb);
+	if (unlikely(au_is_bad_inode(inode)
+		     || IS_DEADDIR(inode)
+		     || sigen != au_iigen(inode, NULL)))
+		goto out_iput;
+
+	dentry = NULL;
+	if (!dir_ino || S_ISDIR(inode->i_mode))
+		dentry = d_find_alias(inode);
+	else {
+		spin_lock(&inode->i_lock);
+		hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) {
+			spin_lock(&d->d_lock);
+			if (!au_test_anon(d)
+			    && d_inode(d->d_parent)->i_ino == dir_ino) {
+				dentry = dget_dlock(d);
+				spin_unlock(&d->d_lock);
+				break;
+			}
+			spin_unlock(&d->d_lock);
+		}
+		spin_unlock(&inode->i_lock);
+	}
+	if (unlikely(dentry && au_digen_test(dentry, sigen))) {
+		/* need to refresh */
+		dput(dentry);
+		dentry = NULL;
+	}
+
+out_iput:
+	iput(inode);
+out:
+	AuTraceErrPtr(dentry);
+	return dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* todo: dirty? */
+/* if exportfs_decode_fh() passed vfsmount*, we could be happy */
+
+struct au_compare_mnt_args {
+	/* input */
+	struct super_block *sb;
+
+	/* output */
+	struct vfsmount *mnt;
+};
+
+static int au_compare_mnt(struct vfsmount *mnt, void *arg)
+{
+	struct au_compare_mnt_args *a = arg;
+
+	if (mnt->mnt_sb != a->sb)
+		return 0;
+	a->mnt = mntget(mnt);
+	return 1;
+}
+
+static struct vfsmount *au_mnt_get(struct super_block *sb)
+{
+	int err;
+	struct path root;
+	struct au_compare_mnt_args args = {
+		.sb = sb
+	};
+
+	get_fs_root(current->fs, &root);
+	rcu_read_lock();
+	err = iterate_mounts(au_compare_mnt, &args, root.mnt);
+	rcu_read_unlock();
+	path_put(&root);
+	AuDebugOn(!err);
+	AuDebugOn(!args.mnt);
+	return args.mnt;
+}
+
+struct au_nfsd_si_lock {
+	unsigned int sigen;
+	aufs_bindex_t bindex, br_id;
+	unsigned char force_lock;
+};
+
+static int si_nfsd_read_lock(struct super_block *sb,
+			     struct au_nfsd_si_lock *nsi_lock)
+{
+	int err;
+	aufs_bindex_t bindex;
+
+	si_read_lock(sb, AuLock_FLUSH);
+
+	/* branch id may be wrapped around */
+	err = 0;
+	bindex = au_br_index(sb, nsi_lock->br_id);
+	if (bindex >= 0 && nsi_lock->sigen + AUFS_BRANCH_MAX > au_sigen(sb))
+		goto out; /* success */
+
+	err = -ESTALE;
+	bindex = -1;
+	if (!nsi_lock->force_lock)
+		si_read_unlock(sb);
+
+out:
+	nsi_lock->bindex = bindex;
+	return err;
+}
+
+struct find_name_by_ino {
+	struct dir_context ctx;
+	int called, found;
+	ino_t ino;
+	char *name;
+	int namelen;
+};
+
+static int
+find_name_by_ino(struct dir_context *ctx, const char *name, int namelen,
+		 loff_t offset, u64 ino, unsigned int d_type)
+{
+	struct find_name_by_ino *a = container_of(ctx, struct find_name_by_ino,
+						  ctx);
+
+	a->called++;
+	if (a->ino != ino)
+		return 0;
+
+	memcpy(a->name, name, namelen);
+	a->namelen = namelen;
+	a->found = 1;
+	return 1;
+}
+
+static struct dentry *au_lkup_by_ino(struct path *path, ino_t ino,
+				     struct au_nfsd_si_lock *nsi_lock)
+{
+	struct dentry *dentry, *parent;
+	struct file *file;
+	struct inode *dir;
+	struct find_name_by_ino arg = {
+		.ctx = {
+			.actor = find_name_by_ino
+		}
+	};
+	int err;
+
+	parent = path->dentry;
+	if (nsi_lock)
+		si_read_unlock(parent->d_sb);
+	file = vfsub_dentry_open(path, au_dir_roflags);
+	dentry = (void *)file;
+	if (IS_ERR(file))
+		goto out;
+
+	dentry = ERR_PTR(-ENOMEM);
+	arg.name = (void *)__get_free_page(GFP_NOFS);
+	if (unlikely(!arg.name))
+		goto out_file;
+	arg.ino = ino;
+	arg.found = 0;
+	do {
+		arg.called = 0;
+		/* smp_mb(); */
+		err = vfsub_iterate_dir(file, &arg.ctx);
+	} while (!err && !arg.found && arg.called);
+	dentry = ERR_PTR(err);
+	if (unlikely(err))
+		goto out_name;
+	/* instead of ENOENT */
+	dentry = ERR_PTR(-ESTALE);
+	if (!arg.found)
+		goto out_name;
+
+	/* do not call vfsub_lkup_one() */
+	dir = d_inode(parent);
+	dentry = vfsub_lookup_one_len_unlocked(arg.name, path, arg.namelen);
+	AuTraceErrPtr(dentry);
+	if (IS_ERR(dentry))
+		goto out_name;
+	AuDebugOn(au_test_anon(dentry));
+	if (unlikely(d_really_is_negative(dentry))) {
+		dput(dentry);
+		dentry = ERR_PTR(-ENOENT);
+	}
+
+out_name:
+	free_page((unsigned long)arg.name);
+out_file:
+	fput(file);
+out:
+	if (unlikely(nsi_lock
+		     && si_nfsd_read_lock(parent->d_sb, nsi_lock) < 0))
+		if (!IS_ERR(dentry)) {
+			dput(dentry);
+			dentry = ERR_PTR(-ESTALE);
+		}
+	AuTraceErrPtr(dentry);
+	return dentry;
+}
+
+static struct dentry *decode_by_dir_ino(struct super_block *sb, ino_t ino,
+					ino_t dir_ino,
+					struct au_nfsd_si_lock *nsi_lock)
+{
+	struct dentry *dentry;
+	struct path path;
+
+	if (dir_ino != AUFS_ROOT_INO) {
+		path.dentry = decode_by_ino(sb, dir_ino, 0);
+		dentry = path.dentry;
+		if (!path.dentry || IS_ERR(path.dentry))
+			goto out;
+		AuDebugOn(au_test_anon(path.dentry));
+	} else
+		path.dentry = dget(sb->s_root);
+
+	path.mnt = au_mnt_get(sb);
+	dentry = au_lkup_by_ino(&path, ino, nsi_lock);
+	path_put(&path);
+
+out:
+	AuTraceErrPtr(dentry);
+	return dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int h_acceptable(void *expv, struct dentry *dentry)
+{
+	return 1;
+}
+
+static char *au_build_path(struct dentry *h_parent, struct path *h_rootpath,
+			   char *buf, int len, struct super_block *sb)
+{
+	char *p;
+	int n;
+	struct path path;
+
+	p = d_path(h_rootpath, buf, len);
+	if (IS_ERR(p))
+		goto out;
+	n = strlen(p);
+
+	path.mnt = h_rootpath->mnt;
+	path.dentry = h_parent;
+	p = d_path(&path, buf, len);
+	if (IS_ERR(p))
+		goto out;
+	if (n != 1)
+		p += n;
+
+	path.mnt = au_mnt_get(sb);
+	path.dentry = sb->s_root;
+	p = d_path(&path, buf, len - strlen(p));
+	mntput(path.mnt);
+	if (IS_ERR(p))
+		goto out;
+	if (n != 1)
+		p[strlen(p)] = '/';
+
+out:
+	AuTraceErrPtr(p);
+	return p;
+}
+
+static
+struct dentry *decode_by_path(struct super_block *sb, ino_t ino, __u32 *fh,
+			      int fh_len, struct au_nfsd_si_lock *nsi_lock)
+{
+	struct dentry *dentry, *h_parent, *root;
+	struct super_block *h_sb;
+	char *pathname, *p;
+	struct vfsmount *h_mnt;
+	struct au_branch *br;
+	int err;
+	struct path path;
+
+	br = au_sbr(sb, nsi_lock->bindex);
+	h_mnt = au_br_mnt(br);
+	h_sb = h_mnt->mnt_sb;
+	/* todo: call lower fh_to_dentry()? fh_to_parent()? */
+	lockdep_off();
+	h_parent = exportfs_decode_fh(h_mnt, (void *)(fh + Fh_tail),
+				      fh_len - Fh_tail, fh[Fh_h_type],
+				      h_acceptable, /*context*/NULL);
+	lockdep_on();
+	dentry = h_parent;
+	if (unlikely(!h_parent || IS_ERR(h_parent))) {
+		AuWarn1("%s decode_fh failed, %ld\n",
+			au_sbtype(h_sb), PTR_ERR(h_parent));
+		goto out;
+	}
+	dentry = NULL;
+	if (unlikely(au_test_anon(h_parent))) {
+		AuWarn1("%s decode_fh returned a disconnected dentry\n",
+			au_sbtype(h_sb));
+		goto out_h_parent;
+	}
+
+	dentry = ERR_PTR(-ENOMEM);
+	pathname = (void *)__get_free_page(GFP_NOFS);
+	if (unlikely(!pathname))
+		goto out_h_parent;
+
+	root = sb->s_root;
+	path.mnt = h_mnt;
+	di_read_lock_parent(root, !AuLock_IR);
+	path.dentry = au_h_dptr(root, nsi_lock->bindex);
+	di_read_unlock(root, !AuLock_IR);
+	p = au_build_path(h_parent, &path, pathname, PAGE_SIZE, sb);
+	dentry = (void *)p;
+	if (IS_ERR(p))
+		goto out_pathname;
+
+	si_read_unlock(sb);
+	err = vfsub_kern_path(p, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &path);
+	dentry = ERR_PTR(err);
+	if (unlikely(err))
+		goto out_relock;
+
+	dentry = ERR_PTR(-ENOENT);
+	AuDebugOn(au_test_anon(path.dentry));
+	if (unlikely(d_really_is_negative(path.dentry)))
+		goto out_path;
+
+	if (ino != d_inode(path.dentry)->i_ino)
+		dentry = au_lkup_by_ino(&path, ino, /*nsi_lock*/NULL);
+	else
+		dentry = dget(path.dentry);
+
+out_path:
+	path_put(&path);
+out_relock:
+	if (unlikely(si_nfsd_read_lock(sb, nsi_lock) < 0))
+		if (!IS_ERR(dentry)) {
+			dput(dentry);
+			dentry = ERR_PTR(-ESTALE);
+		}
+out_pathname:
+	free_page((unsigned long)pathname);
+out_h_parent:
+	dput(h_parent);
+out:
+	AuTraceErrPtr(dentry);
+	return dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *
+aufs_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len,
+		  int fh_type)
+{
+	struct dentry *dentry;
+	__u32 *fh = fid->raw;
+	struct au_branch *br;
+	ino_t ino, dir_ino;
+	struct au_nfsd_si_lock nsi_lock = {
+		.force_lock	= 0
+	};
+
+	dentry = ERR_PTR(-ESTALE);
+	/* it should never happen, but the file handle is unreliable */
+	if (unlikely(fh_len < Fh_tail))
+		goto out;
+	nsi_lock.sigen = fh[Fh_sigen];
+	nsi_lock.br_id = fh[Fh_br_id];
+
+	/* branch id may be wrapped around */
+	br = NULL;
+	if (unlikely(si_nfsd_read_lock(sb, &nsi_lock)))
+		goto out;
+	nsi_lock.force_lock = 1;
+
+	/* is this inode still cached? */
+	ino = decode_ino(fh + Fh_ino);
+	/* it should never happen */
+	if (unlikely(ino == AUFS_ROOT_INO))
+		goto out_unlock;
+
+	dir_ino = decode_ino(fh + Fh_dir_ino);
+	dentry = decode_by_ino(sb, ino, dir_ino);
+	if (IS_ERR(dentry))
+		goto out_unlock;
+	if (dentry)
+		goto accept;
+
+	/* is the parent dir cached? */
+	br = au_sbr(sb, nsi_lock.bindex);
+	au_lcnt_inc(&br->br_nfiles);
+	dentry = decode_by_dir_ino(sb, ino, dir_ino, &nsi_lock);
+	if (IS_ERR(dentry))
+		goto out_unlock;
+	if (dentry)
+		goto accept;
+
+	/* lookup path */
+	dentry = decode_by_path(sb, ino, fh, fh_len, &nsi_lock);
+	if (IS_ERR(dentry))
+		goto out_unlock;
+	if (unlikely(!dentry))
+		/* todo?: make it ESTALE */
+		goto out_unlock;
+
+accept:
+	if (!au_digen_test(dentry, au_sigen(sb))
+	    && d_inode(dentry)->i_generation == fh[Fh_igen])
+		goto out_unlock; /* success */
+
+	dput(dentry);
+	dentry = ERR_PTR(-ESTALE);
+out_unlock:
+	if (br)
+		au_lcnt_dec(&br->br_nfiles);
+	si_read_unlock(sb);
+out:
+	AuTraceErrPtr(dentry);
+	return dentry;
+}
+
+#if 0 /* reserved for future use */
+/* support subtreecheck option */
+static struct dentry *aufs_fh_to_parent(struct super_block *sb, struct fid *fid,
+					int fh_len, int fh_type)
+{
+	struct dentry *parent;
+	__u32 *fh = fid->raw;
+	ino_t dir_ino;
+
+	dir_ino = decode_ino(fh + Fh_dir_ino);
+	parent = decode_by_ino(sb, dir_ino, 0);
+	if (IS_ERR(parent))
+		goto out;
+	if (!parent)
+		parent = decode_by_path(sb, au_br_index(sb, fh[Fh_br_id]),
+					dir_ino, fh, fh_len);
+
+out:
+	AuTraceErrPtr(parent);
+	return parent;
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_encode_fh(struct inode *inode, __u32 *fh, int *max_len,
+			  struct inode *dir)
+{
+	int err;
+	aufs_bindex_t bindex;
+	struct super_block *sb, *h_sb;
+	struct dentry *dentry, *parent, *h_parent;
+	struct inode *h_dir;
+	struct au_branch *br;
+
+	err = -ENOSPC;
+	if (unlikely(*max_len <= Fh_tail)) {
+		AuWarn1("NFSv2 client (max_len %d)?\n", *max_len);
+		goto out;
+	}
+
+	err = FILEID_ROOT;
+	if (inode->i_ino == AUFS_ROOT_INO) {
+		AuDebugOn(inode->i_ino != AUFS_ROOT_INO);
+		goto out;
+	}
+
+	h_parent = NULL;
+	sb = inode->i_sb;
+	err = si_read_lock(sb, AuLock_FLUSH);
+	if (unlikely(err))
+		goto out;
+
+#ifdef CONFIG_AUFS_DEBUG
+	if (unlikely(!au_opt_test(au_mntflags(sb), XINO)))
+		AuWarn1("NFS-exporting requires xino\n");
+#endif
+	err = -EIO;
+	parent = NULL;
+	ii_read_lock_child(inode);
+	bindex = au_ibtop(inode);
+	if (!dir) {
+		dentry = d_find_any_alias(inode);
+		if (unlikely(!dentry))
+			goto out_unlock;
+		AuDebugOn(au_test_anon(dentry));
+		parent = dget_parent(dentry);
+		dput(dentry);
+		if (unlikely(!parent))
+			goto out_unlock;
+		if (d_really_is_positive(parent))
+			dir = d_inode(parent);
+	}
+
+	ii_read_lock_parent(dir);
+	h_dir = au_h_iptr(dir, bindex);
+	ii_read_unlock(dir);
+	if (unlikely(!h_dir))
+		goto out_parent;
+	h_parent = d_find_any_alias(h_dir);
+	if (unlikely(!h_parent))
+		goto out_hparent;
+
+	err = -EPERM;
+	br = au_sbr(sb, bindex);
+	h_sb = au_br_sb(br);
+	if (unlikely(!h_sb->s_export_op)) {
+		AuErr1("%s branch is not exportable\n", au_sbtype(h_sb));
+		goto out_hparent;
+	}
+
+	fh[Fh_br_id] = br->br_id;
+	fh[Fh_sigen] = au_sigen(sb);
+	encode_ino(fh + Fh_ino, inode->i_ino);
+	encode_ino(fh + Fh_dir_ino, dir->i_ino);
+	fh[Fh_igen] = inode->i_generation;
+
+	*max_len -= Fh_tail;
+	fh[Fh_h_type] = exportfs_encode_fh(h_parent, (void *)(fh + Fh_tail),
+					   max_len,
+					   /*connectable or subtreecheck*/0);
+	err = fh[Fh_h_type];
+	*max_len += Fh_tail;
+	/* todo: macros? */
+	if (err != FILEID_INVALID)
+		err = 99;
+	else
+		AuWarn1("%s encode_fh failed\n", au_sbtype(h_sb));
+
+out_hparent:
+	dput(h_parent);
+out_parent:
+	dput(parent);
+out_unlock:
+	ii_read_unlock(inode);
+	si_read_unlock(sb);
+out:
+	if (unlikely(err < 0))
+		err = FILEID_INVALID;
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_commit_metadata(struct inode *inode)
+{
+	int err;
+	aufs_bindex_t bindex;
+	struct super_block *sb;
+	struct inode *h_inode;
+	int (*f)(struct inode *inode);
+
+	sb = inode->i_sb;
+	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+	ii_write_lock_child(inode);
+	bindex = au_ibtop(inode);
+	AuDebugOn(bindex < 0);
+	h_inode = au_h_iptr(inode, bindex);
+
+	f = h_inode->i_sb->s_export_op->commit_metadata;
+	if (f)
+		err = f(h_inode);
+	else
+		err = sync_inode_metadata(h_inode, /*wait*/1);
+
+	au_cpup_attr_timesizes(inode);
+	ii_write_unlock(inode);
+	si_read_unlock(sb);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct export_operations aufs_export_op = {
+	.fh_to_dentry		= aufs_fh_to_dentry,
+	/* .fh_to_parent	= aufs_fh_to_parent, */
+	.encode_fh		= aufs_encode_fh,
+	.commit_metadata	= aufs_commit_metadata
+};
+
+void au_export_init(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+	__u32 u;
+
+	BUILD_BUG_ON_MSG(IS_BUILTIN(CONFIG_AUFS_FS)
+			 && IS_MODULE(CONFIG_EXPORTFS),
+			 AUFS_NAME ": unsupported configuration "
+			 "CONFIG_EXPORTFS=m and CONFIG_AUFS_FS=y");
+
+	sb->s_export_op = &aufs_export_op;
+	sbinfo = au_sbi(sb);
+	sbinfo->si_xigen = NULL;
+	get_random_bytes(&u, sizeof(u));
+	BUILD_BUG_ON(sizeof(u) != sizeof(int));
+	atomic_set(&sbinfo->si_xigen_next, u);
+}
diff -Naur --no-dereference a/fs/aufs/fhsm.c b/fs/aufs/fhsm.c
--- a/fs/aufs/fhsm.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/fhsm.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,427 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2011-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ * File-based Hierarchy Storage Management
+ */
+
+#include <linux/anon_inodes.h>
+#include <linux/poll.h>
+#include <linux/seq_file.h>
+#include <linux/statfs.h>
+#include "aufs.h"
+
+static aufs_bindex_t au_fhsm_bottom(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+
+	SiMustAnyLock(sb);
+
+	sbinfo = au_sbi(sb);
+	fhsm = &sbinfo->si_fhsm;
+	AuDebugOn(!fhsm);
+	return fhsm->fhsm_bottom;
+}
+
+void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex)
+{
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+
+	SiMustWriteLock(sb);
+
+	sbinfo = au_sbi(sb);
+	fhsm = &sbinfo->si_fhsm;
+	AuDebugOn(!fhsm);
+	fhsm->fhsm_bottom = bindex;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_fhsm_test_jiffy(struct au_sbinfo *sbinfo, struct au_branch *br)
+{
+	struct au_br_fhsm *bf;
+
+	bf = br->br_fhsm;
+	MtxMustLock(&bf->bf_lock);
+
+	return !bf->bf_readable
+		|| time_after(jiffies,
+			      bf->bf_jiffy + sbinfo->si_fhsm.fhsm_expire);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_fhsm_notify(struct super_block *sb, int val)
+{
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+
+	SiMustAnyLock(sb);
+
+	sbinfo = au_sbi(sb);
+	fhsm = &sbinfo->si_fhsm;
+	if (au_fhsm_pid(fhsm)
+	    && atomic_read(&fhsm->fhsm_readable) != -1) {
+		atomic_set(&fhsm->fhsm_readable, val);
+		if (val)
+			wake_up(&fhsm->fhsm_wqh);
+	}
+}
+
+static int au_fhsm_stfs(struct super_block *sb, aufs_bindex_t bindex,
+			struct aufs_stfs *rstfs, int do_lock, int do_notify)
+{
+	int err;
+	struct au_branch *br;
+	struct au_br_fhsm *bf;
+
+	br = au_sbr(sb, bindex);
+	AuDebugOn(au_br_rdonly(br));
+	bf = br->br_fhsm;
+	AuDebugOn(!bf);
+
+	if (do_lock)
+		mutex_lock(&bf->bf_lock);
+	else
+		MtxMustLock(&bf->bf_lock);
+
+	/* sb->s_root for NFS is unreliable */
+	err = au_br_stfs(br, &bf->bf_stfs);
+	if (unlikely(err)) {
+		AuErr1("FHSM failed (%d), b%d, ignored.\n", bindex, err);
+		goto out;
+	}
+
+	bf->bf_jiffy = jiffies;
+	bf->bf_readable = 1;
+	if (do_notify)
+		au_fhsm_notify(sb, /*val*/1);
+	if (rstfs)
+		*rstfs = bf->bf_stfs;
+
+out:
+	if (do_lock)
+		mutex_unlock(&bf->bf_lock);
+	au_fhsm_notify(sb, /*val*/1);
+
+	return err;
+}
+
+void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force)
+{
+	int err;
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+	struct au_branch *br;
+	struct au_br_fhsm *bf;
+
+	AuDbg("b%d, force %d\n", bindex, force);
+	SiMustAnyLock(sb);
+
+	sbinfo = au_sbi(sb);
+	fhsm = &sbinfo->si_fhsm;
+	if (!au_ftest_si(sbinfo, FHSM)
+	    || fhsm->fhsm_bottom == bindex)
+		return;
+
+	br = au_sbr(sb, bindex);
+	bf = br->br_fhsm;
+	AuDebugOn(!bf);
+	mutex_lock(&bf->bf_lock);
+	if (force
+	    || au_fhsm_pid(fhsm)
+	    || au_fhsm_test_jiffy(sbinfo, br))
+		err = au_fhsm_stfs(sb, bindex, /*rstfs*/NULL, /*do_lock*/0,
+				  /*do_notify*/1);
+	mutex_unlock(&bf->bf_lock);
+}
+
+void au_fhsm_wrote_all(struct super_block *sb, int force)
+{
+	aufs_bindex_t bindex, bbot;
+	struct au_branch *br;
+
+	/* exclude the bottom */
+	bbot = au_fhsm_bottom(sb);
+	for (bindex = 0; bindex < bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		if (au_br_fhsm(br->br_perm))
+			au_fhsm_wrote(sb, bindex, force);
+	}
+}
+
+/* ---------------------------------------------------------------------- */
+
+static __poll_t au_fhsm_poll(struct file *file, struct poll_table_struct *wait)
+{
+	__poll_t mask;
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+
+	mask = 0;
+	sbinfo = file->private_data;
+	fhsm = &sbinfo->si_fhsm;
+	poll_wait(file, &fhsm->fhsm_wqh, wait);
+	if (atomic_read(&fhsm->fhsm_readable))
+		mask = EPOLLIN /* | EPOLLRDNORM */;
+
+	if (!mask)
+		AuDbg("mask 0x%x\n", mask);
+	return mask;
+}
+
+static int au_fhsm_do_read_one(struct aufs_stbr __user *stbr,
+			      struct aufs_stfs *stfs, __s16 brid)
+{
+	int err;
+
+	err = copy_to_user(&stbr->stfs, stfs, sizeof(*stfs));
+	if (!err)
+		err = __put_user(brid, &stbr->brid);
+	if (unlikely(err))
+		err = -EFAULT;
+
+	return err;
+}
+
+static ssize_t au_fhsm_do_read(struct super_block *sb,
+			       struct aufs_stbr __user *stbr, size_t count)
+{
+	ssize_t err;
+	int nstbr;
+	aufs_bindex_t bindex, bbot;
+	struct au_branch *br;
+	struct au_br_fhsm *bf;
+
+	/* except the bottom branch */
+	err = 0;
+	nstbr = 0;
+	bbot = au_fhsm_bottom(sb);
+	for (bindex = 0; !err && bindex < bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		if (!au_br_fhsm(br->br_perm))
+			continue;
+
+		bf = br->br_fhsm;
+		mutex_lock(&bf->bf_lock);
+		if (bf->bf_readable) {
+			err = -EFAULT;
+			if (count >= sizeof(*stbr))
+				err = au_fhsm_do_read_one(stbr++, &bf->bf_stfs,
+							  br->br_id);
+			if (!err) {
+				bf->bf_readable = 0;
+				count -= sizeof(*stbr);
+				nstbr++;
+			}
+		}
+		mutex_unlock(&bf->bf_lock);
+	}
+	if (!err)
+		err = sizeof(*stbr) * nstbr;
+
+	return err;
+}
+
+static ssize_t au_fhsm_read(struct file *file, char __user *buf, size_t count,
+			   loff_t *pos)
+{
+	ssize_t err;
+	int readable;
+	aufs_bindex_t nfhsm, bindex, bbot;
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+	struct au_branch *br;
+	struct super_block *sb;
+
+	err = 0;
+	sbinfo = file->private_data;
+	fhsm = &sbinfo->si_fhsm;
+need_data:
+	spin_lock_irq(&fhsm->fhsm_wqh.lock);
+	if (!atomic_read(&fhsm->fhsm_readable)) {
+		if (vfsub_file_flags(file) & O_NONBLOCK)
+			err = -EAGAIN;
+		else
+			err = wait_event_interruptible_locked_irq
+				(fhsm->fhsm_wqh,
+				 atomic_read(&fhsm->fhsm_readable));
+	}
+	spin_unlock_irq(&fhsm->fhsm_wqh.lock);
+	if (unlikely(err))
+		goto out;
+
+	/* sb may already be dead */
+	au_rw_read_lock(&sbinfo->si_rwsem);
+	readable = atomic_read(&fhsm->fhsm_readable);
+	if (readable > 0) {
+		sb = sbinfo->si_sb;
+		AuDebugOn(!sb);
+		/* exclude the bottom branch */
+		nfhsm = 0;
+		bbot = au_fhsm_bottom(sb);
+		for (bindex = 0; bindex < bbot; bindex++) {
+			br = au_sbr(sb, bindex);
+			if (au_br_fhsm(br->br_perm))
+				nfhsm++;
+		}
+		err = -EMSGSIZE;
+		if (nfhsm * sizeof(struct aufs_stbr) <= count) {
+			atomic_set(&fhsm->fhsm_readable, 0);
+			err = au_fhsm_do_read(sbinfo->si_sb, (void __user *)buf,
+					     count);
+		}
+	}
+	au_rw_read_unlock(&sbinfo->si_rwsem);
+	if (!readable)
+		goto need_data;
+
+out:
+	return err;
+}
+
+static int au_fhsm_release(struct inode *inode, struct file *file)
+{
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+
+	/* sb may already be dead */
+	sbinfo = file->private_data;
+	fhsm = &sbinfo->si_fhsm;
+	spin_lock(&fhsm->fhsm_spin);
+	fhsm->fhsm_pid = 0;
+	spin_unlock(&fhsm->fhsm_spin);
+	kobject_put(&sbinfo->si_kobj);
+
+	return 0;
+}
+
+static const struct file_operations au_fhsm_fops = {
+	.owner		= THIS_MODULE,
+	.llseek		= noop_llseek,
+	.read		= au_fhsm_read,
+	.poll		= au_fhsm_poll,
+	.release	= au_fhsm_release
+};
+
+int au_fhsm_fd(struct super_block *sb, int oflags)
+{
+	int err, fd;
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+
+	err = -EPERM;
+	if (unlikely(!capable(CAP_SYS_ADMIN)))
+		goto out;
+
+	err = -EINVAL;
+	if (unlikely(oflags & ~(O_CLOEXEC | O_NONBLOCK)))
+		goto out;
+
+	err = 0;
+	sbinfo = au_sbi(sb);
+	fhsm = &sbinfo->si_fhsm;
+	spin_lock(&fhsm->fhsm_spin);
+	if (!fhsm->fhsm_pid)
+		fhsm->fhsm_pid = current->pid;
+	else
+		err = -EBUSY;
+	spin_unlock(&fhsm->fhsm_spin);
+	if (unlikely(err))
+		goto out;
+
+	oflags |= O_RDONLY;
+	/* oflags |= FMODE_NONOTIFY; */
+	fd = anon_inode_getfd("[aufs_fhsm]", &au_fhsm_fops, sbinfo, oflags);
+	err = fd;
+	if (unlikely(fd < 0))
+		goto out_pid;
+
+	/* succeed regardless 'fhsm' status */
+	kobject_get(&sbinfo->si_kobj);
+	si_noflush_read_lock(sb);
+	if (au_ftest_si(sbinfo, FHSM))
+		au_fhsm_wrote_all(sb, /*force*/0);
+	si_read_unlock(sb);
+	goto out; /* success */
+
+out_pid:
+	spin_lock(&fhsm->fhsm_spin);
+	fhsm->fhsm_pid = 0;
+	spin_unlock(&fhsm->fhsm_spin);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_fhsm_br_alloc(struct au_branch *br)
+{
+	int err;
+
+	err = 0;
+	br->br_fhsm = kmalloc(sizeof(*br->br_fhsm), GFP_NOFS);
+	if (br->br_fhsm)
+		au_br_fhsm_init(br->br_fhsm);
+	else
+		err = -ENOMEM;
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_fhsm_fin(struct super_block *sb)
+{
+	au_fhsm_notify(sb, /*val*/-1);
+}
+
+void au_fhsm_init(struct au_sbinfo *sbinfo)
+{
+	struct au_fhsm *fhsm;
+
+	fhsm = &sbinfo->si_fhsm;
+	spin_lock_init(&fhsm->fhsm_spin);
+	init_waitqueue_head(&fhsm->fhsm_wqh);
+	atomic_set(&fhsm->fhsm_readable, 0);
+	fhsm->fhsm_expire
+		= msecs_to_jiffies(AUFS_FHSM_CACHE_DEF_SEC * MSEC_PER_SEC);
+	fhsm->fhsm_bottom = -1;
+}
+
+void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec)
+{
+	sbinfo->si_fhsm.fhsm_expire
+		= msecs_to_jiffies(sec * MSEC_PER_SEC);
+}
+
+void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo)
+{
+	unsigned int u;
+
+	if (!au_ftest_si(sbinfo, FHSM))
+		return;
+
+	u = jiffies_to_msecs(sbinfo->si_fhsm.fhsm_expire) / MSEC_PER_SEC;
+	if (u != AUFS_FHSM_CACHE_DEF_SEC)
+		seq_printf(seq, ",fhsm_sec=%u", u);
+}
diff -Naur --no-dereference a/fs/aufs/file.c b/fs/aufs/file.c
--- a/fs/aufs/file.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/file.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,863 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * handling file/dir, and address_space operation
+ */
+
+#ifdef CONFIG_AUFS_DEBUG
+#include <linux/migrate.h>
+#endif
+#include <linux/pagemap.h>
+#include "aufs.h"
+
+/* drop flags for writing */
+unsigned int au_file_roflags(unsigned int flags)
+{
+	flags &= ~(O_WRONLY | O_RDWR | O_APPEND | O_CREAT | O_TRUNC);
+	flags |= O_RDONLY | O_NOATIME;
+	return flags;
+}
+
+/* common functions to regular file and dir */
+struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags,
+		       struct file *file, int force_wr)
+{
+	struct file *h_file;
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct path h_path;
+	int err;
+
+	/* a race condition can happen between open and unlink/rmdir */
+	h_file = ERR_PTR(-ENOENT);
+	h_dentry = au_h_dptr(dentry, bindex);
+	if (au_test_nfsd() && (!h_dentry || d_is_negative(h_dentry)))
+		goto out;
+	h_inode = d_inode(h_dentry);
+	spin_lock(&h_dentry->d_lock);
+	err = (!d_unhashed(dentry) && d_unlinked(h_dentry))
+		/* || !d_inode(dentry)->i_nlink */
+		;
+	spin_unlock(&h_dentry->d_lock);
+	if (unlikely(err))
+		goto out;
+
+	sb = dentry->d_sb;
+	br = au_sbr(sb, bindex);
+	err = au_br_test_oflag(flags, br);
+	h_file = ERR_PTR(err);
+	if (unlikely(err))
+		goto out;
+
+	/* drop flags for writing */
+	if (au_test_ro(sb, bindex, d_inode(dentry))) {
+		if (force_wr && !(flags & O_WRONLY))
+			force_wr = 0;
+		flags = au_file_roflags(flags);
+		if (force_wr) {
+			h_file = ERR_PTR(-EROFS);
+			flags = au_file_roflags(flags);
+			if (unlikely(vfsub_native_ro(h_inode)
+				     || IS_APPEND(h_inode)))
+				goto out;
+			flags &= ~O_ACCMODE;
+			flags |= O_WRONLY;
+		}
+	}
+	flags &= ~O_CREAT;
+	au_lcnt_inc(&br->br_nfiles);
+	h_path.dentry = h_dentry;
+	h_path.mnt = au_br_mnt(br);
+	h_file = vfsub_dentry_open(&h_path, flags);
+	if (IS_ERR(h_file))
+		goto out_br;
+
+	if (flags & __FMODE_EXEC) {
+		err = deny_write_access(h_file);
+		if (unlikely(err)) {
+			fput(h_file);
+			h_file = ERR_PTR(err);
+			goto out_br;
+		}
+	}
+	fsnotify_open(h_file);
+	goto out; /* success */
+
+out_br:
+	au_lcnt_dec(&br->br_nfiles);
+out:
+	return h_file;
+}
+
+static int au_cmoo(struct dentry *dentry)
+{
+	int err, cmoo, matched;
+	unsigned int udba;
+	struct path h_path;
+	struct au_pin pin;
+	struct au_cp_generic cpg = {
+		.dentry	= dentry,
+		.bdst	= -1,
+		.bsrc	= -1,
+		.len	= -1,
+		.pin	= &pin,
+		.flags	= AuCpup_DTIME | AuCpup_HOPEN
+	};
+	struct inode *delegated;
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+	struct au_fhsm *fhsm;
+	pid_t pid;
+	struct au_branch *br;
+	struct dentry *parent;
+	struct au_hinode *hdir;
+
+	DiMustWriteLock(dentry);
+	IiMustWriteLock(d_inode(dentry));
+
+	err = 0;
+	if (IS_ROOT(dentry))
+		goto out;
+	cpg.bsrc = au_dbtop(dentry);
+	if (!cpg.bsrc)
+		goto out;
+
+	sb = dentry->d_sb;
+	sbinfo = au_sbi(sb);
+	fhsm = &sbinfo->si_fhsm;
+	pid = au_fhsm_pid(fhsm);
+	rcu_read_lock();
+	matched = (pid
+		   && (current->pid == pid
+		       || rcu_dereference(current->real_parent)->pid == pid));
+	rcu_read_unlock();
+	if (matched)
+		goto out;
+
+	br = au_sbr(sb, cpg.bsrc);
+	cmoo = au_br_cmoo(br->br_perm);
+	if (!cmoo)
+		goto out;
+	if (!d_is_reg(dentry))
+		cmoo &= AuBrAttr_COO_ALL;
+	if (!cmoo)
+		goto out;
+
+	parent = dget_parent(dentry);
+	di_write_lock_parent(parent);
+	err = au_wbr_do_copyup_bu(dentry, cpg.bsrc - 1);
+	cpg.bdst = err;
+	if (unlikely(err < 0)) {
+		err = 0;	/* there is no upper writable branch */
+		goto out_dgrade;
+	}
+	AuDbg("bsrc %d, bdst %d\n", cpg.bsrc, cpg.bdst);
+
+	/* do not respect the coo attrib for the target branch */
+	err = au_cpup_dirs(dentry, cpg.bdst);
+	if (unlikely(err))
+		goto out_dgrade;
+
+	di_downgrade_lock(parent, AuLock_IR);
+	udba = au_opt_udba(sb);
+	err = au_pin(&pin, dentry, cpg.bdst, udba,
+		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+	if (unlikely(err))
+		goto out_parent;
+
+	err = au_sio_cpup_simple(&cpg);
+	au_unpin(&pin);
+	if (unlikely(err))
+		goto out_parent;
+	if (!(cmoo & AuBrWAttr_MOO))
+		goto out_parent; /* success */
+
+	err = au_pin(&pin, dentry, cpg.bsrc, udba,
+		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+	if (unlikely(err))
+		goto out_parent;
+
+	h_path.mnt = au_br_mnt(br);
+	h_path.dentry = au_h_dptr(dentry, cpg.bsrc);
+	hdir = au_hi(d_inode(parent), cpg.bsrc);
+	delegated = NULL;
+	err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated, /*force*/1);
+	au_unpin(&pin);
+	/* todo: keep h_dentry or not? */
+	if (unlikely(err == -EWOULDBLOCK)) {
+		pr_warn("cannot retry for NFSv4 delegation"
+			" for an internal unlink\n");
+		iput(delegated);
+	}
+	if (unlikely(err)) {
+		pr_err("unlink %pd after coo failed (%d), ignored\n",
+		       dentry, err);
+		err = 0;
+	}
+	goto out_parent; /* success */
+
+out_dgrade:
+	di_downgrade_lock(parent, AuLock_IR);
+out_parent:
+	di_read_unlock(parent, AuLock_IR);
+	dput(parent);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int au_do_open(struct file *file, struct au_do_open_args *args)
+{
+	int err, aopen = args->aopen;
+	struct dentry *dentry;
+	struct au_finfo *finfo;
+
+	if (!aopen)
+		err = au_finfo_init(file, args->fidir);
+	else {
+		lockdep_off();
+		err = au_finfo_init(file, args->fidir);
+		lockdep_on();
+	}
+	if (unlikely(err))
+		goto out;
+
+	dentry = file->f_path.dentry;
+	AuDebugOn(IS_ERR_OR_NULL(dentry));
+	di_write_lock_child(dentry);
+	err = au_cmoo(dentry);
+	di_downgrade_lock(dentry, AuLock_IR);
+	if (!err) {
+		if (!aopen)
+			err = args->open(file, vfsub_file_flags(file), NULL);
+		else {
+			lockdep_off();
+			err = args->open(file, vfsub_file_flags(file),
+					 args->h_file);
+			lockdep_on();
+		}
+	}
+	di_read_unlock(dentry, AuLock_IR);
+
+	finfo = au_fi(file);
+	if (!err) {
+		finfo->fi_file = file;
+		au_hbl_add(&finfo->fi_hlist,
+			   &au_sbi(file->f_path.dentry->d_sb)->si_files);
+	}
+	if (!aopen)
+		fi_write_unlock(file);
+	else {
+		lockdep_off();
+		fi_write_unlock(file);
+		lockdep_on();
+	}
+	if (unlikely(err)) {
+		finfo->fi_hdir = NULL;
+		au_finfo_fin(file);
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int au_reopen_nondir(struct file *file)
+{
+	int err;
+	aufs_bindex_t btop;
+	struct dentry *dentry;
+	struct au_branch *br;
+	struct file *h_file, *h_file_tmp;
+
+	dentry = file->f_path.dentry;
+	btop = au_dbtop(dentry);
+	br = au_sbr(dentry->d_sb, btop);
+	h_file_tmp = NULL;
+	if (au_fbtop(file) == btop) {
+		h_file = au_hf_top(file);
+		if (file->f_mode == h_file->f_mode)
+			return 0; /* success */
+		h_file_tmp = h_file;
+		get_file(h_file_tmp);
+		au_lcnt_inc(&br->br_nfiles);
+		au_set_h_fptr(file, btop, NULL);
+	}
+	AuDebugOn(au_fi(file)->fi_hdir);
+	/*
+	 * it can happen
+	 * file exists on both of rw and ro
+	 * open --> dbtop and fbtop are both 0
+	 * prepend a branch as rw, "rw" become ro
+	 * remove rw/file
+	 * delete the top branch, "rw" becomes rw again
+	 *	--> dbtop is 1, fbtop is still 0
+	 * write --> fbtop is 0 but dbtop is 1
+	 */
+	/* AuDebugOn(au_fbtop(file) < btop); */
+
+	h_file = au_h_open(dentry, btop, vfsub_file_flags(file) & ~O_TRUNC,
+			   file, /*force_wr*/0);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file)) {
+		if (h_file_tmp) {
+			/* revert */
+			au_set_h_fptr(file, btop, h_file_tmp);
+			h_file_tmp = NULL;
+		}
+		goto out; /* todo: close all? */
+	}
+
+	err = 0;
+	au_set_fbtop(file, btop);
+	au_set_h_fptr(file, btop, h_file);
+	au_update_figen(file);
+	/* todo: necessary? */
+	/* file->f_ra = h_file->f_ra; */
+
+out:
+	if (h_file_tmp) {
+		fput(h_file_tmp);
+		au_lcnt_dec(&br->br_nfiles);
+	}
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_reopen_wh(struct file *file, aufs_bindex_t btgt,
+			struct dentry *hi_wh)
+{
+	int err;
+	aufs_bindex_t btop;
+	struct au_dinfo *dinfo;
+	struct dentry *h_dentry;
+	struct au_hdentry *hdp;
+
+	dinfo = au_di(file->f_path.dentry);
+	AuRwMustWriteLock(&dinfo->di_rwsem);
+
+	btop = dinfo->di_btop;
+	dinfo->di_btop = btgt;
+	hdp = au_hdentry(dinfo, btgt);
+	h_dentry = hdp->hd_dentry;
+	hdp->hd_dentry = hi_wh;
+	err = au_reopen_nondir(file);
+	hdp->hd_dentry = h_dentry;
+	dinfo->di_btop = btop;
+
+	return err;
+}
+
+static int au_ready_to_write_wh(struct file *file, loff_t len,
+				aufs_bindex_t bcpup, struct au_pin *pin)
+{
+	int err;
+	struct inode *inode, *h_inode;
+	struct dentry *h_dentry, *hi_wh;
+	struct au_cp_generic cpg = {
+		.dentry	= file->f_path.dentry,
+		.bdst	= bcpup,
+		.bsrc	= -1,
+		.len	= len,
+		.pin	= pin
+	};
+
+	au_update_dbtop(cpg.dentry);
+	inode = d_inode(cpg.dentry);
+	h_inode = NULL;
+	if (au_dbtop(cpg.dentry) <= bcpup
+	    && au_dbbot(cpg.dentry) >= bcpup) {
+		h_dentry = au_h_dptr(cpg.dentry, bcpup);
+		if (h_dentry && d_is_positive(h_dentry))
+			h_inode = d_inode(h_dentry);
+	}
+	hi_wh = au_hi_wh(inode, bcpup);
+	if (!hi_wh && !h_inode)
+		err = au_sio_cpup_wh(&cpg, file);
+	else
+		/* already copied-up after unlink */
+		err = au_reopen_wh(file, bcpup, hi_wh);
+
+	if (!err
+	    && (inode->i_nlink > 1
+		|| (inode->i_state & I_LINKABLE))
+	    && au_opt_test(au_mntflags(cpg.dentry->d_sb), PLINK))
+		au_plink_append(inode, bcpup, au_h_dptr(cpg.dentry, bcpup));
+
+	return err;
+}
+
+/*
+ * prepare the @file for writing.
+ */
+int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin)
+{
+	int err;
+	aufs_bindex_t dbtop;
+	struct dentry *parent;
+	struct inode *inode;
+	struct super_block *sb;
+	struct file *h_file;
+	struct au_cp_generic cpg = {
+		.dentry	= file->f_path.dentry,
+		.bdst	= -1,
+		.bsrc	= -1,
+		.len	= len,
+		.pin	= pin,
+		.flags	= AuCpup_DTIME
+	};
+
+	sb = cpg.dentry->d_sb;
+	inode = d_inode(cpg.dentry);
+	cpg.bsrc = au_fbtop(file);
+	err = au_test_ro(sb, cpg.bsrc, inode);
+	if (!err && (au_hf_top(file)->f_mode & FMODE_WRITE)) {
+		err = au_pin(pin, cpg.dentry, cpg.bsrc, AuOpt_UDBA_NONE,
+			     /*flags*/0);
+		goto out;
+	}
+
+	/* need to cpup or reopen */
+	parent = dget_parent(cpg.dentry);
+	di_write_lock_parent(parent);
+	err = AuWbrCopyup(au_sbi(sb), cpg.dentry);
+	cpg.bdst = err;
+	if (unlikely(err < 0))
+		goto out_dgrade;
+	err = 0;
+
+	if (!d_unhashed(cpg.dentry) && !au_h_dptr(parent, cpg.bdst)) {
+		err = au_cpup_dirs(cpg.dentry, cpg.bdst);
+		if (unlikely(err))
+			goto out_dgrade;
+	}
+
+	err = au_pin(pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE,
+		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+	if (unlikely(err))
+		goto out_dgrade;
+
+	dbtop = au_dbtop(cpg.dentry);
+	if (dbtop <= cpg.bdst)
+		cpg.bsrc = cpg.bdst;
+
+	if (dbtop <= cpg.bdst		/* just reopen */
+	    || !d_unhashed(cpg.dentry)	/* copyup and reopen */
+		) {
+		h_file = au_h_open_pre(cpg.dentry, cpg.bsrc, /*force_wr*/0);
+		if (IS_ERR(h_file))
+			err = PTR_ERR(h_file);
+		else {
+			di_downgrade_lock(parent, AuLock_IR);
+			if (dbtop > cpg.bdst)
+				err = au_sio_cpup_simple(&cpg);
+			if (!err)
+				err = au_reopen_nondir(file);
+			au_h_open_post(cpg.dentry, cpg.bsrc, h_file);
+		}
+	} else {			/* copyup as wh and reopen */
+		/*
+		 * since writable hfsplus branch is not supported,
+		 * h_open_pre/post() are unnecessary.
+		 */
+		err = au_ready_to_write_wh(file, len, cpg.bdst, pin);
+		di_downgrade_lock(parent, AuLock_IR);
+	}
+
+	if (!err) {
+		au_pin_set_parent_lflag(pin, /*lflag*/0);
+		goto out_dput; /* success */
+	}
+	au_unpin(pin);
+	goto out_unlock;
+
+out_dgrade:
+	di_downgrade_lock(parent, AuLock_IR);
+out_unlock:
+	di_read_unlock(parent, AuLock_IR);
+out_dput:
+	dput(parent);
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_do_flush(struct file *file, fl_owner_t id,
+		int (*flush)(struct file *file, fl_owner_t id))
+{
+	int err;
+	struct super_block *sb;
+	struct inode *inode;
+
+	inode = file_inode(file);
+	sb = inode->i_sb;
+	si_noflush_read_lock(sb);
+	fi_read_lock(file);
+	ii_read_lock_child(inode);
+
+	err = flush(file, id);
+	au_cpup_attr_timesizes(inode);
+
+	ii_read_unlock(inode);
+	fi_read_unlock(file);
+	si_read_unlock(sb);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_file_refresh_by_inode(struct file *file, int *need_reopen)
+{
+	int err;
+	struct au_pin pin;
+	struct au_finfo *finfo;
+	struct dentry *parent, *hi_wh;
+	struct inode *inode;
+	struct super_block *sb;
+	struct au_cp_generic cpg = {
+		.dentry	= file->f_path.dentry,
+		.bdst	= -1,
+		.bsrc	= -1,
+		.len	= -1,
+		.pin	= &pin,
+		.flags	= AuCpup_DTIME
+	};
+
+	FiMustWriteLock(file);
+
+	err = 0;
+	finfo = au_fi(file);
+	sb = cpg.dentry->d_sb;
+	inode = d_inode(cpg.dentry);
+	cpg.bdst = au_ibtop(inode);
+	if (cpg.bdst == finfo->fi_btop || IS_ROOT(cpg.dentry))
+		goto out;
+
+	parent = dget_parent(cpg.dentry);
+	if (au_test_ro(sb, cpg.bdst, inode)) {
+		di_read_lock_parent(parent, !AuLock_IR);
+		err = AuWbrCopyup(au_sbi(sb), cpg.dentry);
+		cpg.bdst = err;
+		di_read_unlock(parent, !AuLock_IR);
+		if (unlikely(err < 0))
+			goto out_parent;
+		err = 0;
+	}
+
+	di_read_lock_parent(parent, AuLock_IR);
+	hi_wh = au_hi_wh(inode, cpg.bdst);
+	if (!S_ISDIR(inode->i_mode)
+	    && au_opt_test(au_mntflags(sb), PLINK)
+	    && au_plink_test(inode)
+	    && !d_unhashed(cpg.dentry)
+	    && cpg.bdst < au_dbtop(cpg.dentry)) {
+		err = au_test_and_cpup_dirs(cpg.dentry, cpg.bdst);
+		if (unlikely(err))
+			goto out_unlock;
+
+		/* always superio. */
+		err = au_pin(&pin, cpg.dentry, cpg.bdst, AuOpt_UDBA_NONE,
+			     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+		if (!err) {
+			err = au_sio_cpup_simple(&cpg);
+			au_unpin(&pin);
+		}
+	} else if (hi_wh) {
+		/* already copied-up after unlink */
+		err = au_reopen_wh(file, cpg.bdst, hi_wh);
+		*need_reopen = 0;
+	}
+
+out_unlock:
+	di_read_unlock(parent, AuLock_IR);
+out_parent:
+	dput(parent);
+out:
+	return err;
+}
+
+static void au_do_refresh_dir(struct file *file)
+{
+	aufs_bindex_t bindex, bbot, new_bindex, brid;
+	struct au_hfile *p, tmp, *q;
+	struct au_finfo *finfo;
+	struct super_block *sb;
+	struct au_fidir *fidir;
+
+	FiMustWriteLock(file);
+
+	sb = file->f_path.dentry->d_sb;
+	finfo = au_fi(file);
+	fidir = finfo->fi_hdir;
+	AuDebugOn(!fidir);
+	p = fidir->fd_hfile + finfo->fi_btop;
+	brid = p->hf_br->br_id;
+	bbot = fidir->fd_bbot;
+	for (bindex = finfo->fi_btop; bindex <= bbot; bindex++, p++) {
+		if (!p->hf_file)
+			continue;
+
+		new_bindex = au_br_index(sb, p->hf_br->br_id);
+		if (new_bindex == bindex)
+			continue;
+		if (new_bindex < 0) {
+			au_set_h_fptr(file, bindex, NULL);
+			continue;
+		}
+
+		/* swap two lower inode, and loop again */
+		q = fidir->fd_hfile + new_bindex;
+		tmp = *q;
+		*q = *p;
+		*p = tmp;
+		if (tmp.hf_file) {
+			bindex--;
+			p--;
+		}
+	}
+
+	p = fidir->fd_hfile;
+	if (!au_test_mmapped(file) && !d_unlinked(file->f_path.dentry)) {
+		bbot = au_sbbot(sb);
+		for (finfo->fi_btop = 0; finfo->fi_btop <= bbot;
+		     finfo->fi_btop++, p++)
+			if (p->hf_file) {
+				if (file_inode(p->hf_file))
+					break;
+				au_hfput(p, /*execed*/0);
+			}
+	} else {
+		bbot = au_br_index(sb, brid);
+		for (finfo->fi_btop = 0; finfo->fi_btop < bbot;
+		     finfo->fi_btop++, p++)
+			if (p->hf_file)
+				au_hfput(p, /*execed*/0);
+		bbot = au_sbbot(sb);
+	}
+
+	p = fidir->fd_hfile + bbot;
+	for (fidir->fd_bbot = bbot; fidir->fd_bbot >= finfo->fi_btop;
+	     fidir->fd_bbot--, p--)
+		if (p->hf_file) {
+			if (file_inode(p->hf_file))
+				break;
+			au_hfput(p, /*execed*/0);
+		}
+	AuDebugOn(fidir->fd_bbot < finfo->fi_btop);
+}
+
+/*
+ * after branch manipulating, refresh the file.
+ */
+static int refresh_file(struct file *file, int (*reopen)(struct file *file))
+{
+	int err, need_reopen, nbr;
+	aufs_bindex_t bbot, bindex;
+	struct dentry *dentry;
+	struct super_block *sb;
+	struct au_finfo *finfo;
+	struct au_hfile *hfile;
+
+	dentry = file->f_path.dentry;
+	sb = dentry->d_sb;
+	nbr = au_sbbot(sb) + 1;
+	finfo = au_fi(file);
+	if (!finfo->fi_hdir) {
+		hfile = &finfo->fi_htop;
+		AuDebugOn(!hfile->hf_file);
+		bindex = au_br_index(sb, hfile->hf_br->br_id);
+		AuDebugOn(bindex < 0);
+		if (bindex != finfo->fi_btop)
+			au_set_fbtop(file, bindex);
+	} else {
+		err = au_fidir_realloc(finfo, nbr, /*may_shrink*/0);
+		if (unlikely(err))
+			goto out;
+		au_do_refresh_dir(file);
+	}
+
+	err = 0;
+	need_reopen = 1;
+	if (!au_test_mmapped(file))
+		err = au_file_refresh_by_inode(file, &need_reopen);
+	if (finfo->fi_hdir)
+		/* harmless if err */
+		au_fidir_realloc(finfo, nbr, /*may_shrink*/1);
+	if (!err && need_reopen && !d_unlinked(dentry))
+		err = reopen(file);
+	if (!err) {
+		au_update_figen(file);
+		goto out; /* success */
+	}
+
+	/* error, close all lower files */
+	if (finfo->fi_hdir) {
+		bbot = au_fbbot_dir(file);
+		for (bindex = au_fbtop(file); bindex <= bbot; bindex++)
+			au_set_h_fptr(file, bindex, NULL);
+	}
+
+out:
+	return err;
+}
+
+/* common function to regular file and dir */
+int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file),
+			  int wlock, unsigned int fi_lsc)
+{
+	int err;
+	unsigned int sigen, figen;
+	aufs_bindex_t btop;
+	unsigned char pseudo_link;
+	struct dentry *dentry;
+	struct inode *inode;
+
+	err = 0;
+	dentry = file->f_path.dentry;
+	inode = d_inode(dentry);
+	sigen = au_sigen(dentry->d_sb);
+	fi_write_lock_nested(file, fi_lsc);
+	figen = au_figen(file);
+	if (!fi_lsc)
+		di_write_lock_child(dentry);
+	else
+		di_write_lock_child2(dentry);
+	btop = au_dbtop(dentry);
+	pseudo_link = (btop != au_ibtop(inode));
+	if (sigen == figen && !pseudo_link && au_fbtop(file) == btop) {
+		if (!wlock) {
+			di_downgrade_lock(dentry, AuLock_IR);
+			fi_downgrade_lock(file);
+		}
+		goto out; /* success */
+	}
+
+	AuDbg("sigen %d, figen %d\n", sigen, figen);
+	if (au_digen_test(dentry, sigen)) {
+		err = au_reval_dpath(dentry, sigen);
+		AuDebugOn(!err && au_digen_test(dentry, sigen));
+	}
+
+	if (!err)
+		err = refresh_file(file, reopen);
+	if (!err) {
+		if (!wlock) {
+			di_downgrade_lock(dentry, AuLock_IR);
+			fi_downgrade_lock(file);
+		}
+	} else {
+		di_write_unlock(dentry);
+		fi_write_unlock(file);
+	}
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* cf. aufs_nopage() */
+/* for madvise(2) */
+static int aufs_readpage(struct file *file __maybe_unused, struct page *page)
+{
+	unlock_page(page);
+	return 0;
+}
+
+/* it will never be called, but necessary to support O_DIRECT */
+static ssize_t aufs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
+{ BUG(); return 0; }
+
+/* they will never be called. */
+#ifdef CONFIG_AUFS_DEBUG
+static int aufs_write_begin(struct file *file, struct address_space *mapping,
+			    loff_t pos, unsigned len, unsigned flags,
+			    struct page **pagep, void **fsdata)
+{ AuUnsupport(); return 0; }
+static int aufs_write_end(struct file *file, struct address_space *mapping,
+			  loff_t pos, unsigned len, unsigned copied,
+			  struct page *page, void *fsdata)
+{ AuUnsupport(); return 0; }
+static int aufs_writepage(struct page *page, struct writeback_control *wbc)
+{ AuUnsupport(); return 0; }
+
+static int aufs_set_page_dirty(struct page *page)
+{ AuUnsupport(); return 0; }
+static void aufs_invalidatepage(struct page *page, unsigned int offset,
+				unsigned int length)
+{ AuUnsupport(); }
+static int aufs_releasepage(struct page *page, gfp_t gfp)
+{ AuUnsupport(); return 0; }
+#if 0 /* called by memory compaction regardless file */
+static int aufs_migratepage(struct address_space *mapping, struct page *newpage,
+			    struct page *page, enum migrate_mode mode)
+{ AuUnsupport(); return 0; }
+#endif
+static bool aufs_isolate_page(struct page *page, isolate_mode_t mode)
+{ AuUnsupport(); return true; }
+static void aufs_putback_page(struct page *page)
+{ AuUnsupport(); }
+static int aufs_launder_page(struct page *page)
+{ AuUnsupport(); return 0; }
+static int aufs_is_partially_uptodate(struct page *page,
+				      unsigned long from,
+				      unsigned long count)
+{ AuUnsupport(); return 0; }
+static void aufs_is_dirty_writeback(struct page *page, bool *dirty,
+				    bool *writeback)
+{ AuUnsupport(); }
+static int aufs_error_remove_page(struct address_space *mapping,
+				  struct page *page)
+{ AuUnsupport(); return 0; }
+static int aufs_swap_activate(struct swap_info_struct *sis, struct file *file,
+			      sector_t *span)
+{ AuUnsupport(); return 0; }
+static void aufs_swap_deactivate(struct file *file)
+{ AuUnsupport(); }
+#endif /* CONFIG_AUFS_DEBUG */
+
+const struct address_space_operations aufs_aop = {
+	.readpage		= aufs_readpage,
+	.direct_IO		= aufs_direct_IO,
+#ifdef CONFIG_AUFS_DEBUG
+	.writepage		= aufs_writepage,
+	/* no writepages, because of writepage */
+	.set_page_dirty		= aufs_set_page_dirty,
+	/* no readpages, because of readpage */
+	.write_begin		= aufs_write_begin,
+	.write_end		= aufs_write_end,
+	/* no bmap, no block device */
+	.invalidatepage		= aufs_invalidatepage,
+	.releasepage		= aufs_releasepage,
+	/* is fallback_migrate_page ok? */
+	/* .migratepage		= aufs_migratepage, */
+	.isolate_page		= aufs_isolate_page,
+	.putback_page		= aufs_putback_page,
+	.launder_page		= aufs_launder_page,
+	.is_partially_uptodate	= aufs_is_partially_uptodate,
+	.is_dirty_writeback	= aufs_is_dirty_writeback,
+	.error_remove_page	= aufs_error_remove_page,
+	.swap_activate		= aufs_swap_activate,
+	.swap_deactivate	= aufs_swap_deactivate
+#endif /* CONFIG_AUFS_DEBUG */
+};
diff -Naur --no-dereference a/fs/aufs/file.h b/fs/aufs/file.h
--- a/fs/aufs/file.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/file.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,342 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * file operations
+ */
+
+#ifndef __AUFS_FILE_H__
+#define __AUFS_FILE_H__
+
+#ifdef __KERNEL__
+
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/mm_types.h>
+#include <linux/poll.h>
+#include "rwsem.h"
+
+struct au_branch;
+struct au_hfile {
+	struct file		*hf_file;
+	struct au_branch	*hf_br;
+};
+
+struct au_vdir;
+struct au_fidir {
+	aufs_bindex_t		fd_bbot;
+	aufs_bindex_t		fd_nent;
+	struct au_vdir		*fd_vdir_cache;
+	struct au_hfile		fd_hfile[];
+};
+
+static inline int au_fidir_sz(int nent)
+{
+	AuDebugOn(nent < 0);
+	return sizeof(struct au_fidir) + sizeof(struct au_hfile) * nent;
+}
+
+struct au_finfo {
+	atomic_t		fi_generation;
+
+	struct au_rwsem		fi_rwsem;
+	aufs_bindex_t		fi_btop;
+
+	/* do not union them */
+	struct {				/* for non-dir */
+		struct au_hfile			fi_htop;
+		atomic_t			fi_mmapped;
+	};
+	struct au_fidir		*fi_hdir;	/* for dir only */
+
+	struct hlist_bl_node	fi_hlist;
+	struct file		*fi_file;	/* very ugly */
+	struct rcu_head		rcu;
+} ____cacheline_aligned_in_smp;
+
+/* ---------------------------------------------------------------------- */
+
+/* file.c */
+extern const struct address_space_operations aufs_aop;
+unsigned int au_file_roflags(unsigned int flags);
+struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags,
+		       struct file *file, int force_wr);
+struct au_do_open_args {
+	int		aopen;
+	int		(*open)(struct file *file, int flags,
+				struct file *h_file);
+	struct au_fidir	*fidir;
+	struct file	*h_file;
+};
+int au_do_open(struct file *file, struct au_do_open_args *args);
+int au_reopen_nondir(struct file *file);
+struct au_pin;
+int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin);
+int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file),
+			  int wlock, unsigned int fi_lsc);
+int au_do_flush(struct file *file, fl_owner_t id,
+		int (*flush)(struct file *file, fl_owner_t id));
+
+/* poll.c */
+#ifdef CONFIG_AUFS_POLL
+__poll_t aufs_poll(struct file *file, struct poll_table_struct *pt);
+#endif
+
+#ifdef CONFIG_AUFS_BR_HFSPLUS
+/* hfsplus.c */
+struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex,
+			   int force_wr);
+void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex,
+		    struct file *h_file);
+#else
+AuStub(struct file *, au_h_open_pre, return NULL, struct dentry *dentry,
+       aufs_bindex_t bindex, int force_wr)
+AuStubVoid(au_h_open_post, struct dentry *dentry, aufs_bindex_t bindex,
+	   struct file *h_file);
+#endif
+
+/* f_op.c */
+extern const struct file_operations aufs_file_fop;
+int au_do_open_nondir(struct file *file, int flags, struct file *h_file);
+int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file);
+struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc);
+
+/* finfo.c */
+void au_hfput(struct au_hfile *hf, int execed);
+void au_set_h_fptr(struct file *file, aufs_bindex_t bindex,
+		   struct file *h_file);
+
+void au_update_figen(struct file *file);
+struct au_fidir *au_fidir_alloc(struct super_block *sb);
+int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink);
+
+void au_fi_init_once(void *_fi);
+void au_finfo_fin(struct file *file);
+int au_finfo_init(struct file *file, struct au_fidir *fidir);
+
+/* ioctl.c */
+long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd,
+			   unsigned long arg);
+long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd,
+			      unsigned long arg);
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_finfo *au_fi(struct file *file)
+{
+	return file->private_data;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define fi_read_lock(f)	au_rw_read_lock(&au_fi(f)->fi_rwsem)
+#define fi_write_lock(f)	au_rw_write_lock(&au_fi(f)->fi_rwsem)
+#define fi_read_trylock(f)	au_rw_read_trylock(&au_fi(f)->fi_rwsem)
+#define fi_write_trylock(f)	au_rw_write_trylock(&au_fi(f)->fi_rwsem)
+/*
+#define fi_read_trylock_nested(f) \
+	au_rw_read_trylock_nested(&au_fi(f)->fi_rwsem)
+#define fi_write_trylock_nested(f) \
+	au_rw_write_trylock_nested(&au_fi(f)->fi_rwsem)
+*/
+
+#define fi_read_unlock(f)	au_rw_read_unlock(&au_fi(f)->fi_rwsem)
+#define fi_write_unlock(f)	au_rw_write_unlock(&au_fi(f)->fi_rwsem)
+#define fi_downgrade_lock(f)	au_rw_dgrade_lock(&au_fi(f)->fi_rwsem)
+
+/* lock subclass for finfo */
+enum {
+	AuLsc_FI_1,
+	AuLsc_FI_2
+};
+
+static inline void fi_read_lock_nested(struct file *f, unsigned int lsc)
+{
+	au_rw_read_lock_nested(&au_fi(f)->fi_rwsem, lsc);
+}
+
+static inline void fi_write_lock_nested(struct file *f, unsigned int lsc)
+{
+	au_rw_write_lock_nested(&au_fi(f)->fi_rwsem, lsc);
+}
+
+/*
+ * fi_read_lock_1, fi_write_lock_1,
+ * fi_read_lock_2, fi_write_lock_2
+ */
+#define AuReadLockFunc(name) \
+static inline void fi_read_lock_##name(struct file *f) \
+{ fi_read_lock_nested(f, AuLsc_FI_##name); }
+
+#define AuWriteLockFunc(name) \
+static inline void fi_write_lock_##name(struct file *f) \
+{ fi_write_lock_nested(f, AuLsc_FI_##name); }
+
+#define AuRWLockFuncs(name) \
+	AuReadLockFunc(name) \
+	AuWriteLockFunc(name)
+
+AuRWLockFuncs(1);
+AuRWLockFuncs(2);
+
+#undef AuReadLockFunc
+#undef AuWriteLockFunc
+#undef AuRWLockFuncs
+
+#define FiMustNoWaiters(f)	AuRwMustNoWaiters(&au_fi(f)->fi_rwsem)
+#define FiMustAnyLock(f)	AuRwMustAnyLock(&au_fi(f)->fi_rwsem)
+#define FiMustWriteLock(f)	AuRwMustWriteLock(&au_fi(f)->fi_rwsem)
+
+/* ---------------------------------------------------------------------- */
+
+/* todo: hard/soft set? */
+static inline aufs_bindex_t au_fbtop(struct file *file)
+{
+	FiMustAnyLock(file);
+	return au_fi(file)->fi_btop;
+}
+
+static inline aufs_bindex_t au_fbbot_dir(struct file *file)
+{
+	FiMustAnyLock(file);
+	AuDebugOn(!au_fi(file)->fi_hdir);
+	return au_fi(file)->fi_hdir->fd_bbot;
+}
+
+static inline struct au_vdir *au_fvdir_cache(struct file *file)
+{
+	FiMustAnyLock(file);
+	AuDebugOn(!au_fi(file)->fi_hdir);
+	return au_fi(file)->fi_hdir->fd_vdir_cache;
+}
+
+static inline void au_set_fbtop(struct file *file, aufs_bindex_t bindex)
+{
+	FiMustWriteLock(file);
+	au_fi(file)->fi_btop = bindex;
+}
+
+static inline void au_set_fbbot_dir(struct file *file, aufs_bindex_t bindex)
+{
+	FiMustWriteLock(file);
+	AuDebugOn(!au_fi(file)->fi_hdir);
+	au_fi(file)->fi_hdir->fd_bbot = bindex;
+}
+
+static inline void au_set_fvdir_cache(struct file *file,
+				      struct au_vdir *vdir_cache)
+{
+	FiMustWriteLock(file);
+	AuDebugOn(!au_fi(file)->fi_hdir);
+	au_fi(file)->fi_hdir->fd_vdir_cache = vdir_cache;
+}
+
+static inline struct file *au_hf_top(struct file *file)
+{
+	FiMustAnyLock(file);
+	AuDebugOn(au_fi(file)->fi_hdir);
+	return au_fi(file)->fi_htop.hf_file;
+}
+
+static inline struct file *au_hf_dir(struct file *file, aufs_bindex_t bindex)
+{
+	FiMustAnyLock(file);
+	AuDebugOn(!au_fi(file)->fi_hdir);
+	return au_fi(file)->fi_hdir->fd_hfile[0 + bindex].hf_file;
+}
+
+/* todo: memory barrier? */
+static inline unsigned int au_figen(struct file *f)
+{
+	return atomic_read(&au_fi(f)->fi_generation);
+}
+
+static inline void au_set_mmapped(struct file *f)
+{
+	if (atomic_inc_return(&au_fi(f)->fi_mmapped))
+		return;
+	pr_warn("fi_mmapped wrapped around\n");
+	while (!atomic_inc_return(&au_fi(f)->fi_mmapped))
+		;
+}
+
+static inline void au_unset_mmapped(struct file *f)
+{
+	atomic_dec(&au_fi(f)->fi_mmapped);
+}
+
+static inline int au_test_mmapped(struct file *f)
+{
+	return atomic_read(&au_fi(f)->fi_mmapped);
+}
+
+/* customize vma->vm_file */
+
+static inline void au_do_vm_file_reset(struct vm_area_struct *vma,
+				       struct file *file)
+{
+	struct file *f;
+
+	f = vma->vm_file;
+	get_file(file);
+	vma->vm_file = file;
+	fput(f);
+}
+
+#ifdef CONFIG_MMU
+#define AuDbgVmRegion(file, vma) do {} while (0)
+
+static inline void au_vm_file_reset(struct vm_area_struct *vma,
+				    struct file *file)
+{
+	au_do_vm_file_reset(vma, file);
+}
+#else
+#define AuDbgVmRegion(file, vma) \
+	AuDebugOn((vma)->vm_region && (vma)->vm_region->vm_file != (file))
+
+static inline void au_vm_file_reset(struct vm_area_struct *vma,
+				    struct file *file)
+{
+	struct file *f;
+
+	au_do_vm_file_reset(vma, file);
+	f = vma->vm_region->vm_file;
+	get_file(file);
+	vma->vm_region->vm_file = file;
+	fput(f);
+}
+#endif /* CONFIG_MMU */
+
+/* handle vma->vm_prfile */
+static inline void au_vm_prfile_set(struct vm_area_struct *vma,
+				    struct file *file)
+{
+	get_file(file);
+	vma->vm_prfile = file;
+#ifndef CONFIG_MMU
+	get_file(file);
+	vma->vm_region->vm_prfile = file;
+#endif
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_FILE_H__ */
diff -Naur --no-dereference a/fs/aufs/finfo.c b/fs/aufs/finfo.c
--- a/fs/aufs/finfo.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/finfo.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * file private data
+ */
+
+#include "aufs.h"
+
+void au_hfput(struct au_hfile *hf, int execed)
+{
+	if (execed)
+		allow_write_access(hf->hf_file);
+	fput(hf->hf_file);
+	hf->hf_file = NULL;
+	au_lcnt_dec(&hf->hf_br->br_nfiles);
+	hf->hf_br = NULL;
+}
+
+void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, struct file *val)
+{
+	struct au_finfo *finfo = au_fi(file);
+	struct au_hfile *hf;
+	struct au_fidir *fidir;
+
+	fidir = finfo->fi_hdir;
+	if (!fidir) {
+		AuDebugOn(finfo->fi_btop != bindex);
+		hf = &finfo->fi_htop;
+	} else
+		hf = fidir->fd_hfile + bindex;
+
+	if (hf && hf->hf_file)
+		au_hfput(hf, vfsub_file_execed(file));
+	if (val) {
+		FiMustWriteLock(file);
+		AuDebugOn(IS_ERR_OR_NULL(file->f_path.dentry));
+		hf->hf_file = val;
+		hf->hf_br = au_sbr(file->f_path.dentry->d_sb, bindex);
+	}
+}
+
+void au_update_figen(struct file *file)
+{
+	atomic_set(&au_fi(file)->fi_generation, au_digen(file->f_path.dentry));
+	/* smp_mb(); */ /* atomic_set */
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_fidir *au_fidir_alloc(struct super_block *sb)
+{
+	struct au_fidir *fidir;
+	int nbr;
+
+	nbr = au_sbbot(sb) + 1;
+	if (nbr < 2)
+		nbr = 2; /* initial allocate for 2 branches */
+	fidir = kzalloc(au_fidir_sz(nbr), GFP_NOFS);
+	if (fidir) {
+		fidir->fd_bbot = -1;
+		fidir->fd_nent = nbr;
+	}
+
+	return fidir;
+}
+
+int au_fidir_realloc(struct au_finfo *finfo, int nbr, int may_shrink)
+{
+	int err;
+	struct au_fidir *fidir, *p;
+
+	AuRwMustWriteLock(&finfo->fi_rwsem);
+	fidir = finfo->fi_hdir;
+	AuDebugOn(!fidir);
+
+	err = -ENOMEM;
+	p = au_kzrealloc(fidir, au_fidir_sz(fidir->fd_nent), au_fidir_sz(nbr),
+			 GFP_NOFS, may_shrink);
+	if (p) {
+		p->fd_nent = nbr;
+		finfo->fi_hdir = p;
+		err = 0;
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_finfo_fin(struct file *file)
+{
+	struct au_finfo *finfo;
+
+	au_lcnt_dec(&au_sbi(file->f_path.dentry->d_sb)->si_nfiles);
+
+	finfo = au_fi(file);
+	AuDebugOn(finfo->fi_hdir);
+	AuRwDestroy(&finfo->fi_rwsem);
+	au_cache_free_finfo(finfo);
+}
+
+void au_fi_init_once(void *_finfo)
+{
+	struct au_finfo *finfo = _finfo;
+
+	au_rw_init(&finfo->fi_rwsem);
+}
+
+int au_finfo_init(struct file *file, struct au_fidir *fidir)
+{
+	int err;
+	struct au_finfo *finfo;
+	struct dentry *dentry;
+
+	err = -ENOMEM;
+	dentry = file->f_path.dentry;
+	finfo = au_cache_alloc_finfo();
+	if (unlikely(!finfo))
+		goto out;
+
+	err = 0;
+	au_lcnt_inc(&au_sbi(dentry->d_sb)->si_nfiles);
+	au_rw_write_lock(&finfo->fi_rwsem);
+	finfo->fi_btop = -1;
+	finfo->fi_hdir = fidir;
+	atomic_set(&finfo->fi_generation, au_digen(dentry));
+	/* smp_mb(); */ /* atomic_set */
+
+	file->private_data = finfo;
+
+out:
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/f_op.c b/fs/aufs/f_op.c
--- a/fs/aufs/f_op.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/f_op.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,771 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * file and vm operations
+ */
+
+#include <linux/aio.h>
+#include <linux/fs_stack.h>
+#include <linux/mman.h>
+#include <linux/security.h>
+#include "aufs.h"
+
+int au_do_open_nondir(struct file *file, int flags, struct file *h_file)
+{
+	int err;
+	aufs_bindex_t bindex;
+	struct dentry *dentry, *h_dentry;
+	struct au_finfo *finfo;
+	struct inode *h_inode;
+
+	FiMustWriteLock(file);
+
+	err = 0;
+	dentry = file->f_path.dentry;
+	AuDebugOn(IS_ERR_OR_NULL(dentry));
+	finfo = au_fi(file);
+	memset(&finfo->fi_htop, 0, sizeof(finfo->fi_htop));
+	atomic_set(&finfo->fi_mmapped, 0);
+	bindex = au_dbtop(dentry);
+	if (!h_file) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb);
+		if (unlikely(err))
+			goto out;
+		h_file = au_h_open(dentry, bindex, flags, file, /*force_wr*/0);
+		if (IS_ERR(h_file)) {
+			err = PTR_ERR(h_file);
+			goto out;
+		}
+	} else {
+		h_dentry = h_file->f_path.dentry;
+		err = vfsub_test_mntns(file->f_path.mnt, h_dentry->d_sb);
+		if (unlikely(err))
+			goto out;
+		/* br ref is already inc-ed */
+	}
+
+	if ((flags & __O_TMPFILE)
+	    && !(flags & O_EXCL)) {
+		h_inode = file_inode(h_file);
+		spin_lock(&h_inode->i_lock);
+		h_inode->i_state |= I_LINKABLE;
+		spin_unlock(&h_inode->i_lock);
+	}
+	au_set_fbtop(file, bindex);
+	au_set_h_fptr(file, bindex, h_file);
+	au_update_figen(file);
+	/* todo: necessary? */
+	/* file->f_ra = h_file->f_ra; */
+
+out:
+	return err;
+}
+
+static int aufs_open_nondir(struct inode *inode __maybe_unused,
+			    struct file *file)
+{
+	int err;
+	struct super_block *sb;
+	struct au_do_open_args args = {
+		.open	= au_do_open_nondir
+	};
+
+	AuDbg("%pD, f_flags 0x%x, f_mode 0x%x\n",
+	      file, vfsub_file_flags(file), file->f_mode);
+
+	sb = file->f_path.dentry->d_sb;
+	si_read_lock(sb, AuLock_FLUSH);
+	err = au_do_open(file, &args);
+	si_read_unlock(sb);
+	return err;
+}
+
+int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file)
+{
+	struct au_finfo *finfo;
+	aufs_bindex_t bindex;
+
+	finfo = au_fi(file);
+	au_hbl_del(&finfo->fi_hlist,
+		   &au_sbi(file->f_path.dentry->d_sb)->si_files);
+	bindex = finfo->fi_btop;
+	if (bindex >= 0)
+		au_set_h_fptr(file, bindex, NULL);
+
+	au_finfo_fin(file);
+	return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_do_flush_nondir(struct file *file, fl_owner_t id)
+{
+	int err;
+	struct file *h_file;
+
+	err = 0;
+	h_file = au_hf_top(file);
+	if (h_file)
+		err = vfsub_flush(h_file, id);
+	return err;
+}
+
+static int aufs_flush_nondir(struct file *file, fl_owner_t id)
+{
+	return au_do_flush(file, id, au_do_flush_nondir);
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * read and write functions acquire [fdi]_rwsem once, but release before
+ * mmap_sem. This is because to stop a race condition between mmap(2).
+ * Releasing these aufs-rwsem should be safe, no branch-management (by keeping
+ * si_rwsem), no harmful copy-up should happen. Actually copy-up may happen in
+ * read functions after [fdi]_rwsem are released, but it should be harmless.
+ */
+
+/* Callers should call au_read_post() or fput() in the end */
+struct file *au_read_pre(struct file *file, int keep_fi, unsigned int lsc)
+{
+	struct file *h_file;
+	int err;
+
+	err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/0, lsc);
+	if (!err) {
+		di_read_unlock(file->f_path.dentry, AuLock_IR);
+		h_file = au_hf_top(file);
+		get_file(h_file);
+		if (!keep_fi)
+			fi_read_unlock(file);
+	} else
+		h_file = ERR_PTR(err);
+
+	return h_file;
+}
+
+static void au_read_post(struct inode *inode, struct file *h_file)
+{
+	/* update without lock, I don't think it a problem */
+	fsstack_copy_attr_atime(inode, file_inode(h_file));
+	fput(h_file);
+}
+
+struct au_write_pre {
+	/* input */
+	unsigned int lsc;
+
+	/* output */
+	blkcnt_t blks;
+	aufs_bindex_t btop;
+};
+
+/*
+ * return with iinfo is write-locked
+ * callers should call au_write_post() or iinfo_write_unlock() + fput() in the
+ * end
+ */
+static struct file *au_write_pre(struct file *file, int do_ready,
+				 struct au_write_pre *wpre)
+{
+	struct file *h_file;
+	struct dentry *dentry;
+	int err;
+	unsigned int lsc;
+	struct au_pin pin;
+
+	lsc = 0;
+	if (wpre)
+		lsc = wpre->lsc;
+	err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1, lsc);
+	h_file = ERR_PTR(err);
+	if (unlikely(err))
+		goto out;
+
+	dentry = file->f_path.dentry;
+	if (do_ready) {
+		err = au_ready_to_write(file, -1, &pin);
+		if (unlikely(err)) {
+			h_file = ERR_PTR(err);
+			di_write_unlock(dentry);
+			goto out_fi;
+		}
+	}
+
+	di_downgrade_lock(dentry, /*flags*/0);
+	if (wpre)
+		wpre->btop = au_fbtop(file);
+	h_file = au_hf_top(file);
+	get_file(h_file);
+	if (wpre)
+		wpre->blks = file_inode(h_file)->i_blocks;
+	if (do_ready)
+		au_unpin(&pin);
+	di_read_unlock(dentry, /*flags*/0);
+
+out_fi:
+	fi_write_unlock(file);
+out:
+	return h_file;
+}
+
+static void au_write_post(struct inode *inode, struct file *h_file,
+			  struct au_write_pre *wpre, ssize_t written)
+{
+	struct inode *h_inode;
+
+	au_cpup_attr_timesizes(inode);
+	AuDebugOn(au_ibtop(inode) != wpre->btop);
+	h_inode = file_inode(h_file);
+	inode->i_mode = h_inode->i_mode;
+	ii_write_unlock(inode);
+	/* AuDbg("blks %llu, %llu\n", (u64)blks, (u64)h_inode->i_blocks); */
+	if (written > 0)
+		au_fhsm_wrote(inode->i_sb, wpre->btop,
+			      /*force*/h_inode->i_blocks > wpre->blks);
+	fput(h_file);
+}
+
+/*
+ * todo: very ugly
+ * it locks both of i_mutex and si_rwsem for read in safe.
+ * if the plink maintenance mode continues forever (that is the problem),
+ * may loop forever.
+ */
+static void au_mtx_and_read_lock(struct inode *inode)
+{
+	int err;
+	struct super_block *sb = inode->i_sb;
+
+	while (1) {
+		inode_lock(inode);
+		err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+		if (!err)
+			break;
+		inode_unlock(inode);
+		si_read_lock(sb, AuLock_NOPLMW);
+		si_read_unlock(sb);
+	}
+}
+
+static ssize_t au_do_iter(struct file *h_file, int rw, struct kiocb *kio,
+			  struct iov_iter *iov_iter)
+{
+	ssize_t err;
+	struct file *file;
+	ssize_t (*iter)(struct kiocb *, struct iov_iter *);
+
+	err = security_file_permission(h_file, rw);
+	if (unlikely(err))
+		goto out;
+
+	err = -ENOSYS;	/* the branch doesn't have its ->(read|write)_iter() */
+	iter = NULL;
+	if (rw == MAY_READ)
+		iter = h_file->f_op->read_iter;
+	else if (rw == MAY_WRITE)
+		iter = h_file->f_op->write_iter;
+
+	file = kio->ki_filp;
+	kio->ki_filp = h_file;
+	if (iter) {
+		lockdep_off();
+		err = iter(kio, iov_iter);
+		lockdep_on();
+	} else
+		/* currently there is no such fs */
+		WARN_ON_ONCE(1);
+	kio->ki_filp = file;
+
+out:
+	return err;
+}
+
+static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter)
+{
+	ssize_t err;
+	struct file *file, *h_file;
+	struct inode *inode;
+	struct super_block *sb;
+
+	file = kio->ki_filp;
+	inode = file_inode(file);
+	sb = inode->i_sb;
+	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+	h_file = au_read_pre(file, /*keep_fi*/1, /*lsc*/0);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	if (au_test_loopback_kthread()) {
+		au_warn_loopback(h_file->f_path.dentry->d_sb);
+		if (file->f_mapping != h_file->f_mapping) {
+			file->f_mapping = h_file->f_mapping;
+			smp_mb(); /* unnecessary? */
+		}
+	}
+	fi_read_unlock(file);
+
+	err = au_do_iter(h_file, MAY_READ, kio, iov_iter);
+	/* todo: necessary? */
+	/* file->f_ra = h_file->f_ra; */
+	au_read_post(inode, h_file);
+
+out:
+	si_read_unlock(sb);
+	return err;
+}
+
+static ssize_t aufs_write_iter(struct kiocb *kio, struct iov_iter *iov_iter)
+{
+	ssize_t err;
+	struct au_write_pre wpre;
+	struct inode *inode;
+	struct file *file, *h_file;
+
+	file = kio->ki_filp;
+	inode = file_inode(file);
+	au_mtx_and_read_lock(inode);
+
+	wpre.lsc = 0;
+	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	err = au_do_iter(h_file, MAY_WRITE, kio, iov_iter);
+	au_write_post(inode, h_file, &wpre, err);
+
+out:
+	si_read_unlock(inode->i_sb);
+	inode_unlock(inode);
+	return err;
+}
+
+/*
+ * We may be able to remove aufs_splice_{read,write}() since almost all FSes
+ * don't have their own .splice_{read,write} implimentations, and they use
+ * generic_file_splice_read() and iter_file_splice_write() who can act like the
+ * simple converters to f_op->iter_read() and ->iter_write().
+ * But we keep our own implementations because some non-mainlined FSes may have
+ * their own .splice_{read,write} implimentations and aufs doesn't want to take
+ * away an opportunity to co-work with aufs from them.
+ */
+static ssize_t aufs_splice_read(struct file *file, loff_t *ppos,
+				struct pipe_inode_info *pipe, size_t len,
+				unsigned int flags)
+{
+	ssize_t err;
+	struct file *h_file;
+	struct inode *inode;
+	struct super_block *sb;
+
+	inode = file_inode(file);
+	sb = inode->i_sb;
+	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	err = vfsub_splice_to(h_file, ppos, pipe, len, flags);
+	/* todo: necessary? */
+	/* file->f_ra = h_file->f_ra; */
+	au_read_post(inode, h_file);
+
+out:
+	si_read_unlock(sb);
+	return err;
+}
+
+static ssize_t
+aufs_splice_write(struct pipe_inode_info *pipe, struct file *file, loff_t *ppos,
+		  size_t len, unsigned int flags)
+{
+	ssize_t err;
+	struct au_write_pre wpre;
+	struct inode *inode;
+	struct file *h_file;
+
+	inode = file_inode(file);
+	au_mtx_and_read_lock(inode);
+
+	wpre.lsc = 0;
+	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	err = vfsub_splice_from(pipe, h_file, ppos, len, flags);
+	au_write_post(inode, h_file, &wpre, err);
+
+out:
+	si_read_unlock(inode->i_sb);
+	inode_unlock(inode);
+	return err;
+}
+
+static long aufs_fallocate(struct file *file, int mode, loff_t offset,
+			   loff_t len)
+{
+	long err;
+	struct au_write_pre wpre;
+	struct inode *inode;
+	struct file *h_file;
+
+	inode = file_inode(file);
+	au_mtx_and_read_lock(inode);
+
+	wpre.lsc = 0;
+	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	lockdep_off();
+	err = vfs_fallocate(h_file, mode, offset, len);
+	lockdep_on();
+	au_write_post(inode, h_file, &wpre, /*written*/1);
+
+out:
+	si_read_unlock(inode->i_sb);
+	inode_unlock(inode);
+	return err;
+}
+
+static ssize_t aufs_copy_file_range(struct file *src, loff_t src_pos,
+				    struct file *dst, loff_t dst_pos,
+				    size_t len, unsigned int flags)
+{
+	ssize_t err;
+	struct au_write_pre wpre;
+	enum { SRC, DST };
+	struct {
+		struct inode *inode;
+		struct file *h_file;
+		struct super_block *h_sb;
+	} a[2];
+#define a_src	a[SRC]
+#define a_dst	a[DST]
+
+	err = -EINVAL;
+	a_src.inode = file_inode(src);
+	if (unlikely(!S_ISREG(a_src.inode->i_mode)))
+		goto out;
+	a_dst.inode = file_inode(dst);
+	if (unlikely(!S_ISREG(a_dst.inode->i_mode)))
+		goto out;
+
+	au_mtx_and_read_lock(a_dst.inode);
+	/*
+	 * in order to match the order in di_write_lock2_{child,parent}(),
+	 * use f_path.dentry for this comparison.
+	 */
+	if (src->f_path.dentry < dst->f_path.dentry) {
+		a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_1);
+		err = PTR_ERR(a_src.h_file);
+		if (IS_ERR(a_src.h_file))
+			goto out_si;
+
+		wpre.lsc = AuLsc_FI_2;
+		a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre);
+		err = PTR_ERR(a_dst.h_file);
+		if (IS_ERR(a_dst.h_file)) {
+			au_read_post(a_src.inode, a_src.h_file);
+			goto out_si;
+		}
+	} else {
+		wpre.lsc = AuLsc_FI_1;
+		a_dst.h_file = au_write_pre(dst, /*do_ready*/1, &wpre);
+		err = PTR_ERR(a_dst.h_file);
+		if (IS_ERR(a_dst.h_file))
+			goto out_si;
+
+		a_src.h_file = au_read_pre(src, /*keep_fi*/1, AuLsc_FI_2);
+		err = PTR_ERR(a_src.h_file);
+		if (IS_ERR(a_src.h_file)) {
+			au_write_post(a_dst.inode, a_dst.h_file, &wpre,
+				      /*written*/0);
+			goto out_si;
+		}
+	}
+
+	err = -EXDEV;
+	a_src.h_sb = file_inode(a_src.h_file)->i_sb;
+	a_dst.h_sb = file_inode(a_dst.h_file)->i_sb;
+	if (unlikely(a_src.h_sb != a_dst.h_sb)) {
+		AuDbgFile(src);
+		AuDbgFile(dst);
+		goto out_file;
+	}
+
+	err = vfsub_copy_file_range(a_src.h_file, src_pos, a_dst.h_file,
+				    dst_pos, len, flags);
+
+out_file:
+	au_write_post(a_dst.inode, a_dst.h_file, &wpre, err);
+	fi_read_unlock(src);
+	au_read_post(a_src.inode, a_src.h_file);
+out_si:
+	si_read_unlock(a_dst.inode->i_sb);
+	inode_unlock(a_dst.inode);
+out:
+	return err;
+#undef a_src
+#undef a_dst
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * The locking order around current->mmap_sem.
+ * - in most and regular cases
+ *   file I/O syscall -- aufs_read() or something
+ *	-- si_rwsem for read -- mmap_sem
+ *	(Note that [fdi]i_rwsem are released before mmap_sem).
+ * - in mmap case
+ *   mmap(2) -- mmap_sem -- aufs_mmap() -- si_rwsem for read -- [fdi]i_rwsem
+ * This AB-BA order is definitely bad, but is not a problem since "si_rwsem for
+ * read" allows multiple processes to acquire it and [fdi]i_rwsem are not held
+ * in file I/O. Aufs needs to stop lockdep in aufs_mmap() though.
+ * It means that when aufs acquires si_rwsem for write, the process should never
+ * acquire mmap_sem.
+ *
+ * Actually aufs_iterate() holds [fdi]i_rwsem before mmap_sem, but this is not a
+ * problem either since any directory is not able to be mmap-ed.
+ * The similar scenario is applied to aufs_readlink() too.
+ */
+
+#if 0 /* stop calling security_file_mmap() */
+/* cf. linux/include/linux/mman.h: calc_vm_prot_bits() */
+#define AuConv_VM_PROT(f, b)	_calc_vm_trans(f, VM_##b, PROT_##b)
+
+static unsigned long au_arch_prot_conv(unsigned long flags)
+{
+	/* currently ppc64 only */
+#ifdef CONFIG_PPC64
+	/* cf. linux/arch/powerpc/include/asm/mman.h */
+	AuDebugOn(arch_calc_vm_prot_bits(-1) != VM_SAO);
+	return AuConv_VM_PROT(flags, SAO);
+#else
+	AuDebugOn(arch_calc_vm_prot_bits(-1));
+	return 0;
+#endif
+}
+
+static unsigned long au_prot_conv(unsigned long flags)
+{
+	return AuConv_VM_PROT(flags, READ)
+		| AuConv_VM_PROT(flags, WRITE)
+		| AuConv_VM_PROT(flags, EXEC)
+		| au_arch_prot_conv(flags);
+}
+
+/* cf. linux/include/linux/mman.h: calc_vm_flag_bits() */
+#define AuConv_VM_MAP(f, b)	_calc_vm_trans(f, VM_##b, MAP_##b)
+
+static unsigned long au_flag_conv(unsigned long flags)
+{
+	return AuConv_VM_MAP(flags, GROWSDOWN)
+		| AuConv_VM_MAP(flags, DENYWRITE)
+		| AuConv_VM_MAP(flags, LOCKED);
+}
+#endif
+
+static int aufs_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	int err;
+	const unsigned char wlock
+		= (file->f_mode & FMODE_WRITE) && (vma->vm_flags & VM_SHARED);
+	struct super_block *sb;
+	struct file *h_file;
+	struct inode *inode;
+
+	AuDbgVmRegion(file, vma);
+
+	inode = file_inode(file);
+	sb = inode->i_sb;
+	lockdep_off();
+	si_read_lock(sb, AuLock_NOPLMW);
+
+	h_file = au_write_pre(file, wlock, /*wpre*/NULL);
+	lockdep_on();
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	err = 0;
+	au_set_mmapped(file);
+	au_vm_file_reset(vma, h_file);
+	/*
+	 * we cannot call security_mmap_file() here since it may acquire
+	 * mmap_sem or i_mutex.
+	 *
+	 * err = security_mmap_file(h_file, au_prot_conv(vma->vm_flags),
+	 *			 au_flag_conv(vma->vm_flags));
+	 */
+	if (!err)
+		err = call_mmap(h_file, vma);
+	if (!err) {
+		au_vm_prfile_set(vma, file);
+		fsstack_copy_attr_atime(inode, file_inode(h_file));
+		goto out_fput; /* success */
+	}
+	au_unset_mmapped(file);
+	au_vm_file_reset(vma, file);
+
+out_fput:
+	lockdep_off();
+	ii_write_unlock(inode);
+	lockdep_on();
+	fput(h_file);
+out:
+	lockdep_off();
+	si_read_unlock(sb);
+	lockdep_on();
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_fsync_nondir(struct file *file, loff_t start, loff_t end,
+			     int datasync)
+{
+	int err;
+	struct au_write_pre wpre;
+	struct inode *inode;
+	struct file *h_file;
+
+	err = 0; /* -EBADF; */ /* posix? */
+	if (unlikely(!(file->f_mode & FMODE_WRITE)))
+		goto out;
+
+	inode = file_inode(file);
+	au_mtx_and_read_lock(inode);
+
+	wpre.lsc = 0;
+	h_file = au_write_pre(file, /*do_ready*/1, &wpre);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out_unlock;
+
+	err = vfsub_fsync(h_file, &h_file->f_path, datasync);
+	au_write_post(inode, h_file, &wpre, /*written*/0);
+
+out_unlock:
+	si_read_unlock(inode->i_sb);
+	inode_unlock(inode);
+out:
+	return err;
+}
+
+static int aufs_fasync(int fd, struct file *file, int flag)
+{
+	int err;
+	struct file *h_file;
+	struct super_block *sb;
+
+	sb = file->f_path.dentry->d_sb;
+	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	if (h_file->f_op->fasync)
+		err = h_file->f_op->fasync(fd, h_file, flag);
+	fput(h_file); /* instead of au_read_post() */
+
+out:
+	si_read_unlock(sb);
+	return err;
+}
+
+static int aufs_setfl(struct file *file, unsigned long arg)
+{
+	int err;
+	struct file *h_file;
+	struct super_block *sb;
+
+	sb = file->f_path.dentry->d_sb;
+	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out;
+
+	/* stop calling h_file->fasync */
+	arg |= vfsub_file_flags(file) & FASYNC;
+	err = setfl(/*unused fd*/-1, h_file, arg);
+	fput(h_file); /* instead of au_read_post() */
+
+out:
+	si_read_unlock(sb);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* no one supports this operation, currently */
+#if 0 /* reserved for future use */
+static ssize_t aufs_sendpage(struct file *file, struct page *page, int offset,
+			     size_t len, loff_t *pos, int more)
+{
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+const struct file_operations aufs_file_fop = {
+	.owner		= THIS_MODULE,
+
+	.llseek		= default_llseek,
+
+	.read_iter	= aufs_read_iter,
+	.write_iter	= aufs_write_iter,
+
+#ifdef CONFIG_AUFS_POLL
+	.poll		= aufs_poll,
+#endif
+	.unlocked_ioctl	= aufs_ioctl_nondir,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= aufs_compat_ioctl_nondir,
+#endif
+	.mmap		= aufs_mmap,
+	.open		= aufs_open_nondir,
+	.flush		= aufs_flush_nondir,
+	.release	= aufs_release_nondir,
+	.fsync		= aufs_fsync_nondir,
+	.fasync		= aufs_fasync,
+	/* .sendpage	= aufs_sendpage, */
+	.setfl		= aufs_setfl,
+	.splice_write	= aufs_splice_write,
+	.splice_read	= aufs_splice_read,
+#if 0 /* reserved for future use */
+	.aio_splice_write = aufs_aio_splice_write,
+	.aio_splice_read  = aufs_aio_splice_read,
+#endif
+	.fallocate	= aufs_fallocate,
+	.copy_file_range = aufs_copy_file_range
+};
diff -Naur --no-dereference a/fs/aufs/fsctx.c b/fs/aufs/fsctx.c
--- a/fs/aufs/fsctx.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/fsctx.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1242 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * fs context, aka new mount api
+ */
+
+#include <linux/fs_context.h>
+#include "aufs.h"
+
+struct au_fsctx_opts {
+	aufs_bindex_t bindex;
+	unsigned char skipped;
+	struct au_opt *opt, *opt_tail;
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+	struct au_opts opts;
+};
+
+/* stop extra interpretation of errno in mount(8), and strange error messages */
+static int cvt_err(int err)
+{
+	AuTraceErr(err);
+
+	switch (err) {
+	case -ENOENT:
+	case -ENOTDIR:
+	case -EEXIST:
+	case -EIO:
+		err = -EINVAL;
+	}
+	return err;
+}
+
+static int au_fsctx_reconfigure(struct fs_context *fc)
+{
+	int err, do_dx;
+	unsigned int mntflags;
+	struct dentry *root;
+	struct super_block *sb;
+	struct inode *inode;
+	struct au_fsctx_opts *a = fc->fs_private;
+
+	AuDbg("fc %p\n", fc);
+
+	root = fc->root;
+	sb = root->d_sb;
+	err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+	if (!err) {
+		di_write_lock_child(root);
+		err = au_opts_verify(sb, fc->sb_flags, /*pending*/0);
+		aufs_write_unlock(root);
+	}
+
+	inode = d_inode(root);
+	inode_lock(inode);
+	err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+	if (unlikely(err))
+		goto out;
+	di_write_lock_child(root);
+
+	/* au_opts_remount() may return an error */
+	err = au_opts_remount(sb, &a->opts);
+
+	if (au_ftest_opts(a->opts.flags, REFRESH))
+		au_remount_refresh(sb, au_ftest_opts(a->opts.flags,
+						     REFRESH_IDOP));
+
+	if (au_ftest_opts(a->opts.flags, REFRESH_DYAOP)) {
+		mntflags = au_mntflags(sb);
+		do_dx = !!au_opt_test(mntflags, DIO);
+		au_dy_arefresh(do_dx);
+	}
+
+	au_fhsm_wrote_all(sb, /*force*/1); /* ?? */
+	aufs_write_unlock(root);
+
+out:
+	inode_unlock(inode);
+	err = cvt_err(err);
+	AuTraceErr(err);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_fsctx_fill_super(struct super_block *sb, struct fs_context *fc)
+{
+	int err;
+	struct au_fsctx_opts *a = fc->fs_private;
+	struct au_sbinfo *sbinfo = a->sbinfo;
+	struct dentry *root;
+	struct inode *inode;
+
+	sbinfo->si_sb = sb;
+	sb->s_fs_info = sbinfo;
+	kobject_get(&sbinfo->si_kobj);
+
+	__si_write_lock(sb);
+	si_pid_set(sb);
+	au_sbilist_add(sb);
+
+	/* all timestamps always follow the ones on the branch */
+	sb->s_flags |= SB_NOATIME | SB_NODIRATIME;
+	sb->s_flags |= SB_I_VERSION; /* do we really need this? */
+	sb->s_op = &aufs_sop;
+	sb->s_d_op = &aufs_dop;
+	sb->s_magic = AUFS_SUPER_MAGIC;
+	sb->s_maxbytes = 0;
+	sb->s_stack_depth = 1;
+	au_export_init(sb);
+	au_xattr_init(sb);
+
+	err = au_alloc_root(sb);
+	if (unlikely(err)) {
+		si_write_unlock(sb);
+		goto out;
+	}
+	root = sb->s_root;
+	inode = d_inode(root);
+	ii_write_lock_parent(inode);
+	aufs_write_unlock(root);
+
+	/* lock vfs_inode first, then aufs. */
+	inode_lock(inode);
+	aufs_write_lock(root);
+	err = au_opts_mount(sb, &a->opts);
+	AuTraceErr(err);
+	if (!err && au_ftest_si(sbinfo, NO_DREVAL)) {
+		sb->s_d_op = &aufs_dop_noreval;
+		/* infofc(fc, "%ps", sb->s_d_op); */
+		pr_info("%ps\n", sb->s_d_op);
+		au_refresh_dop(root, /*force_reval*/0);
+		sbinfo->si_iop_array = aufs_iop_nogetattr;
+		au_refresh_iop(inode, /*force_getattr*/0);
+	}
+	aufs_write_unlock(root);
+	inode_unlock(inode);
+	if (!err)
+		goto out; /* success */
+
+	dput(root);
+	sb->s_root = NULL;
+
+out:
+	if (unlikely(err))
+		kobject_put(&sbinfo->si_kobj);
+	AuTraceErr(err);
+	err = cvt_err(err);
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_fsctx_get_tree(struct fs_context *fc)
+{
+	int err;
+
+	AuDbg("fc %p\n", fc);
+	err = get_tree_nodev(fc, au_fsctx_fill_super);
+
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_fsctx_dump(struct au_opts *opts)
+{
+#ifdef CONFIG_AUFS_DEBUG
+	/* reduce stack space */
+	union {
+		struct au_opt_add *add;
+		struct au_opt_del *del;
+		struct au_opt_mod *mod;
+		struct au_opt_xino *xino;
+		struct au_opt_xino_itrunc *xino_itrunc;
+		struct au_opt_wbr_create *create;
+	} u;
+	struct au_opt *opt;
+
+	opt = opts->opt;
+	while (opt->type != Opt_tail) {
+		switch (opt->type) {
+		case Opt_add:
+			u.add = &opt->add;
+			AuDbg("add {b%d, %s, 0x%x, %p}\n",
+				  u.add->bindex, u.add->pathname, u.add->perm,
+				  u.add->path.dentry);
+			break;
+		case Opt_del:
+			fallthrough;
+		case Opt_idel:
+			u.del = &opt->del;
+			AuDbg("del {%s, %p}\n",
+			      u.del->pathname, u.del->h_path.dentry);
+			break;
+		case Opt_mod:
+			fallthrough;
+		case Opt_imod:
+			u.mod = &opt->mod;
+			AuDbg("mod {%s, 0x%x, %p}\n",
+				  u.mod->path, u.mod->perm, u.mod->h_root);
+			break;
+		case Opt_append:
+			u.add = &opt->add;
+			AuDbg("append {b%d, %s, 0x%x, %p}\n",
+				  u.add->bindex, u.add->pathname, u.add->perm,
+				  u.add->path.dentry);
+			break;
+		case Opt_prepend:
+			u.add = &opt->add;
+			AuDbg("prepend {b%d, %s, 0x%x, %p}\n",
+				  u.add->bindex, u.add->pathname, u.add->perm,
+				  u.add->path.dentry);
+			break;
+
+		case Opt_dirwh:
+			AuDbg("dirwh %d\n", opt->dirwh);
+			break;
+		case Opt_rdcache:
+			AuDbg("rdcache %d\n", opt->rdcache);
+			break;
+		case Opt_rdblk:
+			AuDbg("rdblk %d\n", opt->rdblk);
+			break;
+		case Opt_rdhash:
+			AuDbg("rdhash %u\n", opt->rdhash);
+			break;
+
+		case Opt_xino:
+			u.xino = &opt->xino;
+			AuDbg("xino {%s %pD}\n", u.xino->path, u.xino->file);
+			break;
+
+#define au_fsctx_TF(name)					  \
+			case Opt_##name:			  \
+				if (opt->tf)			  \
+					AuLabel(name);		  \
+				else				  \
+					AuLabel(no##name);	  \
+				break;
+
+		/* simple true/false flag */
+		au_fsctx_TF(trunc_xino);
+		au_fsctx_TF(trunc_xib);
+		au_fsctx_TF(dirperm1);
+		au_fsctx_TF(plink);
+		au_fsctx_TF(shwh);
+		au_fsctx_TF(dio);
+		au_fsctx_TF(warn_perm);
+		au_fsctx_TF(verbose);
+		au_fsctx_TF(sum);
+		au_fsctx_TF(dirren);
+		au_fsctx_TF(acl);
+#undef au_fsctx_TF
+
+		case Opt_trunc_xino_path:
+			fallthrough;
+		case Opt_itrunc_xino:
+			u.xino_itrunc = &opt->xino_itrunc;
+			AuDbg("trunc_xino %d\n", u.xino_itrunc->bindex);
+			break;
+		case Opt_noxino:
+			AuLabel(noxino);
+			break;
+
+		case Opt_list_plink:
+			AuLabel(list_plink);
+			break;
+		case Opt_udba:
+			AuDbg("udba %d, %s\n",
+				  opt->udba, au_optstr_udba(opt->udba));
+			break;
+		case Opt_diropq_a:
+			AuLabel(diropq_a);
+			break;
+		case Opt_diropq_w:
+			AuLabel(diropq_w);
+			break;
+		case Opt_wsum:
+			AuLabel(wsum);
+			break;
+		case Opt_wbr_create:
+			u.create = &opt->wbr_create;
+			AuDbg("create %d, %s\n", u.create->wbr_create,
+				  au_optstr_wbr_create(u.create->wbr_create));
+			switch (u.create->wbr_create) {
+			case AuWbrCreate_MFSV:
+				fallthrough;
+			case AuWbrCreate_PMFSV:
+				AuDbg("%d sec\n", u.create->mfs_second);
+				break;
+			case AuWbrCreate_MFSRR:
+				fallthrough;
+			case AuWbrCreate_TDMFS:
+				AuDbg("%llu watermark\n",
+					  u.create->mfsrr_watermark);
+				break;
+			case AuWbrCreate_MFSRRV:
+				fallthrough;
+			case AuWbrCreate_TDMFSV:
+				fallthrough;
+			case AuWbrCreate_PMFSRRV:
+				AuDbg("%llu watermark, %d sec\n",
+					  u.create->mfsrr_watermark,
+					  u.create->mfs_second);
+				break;
+			}
+			break;
+		case Opt_wbr_copyup:
+			AuDbg("copyup %d, %s\n", opt->wbr_copyup,
+				  au_optstr_wbr_copyup(opt->wbr_copyup));
+			break;
+		case Opt_fhsm_sec:
+			AuDbg("fhsm_sec %u\n", opt->fhsm_second);
+			break;
+
+		default:
+			AuDbg("type %d\n", opt->type);
+			BUG();
+		}
+		opt++;
+	}
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * For conditionally compiled mount options.
+ * Instead of fsparam_flag_no(), use this macro to distinguish ignore_silent.
+ */
+#define au_ignore_flag(name, action)		\
+	fsparam_flag(name, action),		\
+	fsparam_flag("no" name, Opt_ignore_silent)
+
+const struct fs_parameter_spec aufs_fsctx_paramspec[] = {
+	fsparam_string("br", Opt_br),
+
+	/* "add=%d:%s" or "ins=%d:%s" */
+	fsparam_string("add", Opt_add),
+	fsparam_string("ins", Opt_add),
+	fsparam_path("append", Opt_append),
+	fsparam_path("prepend", Opt_prepend),
+
+	fsparam_path("del", Opt_del),
+	/* fsparam_s32("idel", Opt_idel), */
+	fsparam_path("mod", Opt_mod),
+	/* fsparam_string("imod", Opt_imod), */
+
+	fsparam_s32("dirwh", Opt_dirwh),
+
+	fsparam_path("xino", Opt_xino),
+	fsparam_flag("noxino", Opt_noxino),
+	fsparam_flag_no("trunc_xino", Opt_trunc_xino),
+	/* "trunc_xino_v=%d:%d" */
+	/* fsparam_string("trunc_xino_v", Opt_trunc_xino_v), */
+	fsparam_path("trunc_xino", Opt_trunc_xino_path),
+	fsparam_s32("itrunc_xino", Opt_itrunc_xino),
+	/* fsparam_path("zxino", Opt_zxino), */
+	fsparam_flag_no("trunc_xib", Opt_trunc_xib),
+
+#ifdef CONFIG_PROC_FS
+	fsparam_flag_no("plink", Opt_plink),
+#else
+	au_ignore_flag("plink", Opt_ignore),
+#endif
+
+#ifdef CONFIG_AUFS_DEBUG
+	fsparam_flag("list_plink", Opt_list_plink),
+#endif
+
+	fsparam_string("udba", Opt_udba),
+
+	fsparam_flag_no("dio", Opt_dio),
+
+#ifdef CONFIG_AUFS_DIRREN
+	fsparam_flag_no("dirren", Opt_dirren),
+#else
+	au_ignore_flag("dirren", Opt_ignore),
+#endif
+
+#ifdef CONFIG_AUFS_FHSM
+	fsparam_s32("fhsm_sec", Opt_fhsm_sec),
+#else
+	fsparam_s32("fhsm_sec", Opt_ignore),
+#endif
+
+	/* always | a | whiteouted | w */
+	fsparam_string("diropq", Opt_diropq),
+
+	fsparam_flag_no("warn_perm", Opt_warn_perm),
+
+#ifdef CONFIG_AUFS_SHWH
+	fsparam_flag_no("shwh", Opt_shwh),
+#else
+	au_ignore_flag("shwh", Opt_err),
+#endif
+
+	fsparam_flag_no("dirperm1", Opt_dirperm1),
+
+	fsparam_flag_no("verbose", Opt_verbose),
+	fsparam_flag("v", Opt_verbose),
+	fsparam_flag("quiet", Opt_noverbose),
+	fsparam_flag("q", Opt_noverbose),
+	/* user-space may handle this */
+	fsparam_flag("silent", Opt_noverbose),
+
+	fsparam_flag_no("sum", Opt_sum),
+	fsparam_flag("wsum", Opt_wsum),
+
+	fsparam_s32("rdcache", Opt_rdcache),
+	/* "def" or s32 */
+	fsparam_string("rdblk", Opt_rdblk),
+	/* "def" or s32 */
+	fsparam_string("rdhash", Opt_rdhash),
+
+	fsparam_string("create", Opt_wbr_create),
+	fsparam_string("create_policy", Opt_wbr_create),
+	fsparam_string("cpup", Opt_wbr_copyup),
+	fsparam_string("copyup", Opt_wbr_copyup),
+	fsparam_string("copyup_policy", Opt_wbr_copyup),
+
+	/* generic VFS flag */
+#ifdef CONFIG_FS_POSIX_ACL
+	fsparam_flag_no("acl", Opt_acl),
+#else
+	au_ignore_flag("acl", Opt_ignore),
+#endif
+
+	/* internal use for the scripts */
+	fsparam_string("si", Opt_ignore_silent),
+
+	/* obsoleted, keep them temporary */
+	fsparam_flag("nodlgt", Opt_ignore_silent),
+	fsparam_flag("clean_plink", Opt_ignore),
+	fsparam_string("dirs", Opt_br),
+	fsparam_u32("debug", Opt_ignore),
+	/* "whiteout" or "all" */
+	fsparam_string("delete", Opt_ignore),
+	fsparam_string("imap", Opt_ignore),
+
+	/* temporary workaround, due to old mount(8)? */
+	fsparam_flag("relatime", Opt_ignore_silent),
+
+	{}
+};
+
+static int au_fsctx_parse_do_add(struct fs_context *fc, struct au_opt *opt,
+				 char *brspec, size_t speclen,
+				 aufs_bindex_t bindex)
+{
+	int err;
+	char *p;
+
+	AuDbg("brspec %s\n", brspec);
+
+	err = -ENOMEM;
+	if (!speclen)
+		speclen = strlen(brspec);
+	/* will be freed by au_fsctx_free() */
+	p = kmemdup_nul(brspec, speclen, GFP_NOFS);
+	if (unlikely(!p)) {
+		errorfc(fc, "failed in %s", brspec);
+		goto out;
+	}
+	err = au_opt_add(opt, p, fc->sb_flags, bindex);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_fsctx_parse_br(struct fs_context *fc, char *brspec)
+{
+	int err;
+	char *p;
+	struct au_fsctx_opts *a = fc->fs_private;
+	struct au_opt *opt = a->opt;
+	aufs_bindex_t bindex = a->bindex;
+
+	AuDbg("brspec %s\n", brspec);
+
+	err = -EINVAL;
+	while ((p = strsep(&brspec, ":")) && *p) {
+		err = au_fsctx_parse_do_add(fc, opt, p, /*len*/0, bindex);
+		AuTraceErr(err);
+		if (unlikely(err))
+			break;
+		bindex++;
+		opt++;
+		if (unlikely(opt > a->opt_tail)) {
+			err = -E2BIG;
+			bindex--;
+			opt--;
+			break;
+		}
+		opt->type = Opt_tail;
+		a->skipped = 1;
+	}
+	a->bindex = bindex;
+	a->opt = opt;
+
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_fsctx_parse_add(struct fs_context *fc, char *addspec)
+{
+	int err, n;
+	char *p;
+	struct au_fsctx_opts *a = fc->fs_private;
+	struct au_opt *opt = a->opt;
+
+	err = -EINVAL;
+	p = strchr(addspec, ':');
+	if (unlikely(!p)) {
+		errorfc(fc, "bad arg in %s", addspec);
+		goto out;
+	}
+	*p++ = '\0';
+	err = kstrtoint(addspec, 0, &n);
+	if (unlikely(err)) {
+		errorfc(fc, "bad integer in %s", addspec);
+		goto out;
+	}
+	AuDbg("n %d\n", n);
+	err = au_fsctx_parse_do_add(fc, opt, p, /*len*/0, n);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_fsctx_parse_del(struct fs_context *fc, struct au_opt_del *del,
+			      struct fs_parameter *param)
+{
+	int err;
+
+	err = -ENOMEM;
+	/* will be freed by au_fsctx_free() */
+	del->pathname = kmemdup_nul(param->string, param->size, GFP_NOFS);
+	if (unlikely(!del->pathname))
+		goto out;
+	AuDbg("del %s\n", del->pathname);
+	err = vfsub_kern_path(del->pathname, AuOpt_LkupDirFlags, &del->h_path);
+	if (unlikely(err))
+		errorfc(fc, "lookup failed %s (%d)", del->pathname, err);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+#if 0 /* reserved for future use */
+static int au_fsctx_parse_idel(struct fs_context *fc, struct au_opt_del *del,
+			       aufs_bindex_t bindex)
+{
+	int err;
+	struct super_block *sb;
+	struct dentry *root;
+	struct au_fsctx_opts *a = fc->fs_private;
+
+	sb = a->sb;
+	AuDebugOn(!sb);
+
+	err = -EINVAL;
+	root = sb->s_root;
+	aufs_read_lock(root, AuLock_FLUSH);
+	if (bindex < 0 || au_sbbot(sb) < bindex) {
+		errorfc(fc, "out of bounds, %d", bindex);
+		goto out;
+	}
+
+	err = 0;
+	del->h_path.dentry = dget(au_h_dptr(root, bindex));
+	del->h_path.mnt = mntget(au_sbr_mnt(sb, bindex));
+
+out:
+	aufs_read_unlock(root, !AuLock_IR);
+	AuTraceErr(err);
+	return err;
+}
+#endif
+
+static int au_fsctx_parse_mod(struct fs_context *fc, struct au_opt_mod *mod,
+			      struct fs_parameter *param)
+{
+	int err;
+	struct path path;
+	char *p;
+
+	err = -ENOMEM;
+	/* will be freed by au_fsctx_free() */
+	mod->path = kmemdup_nul(param->string, param->size, GFP_NOFS);
+	if (unlikely(!mod->path))
+		goto out;
+
+	err = -EINVAL;
+	p = strchr(mod->path, '=');
+	if (unlikely(!p)) {
+		errorfc(fc, "no permission %s", mod->path);
+		goto out;
+	}
+
+	*p++ = 0;
+	err = vfsub_kern_path(mod->path, AuOpt_LkupDirFlags, &path);
+	if (unlikely(err)) {
+		errorfc(fc, "lookup failed %s (%d)", mod->path, err);
+		goto out;
+	}
+
+	mod->perm = au_br_perm_val(p);
+	AuDbg("mod path %s, perm 0x%x, %s", mod->path, mod->perm, p);
+	mod->h_root = dget(path.dentry);
+	path_put(&path);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+#if 0 /* reserved for future use */
+static int au_fsctx_parse_imod(struct fs_context *fc, struct au_opt_mod *mod,
+			       char *ibrspec)
+{
+	int err, n;
+	char *p;
+	struct super_block *sb;
+	struct dentry *root;
+	struct au_fsctx_opts *a = fc->fs_private;
+
+	sb = a->sb;
+	AuDebugOn(!sb);
+
+	err = -EINVAL;
+	p = strchr(ibrspec, ':');
+	if (unlikely(!p)) {
+		errorfc(fc, "no index, %s", ibrspec);
+		goto out;
+	}
+	*p++ = '\0';
+	err = kstrtoint(ibrspec, 0, &n);
+	if (unlikely(err)) {
+		errorfc(fc, "bad integer in %s", ibrspec);
+		goto out;
+	}
+	AuDbg("n %d\n", n);
+
+	root = sb->s_root;
+	aufs_read_lock(root, AuLock_FLUSH);
+	if (n < 0 || au_sbbot(sb) < n) {
+		errorfc(fc, "out of bounds, %d", bindex);
+		goto out_root;
+	}
+
+	err = 0;
+	mod->perm = au_br_perm_val(p);
+	AuDbg("mod path %s, perm 0x%x, %s\n",
+	      mod->path, mod->perm, p);
+	mod->h_root = dget(au_h_dptr(root, bindex));
+
+out_root:
+	aufs_read_unlock(root, !AuLock_IR);
+out:
+	AuTraceErr(err);
+	return err;
+}
+#endif
+
+static int au_fsctx_parse_xino(struct fs_context *fc,
+			       struct au_opt_xino *xino,
+			       struct fs_parameter *param)
+{
+	int err;
+	struct au_fsctx_opts *a = fc->fs_private;
+
+	err = -ENOMEM;
+	/* will be freed by au_opts_free() */
+	xino->path = kmemdup_nul(param->string, param->size, GFP_NOFS);
+	if (unlikely(!xino->path))
+		goto out;
+	AuDbg("path %s\n", xino->path);
+
+	xino->file = au_xino_create(a->sb, xino->path, /*silent*/0,
+				    /*wbrtop*/0);
+	err = PTR_ERR(xino->file);
+	if (IS_ERR(xino->file)) {
+		xino->file = NULL;
+		goto out;
+	}
+
+	err = 0;
+	if (unlikely(a->sb && xino->file->f_path.dentry->d_sb == a->sb)) {
+		err = -EINVAL;
+		errorfc(fc, "%s must be outside", xino->path);
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static
+int au_fsctx_parse_xino_itrunc_path(struct fs_context *fc,
+				    struct au_opt_xino_itrunc *xino_itrunc,
+				    char *pathname)
+{
+	int err;
+	aufs_bindex_t bbot, bindex;
+	struct path path;
+	struct dentry *root;
+	struct au_fsctx_opts *a = fc->fs_private;
+
+	AuDebugOn(!a->sb);
+
+	err = vfsub_kern_path(pathname, AuOpt_LkupDirFlags, &path);
+	if (unlikely(err)) {
+		errorfc(fc, "lookup failed %s (%d)", pathname, err);
+		goto out;
+	}
+
+	xino_itrunc->bindex = -1;
+	root = a->sb->s_root;
+	aufs_read_lock(root, AuLock_FLUSH);
+	bbot = au_sbbot(a->sb);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		if (au_h_dptr(root, bindex) == path.dentry) {
+			xino_itrunc->bindex = bindex;
+			break;
+		}
+	}
+	aufs_read_unlock(root, !AuLock_IR);
+	path_put(&path);
+
+	if (unlikely(xino_itrunc->bindex < 0)) {
+		err = -EINVAL;
+		errorfc(fc, "no such branch %s", pathname);
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_fsctx_parse_xino_itrunc(struct fs_context *fc,
+				      struct au_opt_xino_itrunc *xino_itrunc,
+				      unsigned int bindex)
+{
+	int err;
+	aufs_bindex_t bbot;
+	struct super_block *sb;
+	struct au_fsctx_opts *a = fc->fs_private;
+
+	sb = a->sb;
+	AuDebugOn(!sb);
+
+	err = 0;
+	si_noflush_read_lock(sb);
+	bbot = au_sbbot(sb);
+	si_read_unlock(sb);
+	if (bindex <= bbot)
+		xino_itrunc->bindex = bindex;
+	else {
+		err = -EINVAL;
+		errorfc(fc, "out of bounds, %u", bindex);
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_fsctx_parse_param(struct fs_context *fc, struct fs_parameter *param)
+{
+	int err, token;
+	struct fs_parse_result result;
+	struct au_fsctx_opts *a = fc->fs_private;
+	struct au_opt *opt = a->opt;
+
+	AuDbg("fc %p, param {key %s, string %s}\n",
+	      fc, param->key, param->string);
+	err = fs_parse(fc, aufs_fsctx_paramspec, param, &result);
+	if (unlikely(err < 0))
+		goto out;
+	token = err;
+	AuDbg("token %d, res{negated %d, uint64 %llu}\n",
+	      token, result.negated, result.uint_64);
+
+	err = -EINVAL;
+	a->skipped = 0;
+	switch (token) {
+	case Opt_br:
+		err = au_fsctx_parse_br(fc, param->string);
+		break;
+	case Opt_add:
+		err = au_fsctx_parse_add(fc, param->string);
+		break;
+	case Opt_append:
+		err = au_fsctx_parse_do_add(fc, opt, param->string, param->size,
+					    /*dummy bindex*/1);
+		break;
+	case Opt_prepend:
+		err = au_fsctx_parse_do_add(fc, opt, param->string, param->size,
+					    /*bindex*/0);
+		break;
+
+	case Opt_del:
+		err = au_fsctx_parse_del(fc, &opt->del, param);
+		break;
+#if 0 /* reserved for future use */
+	case Opt_idel:
+		if (!a->sb) {
+			err = 0;
+			a->skipped = 1;
+			break;
+		}
+		del->pathname = "(indexed)";
+		err = au_opts_parse_idel(fc, &opt->del, result.uint_32);
+		break;
+#endif
+
+	case Opt_mod:
+		err = au_fsctx_parse_mod(fc, &opt->mod, param);
+		break;
+#ifdef IMOD /* reserved for future use */
+	case Opt_imod:
+		if (!a->sb) {
+			err = 0;
+			a->skipped = 1;
+			break;
+		}
+		u.mod->path = "(indexed)";
+		err = au_opts_parse_imod(fc, &opt->mod, param->string);
+		break;
+#endif
+
+	case Opt_xino:
+		err = au_fsctx_parse_xino(fc, &opt->xino, param);
+		break;
+	case Opt_trunc_xino_path:
+		if (!a->sb) {
+			errorfc(fc, "no such branch %s", param->string);
+			break;
+		}
+		err = au_fsctx_parse_xino_itrunc_path(fc, &opt->xino_itrunc,
+						      param->string);
+		break;
+#if 0
+	case Opt_trunc_xino_v:
+		if (!a->sb) {
+			err = 0;
+			a->skipped = 1;
+			break;
+		}
+		err = au_fsctx_parse_xino_itrunc_path(fc, &opt->xino_itrunc,
+						      param->string);
+		break;
+#endif
+	case Opt_itrunc_xino:
+		if (!a->sb) {
+			errorfc(fc, "out of bounds %s", param->string);
+			break;
+		}
+		err = au_fsctx_parse_xino_itrunc(fc, &opt->xino_itrunc,
+						 result.int_32);
+		break;
+
+	case Opt_dirwh:
+		err = 0;
+		opt->dirwh = result.int_32;
+		break;
+
+	case Opt_rdcache:
+		if (unlikely(result.int_32 > AUFS_RDCACHE_MAX)) {
+			errorfc(fc, "rdcache must be smaller than %d",
+				AUFS_RDCACHE_MAX);
+			break;
+		}
+		err = 0;
+		opt->rdcache = result.int_32;
+		break;
+
+	case Opt_rdblk:
+		err = 0;
+		opt->rdblk = AUFS_RDBLK_DEF;
+		if (!strcmp(param->string, "def"))
+			break;
+
+		err = kstrtoint(param->string, 0, &result.int_32);
+		if (unlikely(err)) {
+			errorfc(fc, "bad value in %s", param->key);
+			break;
+		}
+		err = -EINVAL;
+		if (unlikely(result.int_32 < 0
+			     || result.int_32 > KMALLOC_MAX_SIZE)) {
+			errorfc(fc, "bad value in %s", param->key);
+			break;
+		}
+		if (unlikely(result.int_32 && result.int_32 < NAME_MAX)) {
+			errorfc(fc, "rdblk must be larger than %d", NAME_MAX);
+			break;
+		}
+		err = 0;
+		opt->rdblk = result.int_32;
+		break;
+
+	case Opt_rdhash:
+		err = 0;
+		opt->rdhash = AUFS_RDHASH_DEF;
+		if (!strcmp(param->string, "def"))
+			break;
+
+		err = kstrtoint(param->string, 0, &result.int_32);
+		if (unlikely(err)) {
+			errorfc(fc, "bad value in %s", param->key);
+			break;
+		}
+		/* how about zero? */
+		if (result.int_32 < 0
+		    || result.int_32 * sizeof(struct hlist_head)
+		    > KMALLOC_MAX_SIZE) {
+			err = -EINVAL;
+			errorfc(fc, "bad integer in %s", param->key);
+			break;
+		}
+		opt->rdhash = result.int_32;
+		break;
+
+	case Opt_diropq:
+		/*
+		 * As other options, fs/aufs/opts.c can handle these strings by
+		 * match_token().  But "diropq=" is deprecated now and will
+		 * never have other value.  So simple strcmp() is enough here.
+		 */
+		if (!strcmp(param->string, "a") ||
+		    !strcmp(param->string, "always")) {
+			err = 0;
+			opt->type = Opt_diropq_a;
+		} else if (!strcmp(param->string, "w") ||
+			   !strcmp(param->string, "whiteouted")) {
+			err = 0;
+			opt->type = Opt_diropq_w;
+		} else
+			errorfc(fc, "unknown value %s", param->string);
+		break;
+
+	case Opt_udba:
+		opt->udba = au_udba_val(param->string);
+		if (opt->udba >= 0)
+			err = 0;
+		else
+			errorf(fc, "wrong value, %s", param->string);
+		break;
+
+	case Opt_wbr_create:
+		opt->wbr_create.wbr_create
+			= au_wbr_create_val(param->string, &opt->wbr_create);
+		if (opt->wbr_create.wbr_create >= 0)
+			err = 0;
+		else
+			errorf(fc, "wrong value, %s", param->key);
+		break;
+
+	case Opt_wbr_copyup:
+		opt->wbr_copyup = au_wbr_copyup_val(param->string);
+		if (opt->wbr_copyup >= 0)
+			err = 0;
+		else
+			errorfc(fc, "wrong value, %s", param->key);
+		break;
+
+	case Opt_fhsm_sec:
+		if (unlikely(result.int_32 < 0)) {
+			errorfc(fc, "bad integer in %s\n", param->key);
+			break;
+		}
+		err = 0;
+		if (sysaufs_brs)
+			opt->fhsm_second = result.int_32;
+		else
+			warnfc(fc, "ignored %s %s", param->key, param->string);
+		break;
+
+	/* simple true/false flag */
+#define au_fsctx_TF(name)				\
+		case Opt_##name:			\
+			err = 0;			\
+			opt->tf = !result.negated;	\
+			break;
+	au_fsctx_TF(trunc_xino);
+	au_fsctx_TF(trunc_xib);
+	au_fsctx_TF(dirperm1);
+	au_fsctx_TF(plink);
+	au_fsctx_TF(shwh);
+	au_fsctx_TF(dio);
+	au_fsctx_TF(warn_perm);
+	au_fsctx_TF(verbose);
+	au_fsctx_TF(sum);
+	au_fsctx_TF(dirren);
+	au_fsctx_TF(acl);
+#undef au_fsctx_TF
+
+	case Opt_noverbose:
+		err = 0;
+		opt->type = Opt_verbose;
+		opt->tf = false;
+		break;
+
+	case Opt_noxino:
+		fallthrough;
+	case Opt_list_plink:
+		fallthrough;
+	case Opt_wsum:
+		err = 0;
+		break;
+
+	case Opt_ignore:
+		warnfc(fc, "ignored %s", param->key);
+		fallthrough;
+	case Opt_ignore_silent:
+		a->skipped = 1;
+		err = 0;
+		break;
+	default:
+		a->skipped = 1;
+		err = -ENOPARAM;
+		break;
+	}
+	if (unlikely(err))
+		goto out;
+	if (a->skipped)
+		goto out;
+
+	switch (token) {
+	case Opt_br:
+		fallthrough;
+	case Opt_noverbose:
+		fallthrough;
+	case Opt_diropq:
+		break;
+	default:
+		opt->type = token;
+		break;
+	}
+	opt++;
+	if (unlikely(opt > a->opt_tail)) {
+		err = -E2BIG;
+		opt--;
+	}
+	opt->type = Opt_tail;
+	a->opt = opt;
+
+out:
+	return err;
+}
+
+/*
+ * these options accept both 'name=val' and 'name:val' form.
+ * some accept optional '=' in its value.
+ * eg. br:/br1=rw:/br2=ro and br=/br1=rw:/br2=ro
+ */
+static inline unsigned int is_colonopt(char *str)
+{
+#define do_test(name)					\
+	if (!strncmp(str, name ":", sizeof(name)))	\
+		return sizeof(name) - 1;
+	do_test("br");
+	do_test("add");
+	do_test("ins");
+	do_test("append");
+	do_test("prepend");
+	do_test("del");
+	/* do_test("idel"); */
+	do_test("mod");
+	/* do_test("imod"); */
+#undef do_test
+
+	return 0;
+}
+
+static int au_fsctx_parse_monolithic(struct fs_context *fc, void *data)
+{
+	int err;
+	unsigned int u;
+	char *str;
+	struct au_fsctx_opts *a = fc->fs_private;
+
+	str = data;
+	AuDbg("str %s\n", str);
+	while (str) {
+		u = is_colonopt(str);
+		if (u)
+			str[u] = '=';
+		str = strchr(str, ',');
+		if (!str)
+			break;
+		str++;
+	}
+	str = data;
+	AuDbg("str %s\n", str);
+
+	err = generic_parse_monolithic(fc, str);
+	AuTraceErr(err);
+	au_fsctx_dump(&a->opts);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_fsctx_opts_free(struct au_opts *opts)
+{
+	struct au_opt *opt;
+
+	opt = opts->opt;
+	while (opt->type != Opt_tail) {
+		switch (opt->type) {
+		case Opt_add:
+			fallthrough;
+		case Opt_append:
+			fallthrough;
+		case Opt_prepend:
+			kfree(opt->add.pathname);
+			path_put(&opt->add.path);
+			break;
+		case Opt_del:
+			kfree(opt->del.pathname);
+			fallthrough;
+		case Opt_idel:
+			path_put(&opt->del.h_path);
+			break;
+		case Opt_mod:
+			kfree(opt->mod.path);
+			fallthrough;
+		case Opt_imod:
+			dput(opt->mod.h_root);
+			break;
+		case Opt_xino:
+			kfree(opt->xino.path);
+			fput(opt->xino.file);
+			break;
+		}
+		opt++;
+	}
+}
+
+static void au_fsctx_free(struct fs_context *fc)
+{
+	struct au_fsctx_opts *a = fc->fs_private;
+
+	/* fs_type=%p, root=%pD */
+	AuDbg("fc %p{sb_flags 0x%x, sb_flags_mask 0x%x, purpose %u\n",
+	      fc, fc->sb_flags, fc->sb_flags_mask, fc->purpose);
+
+	kobject_put(&a->sbinfo->si_kobj);
+	au_fsctx_opts_free(&a->opts);
+	free_page((unsigned long)a->opts.opt);
+	au_kfree_rcu(a);
+}
+
+static const struct fs_context_operations au_fsctx_ops = {
+	.free			= au_fsctx_free,
+	.parse_param		= au_fsctx_parse_param,
+	.parse_monolithic	= au_fsctx_parse_monolithic,
+	.get_tree		= au_fsctx_get_tree,
+	.reconfigure		= au_fsctx_reconfigure
+	/*
+	 * nfs4 requires ->dup()? No.
+	 * I don't know what is this ->dup() for.
+	 */
+};
+
+int aufs_fsctx_init(struct fs_context *fc)
+{
+	int err;
+	struct au_fsctx_opts *a;
+
+	/* fs_type=%p, root=%pD */
+	AuDbg("fc %p{sb_flags 0x%x, sb_flags_mask 0x%x, purpose %u\n",
+	      fc, fc->sb_flags, fc->sb_flags_mask, fc->purpose);
+
+	/* they will be freed by au_fsctx_free() */
+	err = -ENOMEM;
+	a = kzalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+	a->bindex = 0;
+	a->opts.opt = (void *)__get_free_page(GFP_NOFS);
+	if (unlikely(!a->opts.opt))
+		goto out_a;
+	a->opt = a->opts.opt;
+	a->opt->type = Opt_tail;
+	a->opts.max_opt = PAGE_SIZE / sizeof(*a->opts.opt);
+	a->opt_tail = a->opt + a->opts.max_opt - 1;
+	a->opts.sb_flags = fc->sb_flags;
+
+	a->sb = NULL;
+	if (fc->root) {
+		AuDebugOn(fc->purpose != FS_CONTEXT_FOR_RECONFIGURE);
+		a->opts.flags = AuOpts_REMOUNT;
+		a->sb = fc->root->d_sb;
+		a->sbinfo = au_sbi(a->sb);
+		kobject_get(&a->sbinfo->si_kobj);
+	} else {
+		a->sbinfo = au_si_alloc(a->sb);
+		AuDebugOn(!a->sbinfo);
+		err = PTR_ERR(a->sbinfo);
+		if (IS_ERR(a->sbinfo))
+			goto out_opt;
+		au_rw_write_unlock(&a->sbinfo->si_rwsem);
+	}
+
+	err = 0;
+	fc->fs_private = a;
+	fc->ops = &au_fsctx_ops;
+	goto out; /* success */
+
+out_opt:
+	free_page((unsigned long)a->opts.opt);
+out_a:
+	au_kfree_rcu(a);
+out:
+	AuTraceErr(err);
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/fstype.h b/fs/aufs/fstype.h
--- a/fs/aufs/fstype.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/fstype.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,401 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * judging filesystem type
+ */
+
+#ifndef __AUFS_FSTYPE_H__
+#define __AUFS_FSTYPE_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/magic.h>
+#include <linux/nfs_fs.h>
+#include <linux/romfs_fs.h>
+
+static inline int au_test_aufs(struct super_block *sb)
+{
+	return sb->s_magic == AUFS_SUPER_MAGIC;
+}
+
+static inline const char *au_sbtype(struct super_block *sb)
+{
+	return sb->s_type->name;
+}
+
+static inline int au_test_iso9660(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_ISO9660_FS)
+	return sb->s_magic == ISOFS_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_romfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_ROMFS_FS)
+	return sb->s_magic == ROMFS_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_cramfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_CRAMFS)
+	return sb->s_magic == CRAMFS_MAGIC;
+#endif
+	return 0;
+}
+
+static inline int au_test_nfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_NFS_FS)
+	return sb->s_magic == NFS_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_fuse(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_FUSE_FS)
+	return sb->s_magic == FUSE_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_xfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_XFS_FS)
+	return sb->s_magic == XFS_SB_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_tmpfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_TMPFS
+	return sb->s_magic == TMPFS_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_ecryptfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_ECRYPT_FS)
+	return !strcmp(au_sbtype(sb), "ecryptfs");
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_ramfs(struct super_block *sb)
+{
+	return sb->s_magic == RAMFS_MAGIC;
+}
+
+static inline int au_test_ubifs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_UBIFS_FS)
+	return sb->s_magic == UBIFS_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_procfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_PROC_FS
+	return sb->s_magic == PROC_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_sysfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_SYSFS
+	return sb->s_magic == SYSFS_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_configfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_CONFIGFS_FS)
+	return sb->s_magic == CONFIGFS_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_minix(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_MINIX_FS)
+	return sb->s_magic == MINIX3_SUPER_MAGIC
+		|| sb->s_magic == MINIX2_SUPER_MAGIC
+		|| sb->s_magic == MINIX2_SUPER_MAGIC2
+		|| sb->s_magic == MINIX_SUPER_MAGIC
+		|| sb->s_magic == MINIX_SUPER_MAGIC2;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_fat(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_FAT_FS)
+	return sb->s_magic == MSDOS_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_msdos(struct super_block *sb)
+{
+	return au_test_fat(sb);
+}
+
+static inline int au_test_vfat(struct super_block *sb)
+{
+	return au_test_fat(sb);
+}
+
+static inline int au_test_securityfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_SECURITYFS
+	return sb->s_magic == SECURITYFS_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_squashfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_SQUASHFS)
+	return sb->s_magic == SQUASHFS_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_btrfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_BTRFS_FS)
+	return sb->s_magic == BTRFS_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_xenfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_XENFS)
+	return sb->s_magic == XENFS_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_debugfs(struct super_block *sb __maybe_unused)
+{
+#ifdef CONFIG_DEBUG_FS
+	return sb->s_magic == DEBUGFS_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_nilfs(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_NILFS)
+	return sb->s_magic == NILFS_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+static inline int au_test_hfsplus(struct super_block *sb __maybe_unused)
+{
+#if IS_ENABLED(CONFIG_HFSPLUS_FS)
+	return sb->s_magic == HFSPLUS_SUPER_MAGIC;
+#else
+	return 0;
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * they can't be an aufs branch.
+ */
+static inline int au_test_fs_unsuppoted(struct super_block *sb)
+{
+	return
+#ifndef CONFIG_AUFS_BR_RAMFS
+		au_test_ramfs(sb) ||
+#endif
+		au_test_procfs(sb)
+		|| au_test_sysfs(sb)
+		|| au_test_configfs(sb)
+		|| au_test_debugfs(sb)
+		|| au_test_securityfs(sb)
+		|| au_test_xenfs(sb)
+		|| au_test_ecryptfs(sb)
+		/* || !strcmp(au_sbtype(sb), "unionfs") */
+		|| au_test_aufs(sb); /* will be supported in next version */
+}
+
+static inline int au_test_fs_remote(struct super_block *sb)
+{
+	return !au_test_tmpfs(sb)
+#ifdef CONFIG_AUFS_BR_RAMFS
+		&& !au_test_ramfs(sb)
+#endif
+		&& !(sb->s_type->fs_flags & FS_REQUIRES_DEV);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * Note: these functions (below) are created after reading ->getattr() in all
+ * filesystems under linux/fs. it means we have to do so in every update...
+ */
+
+/*
+ * some filesystems require getattr to refresh the inode attributes before
+ * referencing.
+ * in most cases, we can rely on the inode attribute in NFS (or every remote fs)
+ * and leave the work for d_revalidate()
+ */
+static inline int au_test_fs_refresh_iattr(struct super_block *sb)
+{
+	return au_test_nfs(sb)
+		|| au_test_fuse(sb)
+		/* || au_test_btrfs(sb) */	/* untested */
+		;
+}
+
+/*
+ * filesystems which don't maintain i_size or i_blocks.
+ */
+static inline int au_test_fs_bad_iattr_size(struct super_block *sb)
+{
+	return au_test_xfs(sb)
+		|| au_test_btrfs(sb)
+		|| au_test_ubifs(sb)
+		|| au_test_hfsplus(sb)	/* maintained, but incorrect */
+		/* || au_test_minix(sb) */	/* untested */
+		;
+}
+
+/*
+ * filesystems which don't store the correct value in some of their inode
+ * attributes.
+ */
+static inline int au_test_fs_bad_iattr(struct super_block *sb)
+{
+	return au_test_fs_bad_iattr_size(sb)
+		|| au_test_fat(sb)
+		|| au_test_msdos(sb)
+		|| au_test_vfat(sb);
+}
+
+/* they don't check i_nlink in link(2) */
+static inline int au_test_fs_no_limit_nlink(struct super_block *sb)
+{
+	return au_test_tmpfs(sb)
+#ifdef CONFIG_AUFS_BR_RAMFS
+		|| au_test_ramfs(sb)
+#endif
+		|| au_test_ubifs(sb)
+		|| au_test_hfsplus(sb);
+}
+
+/*
+ * filesystems which sets S_NOATIME and S_NOCMTIME.
+ */
+static inline int au_test_fs_notime(struct super_block *sb)
+{
+	return au_test_nfs(sb)
+		|| au_test_fuse(sb)
+		|| au_test_ubifs(sb)
+		;
+}
+
+/* temporary support for i#1 in cramfs */
+static inline int au_test_fs_unique_ino(struct inode *inode)
+{
+	if (au_test_cramfs(inode->i_sb))
+		return inode->i_ino != 1;
+	return 1;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * the filesystem where the xino files placed must support i/o after unlink and
+ * maintain i_size and i_blocks.
+ */
+static inline int au_test_fs_bad_xino(struct super_block *sb)
+{
+	return au_test_fs_remote(sb)
+		|| au_test_fs_bad_iattr_size(sb)
+		/* don't want unnecessary work for xino */
+		|| au_test_aufs(sb)
+		|| au_test_ecryptfs(sb)
+		|| au_test_nilfs(sb);
+}
+
+static inline int au_test_fs_trunc_xino(struct super_block *sb)
+{
+	return au_test_tmpfs(sb)
+		|| au_test_ramfs(sb);
+}
+
+/*
+ * test if the @sb is real-readonly.
+ */
+static inline int au_test_fs_rr(struct super_block *sb)
+{
+	return au_test_squashfs(sb)
+		|| au_test_iso9660(sb)
+		|| au_test_cramfs(sb)
+		|| au_test_romfs(sb);
+}
+
+/*
+ * test if the @inode is nfs with 'noacl' option
+ * NFS always sets SB_POSIXACL regardless its mount option 'noacl.'
+ */
+static inline int au_test_nfs_noacl(struct inode *inode)
+{
+	return au_test_nfs(inode->i_sb)
+		/* && IS_POSIXACL(inode) */
+		&& !nfs_server_capable(inode, NFS_CAP_ACLS);
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_FSTYPE_H__ */
diff -Naur --no-dereference a/fs/aufs/hbl.h b/fs/aufs/hbl.h
--- a/fs/aufs/hbl.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/hbl.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2017-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * helpers for hlist_bl.h
+ */
+
+#ifndef __AUFS_HBL_H__
+#define __AUFS_HBL_H__
+
+#ifdef __KERNEL__
+
+#include <linux/list_bl.h>
+
+static inline void au_hbl_add(struct hlist_bl_node *node,
+			      struct hlist_bl_head *hbl)
+{
+	hlist_bl_lock(hbl);
+	hlist_bl_add_head(node, hbl);
+	hlist_bl_unlock(hbl);
+}
+
+static inline void au_hbl_del(struct hlist_bl_node *node,
+			      struct hlist_bl_head *hbl)
+{
+	hlist_bl_lock(hbl);
+	hlist_bl_del(node);
+	hlist_bl_unlock(hbl);
+}
+
+#define au_hbl_for_each(pos, head)					\
+	for (pos = hlist_bl_first(head);				\
+	     pos;							\
+	     pos = pos->next)
+
+static inline unsigned long au_hbl_count(struct hlist_bl_head *hbl)
+{
+	unsigned long cnt;
+	struct hlist_bl_node *pos;
+
+	cnt = 0;
+	hlist_bl_lock(hbl);
+	au_hbl_for_each(pos, hbl)
+		cnt++;
+	hlist_bl_unlock(hbl);
+	return cnt;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_HBL_H__ */
diff -Naur --no-dereference a/fs/aufs/hfsnotify.c b/fs/aufs/hfsnotify.c
--- a/fs/aufs/hfsnotify.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/hfsnotify.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,288 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * fsnotify for the lower directories
+ */
+
+#include "aufs.h"
+
+/* FS_IN_IGNORED is unnecessary */
+static const __u32 AuHfsnMask = (FS_MOVED_TO | FS_MOVED_FROM | FS_DELETE
+				 | FS_CREATE | FS_EVENT_ON_CHILD);
+static DECLARE_WAIT_QUEUE_HEAD(au_hfsn_wq);
+static __cacheline_aligned_in_smp atomic64_t au_hfsn_ifree = ATOMIC64_INIT(0);
+
+static void au_hfsn_free_mark(struct fsnotify_mark *mark)
+{
+	struct au_hnotify *hn = container_of(mark, struct au_hnotify,
+					     hn_mark);
+	/* AuDbg("here\n"); */
+	au_cache_free_hnotify(hn);
+	smp_mb__before_atomic(); /* for atomic64_dec */
+	if (atomic64_dec_and_test(&au_hfsn_ifree))
+		wake_up(&au_hfsn_wq);
+}
+
+static int au_hfsn_alloc(struct au_hinode *hinode)
+{
+	int err;
+	struct au_hnotify *hn;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct fsnotify_mark *mark;
+	aufs_bindex_t bindex;
+
+	hn = hinode->hi_notify;
+	sb = hn->hn_aufs_inode->i_sb;
+	bindex = au_br_index(sb, hinode->hi_id);
+	br = au_sbr(sb, bindex);
+	AuDebugOn(!br->br_hfsn);
+
+	mark = &hn->hn_mark;
+	fsnotify_init_mark(mark, br->br_hfsn->hfsn_group);
+	mark->mask = AuHfsnMask;
+	/*
+	 * by udba rename or rmdir, aufs assign a new inode to the known
+	 * h_inode, so specify 1 to allow dups.
+	 */
+	lockdep_off();
+	err = fsnotify_add_inode_mark(mark, hinode->hi_inode, /*allow_dups*/1);
+	lockdep_on();
+
+	return err;
+}
+
+static int au_hfsn_free(struct au_hinode *hinode, struct au_hnotify *hn)
+{
+	struct fsnotify_mark *mark;
+	unsigned long long ull;
+	struct fsnotify_group *group;
+
+	ull = atomic64_inc_return(&au_hfsn_ifree);
+	BUG_ON(!ull);
+
+	mark = &hn->hn_mark;
+	spin_lock(&mark->lock);
+	group = mark->group;
+	fsnotify_get_group(group);
+	spin_unlock(&mark->lock);
+	lockdep_off();
+	fsnotify_destroy_mark(mark, group);
+	fsnotify_put_mark(mark);
+	fsnotify_put_group(group);
+	lockdep_on();
+
+	/* free hn by myself */
+	return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_hfsn_ctl(struct au_hinode *hinode, int do_set)
+{
+	struct fsnotify_mark *mark;
+
+	mark = &hinode->hi_notify->hn_mark;
+	spin_lock(&mark->lock);
+	if (do_set) {
+		AuDebugOn(mark->mask & AuHfsnMask);
+		mark->mask |= AuHfsnMask;
+	} else {
+		AuDebugOn(!(mark->mask & AuHfsnMask));
+		mark->mask &= ~AuHfsnMask;
+	}
+	spin_unlock(&mark->lock);
+	/* fsnotify_recalc_inode_mask(hinode->hi_inode); */
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* #define AuDbgHnotify */
+#ifdef AuDbgHnotify
+static char *au_hfsn_name(u32 mask)
+{
+#ifdef CONFIG_AUFS_DEBUG
+#define test_ret(flag)				\
+	do {					\
+		if (mask & flag)		\
+			return #flag;		\
+	} while (0)
+	test_ret(FS_ACCESS);
+	test_ret(FS_MODIFY);
+	test_ret(FS_ATTRIB);
+	test_ret(FS_CLOSE_WRITE);
+	test_ret(FS_CLOSE_NOWRITE);
+	test_ret(FS_OPEN);
+	test_ret(FS_MOVED_FROM);
+	test_ret(FS_MOVED_TO);
+	test_ret(FS_CREATE);
+	test_ret(FS_DELETE);
+	test_ret(FS_DELETE_SELF);
+	test_ret(FS_MOVE_SELF);
+	test_ret(FS_UNMOUNT);
+	test_ret(FS_Q_OVERFLOW);
+	test_ret(FS_IN_IGNORED);
+	test_ret(FS_ISDIR);
+	test_ret(FS_IN_ONESHOT);
+	test_ret(FS_EVENT_ON_CHILD);
+	return "";
+#undef test_ret
+#else
+	return "??";
+#endif
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static void au_hfsn_free_group(struct fsnotify_group *group)
+{
+	struct au_br_hfsnotify *hfsn = group->private;
+
+	/* AuDbg("here\n"); */
+	au_kfree_try_rcu(hfsn);
+}
+
+static int au_hfsn_handle_event(struct fsnotify_group *group,
+				u32 mask, const void *data, int data_type,
+				struct inode *dir,
+				const struct qstr *file_name, u32 cookie,
+				struct fsnotify_iter_info *iter_info)
+{
+	int err;
+	struct au_hnotify *hnotify;
+	struct inode *h_dir, *h_inode;
+	struct fsnotify_mark *inode_mark;
+
+	AuDebugOn(data_type != FSNOTIFY_EVENT_INODE);
+
+	err = 0;
+	/* if FS_UNMOUNT happens, there must be another bug */
+	AuDebugOn(mask & FS_UNMOUNT);
+	if (mask & (FS_IN_IGNORED | FS_UNMOUNT))
+		goto out;
+
+	h_dir = dir;
+	h_inode = NULL;
+#ifdef AuDbgHnotify
+	au_debug_on();
+	if (1 || h_child_qstr.len != sizeof(AUFS_XINO_FNAME) - 1
+	    || strncmp(h_child_qstr.name, AUFS_XINO_FNAME, h_child_qstr.len)) {
+		AuDbg("i%lu, mask 0x%x %s, hcname %.*s, hi%lu\n",
+		      h_dir->i_ino, mask, au_hfsn_name(mask),
+		      AuLNPair(&h_child_qstr), h_inode ? h_inode->i_ino : 0);
+		/* WARN_ON(1); */
+	}
+	au_debug_off();
+#endif
+
+	inode_mark = fsnotify_iter_inode_mark(iter_info);
+	AuDebugOn(!inode_mark);
+	hnotify = container_of(inode_mark, struct au_hnotify, hn_mark);
+	err = au_hnotify(h_dir, hnotify, mask, file_name, h_inode);
+
+out:
+	return err;
+}
+
+static struct fsnotify_ops au_hfsn_ops = {
+	.handle_event		= au_hfsn_handle_event,
+	.free_group_priv	= au_hfsn_free_group,
+	.free_mark		= au_hfsn_free_mark
+};
+
+/* ---------------------------------------------------------------------- */
+
+static void au_hfsn_fin_br(struct au_branch *br)
+{
+	struct au_br_hfsnotify *hfsn;
+
+	hfsn = br->br_hfsn;
+	if (hfsn) {
+		lockdep_off();
+		fsnotify_put_group(hfsn->hfsn_group);
+		lockdep_on();
+	}
+}
+
+static int au_hfsn_init_br(struct au_branch *br, int perm)
+{
+	int err;
+	struct fsnotify_group *group;
+	struct au_br_hfsnotify *hfsn;
+
+	err = 0;
+	br->br_hfsn = NULL;
+	if (!au_br_hnotifyable(perm))
+		goto out;
+
+	err = -ENOMEM;
+	hfsn = kmalloc(sizeof(*hfsn), GFP_NOFS);
+	if (unlikely(!hfsn))
+		goto out;
+
+	err = 0;
+	group = fsnotify_alloc_group(&au_hfsn_ops);
+	if (IS_ERR(group)) {
+		err = PTR_ERR(group);
+		pr_err("fsnotify_alloc_group() failed, %d\n", err);
+		goto out_hfsn;
+	}
+
+	group->private = hfsn;
+	hfsn->hfsn_group = group;
+	br->br_hfsn = hfsn;
+	goto out; /* success */
+
+out_hfsn:
+	au_kfree_try_rcu(hfsn);
+out:
+	return err;
+}
+
+static int au_hfsn_reset_br(unsigned int udba, struct au_branch *br, int perm)
+{
+	int err;
+
+	err = 0;
+	if (!br->br_hfsn)
+		err = au_hfsn_init_br(br, perm);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_hfsn_fin(void)
+{
+	AuDbg("au_hfsn_ifree %lld\n", (long long)atomic64_read(&au_hfsn_ifree));
+	wait_event(au_hfsn_wq, !atomic64_read(&au_hfsn_ifree));
+}
+
+const struct au_hnotify_op au_hnotify_op = {
+	.ctl		= au_hfsn_ctl,
+	.alloc		= au_hfsn_alloc,
+	.free		= au_hfsn_free,
+
+	.fin		= au_hfsn_fin,
+
+	.reset_br	= au_hfsn_reset_br,
+	.fin_br		= au_hfsn_fin_br,
+	.init_br	= au_hfsn_init_br
+};
diff -Naur --no-dereference a/fs/aufs/hfsplus.c b/fs/aufs/hfsplus.c
--- a/fs/aufs/hfsplus.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/hfsplus.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2010-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * special support for filesystems which acquires an inode mutex
+ * at final closing a file, eg, hfsplus.
+ *
+ * This trick is very simple and stupid, just to open the file before really
+ * necessary open to tell hfsplus that this is not the final closing.
+ * The caller should call au_h_open_pre() after acquiring the inode mutex,
+ * and au_h_open_post() after releasing it.
+ */
+
+#include "aufs.h"
+
+struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex,
+			   int force_wr)
+{
+	struct file *h_file;
+	struct dentry *h_dentry;
+
+	h_dentry = au_h_dptr(dentry, bindex);
+	AuDebugOn(!h_dentry);
+	AuDebugOn(d_is_negative(h_dentry));
+
+	h_file = NULL;
+	if (au_test_hfsplus(h_dentry->d_sb)
+	    && d_is_reg(h_dentry))
+		h_file = au_h_open(dentry, bindex,
+				   O_RDONLY | O_NOATIME | O_LARGEFILE,
+				   /*file*/NULL, force_wr);
+	return h_file;
+}
+
+void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex,
+		    struct file *h_file)
+{
+	struct au_branch *br;
+
+	if (h_file) {
+		fput(h_file);
+		br = au_sbr(dentry->d_sb, bindex);
+		au_lcnt_dec(&br->br_nfiles);
+	}
+}
diff -Naur --no-dereference a/fs/aufs/hnotify.c b/fs/aufs/hnotify.c
--- a/fs/aufs/hnotify.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/hnotify.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,715 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * abstraction to notify the direct changes on lower directories
+ */
+
+/* #include <linux/iversion.h> */
+#include "aufs.h"
+
+int au_hn_alloc(struct au_hinode *hinode, struct inode *inode)
+{
+	int err;
+	struct au_hnotify *hn;
+
+	err = -ENOMEM;
+	hn = au_cache_alloc_hnotify();
+	if (hn) {
+		hn->hn_aufs_inode = inode;
+		hinode->hi_notify = hn;
+		err = au_hnotify_op.alloc(hinode);
+		AuTraceErr(err);
+		if (unlikely(err)) {
+			hinode->hi_notify = NULL;
+			au_cache_free_hnotify(hn);
+			/*
+			 * The upper dir was removed by udba, but the same named
+			 * dir left. In this case, aufs assigns a new inode
+			 * number and set the monitor again.
+			 * For the lower dir, the old monitor is still left.
+			 */
+			if (err == -EEXIST)
+				err = 0;
+		}
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+void au_hn_free(struct au_hinode *hinode)
+{
+	struct au_hnotify *hn;
+
+	hn = hinode->hi_notify;
+	if (hn) {
+		hinode->hi_notify = NULL;
+		if (au_hnotify_op.free(hinode, hn))
+			au_cache_free_hnotify(hn);
+	}
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_hn_ctl(struct au_hinode *hinode, int do_set)
+{
+	if (hinode->hi_notify)
+		au_hnotify_op.ctl(hinode, do_set);
+}
+
+void au_hn_reset(struct inode *inode, unsigned int flags)
+{
+	aufs_bindex_t bindex, bbot;
+	struct inode *hi;
+	struct dentry *iwhdentry;
+
+	bbot = au_ibbot(inode);
+	for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) {
+		hi = au_h_iptr(inode, bindex);
+		if (!hi)
+			continue;
+
+		/* inode_lock_nested(hi, AuLsc_I_CHILD); */
+		iwhdentry = au_hi_wh(inode, bindex);
+		if (iwhdentry)
+			dget(iwhdentry);
+		au_igrab(hi);
+		au_set_h_iptr(inode, bindex, NULL, 0);
+		au_set_h_iptr(inode, bindex, au_igrab(hi),
+			      flags & ~AuHi_XINO);
+		iput(hi);
+		dput(iwhdentry);
+		/* inode_unlock(hi); */
+	}
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int hn_xino(struct inode *inode, struct inode *h_inode)
+{
+	int err;
+	aufs_bindex_t bindex, bbot, bfound, btop;
+	struct inode *h_i;
+
+	err = 0;
+	if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
+		pr_warn("branch root dir was changed\n");
+		goto out;
+	}
+
+	bfound = -1;
+	bbot = au_ibbot(inode);
+	btop = au_ibtop(inode);
+#if 0 /* reserved for future use */
+	if (bindex == bbot) {
+		/* keep this ino in rename case */
+		goto out;
+	}
+#endif
+	for (bindex = btop; bindex <= bbot; bindex++)
+		if (au_h_iptr(inode, bindex) == h_inode) {
+			bfound = bindex;
+			break;
+		}
+	if (bfound < 0)
+		goto out;
+
+	for (bindex = btop; bindex <= bbot; bindex++) {
+		h_i = au_h_iptr(inode, bindex);
+		if (!h_i)
+			continue;
+
+		err = au_xino_write(inode->i_sb, bindex, h_i->i_ino, /*ino*/0);
+		/* ignore this error */
+		/* bad action? */
+	}
+
+	/* children inode number will be broken */
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int hn_gen_tree(struct dentry *dentry)
+{
+	int err, i, j, ndentry;
+	struct au_dcsub_pages dpages;
+	struct au_dpage *dpage;
+	struct dentry **dentries;
+
+	err = au_dpages_init(&dpages, GFP_NOFS);
+	if (unlikely(err))
+		goto out;
+	err = au_dcsub_pages(&dpages, dentry, NULL, NULL);
+	if (unlikely(err))
+		goto out_dpages;
+
+	for (i = 0; i < dpages.ndpage; i++) {
+		dpage = dpages.dpages + i;
+		dentries = dpage->dentries;
+		ndentry = dpage->ndentry;
+		for (j = 0; j < ndentry; j++) {
+			struct dentry *d;
+
+			d = dentries[j];
+			if (IS_ROOT(d))
+				continue;
+
+			au_digen_dec(d);
+			if (d_really_is_positive(d))
+				/* todo: reset children xino?
+				   cached children only? */
+				au_iigen_dec(d_inode(d));
+		}
+	}
+
+out_dpages:
+	au_dpages_free(&dpages);
+out:
+	return err;
+}
+
+/*
+ * return 0 if processed.
+ */
+static int hn_gen_by_inode(char *name, unsigned int nlen, struct inode *inode,
+			   const unsigned int isdir)
+{
+	int err;
+	struct dentry *d;
+	struct qstr *dname;
+
+	err = 1;
+	if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
+		pr_warn("branch root dir was changed\n");
+		err = 0;
+		goto out;
+	}
+
+	if (!isdir) {
+		AuDebugOn(!name);
+		au_iigen_dec(inode);
+		spin_lock(&inode->i_lock);
+		hlist_for_each_entry(d, &inode->i_dentry, d_u.d_alias) {
+			spin_lock(&d->d_lock);
+			dname = &d->d_name;
+			if (dname->len != nlen
+			    && memcmp(dname->name, name, nlen)) {
+				spin_unlock(&d->d_lock);
+				continue;
+			}
+			err = 0;
+			au_digen_dec(d);
+			spin_unlock(&d->d_lock);
+			break;
+		}
+		spin_unlock(&inode->i_lock);
+	} else {
+		au_fset_si(au_sbi(inode->i_sb), FAILED_REFRESH_DIR);
+		d = d_find_any_alias(inode);
+		if (!d) {
+			au_iigen_dec(inode);
+			goto out;
+		}
+
+		spin_lock(&d->d_lock);
+		dname = &d->d_name;
+		if (dname->len == nlen && !memcmp(dname->name, name, nlen)) {
+			spin_unlock(&d->d_lock);
+			err = hn_gen_tree(d);
+			spin_lock(&d->d_lock);
+		}
+		spin_unlock(&d->d_lock);
+		dput(d);
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int hn_gen_by_name(struct dentry *dentry, const unsigned int isdir)
+{
+	int err;
+
+	if (IS_ROOT(dentry)) {
+		pr_warn("branch root dir was changed\n");
+		return 0;
+	}
+
+	err = 0;
+	if (!isdir) {
+		au_digen_dec(dentry);
+		if (d_really_is_positive(dentry))
+			au_iigen_dec(d_inode(dentry));
+	} else {
+		au_fset_si(au_sbi(dentry->d_sb), FAILED_REFRESH_DIR);
+		if (d_really_is_positive(dentry))
+			err = hn_gen_tree(dentry);
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* hnotify job flags */
+#define AuHnJob_XINO0		1
+#define AuHnJob_GEN		(1 << 1)
+#define AuHnJob_DIRENT		(1 << 2)
+#define AuHnJob_ISDIR		(1 << 3)
+#define AuHnJob_TRYXINO0	(1 << 4)
+#define AuHnJob_MNTPNT		(1 << 5)
+#define au_ftest_hnjob(flags, name)	((flags) & AuHnJob_##name)
+#define au_fset_hnjob(flags, name) \
+	do { (flags) |= AuHnJob_##name; } while (0)
+#define au_fclr_hnjob(flags, name) \
+	do { (flags) &= ~AuHnJob_##name; } while (0)
+
+enum {
+	AuHn_CHILD,
+	AuHn_PARENT,
+	AuHnLast
+};
+
+struct au_hnotify_args {
+	struct inode *h_dir, *dir, *h_child_inode;
+	u32 mask;
+	unsigned int flags[AuHnLast];
+	unsigned int h_child_nlen;
+	char h_child_name[];
+};
+
+struct hn_job_args {
+	unsigned int flags;
+	struct inode *inode, *h_inode, *dir, *h_dir;
+	struct dentry *dentry;
+	char *h_name;
+	int h_nlen;
+};
+
+static int hn_job(struct hn_job_args *a)
+{
+	const unsigned int isdir = au_ftest_hnjob(a->flags, ISDIR);
+	int e;
+
+	/* reset xino */
+	if (au_ftest_hnjob(a->flags, XINO0) && a->inode)
+		hn_xino(a->inode, a->h_inode); /* ignore this error */
+
+	if (au_ftest_hnjob(a->flags, TRYXINO0)
+	    && a->inode
+	    && a->h_inode) {
+		inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD);
+		if (!a->h_inode->i_nlink
+		    && !(a->h_inode->i_state & I_LINKABLE))
+			hn_xino(a->inode, a->h_inode); /* ignore this error */
+		inode_unlock_shared(a->h_inode);
+	}
+
+	/* make the generation obsolete */
+	if (au_ftest_hnjob(a->flags, GEN)) {
+		e = -1;
+		if (a->inode)
+			e = hn_gen_by_inode(a->h_name, a->h_nlen, a->inode,
+					      isdir);
+		if (e && a->dentry)
+			hn_gen_by_name(a->dentry, isdir);
+		/* ignore this error */
+	}
+
+	/* make dir entries obsolete */
+	if (au_ftest_hnjob(a->flags, DIRENT) && a->inode) {
+		struct au_vdir *vdir;
+
+		vdir = au_ivdir(a->inode);
+		if (vdir)
+			vdir->vd_jiffy = 0;
+		/* IMustLock(a->inode); */
+		/* inode_inc_iversion(a->inode); */
+	}
+
+	/* can do nothing but warn */
+	if (au_ftest_hnjob(a->flags, MNTPNT)
+	    && a->dentry
+	    && d_mountpoint(a->dentry))
+		pr_warn("mount-point %pd is removed or renamed\n", a->dentry);
+
+	return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *lookup_wlock_by_name(char *name, unsigned int nlen,
+					   struct inode *dir)
+{
+	struct dentry *dentry, *d, *parent;
+	struct qstr *dname;
+
+	parent = d_find_any_alias(dir);
+	if (!parent)
+		return NULL;
+
+	dentry = NULL;
+	spin_lock(&parent->d_lock);
+	list_for_each_entry(d, &parent->d_subdirs, d_child) {
+		/* AuDbg("%pd\n", d); */
+		spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
+		dname = &d->d_name;
+		if (dname->len != nlen || memcmp(dname->name, name, nlen))
+			goto cont_unlock;
+		if (au_di(d))
+			au_digen_dec(d);
+		else
+			goto cont_unlock;
+		if (au_dcount(d) > 0) {
+			dentry = dget_dlock(d);
+			spin_unlock(&d->d_lock);
+			break;
+		}
+
+cont_unlock:
+		spin_unlock(&d->d_lock);
+	}
+	spin_unlock(&parent->d_lock);
+	dput(parent);
+
+	if (dentry)
+		di_write_lock_child(dentry);
+
+	return dentry;
+}
+
+static struct inode *lookup_wlock_by_ino(struct super_block *sb,
+					 aufs_bindex_t bindex, ino_t h_ino)
+{
+	struct inode *inode;
+	ino_t ino;
+	int err;
+
+	inode = NULL;
+	err = au_xino_read(sb, bindex, h_ino, &ino);
+	if (!err && ino)
+		inode = ilookup(sb, ino);
+	if (!inode)
+		goto out;
+
+	if (unlikely(inode->i_ino == AUFS_ROOT_INO)) {
+		pr_warn("wrong root branch\n");
+		iput(inode);
+		inode = NULL;
+		goto out;
+	}
+
+	ii_write_lock_child(inode);
+
+out:
+	return inode;
+}
+
+static void au_hn_bh(void *_args)
+{
+	struct au_hnotify_args *a = _args;
+	struct super_block *sb;
+	aufs_bindex_t bindex, bbot, bfound;
+	unsigned char xino, try_iput;
+	int err;
+	struct inode *inode;
+	ino_t h_ino;
+	struct hn_job_args args;
+	struct dentry *dentry;
+	struct au_sbinfo *sbinfo;
+
+	AuDebugOn(!_args);
+	AuDebugOn(!a->h_dir);
+	AuDebugOn(!a->dir);
+	AuDebugOn(!a->mask);
+	AuDbg("mask 0x%x, i%lu, hi%lu, hci%lu\n",
+	      a->mask, a->dir->i_ino, a->h_dir->i_ino,
+	      a->h_child_inode ? a->h_child_inode->i_ino : 0);
+
+	inode = NULL;
+	dentry = NULL;
+	/*
+	 * do not lock a->dir->i_mutex here
+	 * because of d_revalidate() may cause a deadlock.
+	 */
+	sb = a->dir->i_sb;
+	AuDebugOn(!sb);
+	sbinfo = au_sbi(sb);
+	AuDebugOn(!sbinfo);
+	si_write_lock(sb, AuLock_NOPLMW);
+
+	if (au_opt_test(sbinfo->si_mntflags, DIRREN))
+		switch (a->mask & FS_EVENTS_POSS_ON_CHILD) {
+		case FS_MOVED_FROM:
+		case FS_MOVED_TO:
+			AuWarn1("DIRREN with UDBA may not work correctly "
+				"for the direct rename(2)\n");
+		}
+
+	ii_read_lock_parent(a->dir);
+	bfound = -1;
+	bbot = au_ibbot(a->dir);
+	for (bindex = au_ibtop(a->dir); bindex <= bbot; bindex++)
+		if (au_h_iptr(a->dir, bindex) == a->h_dir) {
+			bfound = bindex;
+			break;
+		}
+	ii_read_unlock(a->dir);
+	if (unlikely(bfound < 0))
+		goto out;
+
+	xino = !!au_opt_test(au_mntflags(sb), XINO);
+	h_ino = 0;
+	if (a->h_child_inode)
+		h_ino = a->h_child_inode->i_ino;
+
+	if (a->h_child_nlen
+	    && (au_ftest_hnjob(a->flags[AuHn_CHILD], GEN)
+		|| au_ftest_hnjob(a->flags[AuHn_CHILD], MNTPNT)))
+		dentry = lookup_wlock_by_name(a->h_child_name, a->h_child_nlen,
+					      a->dir);
+	try_iput = 0;
+	if (dentry && d_really_is_positive(dentry))
+		inode = d_inode(dentry);
+	if (xino && !inode && h_ino
+	    && (au_ftest_hnjob(a->flags[AuHn_CHILD], XINO0)
+		|| au_ftest_hnjob(a->flags[AuHn_CHILD], TRYXINO0)
+		|| au_ftest_hnjob(a->flags[AuHn_CHILD], GEN))) {
+		inode = lookup_wlock_by_ino(sb, bfound, h_ino);
+		try_iput = 1;
+	}
+
+	args.flags = a->flags[AuHn_CHILD];
+	args.dentry = dentry;
+	args.inode = inode;
+	args.h_inode = a->h_child_inode;
+	args.dir = a->dir;
+	args.h_dir = a->h_dir;
+	args.h_name = a->h_child_name;
+	args.h_nlen = a->h_child_nlen;
+	err = hn_job(&args);
+	if (dentry) {
+		if (au_di(dentry))
+			di_write_unlock(dentry);
+		dput(dentry);
+	}
+	if (inode && try_iput) {
+		ii_write_unlock(inode);
+		iput(inode);
+	}
+
+	ii_write_lock_parent(a->dir);
+	args.flags = a->flags[AuHn_PARENT];
+	args.dentry = NULL;
+	args.inode = a->dir;
+	args.h_inode = a->h_dir;
+	args.dir = NULL;
+	args.h_dir = NULL;
+	args.h_name = NULL;
+	args.h_nlen = 0;
+	err = hn_job(&args);
+	ii_write_unlock(a->dir);
+
+out:
+	iput(a->h_child_inode);
+	iput(a->h_dir);
+	iput(a->dir);
+	si_write_unlock(sb);
+	au_nwt_done(&sbinfo->si_nowait);
+	au_kfree_rcu(a);
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask,
+	       const struct qstr *h_child_qstr, struct inode *h_child_inode)
+{
+	int err, len;
+	unsigned int flags[AuHnLast], f;
+	unsigned char isdir, isroot, wh;
+	struct inode *dir;
+	struct au_hnotify_args *args;
+	char *p, *h_child_name;
+
+	err = 0;
+	AuDebugOn(!hnotify || !hnotify->hn_aufs_inode);
+	dir = igrab(hnotify->hn_aufs_inode);
+	if (!dir)
+		goto out;
+
+	isroot = (dir->i_ino == AUFS_ROOT_INO);
+	wh = 0;
+	h_child_name = (void *)h_child_qstr->name;
+	len = h_child_qstr->len;
+	if (h_child_name) {
+		if (len > AUFS_WH_PFX_LEN
+		    && !memcmp(h_child_name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
+			h_child_name += AUFS_WH_PFX_LEN;
+			len -= AUFS_WH_PFX_LEN;
+			wh = 1;
+		}
+	}
+
+	isdir = 0;
+	if (h_child_inode)
+		isdir = !!S_ISDIR(h_child_inode->i_mode);
+	flags[AuHn_PARENT] = AuHnJob_ISDIR;
+	flags[AuHn_CHILD] = 0;
+	if (isdir)
+		flags[AuHn_CHILD] = AuHnJob_ISDIR;
+	au_fset_hnjob(flags[AuHn_PARENT], DIRENT);
+	au_fset_hnjob(flags[AuHn_CHILD], GEN);
+	switch (mask & ALL_FSNOTIFY_DIRENT_EVENTS) {
+	case FS_MOVED_FROM:
+	case FS_MOVED_TO:
+		au_fset_hnjob(flags[AuHn_CHILD], XINO0);
+		au_fset_hnjob(flags[AuHn_CHILD], MNTPNT);
+		fallthrough;
+	case FS_CREATE:
+		AuDebugOn(!h_child_name);
+		break;
+
+	case FS_DELETE:
+		/*
+		 * aufs never be able to get this child inode.
+		 * revalidation should be in d_revalidate()
+		 * by checking i_nlink, i_generation or d_unhashed().
+		 */
+		AuDebugOn(!h_child_name);
+		au_fset_hnjob(flags[AuHn_CHILD], TRYXINO0);
+		au_fset_hnjob(flags[AuHn_CHILD], MNTPNT);
+		break;
+
+	default:
+		AuDebugOn(1);
+	}
+
+	if (wh)
+		h_child_inode = NULL;
+
+	err = -ENOMEM;
+	/* iput() and kfree() will be called in au_hnotify() */
+	args = kmalloc(sizeof(*args) + len + 1, GFP_NOFS);
+	if (unlikely(!args)) {
+		AuErr1("no memory\n");
+		iput(dir);
+		goto out;
+	}
+	args->flags[AuHn_PARENT] = flags[AuHn_PARENT];
+	args->flags[AuHn_CHILD] = flags[AuHn_CHILD];
+	args->mask = mask;
+	args->dir = dir;
+	args->h_dir = igrab(h_dir);
+	if (h_child_inode)
+		h_child_inode = igrab(h_child_inode); /* can be NULL */
+	args->h_child_inode = h_child_inode;
+	args->h_child_nlen = len;
+	if (len) {
+		p = (void *)args;
+		p += sizeof(*args);
+		memcpy(p, h_child_name, len);
+		p[len] = 0;
+	}
+
+	/* NFS fires the event for silly-renamed one from kworker */
+	f = 0;
+	if (!dir->i_nlink
+	    || (au_test_nfs(h_dir->i_sb) && (mask & FS_DELETE)))
+		f = AuWkq_NEST;
+	err = au_wkq_nowait(au_hn_bh, args, dir->i_sb, f);
+	if (unlikely(err)) {
+		pr_err("wkq %d\n", err);
+		iput(args->h_child_inode);
+		iput(args->h_dir);
+		iput(args->dir);
+		au_kfree_rcu(args);
+	}
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm)
+{
+	int err;
+
+	AuDebugOn(!(udba & AuOptMask_UDBA));
+
+	err = 0;
+	if (au_hnotify_op.reset_br)
+		err = au_hnotify_op.reset_br(udba, br, perm);
+
+	return err;
+}
+
+int au_hnotify_init_br(struct au_branch *br, int perm)
+{
+	int err;
+
+	err = 0;
+	if (au_hnotify_op.init_br)
+		err = au_hnotify_op.init_br(br, perm);
+
+	return err;
+}
+
+void au_hnotify_fin_br(struct au_branch *br)
+{
+	if (au_hnotify_op.fin_br)
+		au_hnotify_op.fin_br(br);
+}
+
+static void au_hn_destroy_cache(void)
+{
+	kmem_cache_destroy(au_cache[AuCache_HNOTIFY]);
+	au_cache[AuCache_HNOTIFY] = NULL;
+}
+
+int __init au_hnotify_init(void)
+{
+	int err;
+
+	err = -ENOMEM;
+	au_cache[AuCache_HNOTIFY] = AuCache(au_hnotify);
+	if (au_cache[AuCache_HNOTIFY]) {
+		err = 0;
+		if (au_hnotify_op.init)
+			err = au_hnotify_op.init();
+		if (unlikely(err))
+			au_hn_destroy_cache();
+	}
+	AuTraceErr(err);
+	return err;
+}
+
+void au_hnotify_fin(void)
+{
+	if (au_hnotify_op.fin)
+		au_hnotify_op.fin();
+
+	/* cf. au_cache_fin() */
+	if (au_cache[AuCache_HNOTIFY])
+		au_hn_destroy_cache();
+}
diff -Naur --no-dereference a/fs/aufs/iinfo.c b/fs/aufs/iinfo.c
--- a/fs/aufs/iinfo.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/iinfo.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode private data
+ */
+
+#include "aufs.h"
+
+struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex)
+{
+	struct inode *h_inode;
+	struct au_hinode *hinode;
+
+	IiMustAnyLock(inode);
+
+	hinode = au_hinode(au_ii(inode), bindex);
+	h_inode = hinode->hi_inode;
+	AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0);
+	return h_inode;
+}
+
+/* todo: hard/soft set? */
+void au_hiput(struct au_hinode *hinode)
+{
+	au_hn_free(hinode);
+	dput(hinode->hi_whdentry);
+	iput(hinode->hi_inode);
+}
+
+unsigned int au_hi_flags(struct inode *inode, int isdir)
+{
+	unsigned int flags;
+	const unsigned int mnt_flags = au_mntflags(inode->i_sb);
+
+	flags = 0;
+	if (au_opt_test(mnt_flags, XINO))
+		au_fset_hi(flags, XINO);
+	if (isdir && au_opt_test(mnt_flags, UDBA_HNOTIFY))
+		au_fset_hi(flags, HNOTIFY);
+	return flags;
+}
+
+void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex,
+		   struct inode *h_inode, unsigned int flags)
+{
+	struct au_hinode *hinode;
+	struct inode *hi;
+	struct au_iinfo *iinfo = au_ii(inode);
+
+	IiMustWriteLock(inode);
+
+	hinode = au_hinode(iinfo, bindex);
+	hi = hinode->hi_inode;
+	AuDebugOn(h_inode && atomic_read(&h_inode->i_count) <= 0);
+
+	if (hi)
+		au_hiput(hinode);
+	hinode->hi_inode = h_inode;
+	if (h_inode) {
+		int err;
+		struct super_block *sb = inode->i_sb;
+		struct au_branch *br;
+
+		AuDebugOn(inode->i_mode
+			  && (h_inode->i_mode & S_IFMT)
+			  != (inode->i_mode & S_IFMT));
+		if (bindex == iinfo->ii_btop)
+			au_cpup_igen(inode, h_inode);
+		br = au_sbr(sb, bindex);
+		hinode->hi_id = br->br_id;
+		if (au_ftest_hi(flags, XINO)) {
+			err = au_xino_write(sb, bindex, h_inode->i_ino,
+					    inode->i_ino);
+			if (unlikely(err))
+				AuIOErr1("failed au_xino_write() %d\n", err);
+		}
+
+		if (au_ftest_hi(flags, HNOTIFY)
+		    && au_br_hnotifyable(br->br_perm)) {
+			err = au_hn_alloc(hinode, inode);
+			if (unlikely(err))
+				AuIOErr1("au_hn_alloc() %d\n", err);
+		}
+	}
+}
+
+void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex,
+		  struct dentry *h_wh)
+{
+	struct au_hinode *hinode;
+
+	IiMustWriteLock(inode);
+
+	hinode = au_hinode(au_ii(inode), bindex);
+	AuDebugOn(hinode->hi_whdentry);
+	hinode->hi_whdentry = h_wh;
+}
+
+void au_update_iigen(struct inode *inode, int half)
+{
+	struct au_iinfo *iinfo;
+	struct au_iigen *iigen;
+	unsigned int sigen;
+
+	sigen = au_sigen(inode->i_sb);
+	iinfo = au_ii(inode);
+	iigen = &iinfo->ii_generation;
+	spin_lock(&iigen->ig_spin);
+	iigen->ig_generation = sigen;
+	if (half)
+		au_ig_fset(iigen->ig_flags, HALF_REFRESHED);
+	else
+		au_ig_fclr(iigen->ig_flags, HALF_REFRESHED);
+	spin_unlock(&iigen->ig_spin);
+}
+
+/* it may be called at remount time, too */
+void au_update_ibrange(struct inode *inode, int do_put_zero)
+{
+	struct au_iinfo *iinfo;
+	aufs_bindex_t bindex, bbot;
+
+	AuDebugOn(au_is_bad_inode(inode));
+	IiMustWriteLock(inode);
+
+	iinfo = au_ii(inode);
+	if (do_put_zero && iinfo->ii_btop >= 0) {
+		for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot;
+		     bindex++) {
+			struct inode *h_i;
+
+			h_i = au_hinode(iinfo, bindex)->hi_inode;
+			if (h_i
+			    && !h_i->i_nlink
+			    && !(h_i->i_state & I_LINKABLE))
+				au_set_h_iptr(inode, bindex, NULL, 0);
+		}
+	}
+
+	iinfo->ii_btop = -1;
+	iinfo->ii_bbot = -1;
+	bbot = au_sbbot(inode->i_sb);
+	for (bindex = 0; bindex <= bbot; bindex++)
+		if (au_hinode(iinfo, bindex)->hi_inode) {
+			iinfo->ii_btop = bindex;
+			break;
+		}
+	if (iinfo->ii_btop >= 0)
+		for (bindex = bbot; bindex >= iinfo->ii_btop; bindex--)
+			if (au_hinode(iinfo, bindex)->hi_inode) {
+				iinfo->ii_bbot = bindex;
+				break;
+			}
+	AuDebugOn(iinfo->ii_btop > iinfo->ii_bbot);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_icntnr_init_once(void *_c)
+{
+	struct au_icntnr *c = _c;
+	struct au_iinfo *iinfo = &c->iinfo;
+
+	spin_lock_init(&iinfo->ii_generation.ig_spin);
+	au_rw_init(&iinfo->ii_rwsem);
+	inode_init_once(&c->vfs_inode);
+}
+
+void au_hinode_init(struct au_hinode *hinode)
+{
+	hinode->hi_inode = NULL;
+	hinode->hi_id = -1;
+	au_hn_init(hinode);
+	hinode->hi_whdentry = NULL;
+}
+
+int au_iinfo_init(struct inode *inode)
+{
+	struct au_iinfo *iinfo;
+	struct super_block *sb;
+	struct au_hinode *hi;
+	int nbr, i;
+
+	sb = inode->i_sb;
+	iinfo = &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo);
+	nbr = au_sbbot(sb) + 1;
+	if (unlikely(nbr <= 0))
+		nbr = 1;
+	hi = kmalloc_array(nbr, sizeof(*iinfo->ii_hinode), GFP_NOFS);
+	if (hi) {
+		au_lcnt_inc(&au_sbi(sb)->si_ninodes);
+
+		iinfo->ii_hinode = hi;
+		for (i = 0; i < nbr; i++, hi++)
+			au_hinode_init(hi);
+
+		iinfo->ii_generation.ig_generation = au_sigen(sb);
+		iinfo->ii_btop = -1;
+		iinfo->ii_bbot = -1;
+		iinfo->ii_vdir = NULL;
+		return 0;
+	}
+	return -ENOMEM;
+}
+
+int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink)
+{
+	int err, i;
+	struct au_hinode *hip;
+
+	AuRwMustWriteLock(&iinfo->ii_rwsem);
+
+	err = -ENOMEM;
+	hip = au_krealloc(iinfo->ii_hinode, sizeof(*hip) * nbr, GFP_NOFS,
+			  may_shrink);
+	if (hip) {
+		iinfo->ii_hinode = hip;
+		i = iinfo->ii_bbot + 1;
+		hip += i;
+		for (; i < nbr; i++, hip++)
+			au_hinode_init(hip);
+		err = 0;
+	}
+
+	return err;
+}
+
+void au_iinfo_fin(struct inode *inode)
+{
+	struct au_iinfo *iinfo;
+	struct au_hinode *hi;
+	struct super_block *sb;
+	aufs_bindex_t bindex, bbot;
+	const unsigned char unlinked = !inode->i_nlink;
+
+	AuDebugOn(au_is_bad_inode(inode));
+
+	sb = inode->i_sb;
+	au_lcnt_dec(&au_sbi(sb)->si_ninodes);
+	if (si_pid_test(sb))
+		au_xino_delete_inode(inode, unlinked);
+	else {
+		/*
+		 * it is safe to hide the dependency between sbinfo and
+		 * sb->s_umount.
+		 */
+		lockdep_off();
+		si_noflush_read_lock(sb);
+		au_xino_delete_inode(inode, unlinked);
+		si_read_unlock(sb);
+		lockdep_on();
+	}
+
+	iinfo = au_ii(inode);
+	if (iinfo->ii_vdir)
+		au_vdir_free(iinfo->ii_vdir);
+
+	bindex = iinfo->ii_btop;
+	if (bindex >= 0) {
+		hi = au_hinode(iinfo, bindex);
+		bbot = iinfo->ii_bbot;
+		while (bindex++ <= bbot) {
+			if (hi->hi_inode)
+				au_hiput(hi);
+			hi++;
+		}
+	}
+	au_kfree_rcu(iinfo->ii_hinode);
+	AuRwDestroy(&iinfo->ii_rwsem);
+}
diff -Naur --no-dereference a/fs/aufs/inode.c b/fs/aufs/inode.c
--- a/fs/aufs/inode.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/inode.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,531 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode functions
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+struct inode *au_igrab(struct inode *inode)
+{
+	if (inode) {
+		AuDebugOn(!atomic_read(&inode->i_count));
+		ihold(inode);
+	}
+	return inode;
+}
+
+static void au_refresh_hinode_attr(struct inode *inode, int do_version)
+{
+	au_cpup_attr_all(inode, /*force*/0);
+	au_update_iigen(inode, /*half*/1);
+	if (do_version)
+		inode_inc_iversion(inode);
+}
+
+static int au_ii_refresh(struct inode *inode, int *update)
+{
+	int err, e, nbr;
+	umode_t type;
+	aufs_bindex_t bindex, new_bindex;
+	struct super_block *sb;
+	struct au_iinfo *iinfo;
+	struct au_hinode *p, *q, tmp;
+
+	AuDebugOn(au_is_bad_inode(inode));
+	IiMustWriteLock(inode);
+
+	*update = 0;
+	sb = inode->i_sb;
+	nbr = au_sbbot(sb) + 1;
+	type = inode->i_mode & S_IFMT;
+	iinfo = au_ii(inode);
+	err = au_hinode_realloc(iinfo, nbr, /*may_shrink*/0);
+	if (unlikely(err))
+		goto out;
+
+	AuDebugOn(iinfo->ii_btop < 0);
+	p = au_hinode(iinfo, iinfo->ii_btop);
+	for (bindex = iinfo->ii_btop; bindex <= iinfo->ii_bbot;
+	     bindex++, p++) {
+		if (!p->hi_inode)
+			continue;
+
+		AuDebugOn(type != (p->hi_inode->i_mode & S_IFMT));
+		new_bindex = au_br_index(sb, p->hi_id);
+		if (new_bindex == bindex)
+			continue;
+
+		if (new_bindex < 0) {
+			*update = 1;
+			au_hiput(p);
+			p->hi_inode = NULL;
+			continue;
+		}
+
+		if (new_bindex < iinfo->ii_btop)
+			iinfo->ii_btop = new_bindex;
+		if (iinfo->ii_bbot < new_bindex)
+			iinfo->ii_bbot = new_bindex;
+		/* swap two lower inode, and loop again */
+		q = au_hinode(iinfo, new_bindex);
+		tmp = *q;
+		*q = *p;
+		*p = tmp;
+		if (tmp.hi_inode) {
+			bindex--;
+			p--;
+		}
+	}
+	au_update_ibrange(inode, /*do_put_zero*/0);
+	au_hinode_realloc(iinfo, nbr, /*may_shrink*/1); /* harmless if err */
+	e = au_dy_irefresh(inode);
+	if (unlikely(e && !err))
+		err = e;
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+void au_refresh_iop(struct inode *inode, int force_getattr)
+{
+	int type;
+	struct au_sbinfo *sbi = au_sbi(inode->i_sb);
+	const struct inode_operations *iop
+		= force_getattr ? aufs_iop : sbi->si_iop_array;
+
+	if (inode->i_op == iop)
+		return;
+
+	switch (inode->i_mode & S_IFMT) {
+	case S_IFDIR:
+		type = AuIop_DIR;
+		break;
+	case S_IFLNK:
+		type = AuIop_SYMLINK;
+		break;
+	default:
+		type = AuIop_OTHER;
+		break;
+	}
+
+	inode->i_op = iop + type;
+	/* unnecessary smp_wmb() */
+}
+
+int au_refresh_hinode_self(struct inode *inode)
+{
+	int err, update;
+
+	err = au_ii_refresh(inode, &update);
+	if (!err)
+		au_refresh_hinode_attr(inode, update && S_ISDIR(inode->i_mode));
+
+	AuTraceErr(err);
+	return err;
+}
+
+int au_refresh_hinode(struct inode *inode, struct dentry *dentry)
+{
+	int err, e, update;
+	unsigned int flags;
+	umode_t mode;
+	aufs_bindex_t bindex, bbot;
+	unsigned char isdir;
+	struct au_hinode *p;
+	struct au_iinfo *iinfo;
+
+	err = au_ii_refresh(inode, &update);
+	if (unlikely(err))
+		goto out;
+
+	update = 0;
+	iinfo = au_ii(inode);
+	p = au_hinode(iinfo, iinfo->ii_btop);
+	mode = (inode->i_mode & S_IFMT);
+	isdir = S_ISDIR(mode);
+	flags = au_hi_flags(inode, isdir);
+	bbot = au_dbbot(dentry);
+	for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) {
+		struct inode *h_i, *h_inode;
+		struct dentry *h_d;
+
+		h_d = au_h_dptr(dentry, bindex);
+		if (!h_d || d_is_negative(h_d))
+			continue;
+
+		h_inode = d_inode(h_d);
+		AuDebugOn(mode != (h_inode->i_mode & S_IFMT));
+		if (iinfo->ii_btop <= bindex && bindex <= iinfo->ii_bbot) {
+			h_i = au_h_iptr(inode, bindex);
+			if (h_i) {
+				if (h_i == h_inode)
+					continue;
+				err = -EIO;
+				break;
+			}
+		}
+		if (bindex < iinfo->ii_btop)
+			iinfo->ii_btop = bindex;
+		if (iinfo->ii_bbot < bindex)
+			iinfo->ii_bbot = bindex;
+		au_set_h_iptr(inode, bindex, au_igrab(h_inode), flags);
+		update = 1;
+	}
+	au_update_ibrange(inode, /*do_put_zero*/0);
+	e = au_dy_irefresh(inode);
+	if (unlikely(e && !err))
+		err = e;
+	if (!err)
+		au_refresh_hinode_attr(inode, update && isdir);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int set_inode(struct inode *inode, struct dentry *dentry)
+{
+	int err;
+	unsigned int flags;
+	umode_t mode;
+	aufs_bindex_t bindex, btop, btail;
+	unsigned char isdir;
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+	struct au_iinfo *iinfo;
+	const struct inode_operations *iop;
+
+	IiMustWriteLock(inode);
+
+	err = 0;
+	isdir = 0;
+	iop = au_sbi(inode->i_sb)->si_iop_array;
+	btop = au_dbtop(dentry);
+	h_dentry = au_h_dptr(dentry, btop);
+	h_inode = d_inode(h_dentry);
+	mode = h_inode->i_mode;
+	switch (mode & S_IFMT) {
+	case S_IFREG:
+		btail = au_dbtail(dentry);
+		inode->i_op = iop + AuIop_OTHER;
+		inode->i_fop = &aufs_file_fop;
+		err = au_dy_iaop(inode, btop, h_inode);
+		if (unlikely(err))
+			goto out;
+		break;
+	case S_IFDIR:
+		isdir = 1;
+		btail = au_dbtaildir(dentry);
+		inode->i_op = iop + AuIop_DIR;
+		inode->i_fop = &aufs_dir_fop;
+		break;
+	case S_IFLNK:
+		btail = au_dbtail(dentry);
+		inode->i_op = iop + AuIop_SYMLINK;
+		break;
+	case S_IFBLK:
+	case S_IFCHR:
+	case S_IFIFO:
+	case S_IFSOCK:
+		btail = au_dbtail(dentry);
+		inode->i_op = iop + AuIop_OTHER;
+		init_special_inode(inode, mode, h_inode->i_rdev);
+		break;
+	default:
+		AuIOErr("Unknown file type 0%o\n", mode);
+		err = -EIO;
+		goto out;
+	}
+
+	/* do not set hnotify for whiteouted dirs (SHWH mode) */
+	flags = au_hi_flags(inode, isdir);
+	if (au_opt_test(au_mntflags(dentry->d_sb), SHWH)
+	    && au_ftest_hi(flags, HNOTIFY)
+	    && dentry->d_name.len > AUFS_WH_PFX_LEN
+	    && !memcmp(dentry->d_name.name, AUFS_WH_PFX, AUFS_WH_PFX_LEN))
+		au_fclr_hi(flags, HNOTIFY);
+	iinfo = au_ii(inode);
+	iinfo->ii_btop = btop;
+	iinfo->ii_bbot = btail;
+	for (bindex = btop; bindex <= btail; bindex++) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (h_dentry)
+			au_set_h_iptr(inode, bindex,
+				      au_igrab(d_inode(h_dentry)), flags);
+	}
+	au_cpup_attr_all(inode, /*force*/1);
+	/*
+	 * to force calling aufs_get_acl() every time,
+	 * do not call cache_no_acl() for aufs inode.
+	 */
+
+out:
+	return err;
+}
+
+/*
+ * successful returns with iinfo write_locked
+ * minus: errno
+ * zero: success, matched
+ * plus: no error, but unmatched
+ */
+static int reval_inode(struct inode *inode, struct dentry *dentry)
+{
+	int err;
+	unsigned int gen, igflags;
+	aufs_bindex_t bindex, bbot;
+	struct inode *h_inode, *h_dinode;
+	struct dentry *h_dentry;
+
+	/*
+	 * before this function, if aufs got any iinfo lock, it must be only
+	 * one, the parent dir.
+	 * it can happen by UDBA and the obsoleted inode number.
+	 */
+	err = -EIO;
+	if (unlikely(inode->i_ino == parent_ino(dentry)))
+		goto out;
+
+	err = 1;
+	ii_write_lock_new_child(inode);
+	h_dentry = au_h_dptr(dentry, au_dbtop(dentry));
+	h_dinode = d_inode(h_dentry);
+	bbot = au_ibbot(inode);
+	for (bindex = au_ibtop(inode); bindex <= bbot; bindex++) {
+		h_inode = au_h_iptr(inode, bindex);
+		if (!h_inode || h_inode != h_dinode)
+			continue;
+
+		err = 0;
+		gen = au_iigen(inode, &igflags);
+		if (gen == au_digen(dentry)
+		    && !au_ig_ftest(igflags, HALF_REFRESHED))
+			break;
+
+		/* fully refresh inode using dentry */
+		err = au_refresh_hinode(inode, dentry);
+		if (!err)
+			au_update_iigen(inode, /*half*/0);
+		break;
+	}
+
+	if (unlikely(err))
+		ii_write_unlock(inode);
+out:
+	return err;
+}
+
+int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+	   unsigned int d_type, ino_t *ino)
+{
+	int err, idx;
+	const int isnondir = d_type != DT_DIR;
+
+	/* prevent hardlinked inode number from race condition */
+	if (isnondir) {
+		err = au_xinondir_enter(sb, bindex, h_ino, &idx);
+		if (unlikely(err))
+			goto out;
+	}
+
+	err = au_xino_read(sb, bindex, h_ino, ino);
+	if (unlikely(err))
+		goto out_xinondir;
+
+	if (!*ino) {
+		err = -EIO;
+		*ino = au_xino_new_ino(sb);
+		if (unlikely(!*ino))
+			goto out_xinondir;
+		err = au_xino_write(sb, bindex, h_ino, *ino);
+		if (unlikely(err))
+			goto out_xinondir;
+	}
+
+out_xinondir:
+	if (isnondir && idx >= 0)
+		au_xinondir_leave(sb, bindex, h_ino, idx);
+out:
+	return err;
+}
+
+/* successful returns with iinfo write_locked */
+/* todo: return with unlocked? */
+struct inode *au_new_inode(struct dentry *dentry, int must_new)
+{
+	struct inode *inode, *h_inode;
+	struct dentry *h_dentry;
+	struct super_block *sb;
+	ino_t h_ino, ino;
+	int err, idx, hlinked;
+	aufs_bindex_t btop;
+
+	sb = dentry->d_sb;
+	btop = au_dbtop(dentry);
+	h_dentry = au_h_dptr(dentry, btop);
+	h_inode = d_inode(h_dentry);
+	h_ino = h_inode->i_ino;
+	hlinked = !d_is_dir(h_dentry) && h_inode->i_nlink > 1;
+
+new_ino:
+	/*
+	 * stop 'race'-ing between hardlinks under different
+	 * parents.
+	 */
+	if (hlinked) {
+		err = au_xinondir_enter(sb, btop, h_ino, &idx);
+		inode = ERR_PTR(err);
+		if (unlikely(err))
+			goto out;
+	}
+
+	err = au_xino_read(sb, btop, h_ino, &ino);
+	inode = ERR_PTR(err);
+	if (unlikely(err))
+		goto out_xinondir;
+
+	if (!ino) {
+		ino = au_xino_new_ino(sb);
+		if (unlikely(!ino)) {
+			inode = ERR_PTR(-EIO);
+			goto out_xinondir;
+		}
+	}
+
+	AuDbg("i%lu\n", (unsigned long)ino);
+	inode = au_iget_locked(sb, ino);
+	err = PTR_ERR(inode);
+	if (IS_ERR(inode))
+		goto out_xinondir;
+
+	AuDbg("%lx, new %d\n", inode->i_state, !!(inode->i_state & I_NEW));
+	if (inode->i_state & I_NEW) {
+		ii_write_lock_new_child(inode);
+		err = set_inode(inode, dentry);
+		if (!err) {
+			unlock_new_inode(inode);
+			goto out_xinondir; /* success */
+		}
+
+		/*
+		 * iget_failed() calls iput(), but we need to call
+		 * ii_write_unlock() after iget_failed(). so dirty hack for
+		 * i_count.
+		 */
+		atomic_inc(&inode->i_count);
+		iget_failed(inode);
+		ii_write_unlock(inode);
+		au_xino_write(sb, btop, h_ino, /*ino*/0);
+		/* ignore this error */
+		goto out_iput;
+	} else if (!must_new && !IS_DEADDIR(inode) && inode->i_nlink) {
+		/*
+		 * horrible race condition between lookup, readdir and copyup
+		 * (or something).
+		 */
+		if (hlinked && idx >= 0)
+			au_xinondir_leave(sb, btop, h_ino, idx);
+		err = reval_inode(inode, dentry);
+		if (unlikely(err < 0)) {
+			hlinked = 0;
+			goto out_iput;
+		}
+		if (!err)
+			goto out; /* success */
+		else if (hlinked && idx >= 0) {
+			err = au_xinondir_enter(sb, btop, h_ino, &idx);
+			if (unlikely(err)) {
+				iput(inode);
+				inode = ERR_PTR(err);
+				goto out;
+			}
+		}
+	}
+
+	if (unlikely(au_test_fs_unique_ino(h_inode)))
+		AuWarn1("Warning: Un-notified UDBA or repeatedly renamed dir,"
+			" b%d, %s, %pd, hi%lu, i%lu.\n",
+			btop, au_sbtype(h_dentry->d_sb), dentry,
+			(unsigned long)h_ino, (unsigned long)ino);
+	ino = 0;
+	err = au_xino_write(sb, btop, h_ino, /*ino*/0);
+	if (!err) {
+		iput(inode);
+		if (hlinked && idx >= 0)
+			au_xinondir_leave(sb, btop, h_ino, idx);
+		goto new_ino;
+	}
+
+out_iput:
+	iput(inode);
+	inode = ERR_PTR(err);
+out_xinondir:
+	if (hlinked && idx >= 0)
+		au_xinondir_leave(sb, btop, h_ino, idx);
+out:
+	return inode;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_test_ro(struct super_block *sb, aufs_bindex_t bindex,
+	       struct inode *inode)
+{
+	int err;
+	struct inode *hi;
+
+	err = au_br_rdonly(au_sbr(sb, bindex));
+
+	/* pseudo-link after flushed may happen out of bounds */
+	if (!err
+	    && inode
+	    && au_ibtop(inode) <= bindex
+	    && bindex <= au_ibbot(inode)) {
+		/*
+		 * permission check is unnecessary since vfsub routine
+		 * will be called later
+		 */
+		hi = au_h_iptr(inode, bindex);
+		if (hi)
+			err = IS_IMMUTABLE(hi) ? -EROFS : 0;
+	}
+
+	return err;
+}
+
+int au_test_h_perm(struct user_namespace *h_userns, struct inode *h_inode,
+		   int mask)
+{
+	if (uid_eq(current_fsuid(), GLOBAL_ROOT_UID))
+		return 0;
+	return inode_permission(h_userns, h_inode, mask);
+}
+
+int au_test_h_perm_sio(struct user_namespace *h_userns, struct inode *h_inode,
+		       int mask)
+{
+	if (au_test_nfs(h_inode->i_sb)
+	    && (mask & MAY_WRITE)
+	    && S_ISDIR(h_inode->i_mode))
+		mask |= MAY_READ; /* force permission check */
+	return au_test_h_perm(h_userns, h_inode, mask);
+}
diff -Naur --no-dereference a/fs/aufs/inode.h b/fs/aufs/inode.h
--- a/fs/aufs/inode.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/inode.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,705 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operations
+ */
+
+#ifndef __AUFS_INODE_H__
+#define __AUFS_INODE_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fsnotify.h>
+#include "rwsem.h"
+
+struct vfsmount;
+
+struct au_hnotify {
+#ifdef CONFIG_AUFS_HNOTIFY
+#ifdef CONFIG_AUFS_HFSNOTIFY
+	/* never use fsnotify_add_vfsmount_mark() */
+	struct fsnotify_mark		hn_mark;
+#endif
+	struct inode		*hn_aufs_inode;	/* no get/put */
+	struct rcu_head		rcu;
+#endif
+} ____cacheline_aligned_in_smp;
+
+struct au_hinode {
+	struct inode		*hi_inode;
+	aufs_bindex_t		hi_id;
+#ifdef CONFIG_AUFS_HNOTIFY
+	struct au_hnotify	*hi_notify;
+#endif
+
+	/* reference to the copied-up whiteout with get/put */
+	struct dentry		*hi_whdentry;
+};
+
+/* ig_flags */
+#define AuIG_HALF_REFRESHED		1
+#define au_ig_ftest(flags, name)	((flags) & AuIG_##name)
+#define au_ig_fset(flags, name) \
+	do { (flags) |= AuIG_##name; } while (0)
+#define au_ig_fclr(flags, name) \
+	do { (flags) &= ~AuIG_##name; } while (0)
+
+struct au_iigen {
+	spinlock_t	ig_spin;
+	__u32		ig_generation, ig_flags;
+};
+
+struct au_vdir;
+struct au_iinfo {
+	struct au_iigen		ii_generation;
+	struct super_block	*ii_hsb1;	/* no get/put */
+
+	struct au_rwsem		ii_rwsem;
+	aufs_bindex_t		ii_btop, ii_bbot;
+	__u32			ii_higen;
+	struct au_hinode	*ii_hinode;
+	struct au_vdir		*ii_vdir;
+};
+
+struct au_icntnr {
+	struct au_iinfo		iinfo;
+	struct inode		vfs_inode;
+	struct hlist_bl_node	plink;
+	struct rcu_head		rcu;
+} ____cacheline_aligned_in_smp;
+
+/* au_pin flags */
+#define AuPin_DI_LOCKED		1
+#define AuPin_MNT_WRITE		(1 << 1)
+#define au_ftest_pin(flags, name)	((flags) & AuPin_##name)
+#define au_fset_pin(flags, name) \
+	do { (flags) |= AuPin_##name; } while (0)
+#define au_fclr_pin(flags, name) \
+	do { (flags) &= ~AuPin_##name; } while (0)
+
+struct au_pin {
+	/* input */
+	struct dentry *dentry;
+	unsigned int udba;
+	unsigned char lsc_di, lsc_hi, flags;
+	aufs_bindex_t bindex;
+
+	/* output */
+	struct dentry *parent;
+	struct au_hinode *hdir;
+	struct vfsmount *h_mnt;
+
+	/* temporary unlock/relock for copyup */
+	struct dentry *h_dentry, *h_parent;
+	struct au_branch *br;
+	struct task_struct *task;
+};
+
+void au_pin_hdir_unlock(struct au_pin *p);
+int au_pin_hdir_lock(struct au_pin *p);
+int au_pin_hdir_relock(struct au_pin *p);
+void au_pin_hdir_acquire_nest(struct au_pin *p);
+void au_pin_hdir_release(struct au_pin *p);
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_iinfo *au_ii(struct inode *inode)
+{
+	BUG_ON(is_bad_inode(inode));
+	return &(container_of(inode, struct au_icntnr, vfs_inode)->iinfo);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* inode.c */
+struct inode *au_igrab(struct inode *inode);
+void au_refresh_iop(struct inode *inode, int force_getattr);
+int au_refresh_hinode_self(struct inode *inode);
+int au_refresh_hinode(struct inode *inode, struct dentry *dentry);
+int au_ino(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+	   unsigned int d_type, ino_t *ino);
+struct inode *au_new_inode(struct dentry *dentry, int must_new);
+int au_test_ro(struct super_block *sb, aufs_bindex_t bindex,
+	       struct inode *inode);
+int au_test_h_perm(struct user_namespace *h_userns, struct inode *h_inode,
+		   int mask);
+int au_test_h_perm_sio(struct user_namespace *h_userns, struct inode *h_inode,
+		       int mask);
+
+static inline int au_wh_ino(struct super_block *sb, aufs_bindex_t bindex,
+			    ino_t h_ino, unsigned int d_type, ino_t *ino)
+{
+#ifdef CONFIG_AUFS_SHWH
+	return au_ino(sb, bindex, h_ino, d_type, ino);
+#else
+	return 0;
+#endif
+}
+
+/* i_op.c */
+enum {
+	AuIop_SYMLINK,
+	AuIop_DIR,
+	AuIop_OTHER,
+	AuIop_Last
+};
+extern struct inode_operations aufs_iop[AuIop_Last], /* not const */
+	aufs_iop_nogetattr[AuIop_Last];
+
+/* au_wr_dir flags */
+#define AuWrDir_ADD_ENTRY	1
+#define AuWrDir_ISDIR		(1 << 1)
+#define AuWrDir_TMPFILE		(1 << 2)
+#define au_ftest_wrdir(flags, name)	((flags) & AuWrDir_##name)
+#define au_fset_wrdir(flags, name) \
+	do { (flags) |= AuWrDir_##name; } while (0)
+#define au_fclr_wrdir(flags, name) \
+	do { (flags) &= ~AuWrDir_##name; } while (0)
+
+struct au_wr_dir_args {
+	aufs_bindex_t force_btgt;
+	unsigned char flags;
+};
+int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry,
+	      struct au_wr_dir_args *args);
+
+struct dentry *au_pinned_h_parent(struct au_pin *pin);
+void au_pin_init(struct au_pin *pin, struct dentry *dentry,
+		 aufs_bindex_t bindex, int lsc_di, int lsc_hi,
+		 unsigned int udba, unsigned char flags);
+int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex,
+	   unsigned int udba, unsigned char flags) __must_check;
+int au_do_pin(struct au_pin *pin) __must_check;
+void au_unpin(struct au_pin *pin);
+int au_reval_for_attr(struct dentry *dentry, unsigned int sigen);
+
+#define AuIcpup_DID_CPUP	1
+#define au_ftest_icpup(flags, name)	((flags) & AuIcpup_##name)
+#define au_fset_icpup(flags, name) \
+	do { (flags) |= AuIcpup_##name; } while (0)
+#define au_fclr_icpup(flags, name) \
+	do { (flags) &= ~AuIcpup_##name; } while (0)
+
+struct au_icpup_args {
+	unsigned char flags;
+	unsigned char pin_flags;
+	aufs_bindex_t btgt;
+	unsigned int udba;
+	struct au_pin pin;
+	struct path h_path;
+	struct inode *h_inode;
+};
+
+int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia,
+		     struct au_icpup_args *a);
+
+int au_h_path_getattr(struct dentry *dentry, struct inode *inode, int force,
+		      struct path *h_path, int locked);
+
+/* i_op_add.c */
+int au_may_add(struct dentry *dentry, aufs_bindex_t bindex,
+	       struct dentry *h_parent, int isdir);
+int aufs_mknod(struct user_namespace *userns, struct inode *dir,
+	       struct dentry *dentry, umode_t mode, dev_t dev);
+int aufs_symlink(struct user_namespace *userns, struct inode *dir,
+		 struct dentry *dentry, const char *symname);
+int aufs_create(struct user_namespace *userns, struct inode *dir,
+		struct dentry *dentry, umode_t mode, bool want_excl);
+struct vfsub_aopen_args;
+int au_aopen_or_create(struct inode *dir, struct dentry *dentry,
+		       struct vfsub_aopen_args *args);
+int aufs_tmpfile(struct user_namespace *userns, struct inode *dir,
+		 struct dentry *dentry, umode_t mode);
+int aufs_link(struct dentry *src_dentry, struct inode *dir,
+	      struct dentry *dentry);
+int aufs_mkdir(struct user_namespace *userns, struct inode *dir,
+	       struct dentry *dentry, umode_t mode);
+
+/* i_op_del.c */
+int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup);
+int au_may_del(struct dentry *dentry, aufs_bindex_t bindex,
+	       struct dentry *h_parent, int isdir);
+int aufs_unlink(struct inode *dir, struct dentry *dentry);
+int aufs_rmdir(struct inode *dir, struct dentry *dentry);
+
+/* i_op_ren.c */
+int au_wbr(struct dentry *dentry, aufs_bindex_t btgt);
+int aufs_rename(struct user_namespace *userns,
+		struct inode *_src_dir, struct dentry *_src_dentry,
+		struct inode *_dst_dir, struct dentry *_dst_dentry,
+		unsigned int _flags);
+
+/* iinfo.c */
+struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex);
+void au_hiput(struct au_hinode *hinode);
+void au_set_hi_wh(struct inode *inode, aufs_bindex_t bindex,
+		  struct dentry *h_wh);
+unsigned int au_hi_flags(struct inode *inode, int isdir);
+
+/* hinode flags */
+#define AuHi_XINO	1
+#define AuHi_HNOTIFY	(1 << 1)
+#define au_ftest_hi(flags, name)	((flags) & AuHi_##name)
+#define au_fset_hi(flags, name) \
+	do { (flags) |= AuHi_##name; } while (0)
+#define au_fclr_hi(flags, name) \
+	do { (flags) &= ~AuHi_##name; } while (0)
+
+#ifndef CONFIG_AUFS_HNOTIFY
+#undef AuHi_HNOTIFY
+#define AuHi_HNOTIFY	0
+#endif
+
+void au_set_h_iptr(struct inode *inode, aufs_bindex_t bindex,
+		   struct inode *h_inode, unsigned int flags);
+
+void au_update_iigen(struct inode *inode, int half);
+void au_update_ibrange(struct inode *inode, int do_put_zero);
+
+void au_icntnr_init_once(void *_c);
+void au_hinode_init(struct au_hinode *hinode);
+int au_iinfo_init(struct inode *inode);
+void au_iinfo_fin(struct inode *inode);
+int au_hinode_realloc(struct au_iinfo *iinfo, int nbr, int may_shrink);
+
+#ifdef CONFIG_PROC_FS
+/* plink.c */
+int au_plink_maint(struct super_block *sb, int flags);
+struct au_sbinfo;
+void au_plink_maint_leave(struct au_sbinfo *sbinfo);
+int au_plink_maint_enter(struct super_block *sb);
+#ifdef CONFIG_AUFS_DEBUG
+void au_plink_list(struct super_block *sb);
+#else
+AuStubVoid(au_plink_list, struct super_block *sb)
+#endif
+int au_plink_test(struct inode *inode);
+struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex);
+void au_plink_append(struct inode *inode, aufs_bindex_t bindex,
+		     struct dentry *h_dentry);
+void au_plink_put(struct super_block *sb, int verbose);
+void au_plink_clean(struct super_block *sb, int verbose);
+void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id);
+#else
+AuStubInt0(au_plink_maint, struct super_block *sb, int flags);
+AuStubVoid(au_plink_maint_leave, struct au_sbinfo *sbinfo);
+AuStubInt0(au_plink_maint_enter, struct super_block *sb);
+AuStubVoid(au_plink_list, struct super_block *sb);
+AuStubInt0(au_plink_test, struct inode *inode);
+AuStub(struct dentry *, au_plink_lkup, return NULL,
+       struct inode *inode, aufs_bindex_t bindex);
+AuStubVoid(au_plink_append, struct inode *inode, aufs_bindex_t bindex,
+	   struct dentry *h_dentry);
+AuStubVoid(au_plink_put, struct super_block *sb, int verbose);
+AuStubVoid(au_plink_clean, struct super_block *sb, int verbose);
+AuStubVoid(au_plink_half_refresh, struct super_block *sb, aufs_bindex_t br_id);
+#endif /* CONFIG_PROC_FS */
+
+#ifdef CONFIG_AUFS_XATTR
+/* xattr.c */
+int au_cpup_xattr(struct path *h_dst, struct path *h_src, int ignore_flags,
+		  unsigned int verbose);
+ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size);
+void au_xattr_init(struct super_block *sb);
+#else
+AuStubInt0(au_cpup_xattr, struct path *h_dst, struct path *h_src,
+	   int ignore_flags, unsigned int verbose);
+AuStubVoid(au_xattr_init, struct super_block *sb);
+#endif
+
+#ifdef CONFIG_FS_POSIX_ACL
+struct posix_acl *aufs_get_acl(struct inode *inode, int type, bool rcu);
+int aufs_set_acl(struct user_namespace *userns, struct inode *inode,
+		 struct posix_acl *acl, int type);
+#endif
+
+#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL)
+enum {
+	AU_XATTR_SET,
+	AU_ACL_SET
+};
+
+struct au_sxattr {
+	int type;
+	union {
+		struct {
+			const char	*name;
+			const void	*value;
+			size_t		size;
+			int		flags;
+		} set;
+		struct {
+			struct posix_acl *acl;
+			int		type;
+		} acl_set;
+	} u;
+};
+ssize_t au_sxattr(struct dentry *dentry, struct inode *inode,
+		  struct au_sxattr *arg);
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+/* lock subclass for iinfo */
+enum {
+	AuLsc_II_CHILD,		/* child first */
+	AuLsc_II_CHILD2,	/* rename(2), link(2), and cpup at hnotify */
+	AuLsc_II_CHILD3,	/* copyup dirs */
+	AuLsc_II_PARENT,	/* see AuLsc_I_PARENT in vfsub.h */
+	AuLsc_II_PARENT2,
+	AuLsc_II_PARENT3,	/* copyup dirs */
+	AuLsc_II_NEW_CHILD
+};
+
+/*
+ * ii_read_lock_child, ii_write_lock_child,
+ * ii_read_lock_child2, ii_write_lock_child2,
+ * ii_read_lock_child3, ii_write_lock_child3,
+ * ii_read_lock_parent, ii_write_lock_parent,
+ * ii_read_lock_parent2, ii_write_lock_parent2,
+ * ii_read_lock_parent3, ii_write_lock_parent3,
+ * ii_read_lock_new_child, ii_write_lock_new_child,
+ */
+#define AuReadLockFunc(name, lsc) \
+static inline void ii_read_lock_##name(struct inode *i) \
+{ \
+	au_rw_read_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \
+}
+
+#define AuWriteLockFunc(name, lsc) \
+static inline void ii_write_lock_##name(struct inode *i) \
+{ \
+	au_rw_write_lock_nested(&au_ii(i)->ii_rwsem, AuLsc_II_##lsc); \
+}
+
+#define AuRWLockFuncs(name, lsc) \
+	AuReadLockFunc(name, lsc) \
+	AuWriteLockFunc(name, lsc)
+
+AuRWLockFuncs(child, CHILD);
+AuRWLockFuncs(child2, CHILD2);
+AuRWLockFuncs(child3, CHILD3);
+AuRWLockFuncs(parent, PARENT);
+AuRWLockFuncs(parent2, PARENT2);
+AuRWLockFuncs(parent3, PARENT3);
+AuRWLockFuncs(new_child, NEW_CHILD);
+
+#undef AuReadLockFunc
+#undef AuWriteLockFunc
+#undef AuRWLockFuncs
+
+#define ii_read_unlock(i)	au_rw_read_unlock(&au_ii(i)->ii_rwsem)
+#define ii_write_unlock(i)	au_rw_write_unlock(&au_ii(i)->ii_rwsem)
+#define ii_downgrade_lock(i)	au_rw_dgrade_lock(&au_ii(i)->ii_rwsem)
+
+#define IiMustNoWaiters(i)	AuRwMustNoWaiters(&au_ii(i)->ii_rwsem)
+#define IiMustAnyLock(i)	AuRwMustAnyLock(&au_ii(i)->ii_rwsem)
+#define IiMustWriteLock(i)	AuRwMustWriteLock(&au_ii(i)->ii_rwsem)
+
+/* ---------------------------------------------------------------------- */
+
+static inline void au_icntnr_init(struct au_icntnr *c)
+{
+#ifdef CONFIG_AUFS_DEBUG
+	c->vfs_inode.i_mode = 0;
+#endif
+}
+
+static inline unsigned int au_iigen(struct inode *inode, unsigned int *igflags)
+{
+	unsigned int gen;
+	struct au_iinfo *iinfo;
+	struct au_iigen *iigen;
+
+	iinfo = au_ii(inode);
+	iigen = &iinfo->ii_generation;
+	spin_lock(&iigen->ig_spin);
+	if (igflags)
+		*igflags = iigen->ig_flags;
+	gen = iigen->ig_generation;
+	spin_unlock(&iigen->ig_spin);
+
+	return gen;
+}
+
+/* tiny test for inode number */
+/* tmpfs generation is too rough */
+static inline int au_test_higen(struct inode *inode, struct inode *h_inode)
+{
+	struct au_iinfo *iinfo;
+
+	iinfo = au_ii(inode);
+	AuRwMustAnyLock(&iinfo->ii_rwsem);
+	return !(iinfo->ii_hsb1 == h_inode->i_sb
+		 && iinfo->ii_higen == h_inode->i_generation);
+}
+
+static inline void au_iigen_dec(struct inode *inode)
+{
+	struct au_iinfo *iinfo;
+	struct au_iigen *iigen;
+
+	iinfo = au_ii(inode);
+	iigen = &iinfo->ii_generation;
+	spin_lock(&iigen->ig_spin);
+	iigen->ig_generation--;
+	spin_unlock(&iigen->ig_spin);
+}
+
+static inline int au_iigen_test(struct inode *inode, unsigned int sigen)
+{
+	int err;
+
+	err = 0;
+	if (unlikely(inode && au_iigen(inode, NULL) != sigen))
+		err = -EIO;
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_hinode *au_hinode(struct au_iinfo *iinfo,
+					  aufs_bindex_t bindex)
+{
+	return iinfo->ii_hinode + bindex;
+}
+
+static inline int au_is_bad_inode(struct inode *inode)
+{
+	return !!(is_bad_inode(inode) || !au_hinode(au_ii(inode), 0));
+}
+
+static inline aufs_bindex_t au_ii_br_id(struct inode *inode,
+					aufs_bindex_t bindex)
+{
+	IiMustAnyLock(inode);
+	return au_hinode(au_ii(inode), bindex)->hi_id;
+}
+
+static inline aufs_bindex_t au_ibtop(struct inode *inode)
+{
+	IiMustAnyLock(inode);
+	return au_ii(inode)->ii_btop;
+}
+
+static inline aufs_bindex_t au_ibbot(struct inode *inode)
+{
+	IiMustAnyLock(inode);
+	return au_ii(inode)->ii_bbot;
+}
+
+static inline struct au_vdir *au_ivdir(struct inode *inode)
+{
+	IiMustAnyLock(inode);
+	return au_ii(inode)->ii_vdir;
+}
+
+static inline struct dentry *au_hi_wh(struct inode *inode, aufs_bindex_t bindex)
+{
+	IiMustAnyLock(inode);
+	return au_hinode(au_ii(inode), bindex)->hi_whdentry;
+}
+
+static inline void au_set_ibtop(struct inode *inode, aufs_bindex_t bindex)
+{
+	IiMustWriteLock(inode);
+	au_ii(inode)->ii_btop = bindex;
+}
+
+static inline void au_set_ibbot(struct inode *inode, aufs_bindex_t bindex)
+{
+	IiMustWriteLock(inode);
+	au_ii(inode)->ii_bbot = bindex;
+}
+
+static inline void au_set_ivdir(struct inode *inode, struct au_vdir *vdir)
+{
+	IiMustWriteLock(inode);
+	au_ii(inode)->ii_vdir = vdir;
+}
+
+static inline struct au_hinode *au_hi(struct inode *inode, aufs_bindex_t bindex)
+{
+	IiMustAnyLock(inode);
+	return au_hinode(au_ii(inode), bindex);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct dentry *au_pinned_parent(struct au_pin *pin)
+{
+	if (pin)
+		return pin->parent;
+	return NULL;
+}
+
+static inline struct inode *au_pinned_h_dir(struct au_pin *pin)
+{
+	if (pin && pin->hdir)
+		return pin->hdir->hi_inode;
+	return NULL;
+}
+
+static inline struct au_hinode *au_pinned_hdir(struct au_pin *pin)
+{
+	if (pin)
+		return pin->hdir;
+	return NULL;
+}
+
+static inline void au_pin_set_dentry(struct au_pin *pin, struct dentry *dentry)
+{
+	if (pin)
+		pin->dentry = dentry;
+}
+
+static inline void au_pin_set_parent_lflag(struct au_pin *pin,
+					   unsigned char lflag)
+{
+	if (pin) {
+		if (lflag)
+			au_fset_pin(pin->flags, DI_LOCKED);
+		else
+			au_fclr_pin(pin->flags, DI_LOCKED);
+	}
+}
+
+#if 0 /* reserved */
+static inline void au_pin_set_parent(struct au_pin *pin, struct dentry *parent)
+{
+	if (pin) {
+		dput(pin->parent);
+		pin->parent = dget(parent);
+	}
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+struct au_branch;
+#ifdef CONFIG_AUFS_HNOTIFY
+struct au_hnotify_op {
+	void (*ctl)(struct au_hinode *hinode, int do_set);
+	int (*alloc)(struct au_hinode *hinode);
+
+	/*
+	 * if it returns true, the caller should free hinode->hi_notify,
+	 * otherwise ->free() frees it.
+	 */
+	int (*free)(struct au_hinode *hinode,
+		    struct au_hnotify *hn) __must_check;
+
+	void (*fin)(void);
+	int (*init)(void);
+
+	int (*reset_br)(unsigned int udba, struct au_branch *br, int perm);
+	void (*fin_br)(struct au_branch *br);
+	int (*init_br)(struct au_branch *br, int perm);
+};
+
+/* hnotify.c */
+int au_hn_alloc(struct au_hinode *hinode, struct inode *inode);
+void au_hn_free(struct au_hinode *hinode);
+void au_hn_ctl(struct au_hinode *hinode, int do_set);
+void au_hn_reset(struct inode *inode, unsigned int flags);
+int au_hnotify(struct inode *h_dir, struct au_hnotify *hnotify, u32 mask,
+	       const struct qstr *h_child_qstr, struct inode *h_child_inode);
+int au_hnotify_reset_br(unsigned int udba, struct au_branch *br, int perm);
+int au_hnotify_init_br(struct au_branch *br, int perm);
+void au_hnotify_fin_br(struct au_branch *br);
+int __init au_hnotify_init(void);
+void au_hnotify_fin(void);
+
+/* hfsnotify.c */
+extern const struct au_hnotify_op au_hnotify_op;
+
+static inline
+void au_hn_init(struct au_hinode *hinode)
+{
+	hinode->hi_notify = NULL;
+}
+
+static inline struct au_hnotify *au_hn(struct au_hinode *hinode)
+{
+	return hinode->hi_notify;
+}
+
+#else
+AuStub(int, au_hn_alloc, return -EOPNOTSUPP,
+       struct au_hinode *hinode __maybe_unused,
+       struct inode *inode __maybe_unused)
+AuStub(struct au_hnotify *, au_hn, return NULL, struct au_hinode *hinode)
+AuStubVoid(au_hn_free, struct au_hinode *hinode __maybe_unused)
+AuStubVoid(au_hn_ctl, struct au_hinode *hinode __maybe_unused,
+	   int do_set __maybe_unused)
+AuStubVoid(au_hn_reset, struct inode *inode __maybe_unused,
+	   unsigned int flags __maybe_unused)
+AuStubInt0(au_hnotify_reset_br, unsigned int udba __maybe_unused,
+	   struct au_branch *br __maybe_unused,
+	   int perm __maybe_unused)
+AuStubInt0(au_hnotify_init_br, struct au_branch *br __maybe_unused,
+	   int perm __maybe_unused)
+AuStubVoid(au_hnotify_fin_br, struct au_branch *br __maybe_unused)
+AuStubInt0(__init au_hnotify_init, void)
+AuStubVoid(au_hnotify_fin, void)
+AuStubVoid(au_hn_init, struct au_hinode *hinode __maybe_unused)
+#endif /* CONFIG_AUFS_HNOTIFY */
+
+static inline void au_hn_suspend(struct au_hinode *hdir)
+{
+	au_hn_ctl(hdir, /*do_set*/0);
+}
+
+static inline void au_hn_resume(struct au_hinode *hdir)
+{
+	au_hn_ctl(hdir, /*do_set*/1);
+}
+
+static inline void au_hn_inode_lock(struct au_hinode *hdir)
+{
+	inode_lock(hdir->hi_inode);
+	au_hn_suspend(hdir);
+}
+
+static inline void au_hn_inode_lock_nested(struct au_hinode *hdir,
+					  unsigned int sc __maybe_unused)
+{
+	inode_lock_nested(hdir->hi_inode, sc);
+	au_hn_suspend(hdir);
+}
+
+#if 0 /* unused */
+#include "vfsub.h"
+static inline void au_hn_inode_lock_shared_nested(struct au_hinode *hdir,
+						  unsigned int sc)
+{
+	inode_lock_shared_nested(hdir->hi_inode, sc);
+	au_hn_suspend(hdir);
+}
+#endif
+
+static inline void au_hn_inode_unlock(struct au_hinode *hdir)
+{
+	au_hn_resume(hdir);
+	inode_unlock(hdir->hi_inode);
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_INODE_H__ */
diff -Naur --no-dereference a/fs/aufs/ioctl.c b/fs/aufs/ioctl.c
--- a/fs/aufs/ioctl.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/ioctl.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,220 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * ioctl
+ * plink-management and readdir in userspace.
+ * assist the pathconf(3) wrapper library.
+ * move-down
+ * File-based Hierarchical Storage Management.
+ */
+
+#include <linux/compat.h>
+#include <linux/file.h>
+#include "aufs.h"
+
+static int au_wbr_fd(struct path *path, struct aufs_wbr_fd __user *arg)
+{
+	int err, fd;
+	aufs_bindex_t wbi, bindex, bbot;
+	struct file *h_file;
+	struct super_block *sb;
+	struct dentry *root;
+	struct au_branch *br;
+	struct aufs_wbr_fd wbrfd = {
+		.oflags	= au_dir_roflags,
+		.brid	= -1
+	};
+	const int valid = O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_DIRECTORY
+		| O_NOATIME | O_CLOEXEC;
+
+	AuDebugOn(wbrfd.oflags & ~valid);
+
+	if (arg) {
+		err = copy_from_user(&wbrfd, arg, sizeof(wbrfd));
+		if (unlikely(err)) {
+			err = -EFAULT;
+			goto out;
+		}
+
+		err = -EINVAL;
+		AuDbg("wbrfd{0%o, %d}\n", wbrfd.oflags, wbrfd.brid);
+		wbrfd.oflags |= au_dir_roflags;
+		AuDbg("0%o\n", wbrfd.oflags);
+		if (unlikely(wbrfd.oflags & ~valid))
+			goto out;
+	}
+
+	fd = get_unused_fd_flags(0);
+	err = fd;
+	if (unlikely(fd < 0))
+		goto out;
+
+	h_file = ERR_PTR(-EINVAL);
+	wbi = 0;
+	br = NULL;
+	sb = path->dentry->d_sb;
+	root = sb->s_root;
+	aufs_read_lock(root, AuLock_IR);
+	bbot = au_sbbot(sb);
+	if (wbrfd.brid >= 0) {
+		wbi = au_br_index(sb, wbrfd.brid);
+		if (unlikely(wbi < 0 || wbi > bbot))
+			goto out_unlock;
+	}
+
+	h_file = ERR_PTR(-ENOENT);
+	br = au_sbr(sb, wbi);
+	if (!au_br_writable(br->br_perm)) {
+		if (arg)
+			goto out_unlock;
+
+		bindex = wbi + 1;
+		wbi = -1;
+		for (; bindex <= bbot; bindex++) {
+			br = au_sbr(sb, bindex);
+			if (au_br_writable(br->br_perm)) {
+				wbi = bindex;
+				br = au_sbr(sb, wbi);
+				break;
+			}
+		}
+	}
+	AuDbg("wbi %d\n", wbi);
+	if (wbi >= 0)
+		h_file = au_h_open(root, wbi, wbrfd.oflags, NULL,
+				   /*force_wr*/0);
+
+out_unlock:
+	aufs_read_unlock(root, AuLock_IR);
+	err = PTR_ERR(h_file);
+	if (IS_ERR(h_file))
+		goto out_fd;
+
+	au_lcnt_dec(&br->br_nfiles); /* cf. au_h_open() */
+	fd_install(fd, h_file);
+	err = fd;
+	goto out; /* success */
+
+out_fd:
+	put_unused_fd(fd);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+long aufs_ioctl_dir(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	long err;
+	struct dentry *dentry;
+
+	switch (cmd) {
+	case AUFS_CTL_RDU:
+	case AUFS_CTL_RDU_INO:
+		err = au_rdu_ioctl(file, cmd, arg);
+		break;
+
+	case AUFS_CTL_WBR_FD:
+		err = au_wbr_fd(&file->f_path, (void __user *)arg);
+		break;
+
+	case AUFS_CTL_IBUSY:
+		err = au_ibusy_ioctl(file, arg);
+		break;
+
+	case AUFS_CTL_BRINFO:
+		err = au_brinfo_ioctl(file, arg);
+		break;
+
+	case AUFS_CTL_FHSM_FD:
+		dentry = file->f_path.dentry;
+		if (IS_ROOT(dentry))
+			err = au_fhsm_fd(dentry->d_sb, arg);
+		else
+			err = -ENOTTY;
+		break;
+
+	default:
+		/* do not call the lower */
+		AuDbg("0x%x\n", cmd);
+		err = -ENOTTY;
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	long err;
+
+	switch (cmd) {
+	case AUFS_CTL_MVDOWN:
+		err = au_mvdown(file->f_path.dentry, (void __user *)arg);
+		break;
+
+	case AUFS_CTL_WBR_FD:
+		err = au_wbr_fd(&file->f_path, (void __user *)arg);
+		break;
+
+	default:
+		/* do not call the lower */
+		AuDbg("0x%x\n", cmd);
+		err = -ENOTTY;
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+#ifdef CONFIG_COMPAT
+long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd,
+			   unsigned long arg)
+{
+	long err;
+
+	switch (cmd) {
+	case AUFS_CTL_RDU:
+	case AUFS_CTL_RDU_INO:
+		err = au_rdu_compat_ioctl(file, cmd, arg);
+		break;
+
+	case AUFS_CTL_IBUSY:
+		err = au_ibusy_compat_ioctl(file, arg);
+		break;
+
+	case AUFS_CTL_BRINFO:
+		err = au_brinfo_compat_ioctl(file, arg);
+		break;
+
+	default:
+		err = aufs_ioctl_dir(file, cmd, arg);
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd,
+			      unsigned long arg)
+{
+	return aufs_ioctl_nondir(file, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
diff -Naur --no-dereference a/fs/aufs/i_op_add.c b/fs/aufs/i_op_add.c
--- a/fs/aufs/i_op_add.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/i_op_add.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,941 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operations (add entry)
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/*
+ * final procedure of adding a new entry, except link(2).
+ * remove whiteout, instantiate, copyup the parent dir's times and size
+ * and update version.
+ * if it failed, re-create the removed whiteout.
+ */
+static int epilog(struct inode *dir, aufs_bindex_t bindex,
+		  struct dentry *wh_dentry, struct dentry *dentry)
+{
+	int err, rerr;
+	aufs_bindex_t bwh;
+	struct path h_path;
+	struct super_block *sb;
+	struct inode *inode, *h_dir;
+	struct dentry *wh;
+
+	bwh = -1;
+	sb = dir->i_sb;
+	if (wh_dentry) {
+		h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */
+		IMustLock(h_dir);
+		AuDebugOn(au_h_iptr(dir, bindex) != h_dir);
+		bwh = au_dbwh(dentry);
+		h_path.dentry = wh_dentry;
+		h_path.mnt = au_sbr_mnt(sb, bindex);
+		err = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path,
+					  dentry);
+		if (unlikely(err))
+			goto out;
+	}
+
+	inode = au_new_inode(dentry, /*must_new*/1);
+	if (!IS_ERR(inode)) {
+		d_instantiate(dentry, inode);
+		dir = d_inode(dentry->d_parent); /* dir inode is locked */
+		IMustLock(dir);
+		au_dir_ts(dir, bindex);
+		inode_inc_iversion(dir);
+		au_fhsm_wrote(sb, bindex, /*force*/0);
+		return 0; /* success */
+	}
+
+	err = PTR_ERR(inode);
+	if (!wh_dentry)
+		goto out;
+
+	/* revert */
+	/* dir inode is locked */
+	wh = au_wh_create(dentry, bwh, wh_dentry->d_parent);
+	rerr = PTR_ERR(wh);
+	if (IS_ERR(wh)) {
+		AuIOErr("%pd reverting whiteout failed(%d, %d)\n",
+			dentry, err, rerr);
+		err = -EIO;
+	} else
+		dput(wh);
+
+out:
+	return err;
+}
+
+static int au_d_may_add(struct dentry *dentry)
+{
+	int err;
+
+	err = 0;
+	if (unlikely(d_unhashed(dentry)))
+		err = -ENOENT;
+	if (unlikely(d_really_is_positive(dentry)))
+		err = -EEXIST;
+	return err;
+}
+
+/*
+ * simple tests for the adding inode operations.
+ * following the checks in vfs, plus the parent-child relationship.
+ */
+int au_may_add(struct dentry *dentry, aufs_bindex_t bindex,
+	       struct dentry *h_parent, int isdir)
+{
+	int err;
+	umode_t h_mode;
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+
+	err = -ENAMETOOLONG;
+	if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
+		goto out;
+
+	h_dentry = au_h_dptr(dentry, bindex);
+	if (d_really_is_negative(dentry)) {
+		err = -EEXIST;
+		if (unlikely(d_is_positive(h_dentry)))
+			goto out;
+	} else {
+		/* rename(2) case */
+		err = -EIO;
+		if (unlikely(d_is_negative(h_dentry)))
+			goto out;
+		h_inode = d_inode(h_dentry);
+		if (unlikely(!h_inode->i_nlink))
+			goto out;
+
+		h_mode = h_inode->i_mode;
+		if (!isdir) {
+			err = -EISDIR;
+			if (unlikely(S_ISDIR(h_mode)))
+				goto out;
+		} else if (unlikely(!S_ISDIR(h_mode))) {
+			err = -ENOTDIR;
+			goto out;
+		}
+	}
+
+	err = 0;
+	/* expected parent dir is locked */
+	if (unlikely(h_parent != h_dentry->d_parent))
+		err = -EIO;
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/*
+ * initial procedure of adding a new entry.
+ * prepare writable branch and the parent dir, lock it,
+ * and lookup whiteout for the new entry.
+ */
+static struct dentry*
+lock_hdir_lkup_wh(struct dentry *dentry, struct au_dtime *dt,
+		  struct dentry *src_dentry, struct au_pin *pin,
+		  struct au_wr_dir_args *wr_dir_args)
+{
+	struct dentry *wh_dentry, *h_parent;
+	struct super_block *sb;
+	struct au_branch *br;
+	int err;
+	unsigned int udba;
+	aufs_bindex_t bcpup;
+
+	AuDbg("%pd\n", dentry);
+
+	err = au_wr_dir(dentry, src_dentry, wr_dir_args);
+	bcpup = err;
+	wh_dentry = ERR_PTR(err);
+	if (unlikely(err < 0))
+		goto out;
+
+	sb = dentry->d_sb;
+	udba = au_opt_udba(sb);
+	err = au_pin(pin, dentry, bcpup, udba,
+		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+	wh_dentry = ERR_PTR(err);
+	if (unlikely(err))
+		goto out;
+
+	h_parent = au_pinned_h_parent(pin);
+	if (udba != AuOpt_UDBA_NONE
+	    && au_dbtop(dentry) == bcpup)
+		err = au_may_add(dentry, bcpup, h_parent,
+				 au_ftest_wrdir(wr_dir_args->flags, ISDIR));
+	else if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
+		err = -ENAMETOOLONG;
+	wh_dentry = ERR_PTR(err);
+	if (unlikely(err))
+		goto out_unpin;
+
+	br = au_sbr(sb, bcpup);
+	if (dt) {
+		struct path tmp = {
+			.dentry	= h_parent,
+			.mnt	= au_br_mnt(br)
+		};
+		au_dtime_store(dt, au_pinned_parent(pin), &tmp);
+	}
+
+	wh_dentry = NULL;
+	if (bcpup != au_dbwh(dentry))
+		goto out; /* success */
+
+	/*
+	 * ENAMETOOLONG here means that if we allowed create such name, then it
+	 * would not be able to removed in the future. So we don't allow such
+	 * name here and we don't handle ENAMETOOLONG differently here.
+	 */
+	wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, br);
+
+out_unpin:
+	if (IS_ERR(wh_dentry))
+		au_unpin(pin);
+out:
+	return wh_dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+enum { Mknod, Symlink, Creat };
+struct simple_arg {
+	int type;
+	union {
+		struct {
+			umode_t			mode;
+			bool			want_excl;
+			bool			try_aopen;
+			struct vfsub_aopen_args	*aopen;
+		} c;
+		struct {
+			const char *symname;
+		} s;
+		struct {
+			umode_t mode;
+			dev_t dev;
+		} m;
+	} u;
+};
+
+static int add_simple(struct inode *dir, struct dentry *dentry,
+		      struct simple_arg *arg)
+{
+	int err, rerr;
+	aufs_bindex_t btop;
+	unsigned char created;
+	const unsigned char try_aopen
+		= (arg->type == Creat && arg->u.c.try_aopen);
+	struct vfsub_aopen_args *aopen = arg->u.c.aopen;
+	struct dentry *wh_dentry, *parent;
+	struct inode *h_dir;
+	struct super_block *sb;
+	struct au_branch *br;
+	/* to reduce stack size */
+	struct {
+		struct au_dtime dt;
+		struct au_pin pin;
+		struct path h_path;
+		struct au_wr_dir_args wr_dir_args;
+	} *a;
+
+	AuDbg("%pd\n", dentry);
+	IMustLock(dir);
+
+	err = -ENOMEM;
+	a = kmalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+	a->wr_dir_args.force_btgt = -1;
+	a->wr_dir_args.flags = AuWrDir_ADD_ENTRY;
+
+	parent = dentry->d_parent; /* dir inode is locked */
+	if (!try_aopen) {
+		err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
+		if (unlikely(err))
+			goto out_free;
+	}
+	err = au_d_may_add(dentry);
+	if (unlikely(err))
+		goto out_unlock;
+	if (!try_aopen)
+		di_write_lock_parent(parent);
+	wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL,
+				      &a->pin, &a->wr_dir_args);
+	err = PTR_ERR(wh_dentry);
+	if (IS_ERR(wh_dentry))
+		goto out_parent;
+
+	btop = au_dbtop(dentry);
+	sb = dentry->d_sb;
+	br = au_sbr(sb, btop);
+	a->h_path.dentry = au_h_dptr(dentry, btop);
+	a->h_path.mnt = au_br_mnt(br);
+	h_dir = au_pinned_h_dir(&a->pin);
+	switch (arg->type) {
+	case Creat:
+		if (!try_aopen || !h_dir->i_op->atomic_open) {
+			err = vfsub_create(h_dir, &a->h_path, arg->u.c.mode,
+					   arg->u.c.want_excl);
+			created = !err;
+			if (!err && try_aopen)
+				aopen->file->f_mode |= FMODE_CREATED;
+		} else {
+			aopen->br = br;
+			err = vfsub_atomic_open(h_dir, a->h_path.dentry, aopen);
+			AuDbg("err %d\n", err);
+			AuDbgFile(aopen->file);
+			created = err >= 0
+				&& !!(aopen->file->f_mode & FMODE_CREATED);
+		}
+		break;
+	case Symlink:
+		err = vfsub_symlink(h_dir, &a->h_path, arg->u.s.symname);
+		created = !err;
+		break;
+	case Mknod:
+		err = vfsub_mknod(h_dir, &a->h_path, arg->u.m.mode,
+				  arg->u.m.dev);
+		created = !err;
+		break;
+	default:
+		BUG();
+	}
+	if (unlikely(err < 0))
+		goto out_unpin;
+
+	err = epilog(dir, btop, wh_dentry, dentry);
+	if (!err)
+		goto out_unpin; /* success */
+
+	/* revert */
+	if (created /* && d_is_positive(a->h_path.dentry) */) {
+		/* no delegation since it is just created */
+		rerr = vfsub_unlink(h_dir, &a->h_path, /*delegated*/NULL,
+				    /*force*/0);
+		if (rerr) {
+			AuIOErr("%pd revert failure(%d, %d)\n",
+				dentry, err, rerr);
+			err = -EIO;
+		}
+		au_dtime_revert(&a->dt);
+	}
+	if (try_aopen && h_dir->i_op->atomic_open
+	    && (aopen->file->f_mode & FMODE_OPENED))
+		/* aopen->file is still opened */
+		au_lcnt_dec(&aopen->br->br_nfiles);
+
+out_unpin:
+	au_unpin(&a->pin);
+	dput(wh_dentry);
+out_parent:
+	if (!try_aopen)
+		di_write_unlock(parent);
+out_unlock:
+	if (unlikely(err)) {
+		au_update_dbtop(dentry);
+		d_drop(dentry);
+	}
+	if (!try_aopen)
+		aufs_read_unlock(dentry, AuLock_DW);
+out_free:
+	au_kfree_rcu(a);
+out:
+	return err;
+}
+
+int aufs_mknod(struct user_namespace *userns, struct inode *dir,
+	       struct dentry *dentry, umode_t mode, dev_t dev)
+{
+	struct simple_arg arg = {
+		.type = Mknod,
+		.u.m = {
+			.mode	= mode,
+			.dev	= dev
+		}
+	};
+	return add_simple(dir, dentry, &arg);
+}
+
+int aufs_symlink(struct user_namespace *userns, struct inode *dir,
+		 struct dentry *dentry, const char *symname)
+{
+	struct simple_arg arg = {
+		.type = Symlink,
+		.u.s.symname = symname
+	};
+	return add_simple(dir, dentry, &arg);
+}
+
+int aufs_create(struct user_namespace *userns, struct inode *dir,
+		struct dentry *dentry, umode_t mode, bool want_excl)
+{
+	struct simple_arg arg = {
+		.type = Creat,
+		.u.c = {
+			.mode		= mode,
+			.want_excl	= want_excl
+		}
+	};
+	return add_simple(dir, dentry, &arg);
+}
+
+int au_aopen_or_create(struct inode *dir, struct dentry *dentry,
+		       struct vfsub_aopen_args *aopen_args)
+{
+	struct simple_arg arg = {
+		.type = Creat,
+		.u.c = {
+			.mode		= aopen_args->create_mode,
+			.want_excl	= aopen_args->open_flag & O_EXCL,
+			.try_aopen	= true,
+			.aopen		= aopen_args
+		}
+	};
+	return add_simple(dir, dentry, &arg);
+}
+
+int aufs_tmpfile(struct user_namespace *userns, struct inode *dir,
+		 struct dentry *dentry, umode_t mode)
+{
+	int err;
+	aufs_bindex_t bindex;
+	struct super_block *sb;
+	struct dentry *parent, *h_parent, *h_dentry;
+	struct inode *h_dir, *inode;
+	struct vfsmount *h_mnt;
+	struct user_namespace *h_userns;
+	struct au_wr_dir_args wr_dir_args = {
+		.force_btgt	= -1,
+		.flags		= AuWrDir_TMPFILE
+	};
+
+	/* copy-up may happen */
+	inode_lock(dir);
+
+	sb = dir->i_sb;
+	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+	if (unlikely(err))
+		goto out;
+
+	err = au_di_init(dentry);
+	if (unlikely(err))
+		goto out_si;
+
+	err = -EBUSY;
+	parent = d_find_any_alias(dir);
+	AuDebugOn(!parent);
+	di_write_lock_parent(parent);
+	if (unlikely(d_inode(parent) != dir))
+		goto out_parent;
+
+	err = au_digen_test(parent, au_sigen(sb));
+	if (unlikely(err))
+		goto out_parent;
+
+	bindex = au_dbtop(parent);
+	au_set_dbtop(dentry, bindex);
+	au_set_dbbot(dentry, bindex);
+	err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args);
+	bindex = err;
+	if (unlikely(err < 0))
+		goto out_parent;
+
+	err = -EOPNOTSUPP;
+	h_dir = au_h_iptr(dir, bindex);
+	if (unlikely(!h_dir->i_op->tmpfile))
+		goto out_parent;
+
+	h_mnt = au_sbr_mnt(sb, bindex);
+	err = vfsub_mnt_want_write(h_mnt);
+	if (unlikely(err))
+		goto out_parent;
+
+	h_userns = mnt_user_ns(h_mnt);
+	h_parent = au_h_dptr(parent, bindex);
+	h_dentry = vfs_tmpfile(h_userns, h_parent, mode, /*open_flag*/0);
+	if (IS_ERR(h_dentry)) {
+		err = PTR_ERR(h_dentry);
+		goto out_mnt;
+	}
+
+	au_set_dbtop(dentry, bindex);
+	au_set_dbbot(dentry, bindex);
+	au_set_h_dptr(dentry, bindex, dget(h_dentry));
+	inode = au_new_inode(dentry, /*must_new*/1);
+	if (IS_ERR(inode)) {
+		err = PTR_ERR(inode);
+		au_set_h_dptr(dentry, bindex, NULL);
+		au_set_dbtop(dentry, -1);
+		au_set_dbbot(dentry, -1);
+	} else {
+		if (!inode->i_nlink)
+			set_nlink(inode, 1);
+		d_tmpfile(dentry, inode);
+		au_di(dentry)->di_tmpfile = 1;
+
+		/* update without i_mutex */
+		if (au_ibtop(dir) == au_dbtop(dentry))
+			au_cpup_attr_timesizes(dir);
+	}
+	dput(h_dentry);
+
+out_mnt:
+	vfsub_mnt_drop_write(h_mnt);
+out_parent:
+	di_write_unlock(parent);
+	dput(parent);
+	di_write_unlock(dentry);
+	if (unlikely(err)) {
+		au_di_fin(dentry);
+		dentry->d_fsdata = NULL;
+	}
+out_si:
+	si_read_unlock(sb);
+out:
+	inode_unlock(dir);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_link_args {
+	aufs_bindex_t bdst, bsrc;
+	struct au_pin pin;
+	struct path h_path;
+	struct dentry *src_parent, *parent;
+};
+
+static int au_cpup_before_link(struct dentry *src_dentry,
+			       struct au_link_args *a)
+{
+	int err;
+	struct dentry *h_src_dentry;
+	struct au_cp_generic cpg = {
+		.dentry	= src_dentry,
+		.bdst	= a->bdst,
+		.bsrc	= a->bsrc,
+		.len	= -1,
+		.pin	= &a->pin,
+		.flags	= AuCpup_DTIME | AuCpup_HOPEN /* | AuCpup_KEEPLINO */
+	};
+
+	di_read_lock_parent(a->src_parent, AuLock_IR);
+	err = au_test_and_cpup_dirs(src_dentry, a->bdst);
+	if (unlikely(err))
+		goto out;
+
+	h_src_dentry = au_h_dptr(src_dentry, a->bsrc);
+	err = au_pin(&a->pin, src_dentry, a->bdst,
+		     au_opt_udba(src_dentry->d_sb),
+		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+	if (unlikely(err))
+		goto out;
+
+	err = au_sio_cpup_simple(&cpg);
+	au_unpin(&a->pin);
+
+out:
+	di_read_unlock(a->src_parent, AuLock_IR);
+	return err;
+}
+
+static int au_cpup_or_link(struct dentry *src_dentry, struct dentry *dentry,
+			   struct au_link_args *a)
+{
+	int err;
+	unsigned char plink;
+	aufs_bindex_t bbot;
+	struct dentry *h_src_dentry;
+	struct inode *h_inode, *inode, *delegated;
+	struct super_block *sb;
+	struct file *h_file;
+
+	plink = 0;
+	h_inode = NULL;
+	sb = src_dentry->d_sb;
+	inode = d_inode(src_dentry);
+	if (au_ibtop(inode) <= a->bdst)
+		h_inode = au_h_iptr(inode, a->bdst);
+	if (!h_inode || !h_inode->i_nlink) {
+		/* copyup src_dentry as the name of dentry. */
+		bbot = au_dbbot(dentry);
+		if (bbot < a->bsrc)
+			au_set_dbbot(dentry, a->bsrc);
+		au_set_h_dptr(dentry, a->bsrc,
+			      dget(au_h_dptr(src_dentry, a->bsrc)));
+		dget(a->h_path.dentry);
+		au_set_h_dptr(dentry, a->bdst, NULL);
+		AuDbg("temporary d_inode...\n");
+		spin_lock(&dentry->d_lock);
+		dentry->d_inode = d_inode(src_dentry); /* tmp */
+		spin_unlock(&dentry->d_lock);
+		h_file = au_h_open_pre(dentry, a->bsrc, /*force_wr*/0);
+		if (IS_ERR(h_file))
+			err = PTR_ERR(h_file);
+		else {
+			struct au_cp_generic cpg = {
+				.dentry	= dentry,
+				.bdst	= a->bdst,
+				.bsrc	= -1,
+				.len	= -1,
+				.pin	= &a->pin,
+				.flags	= AuCpup_KEEPLINO
+			};
+			err = au_sio_cpup_simple(&cpg);
+			au_h_open_post(dentry, a->bsrc, h_file);
+			if (!err) {
+				dput(a->h_path.dentry);
+				a->h_path.dentry = au_h_dptr(dentry, a->bdst);
+			} else
+				au_set_h_dptr(dentry, a->bdst,
+					      a->h_path.dentry);
+		}
+		spin_lock(&dentry->d_lock);
+		dentry->d_inode = NULL; /* restore */
+		spin_unlock(&dentry->d_lock);
+		AuDbg("temporary d_inode...done\n");
+		au_set_h_dptr(dentry, a->bsrc, NULL);
+		au_set_dbbot(dentry, bbot);
+	} else {
+		/* the inode of src_dentry already exists on a.bdst branch */
+		h_src_dentry = d_find_alias(h_inode);
+		if (!h_src_dentry && au_plink_test(inode)) {
+			plink = 1;
+			h_src_dentry = au_plink_lkup(inode, a->bdst);
+			err = PTR_ERR(h_src_dentry);
+			if (IS_ERR(h_src_dentry))
+				goto out;
+
+			if (unlikely(d_is_negative(h_src_dentry))) {
+				dput(h_src_dentry);
+				h_src_dentry = NULL;
+			}
+
+		}
+		if (h_src_dentry) {
+			delegated = NULL;
+			err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin),
+					 &a->h_path, &delegated);
+			if (unlikely(err == -EWOULDBLOCK)) {
+				pr_warn("cannot retry for NFSv4 delegation"
+					" for an internal link\n");
+				iput(delegated);
+			}
+			dput(h_src_dentry);
+		} else {
+			AuIOErr("no dentry found for hi%lu on b%d\n",
+				h_inode->i_ino, a->bdst);
+			err = -EIO;
+		}
+	}
+
+	if (!err && !plink)
+		au_plink_append(inode, a->bdst, a->h_path.dentry);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int aufs_link(struct dentry *src_dentry, struct inode *dir,
+	      struct dentry *dentry)
+{
+	int err, rerr;
+	struct au_dtime dt;
+	struct au_link_args *a;
+	struct dentry *wh_dentry, *h_src_dentry;
+	struct inode *inode, *delegated;
+	struct super_block *sb;
+	struct au_wr_dir_args wr_dir_args = {
+		/* .force_btgt	= -1, */
+		.flags		= AuWrDir_ADD_ENTRY
+	};
+
+	IMustLock(dir);
+	inode = d_inode(src_dentry);
+	IMustLock(inode);
+
+	err = -ENOMEM;
+	a = kzalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+
+	a->parent = dentry->d_parent; /* dir inode is locked */
+	err = aufs_read_and_write_lock2(dentry, src_dentry,
+					AuLock_NOPLM | AuLock_GEN);
+	if (unlikely(err))
+		goto out_kfree;
+	err = au_d_linkable(src_dentry);
+	if (unlikely(err))
+		goto out_unlock;
+	err = au_d_may_add(dentry);
+	if (unlikely(err))
+		goto out_unlock;
+
+	a->src_parent = dget_parent(src_dentry);
+	wr_dir_args.force_btgt = au_ibtop(inode);
+
+	di_write_lock_parent(a->parent);
+	wr_dir_args.force_btgt = au_wbr(dentry, wr_dir_args.force_btgt);
+	wh_dentry = lock_hdir_lkup_wh(dentry, &dt, src_dentry, &a->pin,
+				      &wr_dir_args);
+	err = PTR_ERR(wh_dentry);
+	if (IS_ERR(wh_dentry))
+		goto out_parent;
+
+	err = 0;
+	sb = dentry->d_sb;
+	a->bdst = au_dbtop(dentry);
+	a->h_path.dentry = au_h_dptr(dentry, a->bdst);
+	a->h_path.mnt = au_sbr_mnt(sb, a->bdst);
+	a->bsrc = au_ibtop(inode);
+	h_src_dentry = au_h_d_alias(src_dentry, a->bsrc);
+	if (!h_src_dentry && au_di(src_dentry)->di_tmpfile)
+		h_src_dentry = dget(au_hi_wh(inode, a->bsrc));
+	if (!h_src_dentry) {
+		a->bsrc = au_dbtop(src_dentry);
+		h_src_dentry = au_h_d_alias(src_dentry, a->bsrc);
+		AuDebugOn(!h_src_dentry);
+	} else if (IS_ERR(h_src_dentry)) {
+		err = PTR_ERR(h_src_dentry);
+		goto out_parent;
+	}
+
+	/*
+	 * aufs doesn't touch the credential so
+	 * security_dentry_create_files_as() is unnecessary.
+	 */
+	if (au_opt_test(au_mntflags(sb), PLINK)) {
+		if (a->bdst < a->bsrc
+		    /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */)
+			err = au_cpup_or_link(src_dentry, dentry, a);
+		else {
+			delegated = NULL;
+			err = vfsub_link(h_src_dentry, au_pinned_h_dir(&a->pin),
+					 &a->h_path, &delegated);
+			if (unlikely(err == -EWOULDBLOCK)) {
+				pr_warn("cannot retry for NFSv4 delegation"
+					" for an internal link\n");
+				iput(delegated);
+			}
+		}
+		dput(h_src_dentry);
+	} else {
+		/*
+		 * copyup src_dentry to the branch we process,
+		 * and then link(2) to it.
+		 */
+		dput(h_src_dentry);
+		if (a->bdst < a->bsrc
+		    /* && h_src_dentry->d_sb != a->h_path.dentry->d_sb */) {
+			au_unpin(&a->pin);
+			di_write_unlock(a->parent);
+			err = au_cpup_before_link(src_dentry, a);
+			di_write_lock_parent(a->parent);
+			if (!err)
+				err = au_pin(&a->pin, dentry, a->bdst,
+					     au_opt_udba(sb),
+					     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+			if (unlikely(err))
+				goto out_wh;
+		}
+		if (!err) {
+			h_src_dentry = au_h_dptr(src_dentry, a->bdst);
+			err = -ENOENT;
+			if (h_src_dentry && d_is_positive(h_src_dentry)) {
+				delegated = NULL;
+				err = vfsub_link(h_src_dentry,
+						 au_pinned_h_dir(&a->pin),
+						 &a->h_path, &delegated);
+				if (unlikely(err == -EWOULDBLOCK)) {
+					pr_warn("cannot retry"
+						" for NFSv4 delegation"
+						" for an internal link\n");
+					iput(delegated);
+				}
+			}
+		}
+	}
+	if (unlikely(err))
+		goto out_unpin;
+
+	if (wh_dentry) {
+		a->h_path.dentry = wh_dentry;
+		err = au_wh_unlink_dentry(au_pinned_h_dir(&a->pin), &a->h_path,
+					  dentry);
+		if (unlikely(err))
+			goto out_revert;
+	}
+
+	au_dir_ts(dir, a->bdst);
+	inode_inc_iversion(dir);
+	inc_nlink(inode);
+	inode->i_ctime = dir->i_ctime;
+	d_instantiate(dentry, au_igrab(inode));
+	if (d_unhashed(a->h_path.dentry))
+		/* some filesystem calls d_drop() */
+		d_drop(dentry);
+	/* some filesystems consume an inode even hardlink */
+	au_fhsm_wrote(sb, a->bdst, /*force*/0);
+	goto out_unpin; /* success */
+
+out_revert:
+	/* no delegation since it is just created */
+	rerr = vfsub_unlink(au_pinned_h_dir(&a->pin), &a->h_path,
+			    /*delegated*/NULL, /*force*/0);
+	if (unlikely(rerr)) {
+		AuIOErr("%pd reverting failed(%d, %d)\n", dentry, err, rerr);
+		err = -EIO;
+	}
+	au_dtime_revert(&dt);
+out_unpin:
+	au_unpin(&a->pin);
+out_wh:
+	dput(wh_dentry);
+out_parent:
+	di_write_unlock(a->parent);
+	dput(a->src_parent);
+out_unlock:
+	if (unlikely(err)) {
+		au_update_dbtop(dentry);
+		d_drop(dentry);
+	}
+	aufs_read_and_write_unlock2(dentry, src_dentry);
+out_kfree:
+	au_kfree_rcu(a);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int aufs_mkdir(struct user_namespace *userns, struct inode *dir,
+	       struct dentry *dentry, umode_t mode)
+{
+	int err, rerr;
+	aufs_bindex_t bindex;
+	unsigned char diropq;
+	struct path h_path;
+	struct dentry *wh_dentry, *parent, *opq_dentry;
+	struct inode *h_inode;
+	struct super_block *sb;
+	struct {
+		struct au_pin pin;
+		struct au_dtime dt;
+	} *a; /* reduce the stack usage */
+	struct au_wr_dir_args wr_dir_args = {
+		.force_btgt	= -1,
+		.flags		= AuWrDir_ADD_ENTRY | AuWrDir_ISDIR
+	};
+
+	IMustLock(dir);
+
+	err = -ENOMEM;
+	a = kmalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+
+	err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
+	if (unlikely(err))
+		goto out_free;
+	err = au_d_may_add(dentry);
+	if (unlikely(err))
+		goto out_unlock;
+
+	parent = dentry->d_parent; /* dir inode is locked */
+	di_write_lock_parent(parent);
+	wh_dentry = lock_hdir_lkup_wh(dentry, &a->dt, /*src_dentry*/NULL,
+				      &a->pin, &wr_dir_args);
+	err = PTR_ERR(wh_dentry);
+	if (IS_ERR(wh_dentry))
+		goto out_parent;
+
+	sb = dentry->d_sb;
+	bindex = au_dbtop(dentry);
+	h_path.dentry = au_h_dptr(dentry, bindex);
+	h_path.mnt = au_sbr_mnt(sb, bindex);
+	err = vfsub_mkdir(au_pinned_h_dir(&a->pin), &h_path, mode);
+	if (unlikely(err))
+		goto out_unpin;
+
+	/* make the dir opaque */
+	diropq = 0;
+	h_inode = d_inode(h_path.dentry);
+	if (wh_dentry
+	    || au_opt_test(au_mntflags(sb), ALWAYS_DIROPQ)) {
+		inode_lock_nested(h_inode, AuLsc_I_CHILD);
+		opq_dentry = au_diropq_create(dentry, bindex);
+		inode_unlock(h_inode);
+		err = PTR_ERR(opq_dentry);
+		if (IS_ERR(opq_dentry))
+			goto out_dir;
+		dput(opq_dentry);
+		diropq = 1;
+	}
+
+	err = epilog(dir, bindex, wh_dentry, dentry);
+	if (!err) {
+		inc_nlink(dir);
+		goto out_unpin; /* success */
+	}
+
+	/* revert */
+	if (diropq) {
+		AuLabel(revert opq);
+		inode_lock_nested(h_inode, AuLsc_I_CHILD);
+		rerr = au_diropq_remove(dentry, bindex);
+		inode_unlock(h_inode);
+		if (rerr) {
+			AuIOErr("%pd reverting diropq failed(%d, %d)\n",
+				dentry, err, rerr);
+			err = -EIO;
+		}
+	}
+
+out_dir:
+	AuLabel(revert dir);
+	rerr = vfsub_rmdir(au_pinned_h_dir(&a->pin), &h_path);
+	if (rerr) {
+		AuIOErr("%pd reverting dir failed(%d, %d)\n",
+			dentry, err, rerr);
+		err = -EIO;
+	}
+	au_dtime_revert(&a->dt);
+out_unpin:
+	au_unpin(&a->pin);
+	dput(wh_dentry);
+out_parent:
+	di_write_unlock(parent);
+out_unlock:
+	if (unlikely(err)) {
+		au_update_dbtop(dentry);
+		d_drop(dentry);
+	}
+	aufs_read_unlock(dentry, AuLock_DW);
+out_free:
+	au_kfree_rcu(a);
+out:
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/i_op.c b/fs/aufs/i_op.c
--- a/fs/aufs/i_op.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/i_op.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1516 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operations (except add/del/rename)
+ */
+
+#include <linux/device_cgroup.h>
+#include <linux/fs_stack.h>
+#include <linux/iversion.h>
+#include <linux/security.h>
+#include "aufs.h"
+
+static int h_permission(struct inode *h_inode, int mask,
+			struct path *h_path, int brperm)
+{
+	int err;
+	const unsigned char write_mask = !!(mask & (MAY_WRITE | MAY_APPEND));
+	struct user_namespace *h_userns;
+
+	err = -EPERM;
+	if (write_mask && IS_IMMUTABLE(h_inode))
+		goto out;
+
+	err = -EACCES;
+	if (((mask & MAY_EXEC)
+	     && S_ISREG(h_inode->i_mode)
+	     && (path_noexec(h_path)
+		 || !(h_inode->i_mode & 0111))))
+		goto out;
+
+	/*
+	 * - skip the lower fs test in the case of write to ro branch.
+	 * - nfs dir permission write check is optimized, but a policy for
+	 *   link/rename requires a real check.
+	 * - nfs always sets SB_POSIXACL regardless its mount option 'noacl.'
+	 *   in this case, generic_permission() returns -EOPNOTSUPP.
+	 */
+	h_userns = mnt_user_ns(h_path->mnt);
+	if ((write_mask && !au_br_writable(brperm))
+	    || (au_test_nfs(h_inode->i_sb) && S_ISDIR(h_inode->i_mode)
+		&& write_mask && !(mask & MAY_READ))
+	    || !h_inode->i_op->permission) {
+		/* AuLabel(generic_permission); */
+		/* AuDbg("get_acl %ps\n", h_inode->i_op->get_acl); */
+		err = generic_permission(h_userns, h_inode, mask);
+		if (err == -EOPNOTSUPP && au_test_nfs_noacl(h_inode))
+			err = h_inode->i_op->permission(h_userns, h_inode,
+							mask);
+		AuTraceErr(err);
+	} else {
+		/* AuLabel(h_inode->permission); */
+		err = h_inode->i_op->permission(h_userns, h_inode, mask);
+		AuTraceErr(err);
+	}
+
+	if (!err)
+		err = devcgroup_inode_permission(h_inode, mask);
+	if (!err)
+		err = security_inode_permission(h_inode, mask);
+
+out:
+	return err;
+}
+
+static int aufs_permission(struct user_namespace *userns, struct inode *inode,
+			   int mask)
+{
+	int err;
+	aufs_bindex_t bindex, bbot;
+	const unsigned char isdir = !!S_ISDIR(inode->i_mode),
+		write_mask = !!(mask & (MAY_WRITE | MAY_APPEND));
+	struct inode *h_inode;
+	struct super_block *sb;
+	struct au_branch *br;
+
+	/* todo: support rcu-walk? */
+	if (mask & MAY_NOT_BLOCK)
+		return -ECHILD;
+
+	sb = inode->i_sb;
+	si_read_lock(sb, AuLock_FLUSH);
+	ii_read_lock_child(inode);
+#if 0 /* reserved for future use */
+	/*
+	 * This test may be rather 'too much' since the test is essentially done
+	 * in the aufs_lookup().  Theoretically it is possible that the inode
+	 * generation doesn't match to the superblock's here.  But it isn't a
+	 * big deal I suppose.
+	 */
+	err = au_iigen_test(inode, au_sigen(sb));
+	if (unlikely(err))
+		goto out;
+#endif
+
+	if (!isdir
+	    || write_mask
+	    || au_opt_test(au_mntflags(sb), DIRPERM1)) {
+		err = au_busy_or_stale();
+		h_inode = au_h_iptr(inode, au_ibtop(inode));
+		if (unlikely(!h_inode
+			     || (h_inode->i_mode & S_IFMT)
+			     != (inode->i_mode & S_IFMT)))
+			goto out;
+
+		err = 0;
+		bindex = au_ibtop(inode);
+		br = au_sbr(sb, bindex);
+		err = h_permission(h_inode, mask, &br->br_path, br->br_perm);
+		if (write_mask
+		    && !err
+		    && !special_file(h_inode->i_mode)) {
+			/* test whether the upper writable branch exists */
+			err = -EROFS;
+			for (; bindex >= 0; bindex--)
+				if (!au_br_rdonly(au_sbr(sb, bindex))) {
+					err = 0;
+					break;
+				}
+		}
+		goto out;
+	}
+
+	/* non-write to dir */
+	err = 0;
+	bbot = au_ibbot(inode);
+	for (bindex = au_ibtop(inode); !err && bindex <= bbot; bindex++) {
+		h_inode = au_h_iptr(inode, bindex);
+		if (h_inode) {
+			err = au_busy_or_stale();
+			if (unlikely(!S_ISDIR(h_inode->i_mode)))
+				break;
+
+			br = au_sbr(sb, bindex);
+			err = h_permission(h_inode, mask, &br->br_path,
+					   br->br_perm);
+		}
+	}
+
+out:
+	ii_read_unlock(inode);
+	si_read_unlock(sb);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct dentry *aufs_lookup(struct inode *dir, struct dentry *dentry,
+				  unsigned int flags)
+{
+	struct dentry *ret, *parent;
+	struct inode *inode;
+	struct super_block *sb;
+	int err, npositive;
+
+	IMustLock(dir);
+
+	/* todo: support rcu-walk? */
+	ret = ERR_PTR(-ECHILD);
+	if (flags & LOOKUP_RCU)
+		goto out;
+
+	ret = ERR_PTR(-ENAMETOOLONG);
+	if (unlikely(dentry->d_name.len > AUFS_MAX_NAMELEN))
+		goto out;
+
+	sb = dir->i_sb;
+	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+	ret = ERR_PTR(err);
+	if (unlikely(err))
+		goto out;
+
+	err = au_di_init(dentry);
+	ret = ERR_PTR(err);
+	if (unlikely(err))
+		goto out_si;
+
+	inode = NULL;
+	npositive = 0; /* suppress a warning */
+	parent = dentry->d_parent; /* dir inode is locked */
+	di_read_lock_parent(parent, AuLock_IR);
+	err = au_alive_dir(parent);
+	if (!err)
+		err = au_digen_test(parent, au_sigen(sb));
+	if (!err) {
+		/* regardless LOOKUP_CREATE, always ALLOW_NEG */
+		npositive = au_lkup_dentry(dentry, au_dbtop(parent),
+					   AuLkup_ALLOW_NEG);
+		err = npositive;
+	}
+	di_read_unlock(parent, AuLock_IR);
+	ret = ERR_PTR(err);
+	if (unlikely(err < 0))
+		goto out_unlock;
+
+	if (npositive) {
+		inode = au_new_inode(dentry, /*must_new*/0);
+		if (IS_ERR(inode)) {
+			ret = (void *)inode;
+			inode = NULL;
+			goto out_unlock;
+		}
+	}
+
+	if (inode)
+		atomic_inc(&inode->i_count);
+	ret = d_splice_alias(inode, dentry);
+#if 0 /* reserved for future use */
+	if (unlikely(d_need_lookup(dentry))) {
+		spin_lock(&dentry->d_lock);
+		dentry->d_flags &= ~DCACHE_NEED_LOOKUP;
+		spin_unlock(&dentry->d_lock);
+	} else
+#endif
+	if (inode) {
+		if (!IS_ERR(ret)) {
+			iput(inode);
+			if (ret && ret != dentry)
+				ii_write_unlock(inode);
+		} else {
+			ii_write_unlock(inode);
+			iput(inode);
+			inode = NULL;
+		}
+	}
+
+out_unlock:
+	di_write_unlock(dentry);
+out_si:
+	si_read_unlock(sb);
+out:
+	return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * very dirty and complicated aufs ->atomic_open().
+ * aufs_atomic_open()
+ * + au_aopen_or_create()
+ *   + add_simple()
+ *     + vfsub_atomic_open()
+ *       + branch fs ->atomic_open()
+ *	   may call the actual 'open' for h_file
+ *       + inc br_nfiles only if opened
+ * + au_aopen_no_open() or au_aopen_do_open()
+ *
+ * au_aopen_do_open()
+ * + finish_open()
+ *   + au_do_aopen()
+ *     + au_do_open() the body of all 'open'
+ *       + au_do_open_nondir()
+ *	   set the passed h_file
+ *
+ * au_aopen_no_open()
+ * + finish_no_open()
+ */
+
+struct aopen_node {
+	struct hlist_bl_node hblist;
+	struct file *file, *h_file;
+};
+
+static int au_do_aopen(struct inode *inode, struct file *file)
+{
+	struct hlist_bl_head *aopen;
+	struct hlist_bl_node *pos;
+	struct aopen_node *node;
+	struct au_do_open_args args = {
+		.aopen	= 1,
+		.open	= au_do_open_nondir
+	};
+
+	aopen = &au_sbi(inode->i_sb)->si_aopen;
+	hlist_bl_lock(aopen);
+	hlist_bl_for_each_entry(node, pos, aopen, hblist)
+		if (node->file == file) {
+			args.h_file = node->h_file;
+			break;
+		}
+	hlist_bl_unlock(aopen);
+	/* AuDebugOn(!args.h_file); */
+
+	return au_do_open(file, &args);
+}
+
+static int au_aopen_do_open(struct file *file, struct dentry *dentry,
+			    struct aopen_node *aopen_node)
+{
+	int err;
+	struct hlist_bl_head *aopen;
+
+	AuLabel(here);
+	aopen = &au_sbi(dentry->d_sb)->si_aopen;
+	au_hbl_add(&aopen_node->hblist, aopen);
+	err = finish_open(file, dentry, au_do_aopen);
+	au_hbl_del(&aopen_node->hblist, aopen);
+	/* AuDbgFile(file); */
+	AuDbg("%pd%s%s\n", dentry,
+	      (file->f_mode & FMODE_CREATED) ? " created" : "",
+	      (file->f_mode & FMODE_OPENED) ? " opened" : "");
+
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_aopen_no_open(struct file *file, struct dentry *dentry)
+{
+	int err;
+
+	AuLabel(here);
+	dget(dentry);
+	err = finish_no_open(file, dentry);
+
+	AuTraceErr(err);
+	return err;
+}
+
+static int aufs_atomic_open(struct inode *dir, struct dentry *dentry,
+			    struct file *file, unsigned int open_flag,
+			    umode_t create_mode)
+{
+	int err, did_open;
+	unsigned int lkup_flags;
+	aufs_bindex_t bindex;
+	struct super_block *sb;
+	struct dentry *parent, *d;
+	struct vfsub_aopen_args args = {
+		.open_flag	= open_flag,
+		.create_mode	= create_mode
+	};
+	struct aopen_node aopen_node = {
+		.file	= file
+	};
+
+	IMustLock(dir);
+	AuDbg("open_flag 0%o\n", open_flag);
+	AuDbgDentry(dentry);
+
+	err = 0;
+	if (!au_di(dentry)) {
+		lkup_flags = LOOKUP_OPEN;
+		if (open_flag & O_CREAT)
+			lkup_flags |= LOOKUP_CREATE;
+		d = aufs_lookup(dir, dentry, lkup_flags);
+		if (IS_ERR(d)) {
+			err = PTR_ERR(d);
+			AuTraceErr(err);
+			goto out;
+		} else if (d) {
+			/*
+			 * obsoleted dentry found.
+			 * another error will be returned later.
+			 */
+			d_drop(d);
+			AuDbgDentry(d);
+			dput(d);
+		}
+		AuDbgDentry(dentry);
+	}
+
+	if (d_is_positive(dentry)
+	    || d_unhashed(dentry)
+	    || d_unlinked(dentry)
+	    || !(open_flag & O_CREAT)) {
+		err = au_aopen_no_open(file, dentry);
+		goto out; /* success */
+	}
+
+	err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN);
+	if (unlikely(err))
+		goto out;
+
+	sb = dentry->d_sb;
+	parent = dentry->d_parent;	/* dir is locked */
+	di_write_lock_parent(parent);
+	err = au_lkup_dentry(dentry, /*btop*/0, AuLkup_ALLOW_NEG);
+	if (unlikely(err < 0))
+		goto out_parent;
+
+	AuDbgDentry(dentry);
+	if (d_is_positive(dentry)) {
+		err = au_aopen_no_open(file, dentry);
+		goto out_parent; /* success */
+	}
+
+	args.file = alloc_empty_file(file->f_flags, current_cred());
+	err = PTR_ERR(args.file);
+	if (IS_ERR(args.file))
+		goto out_parent;
+
+	bindex = au_dbtop(dentry);
+	err = au_aopen_or_create(dir, dentry, &args);
+	AuTraceErr(err);
+	AuDbgFile(args.file);
+	file->f_mode = args.file->f_mode & ~FMODE_OPENED;
+	did_open = !!(args.file->f_mode & FMODE_OPENED);
+	if (!did_open) {
+		fput(args.file);
+		args.file = NULL;
+	}
+	di_write_unlock(parent);
+	di_write_unlock(dentry);
+	if (unlikely(err < 0)) {
+		if (args.file)
+			fput(args.file);
+		goto out_sb;
+	}
+
+	if (!did_open)
+		err = au_aopen_no_open(file, dentry);
+	else {
+		aopen_node.h_file = args.file;
+		err = au_aopen_do_open(file, dentry, &aopen_node);
+	}
+	if (unlikely(err < 0)) {
+		if (args.file)
+			fput(args.file);
+		if (did_open)
+			au_lcnt_dec(&args.br->br_nfiles);
+	}
+	goto out_sb; /* success */
+
+out_parent:
+	di_write_unlock(parent);
+	di_write_unlock(dentry);
+out_sb:
+	si_read_unlock(sb);
+out:
+	AuTraceErr(err);
+	AuDbgFile(file);
+	return err;
+}
+
+
+/* ---------------------------------------------------------------------- */
+
+static int au_wr_dir_cpup(struct dentry *dentry, struct dentry *parent,
+			  const unsigned char add_entry, aufs_bindex_t bcpup,
+			  aufs_bindex_t btop)
+{
+	int err;
+	struct dentry *h_parent;
+	struct inode *h_dir;
+
+	if (add_entry)
+		IMustLock(d_inode(parent));
+	else
+		di_write_lock_parent(parent);
+
+	err = 0;
+	if (!au_h_dptr(parent, bcpup)) {
+		if (btop > bcpup)
+			err = au_cpup_dirs(dentry, bcpup);
+		else if (btop < bcpup)
+			err = au_cpdown_dirs(dentry, bcpup);
+		else
+			BUG();
+	}
+	if (!err && add_entry && !au_ftest_wrdir(add_entry, TMPFILE)) {
+		h_parent = au_h_dptr(parent, bcpup);
+		h_dir = d_inode(h_parent);
+		inode_lock_shared_nested(h_dir, AuLsc_I_PARENT);
+		err = au_lkup_neg(dentry, bcpup, /*wh*/0);
+		/* todo: no unlock here */
+		inode_unlock_shared(h_dir);
+
+		AuDbg("bcpup %d\n", bcpup);
+		if (!err) {
+			if (d_really_is_negative(dentry))
+				au_set_h_dptr(dentry, btop, NULL);
+			au_update_dbrange(dentry, /*do_put_zero*/0);
+		}
+	}
+
+	if (!add_entry)
+		di_write_unlock(parent);
+	if (!err)
+		err = bcpup; /* success */
+
+	AuTraceErr(err);
+	return err;
+}
+
+/*
+ * decide the branch and the parent dir where we will create a new entry.
+ * returns new bindex or an error.
+ * copyup the parent dir if needed.
+ */
+int au_wr_dir(struct dentry *dentry, struct dentry *src_dentry,
+	      struct au_wr_dir_args *args)
+{
+	int err;
+	unsigned int flags;
+	aufs_bindex_t bcpup, btop, src_btop;
+	const unsigned char add_entry
+		= au_ftest_wrdir(args->flags, ADD_ENTRY)
+		| au_ftest_wrdir(args->flags, TMPFILE);
+	struct super_block *sb;
+	struct dentry *parent;
+	struct au_sbinfo *sbinfo;
+
+	sb = dentry->d_sb;
+	sbinfo = au_sbi(sb);
+	parent = dget_parent(dentry);
+	btop = au_dbtop(dentry);
+	bcpup = btop;
+	if (args->force_btgt < 0) {
+		if (src_dentry) {
+			src_btop = au_dbtop(src_dentry);
+			if (src_btop < btop)
+				bcpup = src_btop;
+		} else if (add_entry) {
+			flags = 0;
+			if (au_ftest_wrdir(args->flags, ISDIR))
+				au_fset_wbr(flags, DIR);
+			err = AuWbrCreate(sbinfo, dentry, flags);
+			bcpup = err;
+		}
+
+		if (bcpup < 0 || au_test_ro(sb, bcpup, d_inode(dentry))) {
+			if (add_entry)
+				err = AuWbrCopyup(sbinfo, dentry);
+			else {
+				if (!IS_ROOT(dentry)) {
+					di_read_lock_parent(parent, !AuLock_IR);
+					err = AuWbrCopyup(sbinfo, dentry);
+					di_read_unlock(parent, !AuLock_IR);
+				} else
+					err = AuWbrCopyup(sbinfo, dentry);
+			}
+			bcpup = err;
+			if (unlikely(err < 0))
+				goto out;
+		}
+	} else {
+		bcpup = args->force_btgt;
+		AuDebugOn(au_test_ro(sb, bcpup, d_inode(dentry)));
+	}
+
+	AuDbg("btop %d, bcpup %d\n", btop, bcpup);
+	err = bcpup;
+	if (bcpup == btop)
+		goto out; /* success */
+
+	/* copyup the new parent into the branch we process */
+	err = au_wr_dir_cpup(dentry, parent, add_entry, bcpup, btop);
+	if (err >= 0) {
+		if (d_really_is_negative(dentry)) {
+			au_set_h_dptr(dentry, btop, NULL);
+			au_set_dbtop(dentry, bcpup);
+			au_set_dbbot(dentry, bcpup);
+		}
+		AuDebugOn(add_entry
+			  && !au_ftest_wrdir(args->flags, TMPFILE)
+			  && !au_h_dptr(dentry, bcpup));
+	}
+
+out:
+	dput(parent);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_pin_hdir_unlock(struct au_pin *p)
+{
+	if (p->hdir)
+		au_hn_inode_unlock(p->hdir);
+}
+
+int au_pin_hdir_lock(struct au_pin *p)
+{
+	int err;
+
+	err = 0;
+	if (!p->hdir)
+		goto out;
+
+	/* even if an error happens later, keep this lock */
+	au_hn_inode_lock_nested(p->hdir, p->lsc_hi);
+
+	err = -EBUSY;
+	if (unlikely(p->hdir->hi_inode != d_inode(p->h_parent)))
+		goto out;
+
+	err = 0;
+	if (p->h_dentry)
+		err = au_h_verify(p->h_dentry, p->udba, p->hdir->hi_inode,
+				  p->h_parent, p->br);
+
+out:
+	return err;
+}
+
+int au_pin_hdir_relock(struct au_pin *p)
+{
+	int err, i;
+	struct inode *h_i;
+	struct dentry *h_d[] = {
+		p->h_dentry,
+		p->h_parent
+	};
+
+	err = au_pin_hdir_lock(p);
+	if (unlikely(err))
+		goto out;
+
+	for (i = 0; !err && i < sizeof(h_d)/sizeof(*h_d); i++) {
+		if (!h_d[i])
+			continue;
+		if (d_is_positive(h_d[i])) {
+			h_i = d_inode(h_d[i]);
+			err = !h_i->i_nlink;
+		}
+	}
+
+out:
+	return err;
+}
+
+static void au_pin_hdir_set_owner(struct au_pin *p, struct task_struct *task)
+{
+#ifdef CONFIG_PREEMPT_RT
+	p->hdir->hi_inode->i_rwsem.rwbase.rtmutex.owner = task;
+#else
+	atomic_long_set(&p->hdir->hi_inode->i_rwsem.owner, (long)task);
+#endif
+}
+
+void au_pin_hdir_acquire_nest(struct au_pin *p)
+{
+	if (p->hdir) {
+		rwsem_acquire_nest(&p->hdir->hi_inode->i_rwsem.dep_map,
+				   p->lsc_hi, 0, NULL, _RET_IP_);
+		au_pin_hdir_set_owner(p, current);
+	}
+}
+
+void au_pin_hdir_release(struct au_pin *p)
+{
+	if (p->hdir) {
+		au_pin_hdir_set_owner(p, p->task);
+		rwsem_release(&p->hdir->hi_inode->i_rwsem.dep_map, _RET_IP_);
+	}
+}
+
+struct dentry *au_pinned_h_parent(struct au_pin *pin)
+{
+	if (pin && pin->parent)
+		return au_h_dptr(pin->parent, pin->bindex);
+	return NULL;
+}
+
+void au_unpin(struct au_pin *p)
+{
+	if (p->hdir)
+		au_pin_hdir_unlock(p);
+	if (p->h_mnt && au_ftest_pin(p->flags, MNT_WRITE))
+		vfsub_mnt_drop_write(p->h_mnt);
+	if (!p->hdir)
+		return;
+
+	if (!au_ftest_pin(p->flags, DI_LOCKED))
+		di_read_unlock(p->parent, AuLock_IR);
+	iput(p->hdir->hi_inode);
+	dput(p->parent);
+	p->parent = NULL;
+	p->hdir = NULL;
+	p->h_mnt = NULL;
+	/* do not clear p->task */
+}
+
+int au_do_pin(struct au_pin *p)
+{
+	int err;
+	struct super_block *sb;
+	struct inode *h_dir;
+
+	err = 0;
+	sb = p->dentry->d_sb;
+	p->br = au_sbr(sb, p->bindex);
+	if (IS_ROOT(p->dentry)) {
+		if (au_ftest_pin(p->flags, MNT_WRITE)) {
+			p->h_mnt = au_br_mnt(p->br);
+			err = vfsub_mnt_want_write(p->h_mnt);
+			if (unlikely(err)) {
+				au_fclr_pin(p->flags, MNT_WRITE);
+				goto out_err;
+			}
+		}
+		goto out;
+	}
+
+	p->h_dentry = NULL;
+	if (p->bindex <= au_dbbot(p->dentry))
+		p->h_dentry = au_h_dptr(p->dentry, p->bindex);
+
+	p->parent = dget_parent(p->dentry);
+	if (!au_ftest_pin(p->flags, DI_LOCKED))
+		di_read_lock(p->parent, AuLock_IR, p->lsc_di);
+
+	h_dir = NULL;
+	p->h_parent = au_h_dptr(p->parent, p->bindex);
+	p->hdir = au_hi(d_inode(p->parent), p->bindex);
+	if (p->hdir)
+		h_dir = p->hdir->hi_inode;
+
+	/*
+	 * udba case, or
+	 * if DI_LOCKED is not set, then p->parent may be different
+	 * and h_parent can be NULL.
+	 */
+	if (unlikely(!p->hdir || !h_dir || !p->h_parent)) {
+		err = -EBUSY;
+		if (!au_ftest_pin(p->flags, DI_LOCKED))
+			di_read_unlock(p->parent, AuLock_IR);
+		dput(p->parent);
+		p->parent = NULL;
+		goto out_err;
+	}
+
+	if (au_ftest_pin(p->flags, MNT_WRITE)) {
+		p->h_mnt = au_br_mnt(p->br);
+		err = vfsub_mnt_want_write(p->h_mnt);
+		if (unlikely(err)) {
+			au_fclr_pin(p->flags, MNT_WRITE);
+			if (!au_ftest_pin(p->flags, DI_LOCKED))
+				di_read_unlock(p->parent, AuLock_IR);
+			dput(p->parent);
+			p->parent = NULL;
+			goto out_err;
+		}
+	}
+
+	au_igrab(h_dir);
+	err = au_pin_hdir_lock(p);
+	if (!err)
+		goto out; /* success */
+
+	au_unpin(p);
+
+out_err:
+	pr_err("err %d\n", err);
+	err = au_busy_or_stale();
+out:
+	return err;
+}
+
+void au_pin_init(struct au_pin *p, struct dentry *dentry,
+		 aufs_bindex_t bindex, int lsc_di, int lsc_hi,
+		 unsigned int udba, unsigned char flags)
+{
+	p->dentry = dentry;
+	p->udba = udba;
+	p->lsc_di = lsc_di;
+	p->lsc_hi = lsc_hi;
+	p->flags = flags;
+	p->bindex = bindex;
+
+	p->parent = NULL;
+	p->hdir = NULL;
+	p->h_mnt = NULL;
+
+	p->h_dentry = NULL;
+	p->h_parent = NULL;
+	p->br = NULL;
+	p->task = current;
+}
+
+int au_pin(struct au_pin *pin, struct dentry *dentry, aufs_bindex_t bindex,
+	   unsigned int udba, unsigned char flags)
+{
+	au_pin_init(pin, dentry, bindex, AuLsc_DI_PARENT, AuLsc_I_PARENT2,
+		    udba, flags);
+	return au_do_pin(pin);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * ->setattr() and ->getattr() are called in various cases.
+ * chmod, stat: dentry is revalidated.
+ * fchmod, fstat: file and dentry are not revalidated, additionally they may be
+ *		  unhashed.
+ * for ->setattr(), ia->ia_file is passed from ftruncate only.
+ */
+/* todo: consolidate with do_refresh() and simple_reval_dpath() */
+int au_reval_for_attr(struct dentry *dentry, unsigned int sigen)
+{
+	int err;
+	struct dentry *parent;
+
+	err = 0;
+	if (au_digen_test(dentry, sigen)) {
+		parent = dget_parent(dentry);
+		di_read_lock_parent(parent, AuLock_IR);
+		err = au_refresh_dentry(dentry, parent);
+		di_read_unlock(parent, AuLock_IR);
+		dput(parent);
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+int au_pin_and_icpup(struct dentry *dentry, struct iattr *ia,
+		     struct au_icpup_args *a)
+{
+	int err;
+	loff_t sz;
+	aufs_bindex_t btop, ibtop;
+	struct dentry *hi_wh, *parent;
+	struct inode *inode;
+	struct au_wr_dir_args wr_dir_args = {
+		.force_btgt	= -1,
+		.flags		= 0
+	};
+
+	if (d_is_dir(dentry))
+		au_fset_wrdir(wr_dir_args.flags, ISDIR);
+	/* plink or hi_wh() case */
+	btop = au_dbtop(dentry);
+	inode = d_inode(dentry);
+	ibtop = au_ibtop(inode);
+	if (btop != ibtop && !au_test_ro(inode->i_sb, ibtop, inode))
+		wr_dir_args.force_btgt = ibtop;
+	err = au_wr_dir(dentry, /*src_dentry*/NULL, &wr_dir_args);
+	if (unlikely(err < 0))
+		goto out;
+	a->btgt = err;
+	if (err != btop)
+		au_fset_icpup(a->flags, DID_CPUP);
+
+	err = 0;
+	a->pin_flags = AuPin_MNT_WRITE;
+	parent = NULL;
+	if (!IS_ROOT(dentry)) {
+		au_fset_pin(a->pin_flags, DI_LOCKED);
+		parent = dget_parent(dentry);
+		di_write_lock_parent(parent);
+	}
+
+	err = au_pin(&a->pin, dentry, a->btgt, a->udba, a->pin_flags);
+	if (unlikely(err))
+		goto out_parent;
+
+	sz = -1;
+	a->h_path.dentry = au_h_dptr(dentry, btop);
+	a->h_inode = d_inode(a->h_path.dentry);
+	if (ia && (ia->ia_valid & ATTR_SIZE)) {
+		inode_lock_shared_nested(a->h_inode, AuLsc_I_CHILD);
+		if (ia->ia_size < i_size_read(a->h_inode))
+			sz = ia->ia_size;
+		inode_unlock_shared(a->h_inode);
+	}
+
+	hi_wh = NULL;
+	if (au_ftest_icpup(a->flags, DID_CPUP) && d_unlinked(dentry)) {
+		hi_wh = au_hi_wh(inode, a->btgt);
+		if (!hi_wh) {
+			struct au_cp_generic cpg = {
+				.dentry	= dentry,
+				.bdst	= a->btgt,
+				.bsrc	= -1,
+				.len	= sz,
+				.pin	= &a->pin
+			};
+			err = au_sio_cpup_wh(&cpg, /*file*/NULL);
+			if (unlikely(err))
+				goto out_unlock;
+			hi_wh = au_hi_wh(inode, a->btgt);
+			/* todo: revalidate hi_wh? */
+		}
+	}
+
+	if (parent) {
+		au_pin_set_parent_lflag(&a->pin, /*lflag*/0);
+		di_downgrade_lock(parent, AuLock_IR);
+		dput(parent);
+		parent = NULL;
+	}
+	if (!au_ftest_icpup(a->flags, DID_CPUP))
+		goto out; /* success */
+
+	if (!d_unhashed(dentry)) {
+		struct au_cp_generic cpg = {
+			.dentry	= dentry,
+			.bdst	= a->btgt,
+			.bsrc	= btop,
+			.len	= sz,
+			.pin	= &a->pin,
+			.flags	= AuCpup_DTIME | AuCpup_HOPEN
+		};
+		err = au_sio_cpup_simple(&cpg);
+		if (!err)
+			a->h_path.dentry = au_h_dptr(dentry, a->btgt);
+	} else if (!hi_wh)
+		a->h_path.dentry = au_h_dptr(dentry, a->btgt);
+	else
+		a->h_path.dentry = hi_wh; /* do not dget here */
+
+out_unlock:
+	a->h_inode = d_inode(a->h_path.dentry);
+	if (!err)
+		goto out; /* success */
+	au_unpin(&a->pin);
+out_parent:
+	if (parent) {
+		di_write_unlock(parent);
+		dput(parent);
+	}
+out:
+	if (!err)
+		inode_lock_nested(a->h_inode, AuLsc_I_CHILD);
+	return err;
+}
+
+static int aufs_setattr(struct user_namespace *userns, struct dentry *dentry,
+			struct iattr *ia)
+{
+	int err;
+	struct inode *inode, *delegated;
+	struct super_block *sb;
+	struct file *file;
+	struct au_icpup_args *a;
+	struct user_namespace *h_userns;
+
+	inode = d_inode(dentry);
+	IMustLock(inode);
+
+	err = setattr_prepare(userns, dentry, ia);
+	if (unlikely(err))
+		goto out;
+
+	err = -ENOMEM;
+	a = kzalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+
+	if (ia->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
+		ia->ia_valid &= ~ATTR_MODE;
+
+	file = NULL;
+	sb = dentry->d_sb;
+	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+	if (unlikely(err))
+		goto out_kfree;
+
+	if (ia->ia_valid & ATTR_FILE) {
+		/* currently ftruncate(2) only */
+		AuDebugOn(!d_is_reg(dentry));
+		file = ia->ia_file;
+		err = au_reval_and_lock_fdi(file, au_reopen_nondir, /*wlock*/1,
+					    /*fi_lsc*/0);
+		if (unlikely(err))
+			goto out_si;
+		ia->ia_file = au_hf_top(file);
+		a->udba = AuOpt_UDBA_NONE;
+	} else {
+		/* fchmod() doesn't pass ia_file */
+		a->udba = au_opt_udba(sb);
+		di_write_lock_child(dentry);
+		/* no d_unlinked(), to set UDBA_NONE for root */
+		if (d_unhashed(dentry))
+			a->udba = AuOpt_UDBA_NONE;
+		if (a->udba != AuOpt_UDBA_NONE) {
+			AuDebugOn(IS_ROOT(dentry));
+			err = au_reval_for_attr(dentry, au_sigen(sb));
+			if (unlikely(err))
+				goto out_dentry;
+		}
+	}
+
+	err = au_pin_and_icpup(dentry, ia, a);
+	if (unlikely(err < 0))
+		goto out_dentry;
+	if (au_ftest_icpup(a->flags, DID_CPUP)) {
+		ia->ia_file = NULL;
+		ia->ia_valid &= ~ATTR_FILE;
+	}
+
+	a->h_path.mnt = au_sbr_mnt(sb, a->btgt);
+	if ((ia->ia_valid & (ATTR_MODE | ATTR_CTIME))
+	    == (ATTR_MODE | ATTR_CTIME)) {
+		err = security_path_chmod(&a->h_path, ia->ia_mode);
+		if (unlikely(err))
+			goto out_unlock;
+	} else if ((ia->ia_valid & (ATTR_UID | ATTR_GID))
+		   && (ia->ia_valid & ATTR_CTIME)) {
+		err = security_path_chown(&a->h_path, ia->ia_uid, ia->ia_gid);
+		if (unlikely(err))
+			goto out_unlock;
+	}
+
+	if (ia->ia_valid & ATTR_SIZE) {
+		struct file *f;
+
+		if (ia->ia_size < i_size_read(inode))
+			/* unmap only */
+			truncate_setsize(inode, ia->ia_size);
+
+		f = NULL;
+		if (ia->ia_valid & ATTR_FILE)
+			f = ia->ia_file;
+		inode_unlock(a->h_inode);
+		err = vfsub_trunc(&a->h_path, ia->ia_size, ia->ia_valid, f);
+		inode_lock_nested(a->h_inode, AuLsc_I_CHILD);
+	} else {
+		delegated = NULL;
+		while (1) {
+			err = vfsub_notify_change(&a->h_path, ia, &delegated);
+			if (delegated) {
+				err = break_deleg_wait(&delegated);
+				if (!err)
+					continue;
+			}
+			break;
+		}
+	}
+	/*
+	 * regardless aufs 'acl' option setting.
+	 * why don't all acl-aware fs call this func from their ->setattr()?
+	 */
+	if (!err && (ia->ia_valid & ATTR_MODE)) {
+		h_userns = mnt_user_ns(a->h_path.mnt);
+		err = vfsub_acl_chmod(h_userns, a->h_inode, ia->ia_mode);
+	}
+	if (!err)
+		au_cpup_attr_changeable(inode);
+
+out_unlock:
+	inode_unlock(a->h_inode);
+	au_unpin(&a->pin);
+	if (unlikely(err))
+		au_update_dbtop(dentry);
+out_dentry:
+	di_write_unlock(dentry);
+	if (file) {
+		fi_write_unlock(file);
+		ia->ia_file = file;
+		ia->ia_valid |= ATTR_FILE;
+	}
+out_si:
+	si_read_unlock(sb);
+out_kfree:
+	au_kfree_rcu(a);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL)
+static int au_h_path_to_set_attr(struct dentry *dentry,
+				 struct au_icpup_args *a, struct path *h_path)
+{
+	int err;
+	struct super_block *sb;
+
+	sb = dentry->d_sb;
+	a->udba = au_opt_udba(sb);
+	/* no d_unlinked(), to set UDBA_NONE for root */
+	if (d_unhashed(dentry))
+		a->udba = AuOpt_UDBA_NONE;
+	if (a->udba != AuOpt_UDBA_NONE) {
+		AuDebugOn(IS_ROOT(dentry));
+		err = au_reval_for_attr(dentry, au_sigen(sb));
+		if (unlikely(err))
+			goto out;
+	}
+	err = au_pin_and_icpup(dentry, /*ia*/NULL, a);
+	if (unlikely(err < 0))
+		goto out;
+
+	h_path->dentry = a->h_path.dentry;
+	h_path->mnt = au_sbr_mnt(sb, a->btgt);
+
+out:
+	return err;
+}
+
+ssize_t au_sxattr(struct dentry *dentry, struct inode *inode,
+		  struct au_sxattr *arg)
+{
+	int err;
+	struct path h_path;
+	struct super_block *sb;
+	struct au_icpup_args *a;
+	struct inode *h_inode;
+	struct user_namespace *h_userns;
+
+	IMustLock(inode);
+
+	err = -ENOMEM;
+	a = kzalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+
+	sb = dentry->d_sb;
+	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+	if (unlikely(err))
+		goto out_kfree;
+
+	h_path.dentry = NULL;	/* silence gcc */
+	di_write_lock_child(dentry);
+	err = au_h_path_to_set_attr(dentry, a, &h_path);
+	if (unlikely(err))
+		goto out_di;
+	h_userns = mnt_user_ns(h_path.mnt);
+
+	inode_unlock(a->h_inode);
+	switch (arg->type) {
+	case AU_XATTR_SET:
+		AuDebugOn(d_is_negative(h_path.dentry));
+		err = vfsub_setxattr(h_userns, h_path.dentry,
+				     arg->u.set.name, arg->u.set.value,
+				     arg->u.set.size, arg->u.set.flags);
+		break;
+	case AU_ACL_SET:
+		err = -EOPNOTSUPP;
+		h_inode = d_inode(h_path.dentry);
+		if (h_inode->i_op->set_acl) {
+			/* this will call posix_acl_update_mode */
+			err = h_inode->i_op->set_acl(h_userns, h_inode,
+						     arg->u.acl_set.acl,
+						     arg->u.acl_set.type);
+		}
+		break;
+	}
+	if (!err)
+		au_cpup_attr_timesizes(inode);
+
+	au_unpin(&a->pin);
+	if (unlikely(err))
+		au_update_dbtop(dentry);
+
+out_di:
+	di_write_unlock(dentry);
+	si_read_unlock(sb);
+out_kfree:
+	au_kfree_rcu(a);
+out:
+	AuTraceErr(err);
+	return err;
+}
+#endif
+
+static void au_refresh_iattr(struct inode *inode, struct kstat *st,
+			     unsigned int nlink)
+{
+	unsigned int n;
+
+	inode->i_mode = st->mode;
+	/* don't i_[ug]id_write() here */
+	inode->i_uid = st->uid;
+	inode->i_gid = st->gid;
+	inode->i_atime = st->atime;
+	inode->i_mtime = st->mtime;
+	inode->i_ctime = st->ctime;
+
+	au_cpup_attr_nlink(inode, /*force*/0);
+	if (S_ISDIR(inode->i_mode)) {
+		n = inode->i_nlink;
+		n -= nlink;
+		n += st->nlink;
+		smp_mb(); /* for i_nlink */
+		/* 0 can happen */
+		set_nlink(inode, n);
+	}
+
+	spin_lock(&inode->i_lock);
+	inode->i_blocks = st->blocks;
+	i_size_write(inode, st->size);
+	spin_unlock(&inode->i_lock);
+}
+
+/*
+ * common routine for aufs_getattr() and au_getxattr().
+ * returns zero or negative (an error).
+ * @dentry will be read-locked in success.
+ */
+int au_h_path_getattr(struct dentry *dentry, struct inode *inode, int force,
+		      struct path *h_path, int locked)
+{
+	int err;
+	unsigned int mnt_flags, sigen;
+	unsigned char udba_none;
+	aufs_bindex_t bindex;
+	struct super_block *sb, *h_sb;
+
+	h_path->mnt = NULL;
+	h_path->dentry = NULL;
+
+	err = 0;
+	sb = dentry->d_sb;
+	mnt_flags = au_mntflags(sb);
+	udba_none = !!au_opt_test(mnt_flags, UDBA_NONE);
+
+	if (unlikely(locked))
+		goto body; /* skip locking dinfo */
+
+	/* support fstat(2) */
+	if (!d_unlinked(dentry) && !udba_none) {
+		sigen = au_sigen(sb);
+		err = au_digen_test(dentry, sigen);
+		if (!err) {
+			di_read_lock_child(dentry, AuLock_IR);
+			err = au_dbrange_test(dentry);
+			if (unlikely(err)) {
+				di_read_unlock(dentry, AuLock_IR);
+				goto out;
+			}
+		} else {
+			AuDebugOn(IS_ROOT(dentry));
+			di_write_lock_child(dentry);
+			err = au_dbrange_test(dentry);
+			if (!err)
+				err = au_reval_for_attr(dentry, sigen);
+			if (!err)
+				di_downgrade_lock(dentry, AuLock_IR);
+			else {
+				di_write_unlock(dentry);
+				goto out;
+			}
+		}
+	} else
+		di_read_lock_child(dentry, AuLock_IR);
+
+body:
+	if (!inode) {
+		inode = d_inode(dentry);
+		if (unlikely(!inode))
+			goto out;
+	}
+	bindex = au_ibtop(inode);
+	h_path->mnt = au_sbr_mnt(sb, bindex);
+	h_sb = h_path->mnt->mnt_sb;
+	if (!force
+	    && !au_test_fs_bad_iattr(h_sb)
+	    && udba_none)
+		goto out; /* success */
+
+	if (au_dbtop(dentry) == bindex)
+		h_path->dentry = au_h_dptr(dentry, bindex);
+	else if (au_opt_test(mnt_flags, PLINK) && au_plink_test(inode)) {
+		h_path->dentry = au_plink_lkup(inode, bindex);
+		if (IS_ERR(h_path->dentry))
+			/* pretending success */
+			h_path->dentry = NULL;
+		else
+			dput(h_path->dentry);
+	}
+
+out:
+	return err;
+}
+
+static int aufs_getattr(struct user_namespace *userns, const struct path *path,
+			struct kstat *st, u32 request, unsigned int query)
+{
+	int err;
+	unsigned char positive;
+	struct path h_path;
+	struct dentry *dentry;
+	struct inode *inode;
+	struct super_block *sb;
+
+	dentry = path->dentry;
+	inode = d_inode(dentry);
+	sb = dentry->d_sb;
+	err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+	if (unlikely(err))
+		goto out;
+	err = au_h_path_getattr(dentry, /*inode*/NULL, /*force*/0, &h_path,
+				/*locked*/0);
+	if (unlikely(err))
+		goto out_si;
+	if (unlikely(!h_path.dentry))
+		/* illegally overlapped or something */
+		goto out_fill; /* pretending success */
+
+	positive = d_is_positive(h_path.dentry);
+	if (positive)
+		/* no vfsub version */
+		err = vfs_getattr(&h_path, st, request, query);
+	if (!err) {
+		if (positive)
+			au_refresh_iattr(inode, st,
+					 d_inode(h_path.dentry)->i_nlink);
+		goto out_fill; /* success */
+	}
+	AuTraceErr(err);
+	goto out_di;
+
+out_fill:
+	generic_fillattr(userns, inode, st);
+out_di:
+	di_read_unlock(dentry, AuLock_IR);
+out_si:
+	si_read_unlock(sb);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static const char *aufs_get_link(struct dentry *dentry, struct inode *inode,
+				 struct delayed_call *done)
+{
+	const char *ret;
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+	int err;
+	aufs_bindex_t bindex;
+
+	ret = NULL; /* suppress a warning */
+	err = -ECHILD;
+	if (!dentry)
+		goto out;
+
+	err = aufs_read_lock(dentry, AuLock_IR | AuLock_GEN);
+	if (unlikely(err))
+		goto out;
+
+	err = au_d_hashed_positive(dentry);
+	if (unlikely(err))
+		goto out_unlock;
+
+	err = -EINVAL;
+	inode = d_inode(dentry);
+	bindex = au_ibtop(inode);
+	h_inode = au_h_iptr(inode, bindex);
+	if (unlikely(!h_inode->i_op->get_link))
+		goto out_unlock;
+
+	err = -EBUSY;
+	h_dentry = NULL;
+	if (au_dbtop(dentry) <= bindex) {
+		h_dentry = au_h_dptr(dentry, bindex);
+		if (h_dentry)
+			dget(h_dentry);
+	}
+	if (!h_dentry) {
+		h_dentry = d_find_any_alias(h_inode);
+		if (IS_ERR(h_dentry)) {
+			err = PTR_ERR(h_dentry);
+			goto out_unlock;
+		}
+	}
+	if (unlikely(!h_dentry))
+		goto out_unlock;
+
+	err = 0;
+	AuDbg("%ps\n", h_inode->i_op->get_link);
+	AuDbgDentry(h_dentry);
+	ret = vfs_get_link(h_dentry, done);
+	dput(h_dentry);
+	if (IS_ERR(ret))
+		err = PTR_ERR(ret);
+
+out_unlock:
+	aufs_read_unlock(dentry, AuLock_IR);
+out:
+	if (unlikely(err))
+		ret = ERR_PTR(err);
+	AuTraceErrPtr(ret);
+	return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_is_special(struct inode *inode)
+{
+	return (inode->i_mode & (S_IFBLK | S_IFCHR | S_IFIFO | S_IFSOCK));
+}
+
+static int aufs_update_time(struct inode *inode, struct timespec64 *ts,
+			    int flags)
+{
+	int err;
+	aufs_bindex_t bindex;
+	struct super_block *sb;
+	struct inode *h_inode;
+	struct vfsmount *h_mnt;
+
+	sb = inode->i_sb;
+	WARN_ONCE((flags & S_ATIME) && !IS_NOATIME(inode),
+		  "unexpected s_flags 0x%lx", sb->s_flags);
+
+	/* mmap_sem might be acquired already, cf. aufs_mmap() */
+	lockdep_off();
+	si_read_lock(sb, AuLock_FLUSH);
+	ii_write_lock_child(inode);
+
+	err = 0;
+	bindex = au_ibtop(inode);
+	h_inode = au_h_iptr(inode, bindex);
+	if (!au_test_ro(sb, bindex, inode)) {
+		h_mnt = au_sbr_mnt(sb, bindex);
+		err = vfsub_mnt_want_write(h_mnt);
+		if (!err) {
+			err = vfsub_update_time(h_inode, ts, flags);
+			vfsub_mnt_drop_write(h_mnt);
+		}
+	} else if (au_is_special(h_inode)) {
+		/*
+		 * Never copy-up here.
+		 * These special files may already be opened and used for
+		 * communicating. If we copied it up, then the communication
+		 * would be corrupted.
+		 */
+		AuWarn1("timestamps for i%lu are ignored "
+			"since it is on readonly branch (hi%lu).\n",
+			inode->i_ino, h_inode->i_ino);
+	} else if (flags & ~S_ATIME) {
+		err = -EIO;
+		AuIOErr1("unexpected flags 0x%x\n", flags);
+		AuDebugOn(1);
+	}
+
+	if (!err)
+		au_cpup_attr_timesizes(inode);
+	ii_write_unlock(inode);
+	si_read_unlock(sb);
+	lockdep_on();
+
+	if (!err && (flags & S_VERSION))
+		inode_inc_iversion(inode);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* no getattr version will be set by module.c:aufs_init() */
+struct inode_operations aufs_iop_nogetattr[AuIop_Last],
+	aufs_iop[] = {
+	[AuIop_SYMLINK] = {
+		.permission	= aufs_permission,
+#ifdef CONFIG_FS_POSIX_ACL
+		.get_acl	= aufs_get_acl,
+		.set_acl	= aufs_set_acl, /* unsupport for symlink? */
+#endif
+
+		.setattr	= aufs_setattr,
+		.getattr	= aufs_getattr,
+
+#ifdef CONFIG_AUFS_XATTR
+		.listxattr	= aufs_listxattr,
+#endif
+
+		.get_link	= aufs_get_link,
+
+		/* .update_time	= aufs_update_time */
+	},
+	[AuIop_DIR] = {
+		.create		= aufs_create,
+		.lookup		= aufs_lookup,
+		.link		= aufs_link,
+		.unlink		= aufs_unlink,
+		.symlink	= aufs_symlink,
+		.mkdir		= aufs_mkdir,
+		.rmdir		= aufs_rmdir,
+		.mknod		= aufs_mknod,
+		.rename		= aufs_rename,
+
+		.permission	= aufs_permission,
+#ifdef CONFIG_FS_POSIX_ACL
+		.get_acl	= aufs_get_acl,
+		.set_acl	= aufs_set_acl,
+#endif
+
+		.setattr	= aufs_setattr,
+		.getattr	= aufs_getattr,
+
+#ifdef CONFIG_AUFS_XATTR
+		.listxattr	= aufs_listxattr,
+#endif
+
+		.update_time	= aufs_update_time,
+		.atomic_open	= aufs_atomic_open,
+		.tmpfile	= aufs_tmpfile
+	},
+	[AuIop_OTHER] = {
+		.permission	= aufs_permission,
+#ifdef CONFIG_FS_POSIX_ACL
+		.get_acl	= aufs_get_acl,
+		.set_acl	= aufs_set_acl,
+#endif
+
+		.setattr	= aufs_setattr,
+		.getattr	= aufs_getattr,
+
+#ifdef CONFIG_AUFS_XATTR
+		.listxattr	= aufs_listxattr,
+#endif
+
+		.update_time	= aufs_update_time
+	}
+};
diff -Naur --no-dereference a/fs/aufs/i_op_del.c b/fs/aufs/i_op_del.c
--- a/fs/aufs/i_op_del.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/i_op_del.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,522 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operations (del entry)
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/*
+ * decide if a new whiteout for @dentry is necessary or not.
+ * when it is necessary, prepare the parent dir for the upper branch whose
+ * branch index is @bcpup for creation. the actual creation of the whiteout will
+ * be done by caller.
+ * return value:
+ * 0: wh is unnecessary
+ * plus: wh is necessary
+ * minus: error
+ */
+int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup)
+{
+	int need_wh, err;
+	aufs_bindex_t btop;
+	struct super_block *sb;
+
+	sb = dentry->d_sb;
+	btop = au_dbtop(dentry);
+	if (*bcpup < 0) {
+		*bcpup = btop;
+		if (au_test_ro(sb, btop, d_inode(dentry))) {
+			err = AuWbrCopyup(au_sbi(sb), dentry);
+			*bcpup = err;
+			if (unlikely(err < 0))
+				goto out;
+		}
+	} else
+		AuDebugOn(btop < *bcpup
+			  || au_test_ro(sb, *bcpup, d_inode(dentry)));
+	AuDbg("bcpup %d, btop %d\n", *bcpup, btop);
+
+	if (*bcpup != btop) {
+		err = au_cpup_dirs(dentry, *bcpup);
+		if (unlikely(err))
+			goto out;
+		need_wh = 1;
+	} else {
+		struct au_dinfo *dinfo, *tmp;
+
+		need_wh = -ENOMEM;
+		dinfo = au_di(dentry);
+		tmp = au_di_alloc(sb, AuLsc_DI_TMP);
+		if (tmp) {
+			au_di_cp(tmp, dinfo);
+			au_di_swap(tmp, dinfo);
+			/* returns the number of positive dentries */
+			need_wh = au_lkup_dentry(dentry, btop + 1,
+						 /* AuLkup_IGNORE_PERM */ 0);
+			au_di_swap(tmp, dinfo);
+			au_rw_write_unlock(&tmp->di_rwsem);
+			au_di_free(tmp);
+		}
+	}
+	AuDbg("need_wh %d\n", need_wh);
+	err = need_wh;
+
+out:
+	return err;
+}
+
+/*
+ * simple tests for the del-entry operations.
+ * following the checks in vfs, plus the parent-child relationship.
+ */
+int au_may_del(struct dentry *dentry, aufs_bindex_t bindex,
+	       struct dentry *h_parent, int isdir)
+{
+	int err;
+	umode_t h_mode;
+	struct dentry *h_dentry, *h_latest;
+	struct inode *h_inode;
+	struct path h_ppath;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct user_namespace *h_userns;
+
+	h_dentry = au_h_dptr(dentry, bindex);
+	if (d_really_is_positive(dentry)) {
+		err = -ENOENT;
+		if (unlikely(d_is_negative(h_dentry)))
+			goto out;
+		h_inode = d_inode(h_dentry);
+		if (unlikely(!h_inode->i_nlink))
+			goto out;
+
+		h_mode = h_inode->i_mode;
+		if (!isdir) {
+			err = -EISDIR;
+			if (unlikely(S_ISDIR(h_mode)))
+				goto out;
+		} else if (unlikely(!S_ISDIR(h_mode))) {
+			err = -ENOTDIR;
+			goto out;
+		}
+	} else {
+		/* rename(2) case */
+		err = -EIO;
+		if (unlikely(d_is_positive(h_dentry)))
+			goto out;
+	}
+
+	err = -ENOENT;
+	/* expected parent dir is locked */
+	if (unlikely(h_parent != h_dentry->d_parent))
+		goto out;
+	err = 0;
+
+	/*
+	 * rmdir a dir may break the consistency on some filesystem.
+	 * let's try heavy test.
+	 */
+	err = -EACCES;
+	sb = dentry->d_sb;
+	br = au_sbr(sb, bindex);
+	h_userns = au_br_userns(br);
+	if (unlikely(!au_opt_test(au_mntflags(sb), DIRPERM1)
+		     && au_test_h_perm(h_userns, d_inode(h_parent),
+				       MAY_EXEC | MAY_WRITE)))
+		goto out;
+
+	h_ppath.dentry = h_parent;
+	h_ppath.mnt = au_br_mnt(br);
+	h_latest = au_sio_lkup_one(h_userns, &dentry->d_name, &h_ppath);
+	err = -EIO;
+	if (IS_ERR(h_latest))
+		goto out;
+	if (h_latest == h_dentry)
+		err = 0;
+	dput(h_latest);
+
+out:
+	return err;
+}
+
+/*
+ * decide the branch where we operate for @dentry. the branch index will be set
+ * @rbcpup. after deciding it, 'pin' it and store the timestamps of the parent
+ * dir for reverting.
+ * when a new whiteout is necessary, create it.
+ */
+static struct dentry*
+lock_hdir_create_wh(struct dentry *dentry, int isdir, aufs_bindex_t *rbcpup,
+		    struct au_dtime *dt, struct au_pin *pin)
+{
+	struct dentry *wh_dentry;
+	struct super_block *sb;
+	struct path h_path;
+	int err, need_wh;
+	unsigned int udba;
+	aufs_bindex_t bcpup;
+
+	need_wh = au_wr_dir_need_wh(dentry, isdir, rbcpup);
+	wh_dentry = ERR_PTR(need_wh);
+	if (unlikely(need_wh < 0))
+		goto out;
+
+	sb = dentry->d_sb;
+	udba = au_opt_udba(sb);
+	bcpup = *rbcpup;
+	err = au_pin(pin, dentry, bcpup, udba,
+		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+	wh_dentry = ERR_PTR(err);
+	if (unlikely(err))
+		goto out;
+
+	h_path.dentry = au_pinned_h_parent(pin);
+	if (udba != AuOpt_UDBA_NONE
+	    && au_dbtop(dentry) == bcpup) {
+		err = au_may_del(dentry, bcpup, h_path.dentry, isdir);
+		wh_dentry = ERR_PTR(err);
+		if (unlikely(err))
+			goto out_unpin;
+	}
+
+	h_path.mnt = au_sbr_mnt(sb, bcpup);
+	au_dtime_store(dt, au_pinned_parent(pin), &h_path);
+	wh_dentry = NULL;
+	if (!need_wh)
+		goto out; /* success, no need to create whiteout */
+
+	wh_dentry = au_wh_create(dentry, bcpup, h_path.dentry);
+	if (IS_ERR(wh_dentry))
+		goto out_unpin;
+
+	/* returns with the parent is locked and wh_dentry is dget-ed */
+	goto out; /* success */
+
+out_unpin:
+	au_unpin(pin);
+out:
+	return wh_dentry;
+}
+
+/*
+ * when removing a dir, rename it to a unique temporary whiteout-ed name first
+ * in order to be revertible and save time for removing many child whiteouts
+ * under the dir.
+ * returns 1 when there are too many child whiteout and caller should remove
+ * them asynchronously. returns 0 when the number of children is enough small to
+ * remove now or the branch fs is a remote fs.
+ * otherwise return an error.
+ */
+static int renwh_and_rmdir(struct dentry *dentry, aufs_bindex_t bindex,
+			   struct au_nhash *whlist, struct inode *dir)
+{
+	int rmdir_later, err, dirwh;
+	struct dentry *h_dentry;
+	struct super_block *sb;
+	struct inode *inode;
+
+	sb = dentry->d_sb;
+	SiMustAnyLock(sb);
+	h_dentry = au_h_dptr(dentry, bindex);
+	err = au_whtmp_ren(h_dentry, au_sbr(sb, bindex));
+	if (unlikely(err))
+		goto out;
+
+	/* stop monitoring */
+	inode = d_inode(dentry);
+	au_hn_free(au_hi(inode, bindex));
+
+	if (!au_test_fs_remote(h_dentry->d_sb)) {
+		dirwh = au_sbi(sb)->si_dirwh;
+		rmdir_later = (dirwh <= 1);
+		if (!rmdir_later)
+			rmdir_later = au_nhash_test_longer_wh(whlist, bindex,
+							      dirwh);
+		if (rmdir_later)
+			return rmdir_later;
+	}
+
+	err = au_whtmp_rmdir(dir, bindex, h_dentry, whlist);
+	if (unlikely(err)) {
+		AuIOErr("rmdir %pd, b%d failed, %d. ignored\n",
+			h_dentry, bindex, err);
+		err = 0;
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/*
+ * final procedure for deleting a entry.
+ * maintain dentry and iattr.
+ */
+static void epilog(struct inode *dir, struct dentry *dentry,
+		   aufs_bindex_t bindex)
+{
+	struct inode *inode;
+
+	inode = d_inode(dentry);
+	d_drop(dentry);
+	inode->i_ctime = dir->i_ctime;
+
+	au_dir_ts(dir, bindex);
+	inode_inc_iversion(dir);
+}
+
+/*
+ * when an error happened, remove the created whiteout and revert everything.
+ */
+static int do_revert(int err, struct inode *dir, aufs_bindex_t bindex,
+		     aufs_bindex_t bwh, struct dentry *wh_dentry,
+		     struct dentry *dentry, struct au_dtime *dt)
+{
+	int rerr;
+	struct path h_path = {
+		.dentry	= wh_dentry,
+		.mnt	= au_sbr_mnt(dir->i_sb, bindex)
+	};
+
+	rerr = au_wh_unlink_dentry(au_h_iptr(dir, bindex), &h_path, dentry);
+	if (!rerr) {
+		au_set_dbwh(dentry, bwh);
+		au_dtime_revert(dt);
+		return 0;
+	}
+
+	AuIOErr("%pd reverting whiteout failed(%d, %d)\n", dentry, err, rerr);
+	return -EIO;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int aufs_unlink(struct inode *dir, struct dentry *dentry)
+{
+	int err;
+	aufs_bindex_t bwh, bindex, btop;
+	struct inode *inode, *h_dir, *delegated;
+	struct dentry *parent, *wh_dentry;
+	/* to reduce stack size */
+	struct {
+		struct au_dtime dt;
+		struct au_pin pin;
+		struct path h_path;
+	} *a;
+
+	IMustLock(dir);
+
+	err = -ENOMEM;
+	a = kmalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+
+	err = aufs_read_lock(dentry, AuLock_DW | AuLock_GEN);
+	if (unlikely(err))
+		goto out_free;
+	err = au_d_hashed_positive(dentry);
+	if (unlikely(err))
+		goto out_unlock;
+	inode = d_inode(dentry);
+	IMustLock(inode);
+	err = -EISDIR;
+	if (unlikely(d_is_dir(dentry)))
+		goto out_unlock; /* possible? */
+
+	btop = au_dbtop(dentry);
+	bwh = au_dbwh(dentry);
+	bindex = -1;
+	parent = dentry->d_parent; /* dir inode is locked */
+	di_write_lock_parent(parent);
+	wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/0, &bindex, &a->dt,
+					&a->pin);
+	err = PTR_ERR(wh_dentry);
+	if (IS_ERR(wh_dentry))
+		goto out_parent;
+
+	a->h_path.mnt = au_sbr_mnt(dentry->d_sb, btop);
+	a->h_path.dentry = au_h_dptr(dentry, btop);
+	dget(a->h_path.dentry);
+	if (bindex == btop) {
+		h_dir = au_pinned_h_dir(&a->pin);
+		delegated = NULL;
+		err = vfsub_unlink(h_dir, &a->h_path, &delegated, /*force*/0);
+		if (unlikely(err == -EWOULDBLOCK)) {
+			pr_warn("cannot retry for NFSv4 delegation"
+				" for an internal unlink\n");
+			iput(delegated);
+		}
+	} else {
+		/* dir inode is locked */
+		h_dir = d_inode(wh_dentry->d_parent);
+		IMustLock(h_dir);
+		err = 0;
+	}
+
+	if (!err) {
+		vfsub_drop_nlink(inode);
+		epilog(dir, dentry, bindex);
+
+		/* update target timestamps */
+		if (bindex == btop) {
+			vfsub_update_h_iattr(&a->h_path, /*did*/NULL);
+			/*ignore*/
+			inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
+		} else
+			/* todo: this timestamp may be reverted later */
+			inode->i_ctime = h_dir->i_ctime;
+		goto out_unpin; /* success */
+	}
+
+	/* revert */
+	if (wh_dentry) {
+		int rerr;
+
+		rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry,
+				 &a->dt);
+		if (rerr)
+			err = rerr;
+	}
+
+out_unpin:
+	au_unpin(&a->pin);
+	dput(wh_dentry);
+	dput(a->h_path.dentry);
+out_parent:
+	di_write_unlock(parent);
+out_unlock:
+	aufs_read_unlock(dentry, AuLock_DW);
+out_free:
+	au_kfree_rcu(a);
+out:
+	return err;
+}
+
+int aufs_rmdir(struct inode *dir, struct dentry *dentry)
+{
+	int err, rmdir_later;
+	aufs_bindex_t bwh, bindex, btop;
+	struct inode *inode;
+	struct dentry *parent, *wh_dentry, *h_dentry;
+	struct au_whtmp_rmdir *args;
+	/* to reduce stack size */
+	struct {
+		struct au_dtime dt;
+		struct au_pin pin;
+	} *a;
+
+	IMustLock(dir);
+
+	err = -ENOMEM;
+	a = kmalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+
+	err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_GEN);
+	if (unlikely(err))
+		goto out_free;
+	err = au_alive_dir(dentry);
+	if (unlikely(err))
+		goto out_unlock;
+	inode = d_inode(dentry);
+	IMustLock(inode);
+	err = -ENOTDIR;
+	if (unlikely(!d_is_dir(dentry)))
+		goto out_unlock; /* possible? */
+
+	err = -ENOMEM;
+	args = au_whtmp_rmdir_alloc(dir->i_sb, GFP_NOFS);
+	if (unlikely(!args))
+		goto out_unlock;
+
+	parent = dentry->d_parent; /* dir inode is locked */
+	di_write_lock_parent(parent);
+	err = au_test_empty(dentry, &args->whlist);
+	if (unlikely(err))
+		goto out_parent;
+
+	btop = au_dbtop(dentry);
+	bwh = au_dbwh(dentry);
+	bindex = -1;
+	wh_dentry = lock_hdir_create_wh(dentry, /*isdir*/1, &bindex, &a->dt,
+					&a->pin);
+	err = PTR_ERR(wh_dentry);
+	if (IS_ERR(wh_dentry))
+		goto out_parent;
+
+	h_dentry = au_h_dptr(dentry, btop);
+	dget(h_dentry);
+	rmdir_later = 0;
+	if (bindex == btop) {
+		err = renwh_and_rmdir(dentry, btop, &args->whlist, dir);
+		if (err > 0) {
+			rmdir_later = err;
+			err = 0;
+		}
+	} else {
+		/* stop monitoring */
+		au_hn_free(au_hi(inode, btop));
+
+		/* dir inode is locked */
+		IMustLock(d_inode(wh_dentry->d_parent));
+		err = 0;
+	}
+
+	if (!err) {
+		vfsub_dead_dir(inode);
+		au_set_dbdiropq(dentry, -1);
+		epilog(dir, dentry, bindex);
+
+		if (rmdir_later) {
+			au_whtmp_kick_rmdir(dir, btop, h_dentry, args);
+			args = NULL;
+		}
+
+		goto out_unpin; /* success */
+	}
+
+	/* revert */
+	AuLabel(revert);
+	if (wh_dentry) {
+		int rerr;
+
+		rerr = do_revert(err, dir, bindex, bwh, wh_dentry, dentry,
+				 &a->dt);
+		if (rerr)
+			err = rerr;
+	}
+
+out_unpin:
+	au_unpin(&a->pin);
+	dput(wh_dentry);
+	dput(h_dentry);
+out_parent:
+	di_write_unlock(parent);
+	if (args)
+		au_whtmp_rmdir_free(args);
+out_unlock:
+	aufs_read_unlock(dentry, AuLock_DW);
+out_free:
+	au_kfree_rcu(a);
+out:
+	AuTraceErr(err);
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/i_op_ren.c b/fs/aufs/i_op_ren.c
--- a/fs/aufs/i_op_ren.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/i_op_ren.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1257 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * inode operation (rename entry)
+ * todo: this is crazy monster
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+enum { AuSRC, AuDST, AuSrcDst };
+enum { AuPARENT, AuCHILD, AuParentChild };
+
+#define AuRen_ISDIR_SRC		1
+#define AuRen_ISDIR_DST		(1 << 1)
+#define AuRen_ISSAMEDIR		(1 << 2)
+#define AuRen_WHSRC		(1 << 3)
+#define AuRen_WHDST		(1 << 4)
+#define AuRen_MNT_WRITE		(1 << 5)
+#define AuRen_DT_DSTDIR		(1 << 6)
+#define AuRen_DIROPQ_SRC	(1 << 7)
+#define AuRen_DIROPQ_DST	(1 << 8)
+#define AuRen_DIRREN		(1 << 9)
+#define AuRen_DROPPED_SRC	(1 << 10)
+#define AuRen_DROPPED_DST	(1 << 11)
+#define au_ftest_ren(flags, name)	((flags) & AuRen_##name)
+#define au_fset_ren(flags, name) \
+	do { (flags) |= AuRen_##name; } while (0)
+#define au_fclr_ren(flags, name) \
+	do { (flags) &= ~AuRen_##name; } while (0)
+
+#ifndef CONFIG_AUFS_DIRREN
+#undef AuRen_DIRREN
+#define AuRen_DIRREN		0
+#endif
+
+struct au_ren_args {
+	struct {
+		struct dentry *dentry, *h_dentry, *parent, *h_parent,
+			*wh_dentry;
+		struct inode *dir, *inode;
+		struct au_hinode *hdir, *hinode;
+		struct au_dtime dt[AuParentChild];
+		aufs_bindex_t btop, bdiropq;
+	} sd[AuSrcDst];
+
+#define src_dentry	sd[AuSRC].dentry
+#define src_dir		sd[AuSRC].dir
+#define src_inode	sd[AuSRC].inode
+#define src_h_dentry	sd[AuSRC].h_dentry
+#define src_parent	sd[AuSRC].parent
+#define src_h_parent	sd[AuSRC].h_parent
+#define src_wh_dentry	sd[AuSRC].wh_dentry
+#define src_hdir	sd[AuSRC].hdir
+#define src_hinode	sd[AuSRC].hinode
+#define src_h_dir	sd[AuSRC].hdir->hi_inode
+#define src_dt		sd[AuSRC].dt
+#define src_btop	sd[AuSRC].btop
+#define src_bdiropq	sd[AuSRC].bdiropq
+
+#define dst_dentry	sd[AuDST].dentry
+#define dst_dir		sd[AuDST].dir
+#define dst_inode	sd[AuDST].inode
+#define dst_h_dentry	sd[AuDST].h_dentry
+#define dst_parent	sd[AuDST].parent
+#define dst_h_parent	sd[AuDST].h_parent
+#define dst_wh_dentry	sd[AuDST].wh_dentry
+#define dst_hdir	sd[AuDST].hdir
+#define dst_hinode	sd[AuDST].hinode
+#define dst_h_dir	sd[AuDST].hdir->hi_inode
+#define dst_dt		sd[AuDST].dt
+#define dst_btop	sd[AuDST].btop
+#define dst_bdiropq	sd[AuDST].bdiropq
+
+	struct dentry *h_trap;
+	struct au_branch *br;
+	struct path h_path;
+	struct au_nhash whlist;
+	aufs_bindex_t btgt, src_bwh;
+
+	struct {
+		unsigned short auren_flags;
+		unsigned char flags;	/* syscall parameter */
+		unsigned char exchange;
+	} __packed;
+
+	struct au_whtmp_rmdir *thargs;
+	struct dentry *h_dst;
+	struct au_hinode *h_root;
+};
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * functions for reverting.
+ * when an error happened in a single rename systemcall, we should revert
+ * everything as if nothing happened.
+ * we don't need to revert the copied-up/down the parent dir since they are
+ * harmless.
+ */
+
+#define RevertFailure(fmt, ...) do { \
+	AuIOErr("revert failure: " fmt " (%d, %d)\n", \
+		##__VA_ARGS__, err, rerr); \
+	err = -EIO; \
+} while (0)
+
+static void au_ren_do_rev_diropq(int err, struct au_ren_args *a, int idx)
+{
+	int rerr;
+	struct dentry *d;
+#define src_or_dst(member) a->sd[idx].member
+
+	d = src_or_dst(dentry); /* {src,dst}_dentry */
+	au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD);
+	rerr = au_diropq_remove(d, a->btgt);
+	au_hn_inode_unlock(src_or_dst(hinode));
+	au_set_dbdiropq(d, src_or_dst(bdiropq));
+	if (rerr)
+		RevertFailure("remove diropq %pd", d);
+
+#undef src_or_dst_
+}
+
+static void au_ren_rev_diropq(int err, struct au_ren_args *a)
+{
+	if (au_ftest_ren(a->auren_flags, DIROPQ_SRC))
+		au_ren_do_rev_diropq(err, a, AuSRC);
+	if (au_ftest_ren(a->auren_flags, DIROPQ_DST))
+		au_ren_do_rev_diropq(err, a, AuDST);
+}
+
+static void au_ren_rev_rename(int err, struct au_ren_args *a)
+{
+	int rerr;
+	struct inode *delegated;
+	struct path h_ppath = {
+		.dentry	= a->src_h_parent,
+		.mnt	= a->h_path.mnt
+	};
+
+	a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name, &h_ppath);
+	rerr = PTR_ERR(a->h_path.dentry);
+	if (IS_ERR(a->h_path.dentry)) {
+		RevertFailure("lkup one %pd", a->src_dentry);
+		return;
+	}
+
+	delegated = NULL;
+	rerr = vfsub_rename(a->dst_h_dir,
+			    au_h_dptr(a->src_dentry, a->btgt),
+			    a->src_h_dir, &a->h_path, &delegated, a->flags);
+	if (unlikely(rerr == -EWOULDBLOCK)) {
+		pr_warn("cannot retry for NFSv4 delegation"
+			" for an internal rename\n");
+		iput(delegated);
+	}
+	d_drop(a->h_path.dentry);
+	dput(a->h_path.dentry);
+	/* au_set_h_dptr(a->src_dentry, a->btgt, NULL); */
+	if (rerr)
+		RevertFailure("rename %pd", a->src_dentry);
+}
+
+static void au_ren_rev_whtmp(int err, struct au_ren_args *a)
+{
+	int rerr;
+	struct inode *delegated;
+	struct path h_ppath = {
+		.dentry	= a->dst_h_parent,
+		.mnt	= a->h_path.mnt
+	};
+
+	a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name, &h_ppath);
+	rerr = PTR_ERR(a->h_path.dentry);
+	if (IS_ERR(a->h_path.dentry)) {
+		RevertFailure("lkup one %pd", a->dst_dentry);
+		return;
+	}
+	if (d_is_positive(a->h_path.dentry)) {
+		d_drop(a->h_path.dentry);
+		dput(a->h_path.dentry);
+		return;
+	}
+
+	delegated = NULL;
+	rerr = vfsub_rename(a->dst_h_dir, a->h_dst, a->dst_h_dir, &a->h_path,
+			    &delegated, a->flags);
+	if (unlikely(rerr == -EWOULDBLOCK)) {
+		pr_warn("cannot retry for NFSv4 delegation"
+			" for an internal rename\n");
+		iput(delegated);
+	}
+	d_drop(a->h_path.dentry);
+	dput(a->h_path.dentry);
+	if (!rerr)
+		au_set_h_dptr(a->dst_dentry, a->btgt, dget(a->h_dst));
+	else
+		RevertFailure("rename %pd", a->h_dst);
+}
+
+static void au_ren_rev_whsrc(int err, struct au_ren_args *a)
+{
+	int rerr;
+
+	a->h_path.dentry = a->src_wh_dentry;
+	rerr = au_wh_unlink_dentry(a->src_h_dir, &a->h_path, a->src_dentry);
+	au_set_dbwh(a->src_dentry, a->src_bwh);
+	if (rerr)
+		RevertFailure("unlink %pd", a->src_wh_dentry);
+}
+#undef RevertFailure
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * when we have to copyup the renaming entry, do it with the rename-target name
+ * in order to minimize the cost (the later actual rename is unnecessary).
+ * otherwise rename it on the target branch.
+ */
+static int au_ren_or_cpup(struct au_ren_args *a)
+{
+	int err;
+	struct dentry *d;
+	struct inode *delegated;
+
+	d = a->src_dentry;
+	if (au_dbtop(d) == a->btgt) {
+		a->h_path.dentry = a->dst_h_dentry;
+		AuDebugOn(au_dbtop(d) != a->btgt);
+		delegated = NULL;
+		err = vfsub_rename(a->src_h_dir, au_h_dptr(d, a->btgt),
+				   a->dst_h_dir, &a->h_path, &delegated,
+				   a->flags);
+		if (unlikely(err == -EWOULDBLOCK)) {
+			pr_warn("cannot retry for NFSv4 delegation"
+				" for an internal rename\n");
+			iput(delegated);
+		}
+	} else
+		BUG();
+
+	if (!err && a->h_dst)
+		/* it will be set to dinfo later */
+		dget(a->h_dst);
+
+	return err;
+}
+
+/* cf. aufs_rmdir() */
+static int au_ren_del_whtmp(struct au_ren_args *a)
+{
+	int err;
+	struct inode *dir;
+
+	dir = a->dst_dir;
+	SiMustAnyLock(dir->i_sb);
+	if (!au_nhash_test_longer_wh(&a->whlist, a->btgt,
+				     au_sbi(dir->i_sb)->si_dirwh)
+	    || au_test_fs_remote(a->h_dst->d_sb)) {
+		err = au_whtmp_rmdir(dir, a->btgt, a->h_dst, &a->whlist);
+		if (unlikely(err))
+			pr_warn("failed removing whtmp dir %pd (%d), "
+				"ignored.\n", a->h_dst, err);
+	} else {
+		au_nhash_wh_free(&a->thargs->whlist);
+		a->thargs->whlist = a->whlist;
+		a->whlist.nh_num = 0;
+		au_whtmp_kick_rmdir(dir, a->btgt, a->h_dst, a->thargs);
+		dput(a->h_dst);
+		a->thargs = NULL;
+	}
+
+	return 0;
+}
+
+/* make it 'opaque' dir. */
+static int au_ren_do_diropq(struct au_ren_args *a, int idx)
+{
+	int err;
+	struct dentry *d, *diropq;
+#define src_or_dst(member) a->sd[idx].member
+
+	err = 0;
+	d = src_or_dst(dentry); /* {src,dst}_dentry */
+	src_or_dst(bdiropq) = au_dbdiropq(d);
+	src_or_dst(hinode) = au_hi(src_or_dst(inode), a->btgt);
+	au_hn_inode_lock_nested(src_or_dst(hinode), AuLsc_I_CHILD);
+	diropq = au_diropq_create(d, a->btgt);
+	au_hn_inode_unlock(src_or_dst(hinode));
+	if (IS_ERR(diropq))
+		err = PTR_ERR(diropq);
+	else
+		dput(diropq);
+
+#undef src_or_dst_
+	return err;
+}
+
+static int au_ren_diropq(struct au_ren_args *a)
+{
+	int err;
+	unsigned char always;
+	struct dentry *d;
+
+	err = 0;
+	d = a->dst_dentry; /* already renamed on the branch */
+	always = !!au_opt_test(au_mntflags(d->d_sb), ALWAYS_DIROPQ);
+	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)
+	    && !au_ftest_ren(a->auren_flags, DIRREN)
+	    && a->btgt != au_dbdiropq(a->src_dentry)
+	    && (a->dst_wh_dentry
+		|| a->btgt <= au_dbdiropq(d)
+		/* hide the lower to keep xino */
+		/* the lowers may not be a dir, but we hide them anyway */
+		|| a->btgt < au_dbbot(d)
+		|| always)) {
+		AuDbg("here\n");
+		err = au_ren_do_diropq(a, AuSRC);
+		if (unlikely(err))
+			goto out;
+		au_fset_ren(a->auren_flags, DIROPQ_SRC);
+	}
+	if (!a->exchange)
+		goto out; /* success */
+
+	d = a->src_dentry; /* already renamed on the branch */
+	if (au_ftest_ren(a->auren_flags, ISDIR_DST)
+	    && a->btgt != au_dbdiropq(a->dst_dentry)
+	    && (a->btgt < au_dbdiropq(d)
+		|| a->btgt < au_dbbot(d)
+		|| always)) {
+		AuDbgDentry(a->src_dentry);
+		AuDbgDentry(a->dst_dentry);
+		err = au_ren_do_diropq(a, AuDST);
+		if (unlikely(err))
+			goto out_rev_src;
+		au_fset_ren(a->auren_flags, DIROPQ_DST);
+	}
+	goto out; /* success */
+
+out_rev_src:
+	AuDbg("err %d, reverting src\n", err);
+	au_ren_rev_diropq(err, a);
+out:
+	return err;
+}
+
+static int do_rename(struct au_ren_args *a)
+{
+	int err;
+	struct dentry *d, *h_d;
+
+	if (!a->exchange) {
+		/* prepare workqueue args for asynchronous rmdir */
+		h_d = a->dst_h_dentry;
+		if (au_ftest_ren(a->auren_flags, ISDIR_DST)
+		    /* && !au_ftest_ren(a->auren_flags, DIRREN) */
+		    && d_is_positive(h_d)) {
+			err = -ENOMEM;
+			a->thargs = au_whtmp_rmdir_alloc(a->src_dentry->d_sb,
+							 GFP_NOFS);
+			if (unlikely(!a->thargs))
+				goto out;
+			a->h_dst = dget(h_d);
+		}
+
+		/* create whiteout for src_dentry */
+		if (au_ftest_ren(a->auren_flags, WHSRC)) {
+			a->src_bwh = au_dbwh(a->src_dentry);
+			AuDebugOn(a->src_bwh >= 0);
+			a->src_wh_dentry = au_wh_create(a->src_dentry, a->btgt,
+							a->src_h_parent);
+			err = PTR_ERR(a->src_wh_dentry);
+			if (IS_ERR(a->src_wh_dentry))
+				goto out_thargs;
+		}
+
+		/* lookup whiteout for dentry */
+		if (au_ftest_ren(a->auren_flags, WHDST)) {
+			h_d = au_wh_lkup(a->dst_h_parent,
+					 &a->dst_dentry->d_name, a->br);
+			err = PTR_ERR(h_d);
+			if (IS_ERR(h_d))
+				goto out_whsrc;
+			if (d_is_negative(h_d))
+				dput(h_d);
+			else
+				a->dst_wh_dentry = h_d;
+		}
+
+		/* rename dentry to tmpwh */
+		if (a->thargs) {
+			err = au_whtmp_ren(a->dst_h_dentry, a->br);
+			if (unlikely(err))
+				goto out_whdst;
+
+			d = a->dst_dentry;
+			au_set_h_dptr(d, a->btgt, NULL);
+			err = au_lkup_neg(d, a->btgt, /*wh*/0);
+			if (unlikely(err))
+				goto out_whtmp;
+			a->dst_h_dentry = au_h_dptr(d, a->btgt);
+		}
+	}
+
+	BUG_ON(d_is_positive(a->dst_h_dentry) && a->src_btop != a->btgt);
+#if 0 /* debugging */
+	BUG_ON(!au_ftest_ren(a->auren_flags, DIRREN)
+	       && d_is_positive(a->dst_h_dentry)
+	       && a->src_btop != a->btgt);
+#endif
+
+	/* rename by vfs_rename or cpup */
+	err = au_ren_or_cpup(a);
+	if (unlikely(err))
+		/* leave the copied-up one */
+		goto out_whtmp;
+
+	/* make dir opaque */
+	err = au_ren_diropq(a);
+	if (unlikely(err))
+		goto out_rename;
+
+	/* update target timestamps */
+	if (a->exchange) {
+		AuDebugOn(au_dbtop(a->dst_dentry) != a->btgt);
+		a->h_path.dentry = au_h_dptr(a->dst_dentry, a->btgt);
+		vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/
+		a->dst_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
+	}
+	AuDebugOn(au_dbtop(a->src_dentry) != a->btgt);
+	a->h_path.dentry = au_h_dptr(a->src_dentry, a->btgt);
+	vfsub_update_h_iattr(&a->h_path, /*did*/NULL); /*ignore*/
+	a->src_inode->i_ctime = d_inode(a->h_path.dentry)->i_ctime;
+
+	if (!a->exchange) {
+		/* remove whiteout for dentry */
+		if (a->dst_wh_dentry) {
+			a->h_path.dentry = a->dst_wh_dentry;
+			err = au_wh_unlink_dentry(a->dst_h_dir, &a->h_path,
+						  a->dst_dentry);
+			if (unlikely(err))
+				goto out_diropq;
+		}
+
+		/* remove whtmp */
+		if (a->thargs)
+			au_ren_del_whtmp(a); /* ignore this error */
+
+		au_fhsm_wrote(a->src_dentry->d_sb, a->btgt, /*force*/0);
+	}
+	err = 0;
+	goto out_success;
+
+out_diropq:
+	au_ren_rev_diropq(err, a);
+out_rename:
+	au_ren_rev_rename(err, a);
+	dput(a->h_dst);
+out_whtmp:
+	if (a->thargs)
+		au_ren_rev_whtmp(err, a);
+out_whdst:
+	dput(a->dst_wh_dentry);
+	a->dst_wh_dentry = NULL;
+out_whsrc:
+	if (a->src_wh_dentry)
+		au_ren_rev_whsrc(err, a);
+out_success:
+	dput(a->src_wh_dentry);
+	dput(a->dst_wh_dentry);
+out_thargs:
+	if (a->thargs) {
+		dput(a->h_dst);
+		au_whtmp_rmdir_free(a->thargs);
+		a->thargs = NULL;
+	}
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * test if @dentry dir can be rename destination or not.
+ * success means, it is a logically empty dir.
+ */
+static int may_rename_dstdir(struct dentry *dentry, struct au_nhash *whlist)
+{
+	return au_test_empty(dentry, whlist);
+}
+
+/*
+ * test if @a->src_dentry dir can be rename source or not.
+ * if it can, return 0.
+ * success means,
+ * - it is a logically empty dir.
+ * - or, it exists on writable branch and has no children including whiteouts
+ *   on the lower branch unless DIRREN is on.
+ */
+static int may_rename_srcdir(struct au_ren_args *a)
+{
+	int err;
+	unsigned int rdhash;
+	aufs_bindex_t btop, btgt;
+	struct dentry *dentry;
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+
+	dentry = a->src_dentry;
+	sb = dentry->d_sb;
+	sbinfo = au_sbi(sb);
+	if (au_opt_test(sbinfo->si_mntflags, DIRREN))
+		au_fset_ren(a->auren_flags, DIRREN);
+
+	btgt = a->btgt;
+	btop = au_dbtop(dentry);
+	if (btop != btgt) {
+		struct au_nhash whlist;
+
+		SiMustAnyLock(sb);
+		rdhash = sbinfo->si_rdhash;
+		if (!rdhash)
+			rdhash = au_rdhash_est(au_dir_size(/*file*/NULL,
+							   dentry));
+		err = au_nhash_alloc(&whlist, rdhash, GFP_NOFS);
+		if (unlikely(err))
+			goto out;
+		err = au_test_empty(dentry, &whlist);
+		au_nhash_wh_free(&whlist);
+		goto out;
+	}
+
+	if (btop == au_dbtaildir(dentry))
+		return 0; /* success */
+
+	err = au_test_empty_lower(dentry);
+
+out:
+	if (err == -ENOTEMPTY) {
+		if (au_ftest_ren(a->auren_flags, DIRREN)) {
+			err = 0;
+		} else {
+			AuWarn1("renaming dir who has child(ren) on multiple "
+				"branches, is not supported\n");
+			err = -EXDEV;
+		}
+	}
+	return err;
+}
+
+/* side effect: sets whlist and h_dentry */
+static int au_ren_may_dir(struct au_ren_args *a)
+{
+	int err;
+	unsigned int rdhash;
+	struct dentry *d;
+
+	d = a->dst_dentry;
+	SiMustAnyLock(d->d_sb);
+
+	err = 0;
+	if (au_ftest_ren(a->auren_flags, ISDIR_DST) && a->dst_inode) {
+		rdhash = au_sbi(d->d_sb)->si_rdhash;
+		if (!rdhash)
+			rdhash = au_rdhash_est(au_dir_size(/*file*/NULL, d));
+		err = au_nhash_alloc(&a->whlist, rdhash, GFP_NOFS);
+		if (unlikely(err))
+			goto out;
+
+		if (!a->exchange) {
+			au_set_dbtop(d, a->dst_btop);
+			err = may_rename_dstdir(d, &a->whlist);
+			au_set_dbtop(d, a->btgt);
+		} else
+			err = may_rename_srcdir(a);
+	}
+	a->dst_h_dentry = au_h_dptr(d, au_dbtop(d));
+	if (unlikely(err))
+		goto out;
+
+	d = a->src_dentry;
+	a->src_h_dentry = au_h_dptr(d, au_dbtop(d));
+	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) {
+		err = may_rename_srcdir(a);
+		if (unlikely(err)) {
+			au_nhash_wh_free(&a->whlist);
+			a->whlist.nh_num = 0;
+		}
+	}
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * simple tests for rename.
+ * following the checks in vfs, plus the parent-child relationship.
+ */
+static int au_may_ren(struct au_ren_args *a)
+{
+	int err, isdir;
+	struct inode *h_inode;
+
+	if (a->src_btop == a->btgt) {
+		err = au_may_del(a->src_dentry, a->btgt, a->src_h_parent,
+				 au_ftest_ren(a->auren_flags, ISDIR_SRC));
+		if (unlikely(err))
+			goto out;
+		err = -EINVAL;
+		if (unlikely(a->src_h_dentry == a->h_trap))
+			goto out;
+	}
+
+	err = 0;
+	if (a->dst_btop != a->btgt)
+		goto out;
+
+	err = -ENOTEMPTY;
+	if (unlikely(a->dst_h_dentry == a->h_trap))
+		goto out;
+
+	err = -EIO;
+	isdir = !!au_ftest_ren(a->auren_flags, ISDIR_DST);
+	if (d_really_is_negative(a->dst_dentry)) {
+		if (d_is_negative(a->dst_h_dentry))
+			err = au_may_add(a->dst_dentry, a->btgt,
+					 a->dst_h_parent, isdir);
+	} else {
+		if (unlikely(d_is_negative(a->dst_h_dentry)))
+			goto out;
+		h_inode = d_inode(a->dst_h_dentry);
+		if (h_inode->i_nlink)
+			err = au_may_del(a->dst_dentry, a->btgt,
+					 a->dst_h_parent, isdir);
+	}
+
+out:
+	if (unlikely(err == -ENOENT || err == -EEXIST))
+		err = -EIO;
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * locking order
+ * (VFS)
+ * - src_dir and dir by lock_rename()
+ * - inode if exists
+ * (aufs)
+ * - lock all
+ *   + src_dentry and dentry by aufs_read_and_write_lock2() which calls,
+ *     + si_read_lock
+ *     + di_write_lock2_child()
+ *       + di_write_lock_child()
+ *	   + ii_write_lock_child()
+ *       + di_write_lock_child2()
+ *	   + ii_write_lock_child2()
+ *     + src_parent and parent
+ *       + di_write_lock_parent()
+ *	   + ii_write_lock_parent()
+ *       + di_write_lock_parent2()
+ *	   + ii_write_lock_parent2()
+ *   + lower src_dir and dir by vfsub_lock_rename()
+ *   + verify the every relationships between child and parent. if any
+ *     of them failed, unlock all and return -EBUSY.
+ */
+static void au_ren_unlock(struct au_ren_args *a)
+{
+	vfsub_unlock_rename(a->src_h_parent, a->src_hdir,
+			    a->dst_h_parent, a->dst_hdir);
+	if (au_ftest_ren(a->auren_flags, DIRREN)
+	    && a->h_root)
+		au_hn_inode_unlock(a->h_root);
+	if (au_ftest_ren(a->auren_flags, MNT_WRITE))
+		vfsub_mnt_drop_write(au_br_mnt(a->br));
+}
+
+static int au_ren_lock(struct au_ren_args *a)
+{
+	int err;
+	unsigned int udba;
+
+	err = 0;
+	a->src_h_parent = au_h_dptr(a->src_parent, a->btgt);
+	a->src_hdir = au_hi(a->src_dir, a->btgt);
+	a->dst_h_parent = au_h_dptr(a->dst_parent, a->btgt);
+	a->dst_hdir = au_hi(a->dst_dir, a->btgt);
+
+	err = vfsub_mnt_want_write(au_br_mnt(a->br));
+	if (unlikely(err))
+		goto out;
+	au_fset_ren(a->auren_flags, MNT_WRITE);
+	if (au_ftest_ren(a->auren_flags, DIRREN)) {
+		struct dentry *root;
+		struct inode *dir;
+
+		/*
+		 * sbinfo is already locked, so this ii_read_lock is
+		 * unnecessary. but our debugging feature checks it.
+		 */
+		root = a->src_inode->i_sb->s_root;
+		if (root != a->src_parent && root != a->dst_parent) {
+			dir = d_inode(root);
+			ii_read_lock_parent3(dir);
+			a->h_root = au_hi(dir, a->btgt);
+			ii_read_unlock(dir);
+			au_hn_inode_lock_nested(a->h_root, AuLsc_I_PARENT3);
+		}
+	}
+	a->h_trap = vfsub_lock_rename(a->src_h_parent, a->src_hdir,
+				      a->dst_h_parent, a->dst_hdir);
+	udba = au_opt_udba(a->src_dentry->d_sb);
+	if (unlikely(a->src_hdir->hi_inode != d_inode(a->src_h_parent)
+		     || a->dst_hdir->hi_inode != d_inode(a->dst_h_parent)))
+		err = au_busy_or_stale();
+	if (!err && au_dbtop(a->src_dentry) == a->btgt)
+		err = au_h_verify(a->src_h_dentry, udba,
+				  d_inode(a->src_h_parent), a->src_h_parent,
+				  a->br);
+	if (!err && au_dbtop(a->dst_dentry) == a->btgt)
+		err = au_h_verify(a->dst_h_dentry, udba,
+				  d_inode(a->dst_h_parent), a->dst_h_parent,
+				  a->br);
+	if (!err)
+		goto out; /* success */
+
+	err = au_busy_or_stale();
+	au_ren_unlock(a);
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void au_ren_refresh_dir(struct au_ren_args *a)
+{
+	struct inode *dir;
+
+	dir = a->dst_dir;
+	inode_inc_iversion(dir);
+	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)) {
+		/* is this updating defined in POSIX? */
+		au_cpup_attr_timesizes(a->src_inode);
+		au_cpup_attr_nlink(dir, /*force*/1);
+	}
+	au_dir_ts(dir, a->btgt);
+
+	if (a->exchange) {
+		dir = a->src_dir;
+		inode_inc_iversion(dir);
+		if (au_ftest_ren(a->auren_flags, ISDIR_DST)) {
+			/* is this updating defined in POSIX? */
+			au_cpup_attr_timesizes(a->dst_inode);
+			au_cpup_attr_nlink(dir, /*force*/1);
+		}
+		au_dir_ts(dir, a->btgt);
+	}
+
+	if (au_ftest_ren(a->auren_flags, ISSAMEDIR))
+		return;
+
+	dir = a->src_dir;
+	inode_inc_iversion(dir);
+	if (au_ftest_ren(a->auren_flags, ISDIR_SRC))
+		au_cpup_attr_nlink(dir, /*force*/1);
+	au_dir_ts(dir, a->btgt);
+}
+
+static void au_ren_refresh(struct au_ren_args *a)
+{
+	aufs_bindex_t bbot, bindex;
+	struct dentry *d, *h_d;
+	struct inode *i, *h_i;
+	struct super_block *sb;
+
+	d = a->dst_dentry;
+	d_drop(d);
+	if (a->h_dst)
+		/* already dget-ed by au_ren_or_cpup() */
+		au_set_h_dptr(d, a->btgt, a->h_dst);
+
+	i = a->dst_inode;
+	if (i) {
+		if (!a->exchange) {
+			if (!au_ftest_ren(a->auren_flags, ISDIR_DST))
+				vfsub_drop_nlink(i);
+			else {
+				vfsub_dead_dir(i);
+				au_cpup_attr_timesizes(i);
+			}
+			au_update_dbrange(d, /*do_put_zero*/1);
+		} else
+			au_cpup_attr_nlink(i, /*force*/1);
+	} else {
+		bbot = a->btgt;
+		for (bindex = au_dbtop(d); bindex < bbot; bindex++)
+			au_set_h_dptr(d, bindex, NULL);
+		bbot = au_dbbot(d);
+		for (bindex = a->btgt + 1; bindex <= bbot; bindex++)
+			au_set_h_dptr(d, bindex, NULL);
+		au_update_dbrange(d, /*do_put_zero*/0);
+	}
+
+	if (a->exchange
+	    || au_ftest_ren(a->auren_flags, DIRREN)) {
+		d_drop(a->src_dentry);
+		if (au_ftest_ren(a->auren_flags, DIRREN))
+			au_set_dbwh(a->src_dentry, -1);
+		return;
+	}
+
+	d = a->src_dentry;
+	au_set_dbwh(d, -1);
+	bbot = au_dbbot(d);
+	for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
+		h_d = au_h_dptr(d, bindex);
+		if (h_d)
+			au_set_h_dptr(d, bindex, NULL);
+	}
+	au_set_dbbot(d, a->btgt);
+
+	sb = d->d_sb;
+	i = a->src_inode;
+	if (au_opt_test(au_mntflags(sb), PLINK) && au_plink_test(i))
+		return; /* success */
+
+	bbot = au_ibbot(i);
+	for (bindex = a->btgt + 1; bindex <= bbot; bindex++) {
+		h_i = au_h_iptr(i, bindex);
+		if (h_i) {
+			au_xino_write(sb, bindex, h_i->i_ino, /*ino*/0);
+			/* ignore this error */
+			au_set_h_iptr(i, bindex, NULL, 0);
+		}
+	}
+	au_set_ibbot(i, a->btgt);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* mainly for link(2) and rename(2) */
+int au_wbr(struct dentry *dentry, aufs_bindex_t btgt)
+{
+	aufs_bindex_t bdiropq, bwh;
+	struct dentry *parent;
+	struct au_branch *br;
+
+	parent = dentry->d_parent;
+	IMustLock(d_inode(parent)); /* dir is locked */
+
+	bdiropq = au_dbdiropq(parent);
+	bwh = au_dbwh(dentry);
+	br = au_sbr(dentry->d_sb, btgt);
+	if (au_br_rdonly(br)
+	    || (0 <= bdiropq && bdiropq < btgt)
+	    || (0 <= bwh && bwh < btgt))
+		btgt = -1;
+
+	AuDbg("btgt %d\n", btgt);
+	return btgt;
+}
+
+/* sets src_btop, dst_btop and btgt */
+static int au_ren_wbr(struct au_ren_args *a)
+{
+	int err;
+	struct au_wr_dir_args wr_dir_args = {
+		/* .force_btgt	= -1, */
+		.flags		= AuWrDir_ADD_ENTRY
+	};
+
+	a->src_btop = au_dbtop(a->src_dentry);
+	a->dst_btop = au_dbtop(a->dst_dentry);
+	if (au_ftest_ren(a->auren_flags, ISDIR_SRC)
+	    || au_ftest_ren(a->auren_flags, ISDIR_DST))
+		au_fset_wrdir(wr_dir_args.flags, ISDIR);
+	wr_dir_args.force_btgt = a->src_btop;
+	if (a->dst_inode && a->dst_btop < a->src_btop)
+		wr_dir_args.force_btgt = a->dst_btop;
+	wr_dir_args.force_btgt = au_wbr(a->dst_dentry, wr_dir_args.force_btgt);
+	err = au_wr_dir(a->dst_dentry, a->src_dentry, &wr_dir_args);
+	a->btgt = err;
+	if (a->exchange)
+		au_update_dbtop(a->dst_dentry);
+
+	return err;
+}
+
+static void au_ren_dt(struct au_ren_args *a)
+{
+	a->h_path.dentry = a->src_h_parent;
+	au_dtime_store(a->src_dt + AuPARENT, a->src_parent, &a->h_path);
+	if (!au_ftest_ren(a->auren_flags, ISSAMEDIR)) {
+		a->h_path.dentry = a->dst_h_parent;
+		au_dtime_store(a->dst_dt + AuPARENT, a->dst_parent, &a->h_path);
+	}
+
+	au_fclr_ren(a->auren_flags, DT_DSTDIR);
+	if (!au_ftest_ren(a->auren_flags, ISDIR_SRC)
+	    && !a->exchange)
+		return;
+
+	a->h_path.dentry = a->src_h_dentry;
+	au_dtime_store(a->src_dt + AuCHILD, a->src_dentry, &a->h_path);
+	if (d_is_positive(a->dst_h_dentry)) {
+		au_fset_ren(a->auren_flags, DT_DSTDIR);
+		a->h_path.dentry = a->dst_h_dentry;
+		au_dtime_store(a->dst_dt + AuCHILD, a->dst_dentry, &a->h_path);
+	}
+}
+
+static void au_ren_rev_dt(int err, struct au_ren_args *a)
+{
+	struct dentry *h_d;
+	struct inode *h_inode;
+
+	au_dtime_revert(a->src_dt + AuPARENT);
+	if (!au_ftest_ren(a->auren_flags, ISSAMEDIR))
+		au_dtime_revert(a->dst_dt + AuPARENT);
+
+	if (au_ftest_ren(a->auren_flags, ISDIR_SRC) && err != -EIO) {
+		h_d = a->src_dt[AuCHILD].dt_h_path.dentry;
+		h_inode = d_inode(h_d);
+		inode_lock_nested(h_inode, AuLsc_I_CHILD);
+		au_dtime_revert(a->src_dt + AuCHILD);
+		inode_unlock(h_inode);
+
+		if (au_ftest_ren(a->auren_flags, DT_DSTDIR)) {
+			h_d = a->dst_dt[AuCHILD].dt_h_path.dentry;
+			h_inode = d_inode(h_d);
+			inode_lock_nested(h_inode, AuLsc_I_CHILD);
+			au_dtime_revert(a->dst_dt + AuCHILD);
+			inode_unlock(h_inode);
+		}
+	}
+}
+
+/* ---------------------------------------------------------------------- */
+
+int aufs_rename(struct user_namespace *userns,
+		struct inode *_src_dir, struct dentry *_src_dentry,
+		struct inode *_dst_dir, struct dentry *_dst_dentry,
+		unsigned int _flags)
+{
+	int err, lock_flags;
+	void *rev;
+	/* reduce stack space */
+	struct au_ren_args *a;
+	struct au_pin pin;
+
+	AuDbg("%pd, %pd, 0x%x\n", _src_dentry, _dst_dentry, _flags);
+	IMustLock(_src_dir);
+	IMustLock(_dst_dir);
+
+	err = -EINVAL;
+	if (unlikely(_flags & RENAME_WHITEOUT))
+		goto out;
+
+	err = -ENOMEM;
+	BUILD_BUG_ON(sizeof(*a) > PAGE_SIZE);
+	a = kzalloc(sizeof(*a), GFP_NOFS);
+	if (unlikely(!a))
+		goto out;
+
+	a->flags = _flags;
+	BUILD_BUG_ON(sizeof(a->exchange) == sizeof(u8)
+		     && RENAME_EXCHANGE > U8_MAX);
+	a->exchange = _flags & RENAME_EXCHANGE;
+	a->src_dir = _src_dir;
+	a->src_dentry = _src_dentry;
+	a->src_inode = NULL;
+	if (d_really_is_positive(a->src_dentry))
+		a->src_inode = d_inode(a->src_dentry);
+	a->src_parent = a->src_dentry->d_parent; /* dir inode is locked */
+	a->dst_dir = _dst_dir;
+	a->dst_dentry = _dst_dentry;
+	a->dst_inode = NULL;
+	if (d_really_is_positive(a->dst_dentry))
+		a->dst_inode = d_inode(a->dst_dentry);
+	a->dst_parent = a->dst_dentry->d_parent; /* dir inode is locked */
+	if (a->dst_inode) {
+		/*
+		 * if EXCHANGE && src is non-dir && dst is dir,
+		 * dst is not locked.
+		 */
+		/* IMustLock(a->dst_inode); */
+		au_igrab(a->dst_inode);
+	}
+
+	err = -ENOTDIR;
+	lock_flags = AuLock_FLUSH | AuLock_NOPLM | AuLock_GEN;
+	if (d_is_dir(a->src_dentry)) {
+		au_fset_ren(a->auren_flags, ISDIR_SRC);
+		if (unlikely(!a->exchange
+			     && d_really_is_positive(a->dst_dentry)
+			     && !d_is_dir(a->dst_dentry)))
+			goto out_free;
+		lock_flags |= AuLock_DIRS;
+	}
+	if (a->dst_inode && d_is_dir(a->dst_dentry)) {
+		au_fset_ren(a->auren_flags, ISDIR_DST);
+		if (unlikely(!a->exchange
+			     && d_really_is_positive(a->src_dentry)
+			     && !d_is_dir(a->src_dentry)))
+			goto out_free;
+		lock_flags |= AuLock_DIRS;
+	}
+	err = aufs_read_and_write_lock2(a->dst_dentry, a->src_dentry,
+					lock_flags);
+	if (unlikely(err))
+		goto out_free;
+
+	err = au_d_hashed_positive(a->src_dentry);
+	if (unlikely(err))
+		goto out_unlock;
+	err = -ENOENT;
+	if (a->dst_inode) {
+		/*
+		 * If it is a dir, VFS unhash it before this
+		 * function. It means we cannot rely upon d_unhashed().
+		 */
+		if (unlikely(!a->dst_inode->i_nlink))
+			goto out_unlock;
+		if (!au_ftest_ren(a->auren_flags, ISDIR_DST)) {
+			err = au_d_hashed_positive(a->dst_dentry);
+			if (unlikely(err && !a->exchange))
+				goto out_unlock;
+		} else if (unlikely(IS_DEADDIR(a->dst_inode)))
+			goto out_unlock;
+	} else if (unlikely(d_unhashed(a->dst_dentry)))
+		goto out_unlock;
+
+	/*
+	 * is it possible?
+	 * yes, it happened (in linux-3.3-rcN) but I don't know why.
+	 * there may exist a problem somewhere else.
+	 */
+	err = -EINVAL;
+	if (unlikely(d_inode(a->dst_parent) == d_inode(a->src_dentry)))
+		goto out_unlock;
+
+	au_fset_ren(a->auren_flags, ISSAMEDIR); /* temporary */
+	di_write_lock_parent(a->dst_parent);
+
+	/* which branch we process */
+	err = au_ren_wbr(a);
+	if (unlikely(err < 0))
+		goto out_parent;
+	a->br = au_sbr(a->dst_dentry->d_sb, a->btgt);
+	a->h_path.mnt = au_br_mnt(a->br);
+
+	/* are they available to be renamed */
+	err = au_ren_may_dir(a);
+	if (unlikely(err))
+		goto out_children;
+
+	/* prepare the writable parent dir on the same branch */
+	if (a->dst_btop == a->btgt) {
+		au_fset_ren(a->auren_flags, WHDST);
+	} else {
+		err = au_cpup_dirs(a->dst_dentry, a->btgt);
+		if (unlikely(err))
+			goto out_children;
+	}
+
+	err = 0;
+	if (!a->exchange) {
+		if (a->src_dir != a->dst_dir) {
+			/*
+			 * this temporary unlock is safe,
+			 * because both dir->i_mutex are locked.
+			 */
+			di_write_unlock(a->dst_parent);
+			di_write_lock_parent(a->src_parent);
+			err = au_wr_dir_need_wh(a->src_dentry,
+						au_ftest_ren(a->auren_flags,
+							     ISDIR_SRC),
+						&a->btgt);
+			di_write_unlock(a->src_parent);
+			di_write_lock2_parent(a->src_parent, a->dst_parent,
+					      /*isdir*/1);
+			au_fclr_ren(a->auren_flags, ISSAMEDIR);
+		} else
+			err = au_wr_dir_need_wh(a->src_dentry,
+						au_ftest_ren(a->auren_flags,
+							     ISDIR_SRC),
+						&a->btgt);
+	}
+	if (unlikely(err < 0))
+		goto out_children;
+	if (err)
+		au_fset_ren(a->auren_flags, WHSRC);
+
+	/* cpup src */
+	if (a->src_btop != a->btgt) {
+		err = au_pin(&pin, a->src_dentry, a->btgt,
+			     au_opt_udba(a->src_dentry->d_sb),
+			     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+		if (!err) {
+			struct au_cp_generic cpg = {
+				.dentry	= a->src_dentry,
+				.bdst	= a->btgt,
+				.bsrc	= a->src_btop,
+				.len	= -1,
+				.pin	= &pin,
+				.flags	= AuCpup_DTIME | AuCpup_HOPEN
+			};
+			AuDebugOn(au_dbtop(a->src_dentry) != a->src_btop);
+			err = au_sio_cpup_simple(&cpg);
+			au_unpin(&pin);
+		}
+		if (unlikely(err))
+			goto out_children;
+		a->src_btop = a->btgt;
+		a->src_h_dentry = au_h_dptr(a->src_dentry, a->btgt);
+		if (!a->exchange)
+			au_fset_ren(a->auren_flags, WHSRC);
+	}
+
+	/* cpup dst */
+	if (a->exchange && a->dst_inode
+	    && a->dst_btop != a->btgt) {
+		err = au_pin(&pin, a->dst_dentry, a->btgt,
+			     au_opt_udba(a->dst_dentry->d_sb),
+			     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
+		if (!err) {
+			struct au_cp_generic cpg = {
+				.dentry	= a->dst_dentry,
+				.bdst	= a->btgt,
+				.bsrc	= a->dst_btop,
+				.len	= -1,
+				.pin	= &pin,
+				.flags	= AuCpup_DTIME | AuCpup_HOPEN
+			};
+			err = au_sio_cpup_simple(&cpg);
+			au_unpin(&pin);
+		}
+		if (unlikely(err))
+			goto out_children;
+		a->dst_btop = a->btgt;
+		a->dst_h_dentry = au_h_dptr(a->dst_dentry, a->btgt);
+	}
+
+	/* lock them all */
+	err = au_ren_lock(a);
+	if (unlikely(err))
+		/* leave the copied-up one */
+		goto out_children;
+
+	if (!a->exchange) {
+		if (!au_opt_test(au_mntflags(a->dst_dir->i_sb), UDBA_NONE))
+			err = au_may_ren(a);
+		else if (unlikely(a->dst_dentry->d_name.len > AUFS_MAX_NAMELEN))
+			err = -ENAMETOOLONG;
+		if (unlikely(err))
+			goto out_hdir;
+	}
+
+	/* store timestamps to be revertible */
+	au_ren_dt(a);
+
+	/* store dirren info */
+	if (au_ftest_ren(a->auren_flags, DIRREN)) {
+		err = au_dr_rename(a->src_dentry, a->btgt,
+				   &a->dst_dentry->d_name, &rev);
+		AuTraceErr(err);
+		if (unlikely(err))
+			goto out_dt;
+	}
+
+	/* here we go */
+	err = do_rename(a);
+	if (unlikely(err))
+		goto out_dirren;
+
+	if (au_ftest_ren(a->auren_flags, DIRREN))
+		au_dr_rename_fin(a->src_dentry, a->btgt, rev);
+
+	/* update dir attributes */
+	au_ren_refresh_dir(a);
+
+	/* dput/iput all lower dentries */
+	au_ren_refresh(a);
+
+	goto out_hdir; /* success */
+
+out_dirren:
+	if (au_ftest_ren(a->auren_flags, DIRREN))
+		au_dr_rename_rev(a->src_dentry, a->btgt, rev);
+out_dt:
+	au_ren_rev_dt(err, a);
+out_hdir:
+	au_ren_unlock(a);
+out_children:
+	au_nhash_wh_free(&a->whlist);
+	if (err && a->dst_inode && a->dst_btop != a->btgt) {
+		AuDbg("btop %d, btgt %d\n", a->dst_btop, a->btgt);
+		au_set_h_dptr(a->dst_dentry, a->btgt, NULL);
+		au_set_dbtop(a->dst_dentry, a->dst_btop);
+	}
+out_parent:
+	if (!err) {
+		if (d_unhashed(a->src_dentry))
+			au_fset_ren(a->auren_flags, DROPPED_SRC);
+		if (d_unhashed(a->dst_dentry))
+			au_fset_ren(a->auren_flags, DROPPED_DST);
+		if (!a->exchange)
+			d_move(a->src_dentry, a->dst_dentry);
+		else {
+			d_exchange(a->src_dentry, a->dst_dentry);
+			if (au_ftest_ren(a->auren_flags, DROPPED_DST))
+				d_drop(a->dst_dentry);
+		}
+		if (au_ftest_ren(a->auren_flags, DROPPED_SRC))
+			d_drop(a->src_dentry);
+	} else {
+		au_update_dbtop(a->dst_dentry);
+		if (!a->dst_inode)
+			d_drop(a->dst_dentry);
+	}
+	if (au_ftest_ren(a->auren_flags, ISSAMEDIR))
+		di_write_unlock(a->dst_parent);
+	else
+		di_write_unlock2(a->src_parent, a->dst_parent);
+out_unlock:
+	aufs_read_and_write_unlock2(a->dst_dentry, a->src_dentry);
+out_free:
+	iput(a->dst_inode);
+	if (a->thargs)
+		au_whtmp_rmdir_free(a->thargs);
+	au_kfree_rcu(a);
+out:
+	AuTraceErr(err);
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/Kconfig b/fs/aufs/Kconfig
--- a/fs/aufs/Kconfig	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,199 @@
+# SPDX-License-Identifier: GPL-2.0
+config AUFS_FS
+	tristate "Aufs (Advanced multi layered unification filesystem) support"
+	help
+	Aufs is a stackable unification filesystem such as Unionfs,
+	which unifies several directories and provides a merged single
+	directory.
+	In the early days, aufs was entirely re-designed and
+	re-implemented Unionfs Version 1.x series. Introducing many
+	original ideas, approaches and improvements, it becomes totally
+	different from Unionfs while keeping the basic features.
+
+if AUFS_FS
+choice
+	prompt "Maximum number of branches"
+	default AUFS_BRANCH_MAX_127
+	help
+	Specifies the maximum number of branches (or member directories)
+	in a single aufs. The larger value consumes more system
+	resources and has a minor impact to performance.
+config AUFS_BRANCH_MAX_127
+	bool "127"
+	help
+	Specifies the maximum number of branches (or member directories)
+	in a single aufs. The larger value consumes more system
+	resources and has a minor impact to performance.
+config AUFS_BRANCH_MAX_511
+	bool "511"
+	help
+	Specifies the maximum number of branches (or member directories)
+	in a single aufs. The larger value consumes more system
+	resources and has a minor impact to performance.
+config AUFS_BRANCH_MAX_1023
+	bool "1023"
+	help
+	Specifies the maximum number of branches (or member directories)
+	in a single aufs. The larger value consumes more system
+	resources and has a minor impact to performance.
+config AUFS_BRANCH_MAX_32767
+	bool "32767"
+	help
+	Specifies the maximum number of branches (or member directories)
+	in a single aufs. The larger value consumes more system
+	resources and has a minor impact to performance.
+endchoice
+
+config AUFS_SBILIST
+	bool
+	depends on AUFS_MAGIC_SYSRQ || PROC_FS
+	default y
+	help
+	Automatic configuration for internal use.
+	When aufs supports Magic SysRq or /proc, enabled automatically.
+
+config AUFS_HNOTIFY
+	bool "Detect direct branch access (bypassing aufs)"
+	help
+	If you want to modify files on branches directly, eg. bypassing aufs,
+	and want aufs to detect the changes of them fully, then enable this
+	option and use 'udba=notify' mount option.
+	Currently there is only one available configuration, "fsnotify".
+	It will have a negative impact to the performance.
+	See detail in aufs.5.
+
+choice
+	prompt "method" if AUFS_HNOTIFY
+	default AUFS_HFSNOTIFY
+config AUFS_HFSNOTIFY
+	bool "fsnotify"
+	select FSNOTIFY
+endchoice
+
+config AUFS_EXPORT
+	bool "NFS-exportable aufs"
+	depends on EXPORTFS
+	help
+	If you want to export your mounted aufs via NFS, then enable this
+	option. There are several requirements for this configuration.
+	See detail in aufs.5.
+
+config AUFS_INO_T_64
+	bool
+	depends on AUFS_EXPORT
+	depends on 64BIT && !(ALPHA || S390)
+	default y
+	help
+	Automatic configuration for internal use.
+	/* typedef unsigned long/int __kernel_ino_t */
+	/* alpha and s390x are int */
+
+config AUFS_XATTR
+	bool "support for XATTR/EA (including Security Labels)"
+	help
+	If your branch fs supports XATTR/EA and you want to make them
+	available in aufs too, then enable this opsion and specify the
+	branch attributes for EA.
+	See detail in aufs.5.
+
+config AUFS_FHSM
+	bool "File-based Hierarchical Storage Management"
+	help
+	Hierarchical Storage Management (or HSM) is a well-known feature
+	in the storage world. Aufs provides this feature as file-based.
+	with multiple branches.
+	These multiple branches are prioritized, ie. the topmost one
+	should be the fastest drive and be used heavily.
+
+config AUFS_RDU
+	bool "Readdir in userspace"
+	help
+	Aufs has two methods to provide a merged view for a directory,
+	by a user-space library and by kernel-space natively. The latter
+	is always enabled but sometimes large and slow.
+	If you enable this option, install the library in aufs2-util
+	package, and set some environment variables for your readdir(3),
+	then the work will be handled in user-space which generally
+	shows better performance in most cases.
+	See detail in aufs.5.
+
+config AUFS_DIRREN
+	bool "Workaround for rename(2)-ing a directory"
+	help
+	By default, aufs returns EXDEV error in renameing a dir who has
+	his child on the lower branch, since it is a bad idea to issue
+	rename(2) internally for every lower branch. But user may not
+	accept this behaviour. So here is a workaround to allow such
+	rename(2) and store some extra infromation on the writable
+	branch. Obviously this costs high (and I don't like it).
+	To use this feature, you need to enable this configuration AND
+	to specify the mount option `dirren.'
+	See details in aufs.5 and the design documents.
+
+config AUFS_SHWH
+	bool "Show whiteouts"
+	help
+	If you want to make the whiteouts in aufs visible, then enable
+	this option and specify 'shwh' mount option. Although it may
+	sounds like philosophy or something, but in technically it
+	simply shows the name of whiteout with keeping its behaviour.
+
+config AUFS_BR_RAMFS
+	bool "Ramfs (initramfs/rootfs) as an aufs branch"
+	help
+	If you want to use ramfs as an aufs branch fs, then enable this
+	option. Generally tmpfs is recommended.
+	Aufs prohibited them to be a branch fs by default, because
+	initramfs becomes unusable after switch_root or something
+	generally. If you sets initramfs as an aufs branch and boot your
+	system by switch_root, you will meet a problem easily since the
+	files in initramfs may be inaccessible.
+	Unless you are going to use ramfs as an aufs branch fs without
+	switch_root or something, leave it N.
+
+config AUFS_BR_FUSE
+	bool "Fuse fs as an aufs branch"
+	depends on FUSE_FS
+	select AUFS_POLL
+	help
+	If you want to use fuse-based userspace filesystem as an aufs
+	branch fs, then enable this option.
+	It implements the internal poll(2) operation which is
+	implemented by fuse only (curretnly).
+
+config AUFS_POLL
+	bool
+	help
+	Automatic configuration for internal use.
+
+config AUFS_BR_HFSPLUS
+	bool "Hfsplus as an aufs branch"
+	depends on HFSPLUS_FS
+	default y
+	help
+	If you want to use hfsplus fs as an aufs branch fs, then enable
+	this option. This option introduces a small overhead at
+	copying-up a file on hfsplus.
+
+config AUFS_BDEV_LOOP
+	bool
+	depends on BLK_DEV_LOOP
+	default y
+	help
+	Automatic configuration for internal use.
+	Convert =[ym] into =y.
+
+config AUFS_DEBUG
+	bool "Debug aufs"
+	help
+	Enable this to compile aufs internal debug code.
+	It will have a negative impact to the performance.
+
+config AUFS_MAGIC_SYSRQ
+	bool
+	depends on AUFS_DEBUG && MAGIC_SYSRQ
+	default y
+	help
+	Automatic configuration for internal use.
+	When aufs supports Magic SysRq, enabled automatically.
+endif
diff -Naur --no-dereference a/fs/aufs/lcnt.h b/fs/aufs/lcnt.h
--- a/fs/aufs/lcnt.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/lcnt.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,186 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * simple long counter wrapper
+ */
+
+#ifndef __AUFS_LCNT_H__
+#define __AUFS_LCNT_H__
+
+#ifdef __KERNEL__
+
+#include "debug.h"
+
+#define AuLCntATOMIC	1
+#define AuLCntPCPUCNT	2
+/*
+ * why does percpu_refcount require extra synchronize_rcu()s in
+ * au_br_do_free()
+ */
+#define AuLCntPCPUREF	3
+
+/* #define AuLCntChosen	AuLCntATOMIC */
+#define AuLCntChosen	AuLCntPCPUCNT
+/* #define AuLCntChosen	AuLCntPCPUREF */
+
+#if AuLCntChosen == AuLCntATOMIC
+#include <linux/atomic.h>
+
+typedef atomic_long_t au_lcnt_t;
+
+static inline int au_lcnt_init(au_lcnt_t *cnt, void *release __maybe_unused)
+{
+	atomic_long_set(cnt, 0);
+	return 0;
+}
+
+static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
+{
+	/* empty */
+}
+
+static inline void au_lcnt_fin(au_lcnt_t *cnt __maybe_unused,
+			       int do_sync __maybe_unused)
+{
+	/* empty */
+}
+
+static inline void au_lcnt_inc(au_lcnt_t *cnt)
+{
+	atomic_long_inc(cnt);
+}
+
+static inline void au_lcnt_dec(au_lcnt_t *cnt)
+{
+	atomic_long_dec(cnt);
+}
+
+static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev __maybe_unused)
+{
+	return atomic_long_read(cnt);
+}
+#endif
+
+#if AuLCntChosen == AuLCntPCPUCNT
+#include <linux/percpu_counter.h>
+
+typedef struct percpu_counter au_lcnt_t;
+
+static inline int au_lcnt_init(au_lcnt_t *cnt, void *release __maybe_unused)
+{
+	return percpu_counter_init(cnt, 0, GFP_NOFS);
+}
+
+static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
+{
+	/* empty */
+}
+
+static inline void au_lcnt_fin(au_lcnt_t *cnt, int do_sync __maybe_unused)
+{
+	percpu_counter_destroy(cnt);
+}
+
+static inline void au_lcnt_inc(au_lcnt_t *cnt)
+{
+	percpu_counter_inc(cnt);
+}
+
+static inline void au_lcnt_dec(au_lcnt_t *cnt)
+{
+	percpu_counter_dec(cnt);
+}
+
+static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev __maybe_unused)
+{
+	s64 n;
+
+	n = percpu_counter_sum(cnt);
+	BUG_ON(n < 0);
+	if (LONG_MAX != LLONG_MAX
+	    && n > LONG_MAX)
+		AuWarn1("%s\n", "wrap-around");
+
+	return n;
+}
+#endif
+
+#if AuLCntChosen == AuLCntPCPUREF
+#include <linux/percpu-refcount.h>
+
+typedef struct percpu_ref au_lcnt_t;
+
+static inline int au_lcnt_init(au_lcnt_t *cnt, percpu_ref_func_t *release)
+{
+	if (!release)
+		release = percpu_ref_exit;
+	return percpu_ref_init(cnt, release, /*percpu mode*/0, GFP_NOFS);
+}
+
+static inline void au_lcnt_wait_for_fin(au_lcnt_t *cnt __maybe_unused)
+{
+	synchronize_rcu();
+}
+
+static inline void au_lcnt_fin(au_lcnt_t *cnt, int do_sync)
+{
+	percpu_ref_kill(cnt);
+	if (do_sync)
+		au_lcnt_wait_for_fin(cnt);
+}
+
+static inline void au_lcnt_inc(au_lcnt_t *cnt)
+{
+	percpu_ref_get(cnt);
+}
+
+static inline void au_lcnt_dec(au_lcnt_t *cnt)
+{
+	percpu_ref_put(cnt);
+}
+
+/*
+ * avoid calling this func as possible.
+ */
+static inline long au_lcnt_read(au_lcnt_t *cnt, int do_rev)
+{
+	long l;
+
+	percpu_ref_switch_to_atomic_sync(cnt);
+	l = atomic_long_read(&cnt->count);
+	if (do_rev)
+		percpu_ref_switch_to_percpu(cnt);
+
+	/* percpu_ref is initialized by 1 instead of 0 */
+	return l - 1;
+}
+#endif
+
+#ifdef CONFIG_AUFS_DEBUG
+#define AuLCntZero(val) do {			\
+	long l = val;				\
+	if (l)					\
+		AuDbg("%s = %ld\n", #val, l);	\
+} while (0)
+#else
+#define AuLCntZero(val)		do {} while (0)
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_LCNT_H__ */
diff -Naur --no-dereference a/fs/aufs/loop.c b/fs/aufs/loop.c
--- a/fs/aufs/loop.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/loop.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * support for loopback block device as a branch
+ */
+
+#include "aufs.h"
+
+/* added into drivers/block/loop.c */
+static struct file *(*backing_file_func)(struct super_block *sb);
+
+/*
+ * test if two lower dentries have overlapping branches.
+ */
+int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding)
+{
+	struct super_block *h_sb;
+	struct file *backing_file;
+
+	if (unlikely(!backing_file_func)) {
+		/* don't load "loop" module here */
+		backing_file_func = symbol_get(loop_backing_file);
+		if (unlikely(!backing_file_func))
+			/* "loop" module is not loaded */
+			return 0;
+	}
+
+	h_sb = h_adding->d_sb;
+	backing_file = backing_file_func(h_sb);
+	if (!backing_file)
+		return 0;
+
+	h_adding = backing_file->f_path.dentry;
+	/*
+	 * h_adding can be local NFS.
+	 * in this case aufs cannot detect the loop.
+	 */
+	if (unlikely(h_adding->d_sb == sb))
+		return 1;
+	return !!au_test_subdir(h_adding, sb->s_root);
+}
+
+/* true if a kernel thread named 'loop[0-9].*' accesses a file */
+int au_test_loopback_kthread(void)
+{
+	int ret;
+	struct task_struct *tsk = current;
+	char c, comm[sizeof(tsk->comm)];
+
+	ret = 0;
+	if (tsk->flags & PF_KTHREAD) {
+		get_task_comm(comm, tsk);
+		c = comm[4];
+		ret = ('0' <= c && c <= '9'
+		       && !strncmp(comm, "loop", 4));
+	}
+
+	return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define au_warn_loopback_step	16
+static int au_warn_loopback_nelem = au_warn_loopback_step;
+static unsigned long *au_warn_loopback_array;
+
+void au_warn_loopback(struct super_block *h_sb)
+{
+	int i, new_nelem;
+	unsigned long *a, magic;
+	static DEFINE_SPINLOCK(spin);
+
+	magic = h_sb->s_magic;
+	spin_lock(&spin);
+	a = au_warn_loopback_array;
+	for (i = 0; i < au_warn_loopback_nelem && *a; i++)
+		if (a[i] == magic) {
+			spin_unlock(&spin);
+			return;
+		}
+
+	/* h_sb is new to us, print it */
+	if (i < au_warn_loopback_nelem) {
+		a[i] = magic;
+		goto pr;
+	}
+
+	/* expand the array */
+	new_nelem = au_warn_loopback_nelem + au_warn_loopback_step;
+	a = au_kzrealloc(au_warn_loopback_array,
+			 au_warn_loopback_nelem * sizeof(unsigned long),
+			 new_nelem * sizeof(unsigned long), GFP_ATOMIC,
+			 /*may_shrink*/0);
+	if (a) {
+		au_warn_loopback_nelem = new_nelem;
+		au_warn_loopback_array = a;
+		a[i] = magic;
+		goto pr;
+	}
+
+	spin_unlock(&spin);
+	AuWarn1("realloc failed, ignored\n");
+	return;
+
+pr:
+	spin_unlock(&spin);
+	pr_warn("you may want to try another patch for loopback file "
+		"on %s(0x%lx) branch\n", au_sbtype(h_sb), magic);
+}
+
+int au_loopback_init(void)
+{
+	int err;
+	struct super_block *sb __maybe_unused;
+
+	BUILD_BUG_ON(sizeof(sb->s_magic) != sizeof(*au_warn_loopback_array));
+
+	err = 0;
+	au_warn_loopback_array = kcalloc(au_warn_loopback_step,
+					 sizeof(unsigned long), GFP_NOFS);
+	if (unlikely(!au_warn_loopback_array))
+		err = -ENOMEM;
+
+	return err;
+}
+
+void au_loopback_fin(void)
+{
+	if (backing_file_func)
+		symbol_put(loop_backing_file);
+	au_kfree_try_rcu(au_warn_loopback_array);
+}
diff -Naur --no-dereference a/fs/aufs/loop.h b/fs/aufs/loop.h
--- a/fs/aufs/loop.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/loop.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * support for loopback mount as a branch
+ */
+
+#ifndef __AUFS_LOOP_H__
+#define __AUFS_LOOP_H__
+
+#ifdef __KERNEL__
+
+struct dentry;
+struct super_block;
+
+#ifdef CONFIG_AUFS_BDEV_LOOP
+/* drivers/block/loop.c */
+struct file *loop_backing_file(struct super_block *sb);
+
+/* loop.c */
+int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding);
+int au_test_loopback_kthread(void);
+void au_warn_loopback(struct super_block *h_sb);
+
+int au_loopback_init(void);
+void au_loopback_fin(void);
+#else
+AuStub(struct file *, loop_backing_file, return NULL, struct super_block *sb)
+
+AuStubInt0(au_test_loopback_overlap, struct super_block *sb,
+	   struct dentry *h_adding)
+AuStubInt0(au_test_loopback_kthread, void)
+AuStubVoid(au_warn_loopback, struct super_block *h_sb)
+
+AuStubInt0(au_loopback_init, void)
+AuStubVoid(au_loopback_fin, void)
+#endif /* BLK_DEV_LOOP */
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_LOOP_H__ */
diff -Naur --no-dereference a/fs/aufs/magic.mk b/fs/aufs/magic.mk
--- a/fs/aufs/magic.mk	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/magic.mk	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# defined in ${srctree}/fs/fuse/inode.c
+# tristate
+ifdef CONFIG_FUSE_FS
+ccflags-y += -DFUSE_SUPER_MAGIC=0x65735546
+endif
+
+# defined in ${srctree}/fs/xfs/xfs_sb.h
+# tristate
+ifdef CONFIG_XFS_FS
+ccflags-y += -DXFS_SB_MAGIC=0x58465342
+endif
+
+# defined in ${srctree}/fs/configfs/mount.c
+# tristate
+ifdef CONFIG_CONFIGFS_FS
+ccflags-y += -DCONFIGFS_MAGIC=0x62656570
+endif
+
+# defined in ${srctree}/fs/ubifs/ubifs.h
+# tristate
+ifdef CONFIG_UBIFS_FS
+ccflags-y += -DUBIFS_SUPER_MAGIC=0x24051905
+endif
+
+# defined in ${srctree}/fs/hfsplus/hfsplus_raw.h
+# tristate
+ifdef CONFIG_HFSPLUS_FS
+ccflags-y += -DHFSPLUS_SUPER_MAGIC=0x482b
+endif
diff -Naur --no-dereference a/fs/aufs/Makefile b/fs/aufs/Makefile
--- a/fs/aufs/Makefile	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0
+
+include ${src}/magic.mk
+ifeq (${CONFIG_AUFS_FS},m)
+include ${src}/conf.mk
+endif
+-include ${src}/priv_def.mk
+
+# cf. include/linux/kernel.h
+# enable pr_debug
+ccflags-y += -DDEBUG
+# sparse requires the full pathname
+ifdef M
+ccflags-y += -include ${M}/../../include/uapi/linux/aufs_type.h
+else
+ccflags-y += -include ${srctree}/include/uapi/linux/aufs_type.h
+endif
+
+obj-$(CONFIG_AUFS_FS) += aufs.o
+aufs-y := module.o sbinfo.o super.o branch.o xino.o sysaufs.o opts.o fsctx.o \
+	wkq.o vfsub.o dcsub.o \
+	cpup.o whout.o wbr_policy.o \
+	dinfo.o dentry.o \
+	dynop.o \
+	finfo.o file.o f_op.o \
+	dir.o vdir.o \
+	iinfo.o inode.o i_op.o i_op_add.o i_op_del.o i_op_ren.o \
+	mvdown.o ioctl.o
+
+# all are boolean
+aufs-$(CONFIG_PROC_FS) += procfs.o plink.o
+aufs-$(CONFIG_SYSFS) += sysfs.o
+aufs-$(CONFIG_DEBUG_FS) += dbgaufs.o
+aufs-$(CONFIG_AUFS_BDEV_LOOP) += loop.o
+aufs-$(CONFIG_AUFS_HNOTIFY) += hnotify.o
+aufs-$(CONFIG_AUFS_HFSNOTIFY) += hfsnotify.o
+aufs-$(CONFIG_AUFS_EXPORT) += export.o
+aufs-$(CONFIG_AUFS_XATTR) += xattr.o
+aufs-$(CONFIG_FS_POSIX_ACL) += posix_acl.o
+aufs-$(CONFIG_AUFS_DIRREN) += dirren.o
+aufs-$(CONFIG_AUFS_FHSM) += fhsm.o
+aufs-$(CONFIG_AUFS_POLL) += poll.o
+aufs-$(CONFIG_AUFS_RDU) += rdu.o
+aufs-$(CONFIG_AUFS_BR_HFSPLUS) += hfsplus.o
+aufs-$(CONFIG_AUFS_DEBUG) += debug.o
+aufs-$(CONFIG_AUFS_MAGIC_SYSRQ) += sysrq.o
diff -Naur --no-dereference a/fs/aufs/module.c b/fs/aufs/module.c
--- a/fs/aufs/module.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/module.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * module global variables and operations
+ */
+
+#include <linux/module.h>
+#include <linux/seq_file.h>
+#include "aufs.h"
+
+/* shrinkable realloc */
+void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink)
+{
+	size_t sz;
+	int diff;
+
+	sz = 0;
+	diff = -1;
+	if (p) {
+#if 0 /* unused */
+		if (!new_sz) {
+			au_kfree_rcu(p);
+			p = NULL;
+			goto out;
+		}
+#else
+		AuDebugOn(!new_sz);
+#endif
+		sz = ksize(p);
+		diff = au_kmidx_sub(sz, new_sz);
+	}
+	if (sz && !diff)
+		goto out;
+
+	if (sz < new_sz)
+		/* expand or SLOB */
+		p = krealloc(p, new_sz, gfp);
+	else if (new_sz < sz && may_shrink) {
+		/* shrink */
+		void *q;
+
+		q = kmalloc(new_sz, gfp);
+		if (q) {
+			if (p) {
+				memcpy(q, p, new_sz);
+				au_kfree_try_rcu(p);
+			}
+			p = q;
+		} else
+			p = NULL;
+	}
+
+out:
+	return p;
+}
+
+void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp,
+		   int may_shrink)
+{
+	p = au_krealloc(p, new_sz, gfp, may_shrink);
+	if (p && new_sz > nused)
+		memset(p + nused, 0, new_sz - nused);
+	return p;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * aufs caches
+ */
+struct kmem_cache *au_cache[AuCache_Last];
+
+static void au_cache_fin(void)
+{
+	int i;
+
+	/*
+	 * Make sure all delayed rcu free inodes are flushed before we
+	 * destroy cache.
+	 */
+	rcu_barrier();
+
+	/* excluding AuCache_HNOTIFY */
+	BUILD_BUG_ON(AuCache_HNOTIFY + 1 != AuCache_Last);
+	for (i = 0; i < AuCache_HNOTIFY; i++) {
+		kmem_cache_destroy(au_cache[i]);
+		au_cache[i] = NULL;
+	}
+}
+
+static int __init au_cache_init(void)
+{
+	au_cache[AuCache_DINFO] = AuCacheCtor(au_dinfo, au_di_init_once);
+	if (au_cache[AuCache_DINFO])
+		/* SLAB_DESTROY_BY_RCU */
+		au_cache[AuCache_ICNTNR] = AuCacheCtor(au_icntnr,
+						       au_icntnr_init_once);
+	if (au_cache[AuCache_ICNTNR])
+		au_cache[AuCache_FINFO] = AuCacheCtor(au_finfo,
+						      au_fi_init_once);
+	if (au_cache[AuCache_FINFO])
+		au_cache[AuCache_VDIR] = AuCache(au_vdir);
+	if (au_cache[AuCache_VDIR])
+		au_cache[AuCache_DEHSTR] = AuCache(au_vdir_dehstr);
+	if (au_cache[AuCache_DEHSTR])
+		return 0;
+
+	au_cache_fin();
+	return -ENOMEM;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_dir_roflags;
+
+#ifdef CONFIG_AUFS_SBILIST
+/*
+ * iterate_supers_type() doesn't protect us from
+ * remounting (branch management)
+ */
+struct hlist_bl_head au_sbilist;
+#endif
+
+/*
+ * functions for module interface.
+ */
+MODULE_LICENSE("GPL");
+/* MODULE_LICENSE("GPL v2"); */
+MODULE_AUTHOR("Junjiro R. Okajima <aufs-users@lists.sourceforge.net>");
+MODULE_DESCRIPTION(AUFS_NAME
+	" -- Advanced multi layered unification filesystem");
+MODULE_VERSION(AUFS_VERSION);
+MODULE_ALIAS_FS(AUFS_NAME);
+
+/* this module parameter has no meaning when SYSFS is disabled */
+int sysaufs_brs = 1;
+MODULE_PARM_DESC(brs, "use <sysfs>/fs/aufs/si_*/brN");
+module_param_named(brs, sysaufs_brs, int, 0444);
+
+/* this module parameter has no meaning when USER_NS is disabled */
+bool au_userns;
+MODULE_PARM_DESC(allow_userns, "allow unprivileged to mount under userns");
+module_param_named(allow_userns, au_userns, bool, 0444);
+
+/* ---------------------------------------------------------------------- */
+
+static char au_esc_chars[0x20 + 3]; /* 0x01-0x20, backslash, del, and NULL */
+
+int au_seq_path(struct seq_file *seq, struct path *path)
+{
+	int err;
+
+	err = seq_path(seq, path, au_esc_chars);
+	if (err >= 0)
+		err = 0;
+	else
+		err = -ENOMEM;
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int __init aufs_init(void)
+{
+	int err, i;
+	char *p;
+
+	p = au_esc_chars;
+	for (i = 1; i <= ' '; i++)
+		*p++ = i;
+	*p++ = '\\';
+	*p++ = '\x7f';
+	*p = 0;
+
+	au_dir_roflags = au_file_roflags(O_DIRECTORY | O_LARGEFILE);
+
+	memcpy(aufs_iop_nogetattr, aufs_iop, sizeof(aufs_iop));
+	for (i = 0; i < AuIop_Last; i++)
+		aufs_iop_nogetattr[i].getattr = NULL;
+
+	memset(au_cache, 0, sizeof(au_cache));	/* including hnotify */
+
+	au_sbilist_init();
+	sysaufs_brs_init();
+	au_debug_init();
+	au_dy_init();
+	err = sysaufs_init();
+	if (unlikely(err))
+		goto out;
+	err = dbgaufs_init();
+	if (unlikely(err))
+		goto out_sysaufs;
+	err = au_procfs_init();
+	if (unlikely(err))
+		goto out_dbgaufs;
+	err = au_wkq_init();
+	if (unlikely(err))
+		goto out_procfs;
+	err = au_loopback_init();
+	if (unlikely(err))
+		goto out_wkq;
+	err = au_hnotify_init();
+	if (unlikely(err))
+		goto out_loopback;
+	err = au_sysrq_init();
+	if (unlikely(err))
+		goto out_hin;
+	err = au_cache_init();
+	if (unlikely(err))
+		goto out_sysrq;
+
+	aufs_fs_type.fs_flags |= au_userns ? FS_USERNS_MOUNT : 0;
+	err = register_filesystem(&aufs_fs_type);
+	if (unlikely(err))
+		goto out_cache;
+
+	/* since we define pr_fmt, call printk directly */
+	printk(KERN_INFO AUFS_NAME " " AUFS_VERSION "\n");
+	goto out; /* success */
+
+out_cache:
+	au_cache_fin();
+out_sysrq:
+	au_sysrq_fin();
+out_hin:
+	au_hnotify_fin();
+out_loopback:
+	au_loopback_fin();
+out_wkq:
+	au_wkq_fin();
+out_procfs:
+	au_procfs_fin();
+out_dbgaufs:
+	dbgaufs_fin();
+out_sysaufs:
+	sysaufs_fin();
+	au_dy_fin();
+out:
+	return err;
+}
+
+static void __exit aufs_exit(void)
+{
+	unregister_filesystem(&aufs_fs_type);
+	au_cache_fin();
+	au_sysrq_fin();
+	au_hnotify_fin();
+	au_loopback_fin();
+	au_wkq_fin();
+	au_procfs_fin();
+	dbgaufs_fin();
+	sysaufs_fin();
+	au_dy_fin();
+}
+
+module_init(aufs_init);
+module_exit(aufs_exit);
diff -Naur --no-dereference a/fs/aufs/module.h b/fs/aufs/module.h
--- a/fs/aufs/module.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/module.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * module initialization and module-global
+ */
+
+#ifndef __AUFS_MODULE_H__
+#define __AUFS_MODULE_H__
+
+#ifdef __KERNEL__
+
+#include <linux/slab.h>
+#include "debug.h"
+#include "dentry.h"
+#include "dir.h"
+#include "file.h"
+#include "inode.h"
+
+struct path;
+struct seq_file;
+
+/* module parameters */
+extern int sysaufs_brs;
+extern bool au_userns;
+
+/* ---------------------------------------------------------------------- */
+
+extern int au_dir_roflags;
+
+void *au_krealloc(void *p, unsigned int new_sz, gfp_t gfp, int may_shrink);
+void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp,
+		   int may_shrink);
+
+/*
+ * Comparing the size of the object with sizeof(struct rcu_head)
+ * case 1: object is always larger
+ *	--> au_kfree_rcu() or au_kfree_do_rcu()
+ * case 2: object is always smaller
+ *	--> au_kfree_small()
+ * case 3: object can be any size
+ *	--> au_kfree_try_rcu()
+ */
+
+static inline void au_kfree_do_rcu(const void *p)
+{
+	struct {
+		struct rcu_head rcu;
+	} *a = (void *)p;
+
+	kfree_rcu(a, rcu);
+}
+
+#define au_kfree_rcu(_p) do {						\
+		typeof(_p) p = (_p);					\
+		BUILD_BUG_ON(sizeof(*p) < sizeof(struct rcu_head));	\
+		if (p)							\
+			au_kfree_do_rcu(p);				\
+	} while (0)
+
+#define au_kfree_do_sz_test(sz)	(sz >= sizeof(struct rcu_head))
+#define au_kfree_sz_test(p)	(p && au_kfree_do_sz_test(ksize(p)))
+
+static inline void au_kfree_try_rcu(const void *p)
+{
+	if (!p)
+		return;
+	if (au_kfree_sz_test(p))
+		au_kfree_do_rcu(p);
+	else
+		kfree(p);
+}
+
+static inline void au_kfree_small(const void *p)
+{
+	if (!p)
+		return;
+	AuDebugOn(au_kfree_sz_test(p));
+	kfree(p);
+}
+
+static inline int au_kmidx_sub(size_t sz, size_t new_sz)
+{
+#ifndef CONFIG_SLOB
+	return __kmalloc_index(sz, false) - __kmalloc_index(new_sz, false);
+#else
+	return -1; /* SLOB is untested */
+#endif
+}
+
+int au_seq_path(struct seq_file *seq, struct path *path);
+
+#ifdef CONFIG_PROC_FS
+/* procfs.c */
+int __init au_procfs_init(void);
+void au_procfs_fin(void);
+#else
+AuStubInt0(au_procfs_init, void);
+AuStubVoid(au_procfs_fin, void);
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+/* kmem cache */
+enum {
+	AuCache_DINFO,
+	AuCache_ICNTNR,
+	AuCache_FINFO,
+	AuCache_VDIR,
+	AuCache_DEHSTR,
+	AuCache_HNOTIFY, /* must be last */
+	AuCache_Last
+};
+
+extern struct kmem_cache *au_cache[AuCache_Last];
+
+#define AuCacheFlags		(SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD)
+#define AuCache(type)		KMEM_CACHE(type, AuCacheFlags)
+#define AuCacheCtor(type, ctor)	\
+	kmem_cache_create(#type, sizeof(struct type), \
+			  __alignof__(struct type), AuCacheFlags, ctor)
+
+#define AuCacheFuncs(name, index)					\
+	static inline struct au_##name *au_cache_alloc_##name(void)	\
+	{ return kmem_cache_alloc(au_cache[AuCache_##index], GFP_NOFS); } \
+	static inline void au_cache_free_##name##_norcu(struct au_##name *p) \
+	{ kmem_cache_free(au_cache[AuCache_##index], p); }		\
+									\
+	static inline void au_cache_free_##name##_rcu_cb(struct rcu_head *rcu) \
+	{ void *p = rcu;						\
+		p -= offsetof(struct au_##name, rcu);			\
+		kmem_cache_free(au_cache[AuCache_##index], p); }	\
+	static inline void au_cache_free_##name##_rcu(struct au_##name *p) \
+	{ BUILD_BUG_ON(sizeof(struct au_##name) < sizeof(struct rcu_head)); \
+		call_rcu(&p->rcu, au_cache_free_##name##_rcu_cb); }	\
+									\
+	static inline void au_cache_free_##name(struct au_##name *p)	\
+	{ /* au_cache_free_##name##_norcu(p); */			\
+		au_cache_free_##name##_rcu(p); }
+
+AuCacheFuncs(dinfo, DINFO);
+AuCacheFuncs(icntnr, ICNTNR);
+AuCacheFuncs(finfo, FINFO);
+AuCacheFuncs(vdir, VDIR);
+AuCacheFuncs(vdir_dehstr, DEHSTR);
+#ifdef CONFIG_AUFS_HNOTIFY
+AuCacheFuncs(hnotify, HNOTIFY);
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_MODULE_H__ */
diff -Naur --no-dereference a/fs/aufs/mvdown.c b/fs/aufs/mvdown.c
--- a/fs/aufs/mvdown.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/mvdown.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,706 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2011-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * move-down, opposite of copy-up
+ */
+
+#include "aufs.h"
+
+struct au_mvd_args {
+	struct {
+		struct super_block *h_sb;
+		struct dentry *h_parent;
+		struct au_hinode *hdir;
+		struct inode *h_dir, *h_inode;
+		struct au_pin pin;
+	} info[AUFS_MVDOWN_NARRAY];
+
+	struct aufs_mvdown mvdown;
+	struct dentry *dentry, *parent;
+	struct inode *inode, *dir;
+	struct super_block *sb;
+	aufs_bindex_t bopq, bwh, bfound;
+	unsigned char rename_lock;
+};
+
+#define mvd_errno		mvdown.au_errno
+#define mvd_bsrc		mvdown.stbr[AUFS_MVDOWN_UPPER].bindex
+#define mvd_src_brid		mvdown.stbr[AUFS_MVDOWN_UPPER].brid
+#define mvd_bdst		mvdown.stbr[AUFS_MVDOWN_LOWER].bindex
+#define mvd_dst_brid		mvdown.stbr[AUFS_MVDOWN_LOWER].brid
+
+#define mvd_h_src_sb		info[AUFS_MVDOWN_UPPER].h_sb
+#define mvd_h_src_parent	info[AUFS_MVDOWN_UPPER].h_parent
+#define mvd_hdir_src		info[AUFS_MVDOWN_UPPER].hdir
+#define mvd_h_src_dir		info[AUFS_MVDOWN_UPPER].h_dir
+#define mvd_h_src_inode		info[AUFS_MVDOWN_UPPER].h_inode
+#define mvd_pin_src		info[AUFS_MVDOWN_UPPER].pin
+
+#define mvd_h_dst_sb		info[AUFS_MVDOWN_LOWER].h_sb
+#define mvd_h_dst_parent	info[AUFS_MVDOWN_LOWER].h_parent
+#define mvd_hdir_dst		info[AUFS_MVDOWN_LOWER].hdir
+#define mvd_h_dst_dir		info[AUFS_MVDOWN_LOWER].h_dir
+#define mvd_h_dst_inode		info[AUFS_MVDOWN_LOWER].h_inode
+#define mvd_pin_dst		info[AUFS_MVDOWN_LOWER].pin
+
+#define AU_MVD_PR(flag, ...) do {			\
+		if (flag)				\
+			pr_err(__VA_ARGS__);		\
+	} while (0)
+
+static int find_lower_writable(struct au_mvd_args *a)
+{
+	struct super_block *sb;
+	aufs_bindex_t bindex, bbot;
+	struct au_branch *br;
+
+	sb = a->sb;
+	bindex = a->mvd_bsrc;
+	bbot = au_sbbot(sb);
+	if (a->mvdown.flags & AUFS_MVDOWN_FHSM_LOWER)
+		for (bindex++; bindex <= bbot; bindex++) {
+			br = au_sbr(sb, bindex);
+			if (au_br_fhsm(br->br_perm)
+			    && !sb_rdonly(au_br_sb(br)))
+				return bindex;
+		}
+	else if (!(a->mvdown.flags & AUFS_MVDOWN_ROLOWER))
+		for (bindex++; bindex <= bbot; bindex++) {
+			br = au_sbr(sb, bindex);
+			if (!au_br_rdonly(br))
+				return bindex;
+		}
+	else
+		for (bindex++; bindex <= bbot; bindex++) {
+			br = au_sbr(sb, bindex);
+			if (!sb_rdonly(au_br_sb(br))) {
+				if (au_br_rdonly(br))
+					a->mvdown.flags
+						|= AUFS_MVDOWN_ROLOWER_R;
+				return bindex;
+			}
+		}
+
+	return -1;
+}
+
+/* make the parent dir on bdst */
+static int au_do_mkdir(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+
+	err = 0;
+	a->mvd_hdir_src = au_hi(a->dir, a->mvd_bsrc);
+	a->mvd_hdir_dst = au_hi(a->dir, a->mvd_bdst);
+	a->mvd_h_src_parent = au_h_dptr(a->parent, a->mvd_bsrc);
+	a->mvd_h_dst_parent = NULL;
+	if (au_dbbot(a->parent) >= a->mvd_bdst)
+		a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst);
+	if (!a->mvd_h_dst_parent) {
+		err = au_cpdown_dirs(a->dentry, a->mvd_bdst);
+		if (unlikely(err)) {
+			AU_MVD_PR(dmsg, "cpdown_dirs failed\n");
+			goto out;
+		}
+		a->mvd_h_dst_parent = au_h_dptr(a->parent, a->mvd_bdst);
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* lock them all */
+static int au_do_lock(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+	struct dentry *h_trap;
+
+	a->mvd_h_src_sb = au_sbr_sb(a->sb, a->mvd_bsrc);
+	a->mvd_h_dst_sb = au_sbr_sb(a->sb, a->mvd_bdst);
+	err = au_pin(&a->mvd_pin_dst, a->dentry, a->mvd_bdst,
+		     au_opt_udba(a->sb),
+		     AuPin_MNT_WRITE | AuPin_DI_LOCKED);
+	AuTraceErr(err);
+	if (unlikely(err)) {
+		AU_MVD_PR(dmsg, "pin_dst failed\n");
+		goto out;
+	}
+
+	if (a->mvd_h_src_sb != a->mvd_h_dst_sb) {
+		a->rename_lock = 0;
+		au_pin_init(&a->mvd_pin_src, a->dentry, a->mvd_bsrc,
+			    AuLsc_DI_PARENT, AuLsc_I_PARENT3,
+			    au_opt_udba(a->sb),
+			    AuPin_MNT_WRITE | AuPin_DI_LOCKED);
+		err = au_do_pin(&a->mvd_pin_src);
+		AuTraceErr(err);
+		a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent);
+		if (unlikely(err)) {
+			AU_MVD_PR(dmsg, "pin_src failed\n");
+			goto out_dst;
+		}
+		goto out; /* success */
+	}
+
+	a->rename_lock = 1;
+	au_pin_hdir_unlock(&a->mvd_pin_dst);
+	err = au_pin(&a->mvd_pin_src, a->dentry, a->mvd_bsrc,
+		     au_opt_udba(a->sb),
+		     AuPin_MNT_WRITE | AuPin_DI_LOCKED);
+	AuTraceErr(err);
+	a->mvd_h_src_dir = d_inode(a->mvd_h_src_parent);
+	if (unlikely(err)) {
+		AU_MVD_PR(dmsg, "pin_src failed\n");
+		au_pin_hdir_lock(&a->mvd_pin_dst);
+		goto out_dst;
+	}
+	au_pin_hdir_unlock(&a->mvd_pin_src);
+	h_trap = vfsub_lock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
+				   a->mvd_h_dst_parent, a->mvd_hdir_dst);
+	if (h_trap) {
+		err = (h_trap != a->mvd_h_src_parent);
+		if (err)
+			err = (h_trap != a->mvd_h_dst_parent);
+	}
+	BUG_ON(err); /* it should never happen */
+	if (unlikely(a->mvd_h_src_dir != au_pinned_h_dir(&a->mvd_pin_src))) {
+		err = -EBUSY;
+		AuTraceErr(err);
+		vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
+				    a->mvd_h_dst_parent, a->mvd_hdir_dst);
+		au_pin_hdir_lock(&a->mvd_pin_src);
+		au_unpin(&a->mvd_pin_src);
+		au_pin_hdir_lock(&a->mvd_pin_dst);
+		goto out_dst;
+	}
+	goto out; /* success */
+
+out_dst:
+	au_unpin(&a->mvd_pin_dst);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static void au_do_unlock(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	if (!a->rename_lock)
+		au_unpin(&a->mvd_pin_src);
+	else {
+		vfsub_unlock_rename(a->mvd_h_src_parent, a->mvd_hdir_src,
+				    a->mvd_h_dst_parent, a->mvd_hdir_dst);
+		au_pin_hdir_lock(&a->mvd_pin_src);
+		au_unpin(&a->mvd_pin_src);
+		au_pin_hdir_lock(&a->mvd_pin_dst);
+	}
+	au_unpin(&a->mvd_pin_dst);
+}
+
+/* copy-down the file */
+static int au_do_cpdown(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+	struct au_cp_generic cpg = {
+		.dentry	= a->dentry,
+		.bdst	= a->mvd_bdst,
+		.bsrc	= a->mvd_bsrc,
+		.len	= -1,
+		.pin	= &a->mvd_pin_dst,
+		.flags	= AuCpup_DTIME | AuCpup_HOPEN
+	};
+
+	AuDbg("b%d, b%d\n", cpg.bsrc, cpg.bdst);
+	if (a->mvdown.flags & AUFS_MVDOWN_OWLOWER)
+		au_fset_cpup(cpg.flags, OVERWRITE);
+	if (a->mvdown.flags & AUFS_MVDOWN_ROLOWER)
+		au_fset_cpup(cpg.flags, RWDST);
+	err = au_sio_cpdown_simple(&cpg);
+	if (unlikely(err))
+		AU_MVD_PR(dmsg, "cpdown failed\n");
+
+	AuTraceErr(err);
+	return err;
+}
+
+/*
+ * unlink the whiteout on bdst if exist which may be created by UDBA while we
+ * were sleeping
+ */
+static int au_do_unlink_wh(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+	struct path h_path;
+	struct au_branch *br;
+	struct inode *delegated;
+
+	br = au_sbr(a->sb, a->mvd_bdst);
+	h_path.dentry = au_wh_lkup(a->mvd_h_dst_parent, &a->dentry->d_name, br);
+	err = PTR_ERR(h_path.dentry);
+	if (IS_ERR(h_path.dentry)) {
+		AU_MVD_PR(dmsg, "wh_lkup failed\n");
+		goto out;
+	}
+
+	err = 0;
+	if (d_is_positive(h_path.dentry)) {
+		h_path.mnt = au_br_mnt(br);
+		delegated = NULL;
+		err = vfsub_unlink(d_inode(a->mvd_h_dst_parent), &h_path,
+				   &delegated, /*force*/0);
+		if (unlikely(err == -EWOULDBLOCK)) {
+			pr_warn("cannot retry for NFSv4 delegation"
+				" for an internal unlink\n");
+			iput(delegated);
+		}
+		if (unlikely(err))
+			AU_MVD_PR(dmsg, "wh_unlink failed\n");
+	}
+	dput(h_path.dentry);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/*
+ * unlink the topmost h_dentry
+ */
+static int au_do_unlink(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+	struct path h_path;
+	struct inode *delegated;
+
+	h_path.mnt = au_sbr_mnt(a->sb, a->mvd_bsrc);
+	h_path.dentry = au_h_dptr(a->dentry, a->mvd_bsrc);
+	delegated = NULL;
+	err = vfsub_unlink(a->mvd_h_src_dir, &h_path, &delegated, /*force*/0);
+	if (unlikely(err == -EWOULDBLOCK)) {
+		pr_warn("cannot retry for NFSv4 delegation"
+			" for an internal unlink\n");
+		iput(delegated);
+	}
+	if (unlikely(err))
+		AU_MVD_PR(dmsg, "unlink failed\n");
+
+	AuTraceErr(err);
+	return err;
+}
+
+/* Since mvdown succeeded, we ignore an error of this function */
+static void au_do_stfs(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+	struct au_branch *br;
+
+	a->mvdown.flags |= AUFS_MVDOWN_STFS_FAILED;
+	br = au_sbr(a->sb, a->mvd_bsrc);
+	err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_UPPER].stfs);
+	if (!err) {
+		br = au_sbr(a->sb, a->mvd_bdst);
+		a->mvdown.stbr[AUFS_MVDOWN_LOWER].brid = br->br_id;
+		err = au_br_stfs(br, &a->mvdown.stbr[AUFS_MVDOWN_LOWER].stfs);
+	}
+	if (!err)
+		a->mvdown.flags &= ~AUFS_MVDOWN_STFS_FAILED;
+	else
+		AU_MVD_PR(dmsg, "statfs failed (%d), ignored\n", err);
+}
+
+/*
+ * copy-down the file and unlink the bsrc file.
+ * - unlink the bdst whout if exist
+ * - copy-down the file (with whtmp name and rename)
+ * - unlink the bsrc file
+ */
+static int au_do_mvdown(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+
+	err = au_do_mkdir(dmsg, a);
+	if (!err)
+		err = au_do_lock(dmsg, a);
+	if (unlikely(err))
+		goto out;
+
+	/*
+	 * do not revert the activities we made on bdst since they should be
+	 * harmless in aufs.
+	 */
+
+	err = au_do_cpdown(dmsg, a);
+	if (!err)
+		err = au_do_unlink_wh(dmsg, a);
+	if (!err && !(a->mvdown.flags & AUFS_MVDOWN_KUPPER))
+		err = au_do_unlink(dmsg, a);
+	if (unlikely(err))
+		goto out_unlock;
+
+	AuDbg("%pd2, 0x%x, %d --> %d\n",
+	      a->dentry, a->mvdown.flags, a->mvd_bsrc, a->mvd_bdst);
+	if (find_lower_writable(a) < 0)
+		a->mvdown.flags |= AUFS_MVDOWN_BOTTOM;
+
+	if (a->mvdown.flags & AUFS_MVDOWN_STFS)
+		au_do_stfs(dmsg, a);
+
+	/* maintain internal array */
+	if (!(a->mvdown.flags & AUFS_MVDOWN_KUPPER)) {
+		au_set_h_dptr(a->dentry, a->mvd_bsrc, NULL);
+		au_set_dbtop(a->dentry, a->mvd_bdst);
+		au_set_h_iptr(a->inode, a->mvd_bsrc, NULL, /*flags*/0);
+		au_set_ibtop(a->inode, a->mvd_bdst);
+	} else {
+		/* hide the lower */
+		au_set_h_dptr(a->dentry, a->mvd_bdst, NULL);
+		au_set_dbbot(a->dentry, a->mvd_bsrc);
+		au_set_h_iptr(a->inode, a->mvd_bdst, NULL, /*flags*/0);
+		au_set_ibbot(a->inode, a->mvd_bsrc);
+	}
+	if (au_dbbot(a->dentry) < a->mvd_bdst)
+		au_set_dbbot(a->dentry, a->mvd_bdst);
+	if (au_ibbot(a->inode) < a->mvd_bdst)
+		au_set_ibbot(a->inode, a->mvd_bdst);
+
+out_unlock:
+	au_do_unlock(dmsg, a);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* make sure the file is idle */
+static int au_mvd_args_busy(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err, plinked;
+
+	err = 0;
+	plinked = !!au_opt_test(au_mntflags(a->sb), PLINK);
+	if (au_dbtop(a->dentry) == a->mvd_bsrc
+	    && au_dcount(a->dentry) == 1
+	    && atomic_read(&a->inode->i_count) == 1
+	    /* && a->mvd_h_src_inode->i_nlink == 1 */
+	    && (!plinked || !au_plink_test(a->inode))
+	    && a->inode->i_nlink == 1)
+		goto out;
+
+	err = -EBUSY;
+	AU_MVD_PR(dmsg,
+		  "b%d, d{b%d, c%d?}, i{c%d?, l%u}, hi{l%u}, p{%d, %d}\n",
+		  a->mvd_bsrc, au_dbtop(a->dentry), au_dcount(a->dentry),
+		  atomic_read(&a->inode->i_count), a->inode->i_nlink,
+		  a->mvd_h_src_inode->i_nlink,
+		  plinked, plinked ? au_plink_test(a->inode) : 0);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* make sure the parent dir is fine */
+static int au_mvd_args_parent(const unsigned char dmsg,
+			      struct au_mvd_args *a)
+{
+	int err;
+	aufs_bindex_t bindex;
+
+	err = 0;
+	if (unlikely(au_alive_dir(a->parent))) {
+		err = -ENOENT;
+		AU_MVD_PR(dmsg, "parent dir is dead\n");
+		goto out;
+	}
+
+	a->bopq = au_dbdiropq(a->parent);
+	bindex = au_wbr_nonopq(a->dentry, a->mvd_bdst);
+	AuDbg("b%d\n", bindex);
+	if (unlikely((bindex >= 0 && bindex < a->mvd_bdst)
+		     || (a->bopq != -1 && a->bopq < a->mvd_bdst))) {
+		err = -EINVAL;
+		a->mvd_errno = EAU_MVDOWN_OPAQUE;
+		AU_MVD_PR(dmsg, "ancestor is opaque b%d, b%d\n",
+			  a->bopq, a->mvd_bdst);
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_mvd_args_intermediate(const unsigned char dmsg,
+				    struct au_mvd_args *a)
+{
+	int err;
+	struct au_dinfo *dinfo, *tmp;
+
+	/* lookup the next lower positive entry */
+	err = -ENOMEM;
+	tmp = au_di_alloc(a->sb, AuLsc_DI_TMP);
+	if (unlikely(!tmp))
+		goto out;
+
+	a->bfound = -1;
+	a->bwh = -1;
+	dinfo = au_di(a->dentry);
+	au_di_cp(tmp, dinfo);
+	au_di_swap(tmp, dinfo);
+
+	/* returns the number of positive dentries */
+	err = au_lkup_dentry(a->dentry, a->mvd_bsrc + 1,
+			     /* AuLkup_IGNORE_PERM */ 0);
+	if (!err)
+		a->bwh = au_dbwh(a->dentry);
+	else if (err > 0)
+		a->bfound = au_dbtop(a->dentry);
+
+	au_di_swap(tmp, dinfo);
+	au_rw_write_unlock(&tmp->di_rwsem);
+	au_di_free(tmp);
+	if (unlikely(err < 0))
+		AU_MVD_PR(dmsg, "failed look-up lower\n");
+
+	/*
+	 * here, we have these cases.
+	 * bfound == -1
+	 *	no positive dentry under bsrc. there are more sub-cases.
+	 *	bwh < 0
+	 *		there no whiteout, we can safely move-down.
+	 *	bwh <= bsrc
+	 *		impossible
+	 *	bsrc < bwh && bwh < bdst
+	 *		there is a whiteout on RO branch. cannot proceed.
+	 *	bwh == bdst
+	 *		there is a whiteout on the RW target branch. it should
+	 *		be removed.
+	 *	bdst < bwh
+	 *		there is a whiteout somewhere unrelated branch.
+	 * -1 < bfound && bfound <= bsrc
+	 *	impossible.
+	 * bfound < bdst
+	 *	found, but it is on RO branch between bsrc and bdst. cannot
+	 *	proceed.
+	 * bfound == bdst
+	 *	found, replace it if AUFS_MVDOWN_FORCE is set. otherwise return
+	 *	error.
+	 * bdst < bfound
+	 *	found, after we create the file on bdst, it will be hidden.
+	 */
+
+	AuDebugOn(a->bfound == -1
+		  && a->bwh != -1
+		  && a->bwh <= a->mvd_bsrc);
+	AuDebugOn(-1 < a->bfound
+		  && a->bfound <= a->mvd_bsrc);
+
+	err = -EINVAL;
+	if (a->bfound == -1
+	    && a->mvd_bsrc < a->bwh
+	    && a->bwh != -1
+	    && a->bwh < a->mvd_bdst) {
+		a->mvd_errno = EAU_MVDOWN_WHITEOUT;
+		AU_MVD_PR(dmsg, "bsrc %d, bdst %d, bfound %d, bwh %d\n",
+			  a->mvd_bsrc, a->mvd_bdst, a->bfound, a->bwh);
+		goto out;
+	} else if (a->bfound != -1 && a->bfound < a->mvd_bdst) {
+		a->mvd_errno = EAU_MVDOWN_UPPER;
+		AU_MVD_PR(dmsg, "bdst %d, bfound %d\n",
+			  a->mvd_bdst, a->bfound);
+		goto out;
+	}
+
+	err = 0; /* success */
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_mvd_args_exist(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+
+	err = 0;
+	if (!(a->mvdown.flags & AUFS_MVDOWN_OWLOWER)
+	    && a->bfound == a->mvd_bdst)
+		err = -EEXIST;
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_mvd_args(const unsigned char dmsg, struct au_mvd_args *a)
+{
+	int err;
+	struct au_branch *br;
+
+	err = -EISDIR;
+	if (unlikely(S_ISDIR(a->inode->i_mode)))
+		goto out;
+
+	err = -EINVAL;
+	if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_UPPER))
+		a->mvd_bsrc = au_ibtop(a->inode);
+	else {
+		a->mvd_bsrc = au_br_index(a->sb, a->mvd_src_brid);
+		if (unlikely(a->mvd_bsrc < 0
+			     || (a->mvd_bsrc < au_dbtop(a->dentry)
+				 || au_dbbot(a->dentry) < a->mvd_bsrc
+				 || !au_h_dptr(a->dentry, a->mvd_bsrc))
+			     || (a->mvd_bsrc < au_ibtop(a->inode)
+				 || au_ibbot(a->inode) < a->mvd_bsrc
+				 || !au_h_iptr(a->inode, a->mvd_bsrc)))) {
+			a->mvd_errno = EAU_MVDOWN_NOUPPER;
+			AU_MVD_PR(dmsg, "no upper\n");
+			goto out;
+		}
+	}
+	if (unlikely(a->mvd_bsrc == au_sbbot(a->sb))) {
+		a->mvd_errno = EAU_MVDOWN_BOTTOM;
+		AU_MVD_PR(dmsg, "on the bottom\n");
+		goto out;
+	}
+	a->mvd_h_src_inode = au_h_iptr(a->inode, a->mvd_bsrc);
+	br = au_sbr(a->sb, a->mvd_bsrc);
+	err = au_br_rdonly(br);
+	if (!(a->mvdown.flags & AUFS_MVDOWN_ROUPPER)) {
+		if (unlikely(err))
+			goto out;
+	} else if (!(vfsub_native_ro(a->mvd_h_src_inode)
+		     || IS_APPEND(a->mvd_h_src_inode))) {
+		if (err)
+			a->mvdown.flags |= AUFS_MVDOWN_ROUPPER_R;
+		/* go on */
+	} else
+		goto out;
+
+	err = -EINVAL;
+	if (!(a->mvdown.flags & AUFS_MVDOWN_BRID_LOWER)) {
+		a->mvd_bdst = find_lower_writable(a);
+		if (unlikely(a->mvd_bdst < 0)) {
+			a->mvd_errno = EAU_MVDOWN_BOTTOM;
+			AU_MVD_PR(dmsg, "no writable lower branch\n");
+			goto out;
+		}
+	} else {
+		a->mvd_bdst = au_br_index(a->sb, a->mvd_dst_brid);
+		if (unlikely(a->mvd_bdst < 0
+			     || au_sbbot(a->sb) < a->mvd_bdst)) {
+			a->mvd_errno = EAU_MVDOWN_NOLOWERBR;
+			AU_MVD_PR(dmsg, "no lower brid\n");
+			goto out;
+		}
+	}
+
+	err = au_mvd_args_busy(dmsg, a);
+	if (!err)
+		err = au_mvd_args_parent(dmsg, a);
+	if (!err)
+		err = au_mvd_args_intermediate(dmsg, a);
+	if (!err)
+		err = au_mvd_args_exist(dmsg, a);
+	if (!err)
+		AuDbg("b%d, b%d\n", a->mvd_bsrc, a->mvd_bdst);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *uarg)
+{
+	int err, e;
+	unsigned char dmsg;
+	struct au_mvd_args *args;
+	struct inode *inode;
+
+	inode = d_inode(dentry);
+	err = -EPERM;
+	if (unlikely(!capable(CAP_SYS_ADMIN)))
+		goto out;
+
+	err = -ENOMEM;
+	args = kmalloc(sizeof(*args), GFP_NOFS);
+	if (unlikely(!args))
+		goto out;
+
+	err = copy_from_user(&args->mvdown, uarg, sizeof(args->mvdown));
+	if (!err)
+		/* VERIFY_WRITE */
+		err = !access_ok(uarg, sizeof(*uarg));
+	if (unlikely(err)) {
+		err = -EFAULT;
+		AuTraceErr(err);
+		goto out_free;
+	}
+	AuDbg("flags 0x%x\n", args->mvdown.flags);
+	args->mvdown.flags &= ~(AUFS_MVDOWN_ROLOWER_R | AUFS_MVDOWN_ROUPPER_R);
+	args->mvdown.au_errno = 0;
+	args->dentry = dentry;
+	args->inode = inode;
+	args->sb = dentry->d_sb;
+
+	err = -ENOENT;
+	dmsg = !!(args->mvdown.flags & AUFS_MVDOWN_DMSG);
+	args->parent = dget_parent(dentry);
+	args->dir = d_inode(args->parent);
+	inode_lock_nested(args->dir, I_MUTEX_PARENT);
+	dput(args->parent);
+	if (unlikely(args->parent != dentry->d_parent)) {
+		AU_MVD_PR(dmsg, "parent dir is moved\n");
+		goto out_dir;
+	}
+
+	inode_lock_nested(inode, I_MUTEX_CHILD);
+	err = aufs_read_lock(dentry, AuLock_DW | AuLock_FLUSH | AuLock_NOPLMW);
+	if (unlikely(err))
+		goto out_inode;
+
+	di_write_lock_parent(args->parent);
+	err = au_mvd_args(dmsg, args);
+	if (unlikely(err))
+		goto out_parent;
+
+	err = au_do_mvdown(dmsg, args);
+	if (unlikely(err))
+		goto out_parent;
+
+	au_cpup_attr_timesizes(args->dir);
+	au_cpup_attr_timesizes(inode);
+	if (!(args->mvdown.flags & AUFS_MVDOWN_KUPPER))
+		au_cpup_igen(inode, au_h_iptr(inode, args->mvd_bdst));
+	/* au_digen_dec(dentry); */
+
+out_parent:
+	di_write_unlock(args->parent);
+	aufs_read_unlock(dentry, AuLock_DW);
+out_inode:
+	inode_unlock(inode);
+out_dir:
+	inode_unlock(args->dir);
+out_free:
+	e = copy_to_user(uarg, &args->mvdown, sizeof(args->mvdown));
+	if (unlikely(e))
+		err = -EFAULT;
+	au_kfree_rcu(args);
+out:
+	AuTraceErr(err);
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/opts.c b/fs/aufs/opts.c
--- a/fs/aufs/opts.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/opts.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1032 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * mount options/flags
+ */
+
+#include <linux/types.h> /* a distribution requires */
+#include <linux/parser.h>
+#include "aufs.h"
+
+/* ---------------------------------------------------------------------- */
+
+static const char *au_parser_pattern(int val, match_table_t tbl)
+{
+	struct match_token *p;
+
+	p = tbl;
+	while (p->pattern) {
+		if (p->token == val)
+			return p->pattern;
+		p++;
+	}
+	BUG();
+	return "??";
+}
+
+static const char *au_optstr(int *val, match_table_t tbl)
+{
+	struct match_token *p;
+	int v;
+
+	v = *val;
+	if (!v)
+		goto out;
+	p = tbl;
+	while (p->pattern) {
+		if (p->token
+		    && (v & p->token) == p->token) {
+			*val &= ~p->token;
+			return p->pattern;
+		}
+		p++;
+	}
+
+out:
+	return NULL;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static match_table_t brperm = {
+	{AuBrPerm_RO, AUFS_BRPERM_RO},
+	{AuBrPerm_RR, AUFS_BRPERM_RR},
+	{AuBrPerm_RW, AUFS_BRPERM_RW},
+	{0, NULL}
+};
+
+static match_table_t brattr = {
+	/* general */
+	{AuBrAttr_COO_REG, AUFS_BRATTR_COO_REG},
+	{AuBrAttr_COO_ALL, AUFS_BRATTR_COO_ALL},
+	/* 'unpin' attrib is meaningless since linux-3.18-rc1 */
+	{AuBrAttr_UNPIN, AUFS_BRATTR_UNPIN},
+#ifdef CONFIG_AUFS_FHSM
+	{AuBrAttr_FHSM, AUFS_BRATTR_FHSM},
+#endif
+#ifdef CONFIG_AUFS_XATTR
+	{AuBrAttr_ICEX, AUFS_BRATTR_ICEX},
+	{AuBrAttr_ICEX_SEC, AUFS_BRATTR_ICEX_SEC},
+	{AuBrAttr_ICEX_SYS, AUFS_BRATTR_ICEX_SYS},
+	{AuBrAttr_ICEX_TR, AUFS_BRATTR_ICEX_TR},
+	{AuBrAttr_ICEX_USR, AUFS_BRATTR_ICEX_USR},
+	{AuBrAttr_ICEX_OTH, AUFS_BRATTR_ICEX_OTH},
+#endif
+
+	/* ro/rr branch */
+	{AuBrRAttr_WH, AUFS_BRRATTR_WH},
+
+	/* rw branch */
+	{AuBrWAttr_MOO, AUFS_BRWATTR_MOO},
+	{AuBrWAttr_NoLinkWH, AUFS_BRWATTR_NLWH},
+
+	{0, NULL}
+};
+
+static int br_attr_val(char *str, match_table_t table, substring_t args[])
+{
+	int attr, v;
+	char *p;
+
+	attr = 0;
+	do {
+		p = strchr(str, '+');
+		if (p)
+			*p = 0;
+		v = match_token(str, table, args);
+		if (v) {
+			if (v & AuBrAttr_CMOO_Mask)
+				attr &= ~AuBrAttr_CMOO_Mask;
+			attr |= v;
+		} else {
+			if (p)
+				*p = '+';
+			pr_warn("ignored branch attribute %s\n", str);
+			break;
+		}
+		if (p)
+			str = p + 1;
+	} while (p);
+
+	return attr;
+}
+
+static int au_do_optstr_br_attr(au_br_perm_str_t *str, int perm)
+{
+	int sz;
+	const char *p;
+	char *q;
+
+	q = str->a;
+	*q = 0;
+	p = au_optstr(&perm, brattr);
+	if (p) {
+		sz = strlen(p);
+		memcpy(q, p, sz + 1);
+		q += sz;
+	} else
+		goto out;
+
+	do {
+		p = au_optstr(&perm, brattr);
+		if (p) {
+			*q++ = '+';
+			sz = strlen(p);
+			memcpy(q, p, sz + 1);
+			q += sz;
+		}
+	} while (p);
+
+out:
+	return q - str->a;
+}
+
+int au_br_perm_val(char *perm)
+{
+	int val, bad, sz;
+	char *p;
+	substring_t args[MAX_OPT_ARGS];
+	au_br_perm_str_t attr;
+
+	p = strchr(perm, '+');
+	if (p)
+		*p = 0;
+	val = match_token(perm, brperm, args);
+	if (!val) {
+		if (p)
+			*p = '+';
+		pr_warn("ignored branch permission %s\n", perm);
+		val = AuBrPerm_RO;
+		goto out;
+	}
+	if (!p)
+		goto out;
+
+	val |= br_attr_val(p + 1, brattr, args);
+
+	bad = 0;
+	switch (val & AuBrPerm_Mask) {
+	case AuBrPerm_RO:
+	case AuBrPerm_RR:
+		bad = val & AuBrWAttr_Mask;
+		val &= ~AuBrWAttr_Mask;
+		break;
+	case AuBrPerm_RW:
+		bad = val & AuBrRAttr_Mask;
+		val &= ~AuBrRAttr_Mask;
+		break;
+	}
+
+	/*
+	 * 'unpin' attrib becomes meaningless since linux-3.18-rc1, but aufs
+	 * does not treat it as an error, just warning.
+	 * this is a tiny guard for the user operation.
+	 */
+	if (val & AuBrAttr_UNPIN) {
+		bad |= AuBrAttr_UNPIN;
+		val &= ~AuBrAttr_UNPIN;
+	}
+
+	if (unlikely(bad)) {
+		sz = au_do_optstr_br_attr(&attr, bad);
+		AuDebugOn(!sz);
+		pr_warn("ignored branch attribute %s\n", attr.a);
+	}
+
+out:
+	return val;
+}
+
+void au_optstr_br_perm(au_br_perm_str_t *str, int perm)
+{
+	au_br_perm_str_t attr;
+	const char *p;
+	char *q;
+	int sz;
+
+	q = str->a;
+	p = au_optstr(&perm, brperm);
+	AuDebugOn(!p || !*p);
+	sz = strlen(p);
+	memcpy(q, p, sz + 1);
+	q += sz;
+
+	sz = au_do_optstr_br_attr(&attr, perm);
+	if (sz) {
+		*q++ = '+';
+		memcpy(q, attr.a, sz + 1);
+	}
+
+	AuDebugOn(strlen(str->a) >= sizeof(str->a));
+}
+
+/* ---------------------------------------------------------------------- */
+
+static match_table_t udbalevel = {
+	{AuOpt_UDBA_REVAL, "reval"},
+	{AuOpt_UDBA_NONE, "none"},
+#ifdef CONFIG_AUFS_HNOTIFY
+	{AuOpt_UDBA_HNOTIFY, "notify"}, /* abstraction */
+#ifdef CONFIG_AUFS_HFSNOTIFY
+	{AuOpt_UDBA_HNOTIFY, "fsnotify"},
+#endif
+#endif
+	{-1, NULL}
+};
+
+int au_udba_val(char *str)
+{
+	substring_t args[MAX_OPT_ARGS];
+
+	return match_token(str, udbalevel, args);
+}
+
+const char *au_optstr_udba(int udba)
+{
+	return au_parser_pattern(udba, udbalevel);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static match_table_t au_wbr_create_policy = {
+	{AuWbrCreate_TDP, "tdp"},
+	{AuWbrCreate_TDP, "top-down-parent"},
+	{AuWbrCreate_RR, "rr"},
+	{AuWbrCreate_RR, "round-robin"},
+	{AuWbrCreate_MFS, "mfs"},
+	{AuWbrCreate_MFS, "most-free-space"},
+	{AuWbrCreate_MFSV, "mfs:%d"},
+	{AuWbrCreate_MFSV, "most-free-space:%d"},
+
+	/* top-down regardless the parent, and then mfs */
+	{AuWbrCreate_TDMFS, "tdmfs:%d"},
+	{AuWbrCreate_TDMFSV, "tdmfs:%d:%d"},
+
+	{AuWbrCreate_MFSRR, "mfsrr:%d"},
+	{AuWbrCreate_MFSRRV, "mfsrr:%d:%d"},
+	{AuWbrCreate_PMFS, "pmfs"},
+	{AuWbrCreate_PMFSV, "pmfs:%d"},
+	{AuWbrCreate_PMFSRR, "pmfsrr:%d"},
+	{AuWbrCreate_PMFSRRV, "pmfsrr:%d:%d"},
+
+	{-1, NULL}
+};
+
+static int au_wbr_mfs_wmark(substring_t *arg, char *str,
+			    struct au_opt_wbr_create *create)
+{
+	int err;
+	unsigned long long ull;
+
+	err = 0;
+	if (!match_u64(arg, &ull))
+		create->mfsrr_watermark = ull;
+	else {
+		pr_err("bad integer in %s\n", str);
+		err = -EINVAL;
+	}
+
+	return err;
+}
+
+static int au_wbr_mfs_sec(substring_t *arg, char *str,
+			  struct au_opt_wbr_create *create)
+{
+	int n, err;
+
+	err = 0;
+	if (!match_int(arg, &n) && 0 <= n && n <= AUFS_MFS_MAX_SEC)
+		create->mfs_second = n;
+	else {
+		pr_err("bad integer in %s\n", str);
+		err = -EINVAL;
+	}
+
+	return err;
+}
+
+int au_wbr_create_val(char *str, struct au_opt_wbr_create *create)
+{
+	int err, e;
+	substring_t args[MAX_OPT_ARGS];
+
+	err = match_token(str, au_wbr_create_policy, args);
+	create->wbr_create = err;
+	switch (err) {
+	case AuWbrCreate_MFSRRV:
+	case AuWbrCreate_TDMFSV:
+	case AuWbrCreate_PMFSRRV:
+		e = au_wbr_mfs_wmark(&args[0], str, create);
+		if (!e)
+			e = au_wbr_mfs_sec(&args[1], str, create);
+		if (unlikely(e))
+			err = e;
+		break;
+	case AuWbrCreate_MFSRR:
+	case AuWbrCreate_TDMFS:
+	case AuWbrCreate_PMFSRR:
+		e = au_wbr_mfs_wmark(&args[0], str, create);
+		if (unlikely(e)) {
+			err = e;
+			break;
+		}
+		fallthrough;
+	case AuWbrCreate_MFS:
+	case AuWbrCreate_PMFS:
+		create->mfs_second = AUFS_MFS_DEF_SEC;
+		break;
+	case AuWbrCreate_MFSV:
+	case AuWbrCreate_PMFSV:
+		e = au_wbr_mfs_sec(&args[0], str, create);
+		if (unlikely(e))
+			err = e;
+		break;
+	}
+
+	return err;
+}
+
+const char *au_optstr_wbr_create(int wbr_create)
+{
+	return au_parser_pattern(wbr_create, au_wbr_create_policy);
+}
+
+static match_table_t au_wbr_copyup_policy = {
+	{AuWbrCopyup_TDP, "tdp"},
+	{AuWbrCopyup_TDP, "top-down-parent"},
+	{AuWbrCopyup_BUP, "bup"},
+	{AuWbrCopyup_BUP, "bottom-up-parent"},
+	{AuWbrCopyup_BU, "bu"},
+	{AuWbrCopyup_BU, "bottom-up"},
+	{-1, NULL}
+};
+
+int au_wbr_copyup_val(char *str)
+{
+	substring_t args[MAX_OPT_ARGS];
+
+	return match_token(str, au_wbr_copyup_policy, args);
+}
+
+const char *au_optstr_wbr_copyup(int wbr_copyup)
+{
+	return au_parser_pattern(wbr_copyup, au_wbr_copyup_policy);
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags,
+	       aufs_bindex_t bindex)
+{
+	int err;
+	struct au_opt_add *add = &opt->add;
+	char *p;
+
+	add->bindex = bindex;
+	add->perm = AuBrPerm_RO;
+	add->pathname = opt_str;
+	p = strchr(opt_str, '=');
+	if (p) {
+		*p++ = 0;
+		if (*p)
+			add->perm = au_br_perm_val(p);
+	}
+
+	err = vfsub_kern_path(add->pathname, AuOpt_LkupDirFlags, &add->path);
+	if (!err) {
+		if (!p) {
+			add->perm = AuBrPerm_RO;
+			if (au_test_fs_rr(add->path.dentry->d_sb))
+				add->perm = AuBrPerm_RR;
+			else if (!bindex && !(sb_flags & SB_RDONLY))
+				add->perm = AuBrPerm_RW;
+		}
+		opt->type = Opt_add;
+		goto out;
+	}
+	pr_err("lookup failed %s (%d)\n", add->pathname, err);
+	err = -EINVAL;
+
+out:
+	return err;
+}
+
+static int au_opt_wbr_create(struct super_block *sb,
+			     struct au_opt_wbr_create *create)
+{
+	int err;
+	struct au_sbinfo *sbinfo;
+
+	SiMustWriteLock(sb);
+
+	err = 1; /* handled */
+	sbinfo = au_sbi(sb);
+	if (sbinfo->si_wbr_create_ops->fin) {
+		err = sbinfo->si_wbr_create_ops->fin(sb);
+		if (!err)
+			err = 1;
+	}
+
+	sbinfo->si_wbr_create = create->wbr_create;
+	sbinfo->si_wbr_create_ops = au_wbr_create_ops + create->wbr_create;
+	switch (create->wbr_create) {
+	case AuWbrCreate_MFSRRV:
+	case AuWbrCreate_MFSRR:
+	case AuWbrCreate_TDMFS:
+	case AuWbrCreate_TDMFSV:
+	case AuWbrCreate_PMFSRR:
+	case AuWbrCreate_PMFSRRV:
+		sbinfo->si_wbr_mfs.mfsrr_watermark = create->mfsrr_watermark;
+		fallthrough;
+	case AuWbrCreate_MFS:
+	case AuWbrCreate_MFSV:
+	case AuWbrCreate_PMFS:
+	case AuWbrCreate_PMFSV:
+		sbinfo->si_wbr_mfs.mfs_expire
+			= msecs_to_jiffies(create->mfs_second * MSEC_PER_SEC);
+		break;
+	}
+
+	if (sbinfo->si_wbr_create_ops->init)
+		sbinfo->si_wbr_create_ops->init(sb); /* ignore */
+
+	return err;
+}
+
+/*
+ * returns,
+ * plus: processed without an error
+ * zero: unprocessed
+ */
+static int au_opt_simple(struct super_block *sb, struct au_opt *opt,
+			 struct au_opts *opts)
+{
+	int err;
+	struct au_sbinfo *sbinfo;
+
+	SiMustWriteLock(sb);
+
+	err = 1; /* handled */
+	sbinfo = au_sbi(sb);
+	switch (opt->type) {
+	case Opt_udba:
+		sbinfo->si_mntflags &= ~AuOptMask_UDBA;
+		sbinfo->si_mntflags |= opt->udba;
+		opts->given_udba |= opt->udba;
+		break;
+
+	case Opt_plink:
+		if (opt->tf)
+			au_opt_set(sbinfo->si_mntflags, PLINK);
+		else {
+			if (au_opt_test(sbinfo->si_mntflags, PLINK))
+				au_plink_put(sb, /*verbose*/1);
+			au_opt_clr(sbinfo->si_mntflags, PLINK);
+		}
+		break;
+	case Opt_list_plink:
+		if (au_opt_test(sbinfo->si_mntflags, PLINK))
+			au_plink_list(sb);
+		break;
+
+	case Opt_dio:
+		if (opt->tf) {
+			au_opt_set(sbinfo->si_mntflags, DIO);
+			au_fset_opts(opts->flags, REFRESH_DYAOP);
+		} else {
+			au_opt_clr(sbinfo->si_mntflags, DIO);
+			au_fset_opts(opts->flags, REFRESH_DYAOP);
+		}
+		break;
+
+	case Opt_fhsm_sec:
+		au_fhsm_set(sbinfo, opt->fhsm_second);
+		break;
+
+	case Opt_diropq_a:
+		au_opt_set(sbinfo->si_mntflags, ALWAYS_DIROPQ);
+		break;
+	case Opt_diropq_w:
+		au_opt_clr(sbinfo->si_mntflags, ALWAYS_DIROPQ);
+		break;
+
+	case Opt_warn_perm:
+		if (opt->tf)
+			au_opt_set(sbinfo->si_mntflags, WARN_PERM);
+		else
+			au_opt_clr(sbinfo->si_mntflags, WARN_PERM);
+		break;
+
+	case Opt_verbose:
+		if (opt->tf)
+			au_opt_set(sbinfo->si_mntflags, VERBOSE);
+		else
+			au_opt_clr(sbinfo->si_mntflags, VERBOSE);
+		break;
+
+	case Opt_sum:
+		if (opt->tf)
+			au_opt_set(sbinfo->si_mntflags, SUM);
+		else {
+			au_opt_clr(sbinfo->si_mntflags, SUM);
+			au_opt_clr(sbinfo->si_mntflags, SUM_W);
+		}
+		break;
+	case Opt_wsum:
+		au_opt_clr(sbinfo->si_mntflags, SUM);
+		au_opt_set(sbinfo->si_mntflags, SUM_W);
+		break;
+
+	case Opt_wbr_create:
+		err = au_opt_wbr_create(sb, &opt->wbr_create);
+		break;
+	case Opt_wbr_copyup:
+		sbinfo->si_wbr_copyup = opt->wbr_copyup;
+		sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + opt->wbr_copyup;
+		break;
+
+	case Opt_dirwh:
+		sbinfo->si_dirwh = opt->dirwh;
+		break;
+
+	case Opt_rdcache:
+		sbinfo->si_rdcache
+			= msecs_to_jiffies(opt->rdcache * MSEC_PER_SEC);
+		break;
+	case Opt_rdblk:
+		sbinfo->si_rdblk = opt->rdblk;
+		break;
+	case Opt_rdhash:
+		sbinfo->si_rdhash = opt->rdhash;
+		break;
+
+	case Opt_shwh:
+		if (opt->tf)
+			au_opt_set(sbinfo->si_mntflags, SHWH);
+		else
+			au_opt_clr(sbinfo->si_mntflags, SHWH);
+		break;
+
+	case Opt_dirperm1:
+		if (opt->tf)
+			au_opt_set(sbinfo->si_mntflags, DIRPERM1);
+		else
+			au_opt_clr(sbinfo->si_mntflags, DIRPERM1);
+		break;
+
+	case Opt_trunc_xino:
+		if (opt->tf)
+			au_opt_set(sbinfo->si_mntflags, TRUNC_XINO);
+		else
+			au_opt_clr(sbinfo->si_mntflags, TRUNC_XINO);
+		break;
+
+	case Opt_trunc_xino_path:
+	case Opt_itrunc_xino:
+		err = au_xino_trunc(sb, opt->xino_itrunc.bindex,
+				    /*idx_begin*/0);
+		if (!err)
+			err = 1;
+		break;
+
+	case Opt_trunc_xib:
+		if (opt->tf)
+			au_fset_opts(opts->flags, TRUNC_XIB);
+		else
+			au_fclr_opts(opts->flags, TRUNC_XIB);
+		break;
+
+	case Opt_dirren:
+		err = 1;
+		if (opt->tf) {
+			if (!au_opt_test(sbinfo->si_mntflags, DIRREN)) {
+				err = au_dr_opt_set(sb);
+				if (!err)
+					err = 1;
+			}
+			if (err == 1)
+				au_opt_set(sbinfo->si_mntflags, DIRREN);
+		} else {
+			if (au_opt_test(sbinfo->si_mntflags, DIRREN)) {
+				err = au_dr_opt_clr(sb, au_ftest_opts(opts->flags,
+								      DR_FLUSHED));
+				if (!err)
+					err = 1;
+			}
+			if (err == 1)
+				au_opt_clr(sbinfo->si_mntflags, DIRREN);
+		}
+		break;
+
+	case Opt_acl:
+		if (opt->tf)
+			sb->s_flags |= SB_POSIXACL;
+		else
+			sb->s_flags &= ~SB_POSIXACL;
+		break;
+
+	default:
+		err = 0;
+		break;
+	}
+
+	return err;
+}
+
+/*
+ * returns tri-state.
+ * plus: processed without an error
+ * zero: unprocessed
+ * minus: error
+ */
+static int au_opt_br(struct super_block *sb, struct au_opt *opt,
+		     struct au_opts *opts)
+{
+	int err, do_refresh;
+
+	err = 0;
+	switch (opt->type) {
+	case Opt_append:
+		opt->add.bindex = au_sbbot(sb) + 1;
+		if (opt->add.bindex < 0)
+			opt->add.bindex = 0;
+		goto add;
+		/* Always goto add, not fallthrough */
+	case Opt_prepend:
+		opt->add.bindex = 0;
+		fallthrough;
+	add: /* indented label */
+	case Opt_add:
+		err = au_br_add(sb, &opt->add,
+				au_ftest_opts(opts->flags, REMOUNT));
+		if (!err) {
+			err = 1;
+			au_fset_opts(opts->flags, REFRESH);
+		}
+		break;
+
+	case Opt_del:
+	case Opt_idel:
+		err = au_br_del(sb, &opt->del,
+				au_ftest_opts(opts->flags, REMOUNT));
+		if (!err) {
+			err = 1;
+			au_fset_opts(opts->flags, TRUNC_XIB);
+			au_fset_opts(opts->flags, REFRESH);
+		}
+		break;
+
+	case Opt_mod:
+	case Opt_imod:
+		err = au_br_mod(sb, &opt->mod,
+				au_ftest_opts(opts->flags, REMOUNT),
+				&do_refresh);
+		if (!err) {
+			err = 1;
+			if (do_refresh)
+				au_fset_opts(opts->flags, REFRESH);
+		}
+		break;
+	}
+	return err;
+}
+
+static int au_opt_xino(struct super_block *sb, struct au_opt *opt,
+		       struct au_opt_xino **opt_xino,
+		       struct au_opts *opts)
+{
+	int err;
+
+	err = 0;
+	switch (opt->type) {
+	case Opt_xino:
+		err = au_xino_set(sb, &opt->xino,
+				  !!au_ftest_opts(opts->flags, REMOUNT));
+		if (!err)
+			*opt_xino = &opt->xino;
+		break;
+	case Opt_noxino:
+		au_xino_clr(sb);
+		*opt_xino = (void *)-1;
+		break;
+	}
+
+	return err;
+}
+
+int au_opts_verify(struct super_block *sb, unsigned long sb_flags,
+		   unsigned int pending)
+{
+	int err, fhsm;
+	aufs_bindex_t bindex, bbot;
+	unsigned char do_plink, skip, do_free, can_no_dreval;
+	struct au_branch *br;
+	struct au_wbr *wbr;
+	struct dentry *root, *dentry;
+	struct inode *dir, *h_dir;
+	struct au_sbinfo *sbinfo;
+	struct au_hinode *hdir;
+
+	SiMustAnyLock(sb);
+
+	sbinfo = au_sbi(sb);
+	AuDebugOn(!(sbinfo->si_mntflags & AuOptMask_UDBA));
+
+	if (!(sb_flags & SB_RDONLY)) {
+		if (unlikely(!au_br_writable(au_sbr_perm(sb, 0))))
+			pr_warn("first branch should be rw\n");
+		if (unlikely(au_opt_test(sbinfo->si_mntflags, SHWH)))
+			pr_warn_once("shwh should be used with ro\n");
+	}
+
+	if (au_opt_test((sbinfo->si_mntflags | pending), UDBA_HNOTIFY)
+	    && !au_opt_test(sbinfo->si_mntflags, XINO))
+		pr_warn_once("udba=*notify requires xino\n");
+
+	if (au_opt_test(sbinfo->si_mntflags, DIRPERM1))
+		pr_warn_once("dirperm1 breaks the protection"
+			     " by the permission bits on the lower branch\n");
+
+	err = 0;
+	fhsm = 0;
+	root = sb->s_root;
+	dir = d_inode(root);
+	do_plink = !!au_opt_test(sbinfo->si_mntflags, PLINK);
+	can_no_dreval = !!au_opt_test((sbinfo->si_mntflags | pending),
+				      UDBA_NONE);
+	bbot = au_sbbot(sb);
+	for (bindex = 0; !err && bindex <= bbot; bindex++) {
+		skip = 0;
+		h_dir = au_h_iptr(dir, bindex);
+		br = au_sbr(sb, bindex);
+
+		if ((br->br_perm & AuBrAttr_ICEX)
+		    && !h_dir->i_op->listxattr)
+			br->br_perm &= ~AuBrAttr_ICEX;
+#if 0 /* untested */
+		if ((br->br_perm & AuBrAttr_ICEX_SEC)
+		    && (au_br_sb(br)->s_flags & SB_NOSEC))
+			br->br_perm &= ~AuBrAttr_ICEX_SEC;
+#endif
+
+		do_free = 0;
+		wbr = br->br_wbr;
+		if (wbr)
+			wbr_wh_read_lock(wbr);
+
+		if (!au_br_writable(br->br_perm)) {
+			do_free = !!wbr;
+			skip = (!wbr
+				|| (!wbr->wbr_whbase
+				    && !wbr->wbr_plink
+				    && !wbr->wbr_orph));
+		} else if (!au_br_wh_linkable(br->br_perm)) {
+			/* skip = (!br->br_whbase && !br->br_orph); */
+			skip = (!wbr || !wbr->wbr_whbase);
+			if (skip && wbr) {
+				if (do_plink)
+					skip = !!wbr->wbr_plink;
+				else
+					skip = !wbr->wbr_plink;
+			}
+		} else {
+			/* skip = (br->br_whbase && br->br_ohph); */
+			skip = (wbr && wbr->wbr_whbase);
+			if (skip) {
+				if (do_plink)
+					skip = !!wbr->wbr_plink;
+				else
+					skip = !wbr->wbr_plink;
+			}
+		}
+		if (wbr)
+			wbr_wh_read_unlock(wbr);
+
+		if (can_no_dreval) {
+			dentry = br->br_path.dentry;
+			spin_lock(&dentry->d_lock);
+			if (dentry->d_flags &
+			    (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE))
+				can_no_dreval = 0;
+			spin_unlock(&dentry->d_lock);
+		}
+
+		if (au_br_fhsm(br->br_perm)) {
+			fhsm++;
+			AuDebugOn(!br->br_fhsm);
+		}
+
+		if (skip)
+			continue;
+
+		hdir = au_hi(dir, bindex);
+		au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+		if (wbr)
+			wbr_wh_write_lock(wbr);
+		err = au_wh_init(br, sb);
+		if (wbr)
+			wbr_wh_write_unlock(wbr);
+		au_hn_inode_unlock(hdir);
+
+		if (!err && do_free) {
+			au_kfree_rcu(wbr);
+			br->br_wbr = NULL;
+		}
+	}
+
+	if (can_no_dreval)
+		au_fset_si(sbinfo, NO_DREVAL);
+	else
+		au_fclr_si(sbinfo, NO_DREVAL);
+
+	if (fhsm >= 2) {
+		au_fset_si(sbinfo, FHSM);
+		for (bindex = bbot; bindex >= 0; bindex--) {
+			br = au_sbr(sb, bindex);
+			if (au_br_fhsm(br->br_perm)) {
+				au_fhsm_set_bottom(sb, bindex);
+				break;
+			}
+		}
+	} else {
+		au_fclr_si(sbinfo, FHSM);
+		au_fhsm_set_bottom(sb, -1);
+	}
+
+	return err;
+}
+
+int au_opts_mount(struct super_block *sb, struct au_opts *opts)
+{
+	int err;
+	unsigned int tmp;
+	aufs_bindex_t bindex, bbot;
+	struct au_opt *opt;
+	struct au_opt_xino *opt_xino, xino;
+	struct au_sbinfo *sbinfo;
+	struct au_branch *br;
+	struct inode *dir;
+
+	SiMustWriteLock(sb);
+
+	err = 0;
+	opt_xino = NULL;
+	opt = opts->opt;
+	while (err >= 0 && opt->type != Opt_tail)
+		err = au_opt_simple(sb, opt++, opts);
+	if (err > 0)
+		err = 0;
+	else if (unlikely(err < 0))
+		goto out;
+
+	/* disable xino and udba temporary */
+	sbinfo = au_sbi(sb);
+	tmp = sbinfo->si_mntflags;
+	au_opt_clr(sbinfo->si_mntflags, XINO);
+	au_opt_set_udba(sbinfo->si_mntflags, UDBA_REVAL);
+
+	opt = opts->opt;
+	while (err >= 0 && opt->type != Opt_tail)
+		err = au_opt_br(sb, opt++, opts);
+	if (err > 0)
+		err = 0;
+	else if (unlikely(err < 0))
+		goto out;
+
+	bbot = au_sbbot(sb);
+	if (unlikely(bbot < 0)) {
+		err = -EINVAL;
+		pr_err("no branches\n");
+		goto out;
+	}
+
+	if (au_opt_test(tmp, XINO))
+		au_opt_set(sbinfo->si_mntflags, XINO);
+	opt = opts->opt;
+	while (!err && opt->type != Opt_tail)
+		err = au_opt_xino(sb, opt++, &opt_xino, opts);
+	if (unlikely(err))
+		goto out;
+
+	err = au_opts_verify(sb, sb->s_flags, tmp);
+	if (unlikely(err))
+		goto out;
+
+	/* restore xino */
+	if (au_opt_test(tmp, XINO) && !opt_xino) {
+		xino.file = au_xino_def(sb);
+		err = PTR_ERR(xino.file);
+		if (IS_ERR(xino.file))
+			goto out;
+
+		err = au_xino_set(sb, &xino, /*remount*/0);
+		fput(xino.file);
+		if (unlikely(err))
+			goto out;
+	}
+
+	/* restore udba */
+	tmp &= AuOptMask_UDBA;
+	sbinfo->si_mntflags &= ~AuOptMask_UDBA;
+	sbinfo->si_mntflags |= tmp;
+	bbot = au_sbbot(sb);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		err = au_hnotify_reset_br(tmp, br, br->br_perm);
+		if (unlikely(err))
+			AuIOErr("hnotify failed on br %d, %d, ignored\n",
+				bindex, err);
+		/* go on even if err */
+	}
+	if (au_opt_test(tmp, UDBA_HNOTIFY)) {
+		dir = d_inode(sb->s_root);
+		au_hn_reset(dir, au_hi_flags(dir, /*isdir*/1) & ~AuHi_XINO);
+	}
+
+out:
+	return err;
+}
+
+int au_opts_remount(struct super_block *sb, struct au_opts *opts)
+{
+	int err, rerr;
+	unsigned char no_dreval;
+	struct inode *dir;
+	struct au_opt_xino *opt_xino;
+	struct au_opt *opt;
+	struct au_sbinfo *sbinfo;
+
+	SiMustWriteLock(sb);
+
+	err = au_dr_opt_flush(sb);
+	if (unlikely(err))
+		goto out;
+	au_fset_opts(opts->flags, DR_FLUSHED);
+
+	dir = d_inode(sb->s_root);
+	sbinfo = au_sbi(sb);
+	opt_xino = NULL;
+	opt = opts->opt;
+	while (err >= 0 && opt->type != Opt_tail) {
+		err = au_opt_simple(sb, opt, opts);
+		if (!err)
+			err = au_opt_br(sb, opt, opts);
+		if (!err)
+			err = au_opt_xino(sb, opt, &opt_xino, opts);
+		opt++;
+	}
+	if (err > 0)
+		err = 0;
+	AuTraceErr(err);
+	/* go on even err */
+
+	no_dreval = !!au_ftest_si(sbinfo, NO_DREVAL);
+	rerr = au_opts_verify(sb, opts->sb_flags, /*pending*/0);
+	if (unlikely(rerr && !err))
+		err = rerr;
+
+	if (no_dreval != !!au_ftest_si(sbinfo, NO_DREVAL))
+		au_fset_opts(opts->flags, REFRESH_IDOP);
+
+	if (au_ftest_opts(opts->flags, TRUNC_XIB)) {
+		rerr = au_xib_trunc(sb);
+		if (unlikely(rerr && !err))
+			err = rerr;
+	}
+
+	/* will be handled by the caller */
+	if (!au_ftest_opts(opts->flags, REFRESH)
+	    && (opts->given_udba
+		|| au_opt_test(sbinfo->si_mntflags, XINO)
+		|| au_ftest_opts(opts->flags, REFRESH_IDOP)
+		    ))
+		au_fset_opts(opts->flags, REFRESH);
+
+	AuDbg("status 0x%x\n", opts->flags);
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+unsigned int au_opt_udba(struct super_block *sb)
+{
+	return au_mntflags(sb) & AuOptMask_UDBA;
+}
diff -Naur --no-dereference a/fs/aufs/opts.h b/fs/aufs/opts.h
--- a/fs/aufs/opts.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/opts.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,263 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * mount options/flags
+ */
+
+#ifndef __AUFS_OPTS_H__
+#define __AUFS_OPTS_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs_parser.h>
+#include <linux/namei.h>
+#include <linux/path.h>
+
+enum {
+	Opt_br,
+	Opt_add, Opt_del, Opt_mod, Opt_append, Opt_prepend,
+	Opt_idel, Opt_imod,
+	Opt_dirwh, Opt_rdcache, Opt_rdblk, Opt_rdhash,
+	Opt_xino, Opt_noxino,
+	Opt_trunc_xino, Opt_trunc_xino_v,
+	Opt_trunc_xino_path, Opt_itrunc_xino,
+	Opt_trunc_xib,
+	Opt_shwh,
+	Opt_plink, Opt_list_plink,
+	Opt_udba,
+	Opt_dio,
+	Opt_diropq, Opt_diropq_a, Opt_diropq_w,
+	Opt_warn_perm,
+	Opt_wbr_copyup, Opt_wbr_create,
+	Opt_fhsm_sec,
+	Opt_verbose, Opt_noverbose,
+	Opt_sum, Opt_wsum,
+	Opt_dirperm1,
+	Opt_dirren,
+	Opt_acl,
+	Opt_tail, Opt_ignore, Opt_ignore_silent, Opt_err
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* mount flags */
+#define AuOpt_XINO		1		/* external inode number bitmap
+						   and translation table */
+#define AuOpt_TRUNC_XINO	(1 << 1)	/* truncate xino files */
+#define AuOpt_UDBA_NONE		(1 << 2)	/* users direct branch access */
+#define AuOpt_UDBA_REVAL	(1 << 3)
+#define AuOpt_UDBA_HNOTIFY	(1 << 4)
+#define AuOpt_SHWH		(1 << 5)	/* show whiteout */
+#define AuOpt_PLINK		(1 << 6)	/* pseudo-link */
+#define AuOpt_DIRPERM1		(1 << 7)	/* ignore the lower dir's perm
+						   bits */
+#define AuOpt_ALWAYS_DIROPQ	(1 << 9)	/* policy to creating diropq */
+#define AuOpt_SUM		(1 << 10)	/* summation for statfs(2) */
+#define AuOpt_SUM_W		(1 << 11)	/* unimplemented */
+#define AuOpt_WARN_PERM		(1 << 12)	/* warn when add-branch */
+#define AuOpt_VERBOSE		(1 << 13)	/* print the cause of error */
+#define AuOpt_DIO		(1 << 14)	/* direct io */
+#define AuOpt_DIRREN		(1 << 15)	/* directory rename */
+
+#ifndef CONFIG_AUFS_HNOTIFY
+#undef AuOpt_UDBA_HNOTIFY
+#define AuOpt_UDBA_HNOTIFY	0
+#endif
+#ifndef CONFIG_AUFS_DIRREN
+#undef AuOpt_DIRREN
+#define AuOpt_DIRREN		0
+#endif
+#ifndef CONFIG_AUFS_SHWH
+#undef AuOpt_SHWH
+#define AuOpt_SHWH		0
+#endif
+
+#define AuOpt_Def	(AuOpt_XINO \
+			 | AuOpt_UDBA_REVAL \
+			 | AuOpt_PLINK \
+			 /* | AuOpt_DIRPERM1 */ \
+			 | AuOpt_WARN_PERM)
+#define AuOptMask_UDBA	(AuOpt_UDBA_NONE \
+			 | AuOpt_UDBA_REVAL \
+			 | AuOpt_UDBA_HNOTIFY)
+
+#define AuOpt_LkupDirFlags	(LOOKUP_FOLLOW | LOOKUP_DIRECTORY)
+
+#define au_opt_test(flags, name)	(flags & AuOpt_##name)
+#define au_opt_set(flags, name) do { \
+	BUILD_BUG_ON(AuOpt_##name & AuOptMask_UDBA); \
+	((flags) |= AuOpt_##name); \
+} while (0)
+#define au_opt_set_udba(flags, name) do { \
+	(flags) &= ~AuOptMask_UDBA; \
+	((flags) |= AuOpt_##name); \
+} while (0)
+#define au_opt_clr(flags, name) do { \
+	((flags) &= ~AuOpt_##name); \
+} while (0)
+
+static inline unsigned int au_opts_plink(unsigned int mntflags)
+{
+#ifdef CONFIG_PROC_FS
+	return mntflags;
+#else
+	return mntflags & ~AuOpt_PLINK;
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* policies to select one among multiple writable branches */
+enum {
+	AuWbrCreate_TDP,	/* top down parent */
+	AuWbrCreate_RR,		/* round robin */
+	AuWbrCreate_MFS,	/* most free space */
+	AuWbrCreate_MFSV,	/* mfs with seconds */
+	AuWbrCreate_MFSRR,	/* mfs then rr */
+	AuWbrCreate_MFSRRV,	/* mfs then rr with seconds */
+	AuWbrCreate_TDMFS,	/* top down regardless parent and mfs */
+	AuWbrCreate_TDMFSV,	/* top down regardless parent and mfs */
+	AuWbrCreate_PMFS,	/* parent and mfs */
+	AuWbrCreate_PMFSV,	/* parent and mfs with seconds */
+	AuWbrCreate_PMFSRR,	/* parent, mfs and round-robin */
+	AuWbrCreate_PMFSRRV,	/* plus seconds */
+
+	AuWbrCreate_Def = AuWbrCreate_TDP
+};
+
+enum {
+	AuWbrCopyup_TDP,	/* top down parent */
+	AuWbrCopyup_BUP,	/* bottom up parent */
+	AuWbrCopyup_BU,		/* bottom up */
+
+	AuWbrCopyup_Def = AuWbrCopyup_TDP
+};
+
+/* ---------------------------------------------------------------------- */
+
+struct file;
+
+struct au_opt_add {
+	aufs_bindex_t	bindex;
+	char		*pathname;
+	int		perm;
+	struct path	path;
+};
+
+struct au_opt_del {
+	char		*pathname;
+	struct path	h_path;
+};
+
+struct au_opt_mod {
+	char		*path;
+	int		perm;
+	struct dentry	*h_root;
+};
+
+struct au_opt_xino {
+	char		*path;
+	struct file	*file;
+};
+
+struct au_opt_xino_itrunc {
+	aufs_bindex_t	bindex;
+};
+
+struct au_opt_wbr_create {
+	int			wbr_create;
+	int			mfs_second;
+	unsigned long long	mfsrr_watermark;
+};
+
+struct au_opt {
+	int type;
+	union {
+		struct au_opt_xino	xino;
+		struct au_opt_xino_itrunc xino_itrunc;
+		struct au_opt_add	add;
+		struct au_opt_del	del;
+		struct au_opt_mod	mod;
+		int			dirwh;
+		int			rdcache;
+		unsigned int		rdblk;
+		unsigned int		rdhash;
+		int			udba;
+		struct au_opt_wbr_create wbr_create;
+		int			wbr_copyup;
+		unsigned int		fhsm_second;
+		bool			tf; /* generic flag, true or false */
+	};
+};
+
+/* opts flags */
+#define AuOpts_REMOUNT		1
+#define AuOpts_REFRESH		(1 << 1)
+#define AuOpts_TRUNC_XIB	(1 << 2)
+#define AuOpts_REFRESH_DYAOP	(1 << 3)
+#define AuOpts_REFRESH_IDOP	(1 << 4)
+#define AuOpts_DR_FLUSHED	(1 << 5)
+#define au_ftest_opts(flags, name)	((flags) & AuOpts_##name)
+#define au_fset_opts(flags, name) \
+	do { (flags) |= AuOpts_##name; } while (0)
+#define au_fclr_opts(flags, name) \
+	do { (flags) &= ~AuOpts_##name; } while (0)
+
+#ifndef CONFIG_AUFS_DIRREN
+#undef AuOpts_DR_FLUSHED
+#define AuOpts_DR_FLUSHED	0
+#endif
+
+struct au_opts {
+	struct au_opt	*opt;
+	int		max_opt;
+
+	unsigned int	given_udba;
+	unsigned int	flags;
+	unsigned long	sb_flags;
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* opts.c */
+int au_br_perm_val(char *perm);
+void au_optstr_br_perm(au_br_perm_str_t *str, int perm);
+int au_udba_val(char *str);
+const char *au_optstr_udba(int udba);
+int au_wbr_create_val(char *str, struct au_opt_wbr_create *create);
+const char *au_optstr_wbr_create(int wbr_create);
+int au_wbr_copyup_val(char *str);
+const char *au_optstr_wbr_copyup(int wbr_copyup);
+
+int au_opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags,
+	       aufs_bindex_t bindex);
+struct super_block;
+int au_opts_verify(struct super_block *sb, unsigned long sb_flags,
+		   unsigned int pending);
+int au_opts_mount(struct super_block *sb, struct au_opts *opts);
+int au_opts_remount(struct super_block *sb, struct au_opts *opts);
+
+unsigned int au_opt_udba(struct super_block *sb);
+
+/* fsctx.c */
+int aufs_fsctx_init(struct fs_context *fc);
+extern const struct fs_parameter_spec aufs_fsctx_paramspec[];
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_OPTS_H__ */
diff -Naur --no-dereference a/fs/aufs/plink.c b/fs/aufs/plink.c
--- a/fs/aufs/plink.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/plink.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,516 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * pseudo-link
+ */
+
+#include "aufs.h"
+
+/*
+ * the pseudo-link maintenance mode.
+ * during a user process maintains the pseudo-links,
+ * prohibit adding a new plink and branch manipulation.
+ *
+ * Flags
+ * NOPLM:
+ *	For entry functions which will handle plink, and i_mutex is already held
+ *	in VFS.
+ *	They cannot wait and should return an error at once.
+ *	Callers has to check the error.
+ * NOPLMW:
+ *	For entry functions which will handle plink, but i_mutex is not held
+ *	in VFS.
+ *	They can wait the plink maintenance mode to finish.
+ *
+ * They behave like F_SETLK and F_SETLKW.
+ * If the caller never handle plink, then both flags are unnecessary.
+ */
+
+int au_plink_maint(struct super_block *sb, int flags)
+{
+	int err;
+	pid_t pid, ppid;
+	struct task_struct *parent, *prev;
+	struct au_sbinfo *sbi;
+
+	SiMustAnyLock(sb);
+
+	err = 0;
+	if (!au_opt_test(au_mntflags(sb), PLINK))
+		goto out;
+
+	sbi = au_sbi(sb);
+	pid = sbi->si_plink_maint_pid;
+	if (!pid || pid == current->pid)
+		goto out;
+
+	/* todo: it highly depends upon /sbin/mount.aufs */
+	prev = NULL;
+	parent = current;
+	ppid = 0;
+	rcu_read_lock();
+	while (1) {
+		parent = rcu_dereference(parent->real_parent);
+		if (parent == prev)
+			break;
+		ppid = task_pid_vnr(parent);
+		if (pid == ppid) {
+			rcu_read_unlock();
+			goto out;
+		}
+		prev = parent;
+	}
+	rcu_read_unlock();
+
+	if (au_ftest_lock(flags, NOPLMW)) {
+		/* if there is no i_mutex lock in VFS, we don't need to wait */
+		/* AuDebugOn(!lockdep_depth(current)); */
+		while (sbi->si_plink_maint_pid) {
+			si_read_unlock(sb);
+			/* gave up wake_up_bit() */
+			wait_event(sbi->si_plink_wq, !sbi->si_plink_maint_pid);
+
+			if (au_ftest_lock(flags, FLUSH))
+				au_nwt_flush(&sbi->si_nowait);
+			si_noflush_read_lock(sb);
+		}
+	} else if (au_ftest_lock(flags, NOPLM)) {
+		AuDbg("ppid %d, pid %d\n", ppid, pid);
+		err = -EAGAIN;
+	}
+
+out:
+	return err;
+}
+
+void au_plink_maint_leave(struct au_sbinfo *sbinfo)
+{
+	spin_lock(&sbinfo->si_plink_maint_lock);
+	sbinfo->si_plink_maint_pid = 0;
+	spin_unlock(&sbinfo->si_plink_maint_lock);
+	wake_up_all(&sbinfo->si_plink_wq);
+}
+
+int au_plink_maint_enter(struct super_block *sb)
+{
+	int err;
+	struct au_sbinfo *sbinfo;
+
+	err = 0;
+	sbinfo = au_sbi(sb);
+	/* make sure i am the only one in this fs */
+	si_write_lock(sb, AuLock_FLUSH);
+	if (au_opt_test(au_mntflags(sb), PLINK)) {
+		spin_lock(&sbinfo->si_plink_maint_lock);
+		if (!sbinfo->si_plink_maint_pid)
+			sbinfo->si_plink_maint_pid = current->pid;
+		else
+			err = -EBUSY;
+		spin_unlock(&sbinfo->si_plink_maint_lock);
+	}
+	si_write_unlock(sb);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_DEBUG
+void au_plink_list(struct super_block *sb)
+{
+	int i;
+	struct au_sbinfo *sbinfo;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos;
+	struct au_icntnr *icntnr;
+
+	SiMustAnyLock(sb);
+
+	sbinfo = au_sbi(sb);
+	AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
+	AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
+
+	for (i = 0; i < AuPlink_NHASH; i++) {
+		hbl = sbinfo->si_plink + i;
+		hlist_bl_lock(hbl);
+		hlist_bl_for_each_entry(icntnr, pos, hbl, plink)
+			AuDbg("%lu\n", icntnr->vfs_inode.i_ino);
+		hlist_bl_unlock(hbl);
+	}
+}
+#endif
+
+/* is the inode pseudo-linked? */
+int au_plink_test(struct inode *inode)
+{
+	int found, i;
+	struct au_sbinfo *sbinfo;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos;
+	struct au_icntnr *icntnr;
+
+	sbinfo = au_sbi(inode->i_sb);
+	AuRwMustAnyLock(&sbinfo->si_rwsem);
+	AuDebugOn(!au_opt_test(au_mntflags(inode->i_sb), PLINK));
+	AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM));
+
+	found = 0;
+	i = au_plink_hash(inode->i_ino);
+	hbl =  sbinfo->si_plink + i;
+	hlist_bl_lock(hbl);
+	hlist_bl_for_each_entry(icntnr, pos, hbl, plink)
+		if (&icntnr->vfs_inode == inode) {
+			found = 1;
+			break;
+		}
+	hlist_bl_unlock(hbl);
+	return found;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * generate a name for plink.
+ * the file will be stored under AUFS_WH_PLINKDIR.
+ */
+/* 20 is max digits length of ulong 64 */
+#define PLINK_NAME_LEN	((20 + 1) * 2)
+
+static int plink_name(char *name, int len, struct inode *inode,
+		      aufs_bindex_t bindex)
+{
+	int rlen;
+	struct inode *h_inode;
+
+	h_inode = au_h_iptr(inode, bindex);
+	rlen = snprintf(name, len, "%lu.%lu", inode->i_ino, h_inode->i_ino);
+	return rlen;
+}
+
+struct au_do_plink_lkup_args {
+	struct dentry **errp;
+	struct qstr *tgtname;
+	struct path *h_ppath;
+};
+
+static struct dentry *au_do_plink_lkup(struct qstr *tgtname,
+				       struct path *h_ppath)
+{
+	struct dentry *h_dentry;
+	struct inode *h_inode;
+
+	h_inode = d_inode(h_ppath->dentry);
+	inode_lock_shared_nested(h_inode, AuLsc_I_CHILD2);
+	h_dentry = vfsub_lkup_one(tgtname, h_ppath);
+	inode_unlock_shared(h_inode);
+
+	return h_dentry;
+}
+
+static void au_call_do_plink_lkup(void *args)
+{
+	struct au_do_plink_lkup_args *a = args;
+	*a->errp = au_do_plink_lkup(a->tgtname, a->h_ppath);
+}
+
+/* lookup the plink-ed @inode under the branch at @bindex */
+struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex)
+{
+	struct dentry *h_dentry;
+	struct au_branch *br;
+	struct path h_ppath;
+	int wkq_err;
+	char a[PLINK_NAME_LEN];
+	struct qstr tgtname = QSTR_INIT(a, 0);
+
+	AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM));
+
+	br = au_sbr(inode->i_sb, bindex);
+	h_ppath.dentry = br->br_wbr->wbr_plink;
+	h_ppath.mnt = au_br_mnt(br);
+	tgtname.len = plink_name(a, sizeof(a), inode, bindex);
+
+	if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) {
+		struct au_do_plink_lkup_args args = {
+			.errp		= &h_dentry,
+			.tgtname	= &tgtname,
+			.h_ppath	= &h_ppath
+		};
+
+		wkq_err = au_wkq_wait(au_call_do_plink_lkup, &args);
+		if (unlikely(wkq_err))
+			h_dentry = ERR_PTR(wkq_err);
+	} else
+		h_dentry = au_do_plink_lkup(&tgtname, &h_ppath);
+
+	return h_dentry;
+}
+
+/* create a pseudo-link */
+static int do_whplink(struct qstr *tgt, struct path *h_ppath,
+		      struct dentry *h_dentry)
+{
+	int err;
+	struct path h_path;
+	struct inode *h_dir, *delegated;
+
+	h_dir = d_inode(h_ppath->dentry);
+	inode_lock_nested(h_dir, AuLsc_I_CHILD2);
+	h_path.mnt = h_ppath->mnt;
+again:
+	h_path.dentry = vfsub_lkup_one(tgt, h_ppath);
+	err = PTR_ERR(h_path.dentry);
+	if (IS_ERR(h_path.dentry))
+		goto out;
+
+	err = 0;
+	/* wh.plink dir is not monitored */
+	/* todo: is it really safe? */
+	if (d_is_positive(h_path.dentry)
+	    && d_inode(h_path.dentry) != d_inode(h_dentry)) {
+		delegated = NULL;
+		err = vfsub_unlink(h_dir, &h_path, &delegated, /*force*/0);
+		if (unlikely(err == -EWOULDBLOCK)) {
+			pr_warn("cannot retry for NFSv4 delegation"
+				" for an internal unlink\n");
+			iput(delegated);
+		}
+		dput(h_path.dentry);
+		h_path.dentry = NULL;
+		if (!err)
+			goto again;
+	}
+	if (!err && d_is_negative(h_path.dentry)) {
+		delegated = NULL;
+		err = vfsub_link(h_dentry, h_dir, &h_path, &delegated);
+		if (unlikely(err == -EWOULDBLOCK)) {
+			pr_warn("cannot retry for NFSv4 delegation"
+				" for an internal link\n");
+			iput(delegated);
+		}
+	}
+	dput(h_path.dentry);
+
+out:
+	inode_unlock(h_dir);
+	return err;
+}
+
+struct do_whplink_args {
+	int *errp;
+	struct qstr *tgt;
+	struct path *h_ppath;
+	struct dentry *h_dentry;
+};
+
+static void call_do_whplink(void *args)
+{
+	struct do_whplink_args *a = args;
+	*a->errp = do_whplink(a->tgt, a->h_ppath, a->h_dentry);
+}
+
+static int whplink(struct dentry *h_dentry, struct inode *inode,
+		   aufs_bindex_t bindex)
+{
+	int err, wkq_err;
+	struct au_branch *br;
+	struct au_wbr *wbr;
+	struct path h_ppath;
+	char a[PLINK_NAME_LEN];
+	struct qstr tgtname = QSTR_INIT(a, 0);
+
+	br = au_sbr(inode->i_sb, bindex);
+	wbr = br->br_wbr;
+	h_ppath.dentry = wbr->wbr_plink;
+	h_ppath.mnt = au_br_mnt(br);
+	tgtname.len = plink_name(a, sizeof(a), inode, bindex);
+
+	/* always superio. */
+	if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) {
+		struct do_whplink_args args = {
+			.errp		= &err,
+			.tgt		= &tgtname,
+			.h_ppath	= &h_ppath,
+			.h_dentry	= h_dentry
+		};
+		wkq_err = au_wkq_wait(call_do_whplink, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	} else
+		err = do_whplink(&tgtname, &h_ppath, h_dentry);
+
+	return err;
+}
+
+/*
+ * create a new pseudo-link for @h_dentry on @bindex.
+ * the linked inode is held in aufs @inode.
+ */
+void au_plink_append(struct inode *inode, aufs_bindex_t bindex,
+		     struct dentry *h_dentry)
+{
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos;
+	struct au_icntnr *icntnr;
+	int found, err, cnt, i;
+
+	sb = inode->i_sb;
+	sbinfo = au_sbi(sb);
+	AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
+	AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
+
+	found = au_plink_test(inode);
+	if (found)
+		return;
+
+	i = au_plink_hash(inode->i_ino);
+	hbl = sbinfo->si_plink + i;
+	au_igrab(inode);
+
+	hlist_bl_lock(hbl);
+	hlist_bl_for_each_entry(icntnr, pos, hbl, plink) {
+		if (&icntnr->vfs_inode == inode) {
+			found = 1;
+			break;
+		}
+	}
+	if (!found) {
+		icntnr = container_of(inode, struct au_icntnr, vfs_inode);
+		hlist_bl_add_head(&icntnr->plink, hbl);
+	}
+	hlist_bl_unlock(hbl);
+	if (!found) {
+		cnt = au_hbl_count(hbl);
+#define msg "unexpectedly unbalanced or too many pseudo-links"
+		if (cnt > AUFS_PLINK_WARN)
+			AuWarn1(msg ", %d\n", cnt);
+#undef msg
+		err = whplink(h_dentry, inode, bindex);
+		if (unlikely(err)) {
+			pr_warn("err %d, damaged pseudo link.\n", err);
+			au_hbl_del(&icntnr->plink, hbl);
+			iput(&icntnr->vfs_inode);
+		}
+	} else
+		iput(&icntnr->vfs_inode);
+}
+
+/* free all plinks */
+void au_plink_put(struct super_block *sb, int verbose)
+{
+	int i, warned;
+	struct au_sbinfo *sbinfo;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos, *tmp;
+	struct au_icntnr *icntnr;
+
+	SiMustWriteLock(sb);
+
+	sbinfo = au_sbi(sb);
+	AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
+	AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
+
+	/* no spin_lock since sbinfo is write-locked */
+	warned = 0;
+	for (i = 0; i < AuPlink_NHASH; i++) {
+		hbl = sbinfo->si_plink + i;
+		if (!warned && verbose && !hlist_bl_empty(hbl)) {
+			pr_warn("pseudo-link is not flushed");
+			warned = 1;
+		}
+		hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink)
+			iput(&icntnr->vfs_inode);
+		INIT_HLIST_BL_HEAD(hbl);
+	}
+}
+
+void au_plink_clean(struct super_block *sb, int verbose)
+{
+	struct dentry *root;
+
+	root = sb->s_root;
+	aufs_write_lock(root);
+	if (au_opt_test(au_mntflags(sb), PLINK))
+		au_plink_put(sb, verbose);
+	aufs_write_unlock(root);
+}
+
+static int au_plink_do_half_refresh(struct inode *inode, aufs_bindex_t br_id)
+{
+	int do_put;
+	aufs_bindex_t btop, bbot, bindex;
+
+	do_put = 0;
+	btop = au_ibtop(inode);
+	bbot = au_ibbot(inode);
+	if (btop >= 0) {
+		for (bindex = btop; bindex <= bbot; bindex++) {
+			if (!au_h_iptr(inode, bindex)
+			    || au_ii_br_id(inode, bindex) != br_id)
+				continue;
+			au_set_h_iptr(inode, bindex, NULL, 0);
+			do_put = 1;
+			break;
+		}
+		if (do_put)
+			for (bindex = btop; bindex <= bbot; bindex++)
+				if (au_h_iptr(inode, bindex)) {
+					do_put = 0;
+					break;
+				}
+	} else
+		do_put = 1;
+
+	return do_put;
+}
+
+/* free the plinks on a branch specified by @br_id */
+void au_plink_half_refresh(struct super_block *sb, aufs_bindex_t br_id)
+{
+	struct au_sbinfo *sbinfo;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos, *tmp;
+	struct au_icntnr *icntnr;
+	struct inode *inode;
+	int i, do_put;
+
+	SiMustWriteLock(sb);
+
+	sbinfo = au_sbi(sb);
+	AuDebugOn(!au_opt_test(au_mntflags(sb), PLINK));
+	AuDebugOn(au_plink_maint(sb, AuLock_NOPLM));
+
+	/* no bit_lock since sbinfo is write-locked */
+	for (i = 0; i < AuPlink_NHASH; i++) {
+		hbl = sbinfo->si_plink + i;
+		hlist_bl_for_each_entry_safe(icntnr, pos, tmp, hbl, plink) {
+			inode = au_igrab(&icntnr->vfs_inode);
+			ii_write_lock_child(inode);
+			do_put = au_plink_do_half_refresh(inode, br_id);
+			if (do_put) {
+				hlist_bl_del(&icntnr->plink);
+				iput(inode);
+			}
+			ii_write_unlock(inode);
+			iput(inode);
+		}
+	}
+}
diff -Naur --no-dereference a/fs/aufs/poll.c b/fs/aufs/poll.c
--- a/fs/aufs/poll.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/poll.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * poll operation
+ * There is only one filesystem which implements ->poll operation, currently.
+ */
+
+#include "aufs.h"
+
+__poll_t aufs_poll(struct file *file, struct poll_table_struct *pt)
+{
+	__poll_t mask;
+	struct file *h_file;
+	struct super_block *sb;
+
+	/* We should pretend an error happened. */
+	mask = EPOLLERR /* | EPOLLIN | EPOLLOUT */;
+	sb = file->f_path.dentry->d_sb;
+	si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW);
+
+	h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0);
+	if (IS_ERR(h_file)) {
+		AuDbg("h_file %ld\n", PTR_ERR(h_file));
+		goto out;
+	}
+
+	mask = vfs_poll(h_file, pt);
+	fput(h_file); /* instead of au_read_post() */
+
+out:
+	si_read_unlock(sb);
+	if (mask & EPOLLERR)
+		AuDbg("mask 0x%x\n", mask);
+	return mask;
+}
diff -Naur --no-dereference a/fs/aufs/posix_acl.c b/fs/aufs/posix_acl.c
--- a/fs/aufs/posix_acl.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/posix_acl.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2014-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * posix acl operations
+ */
+
+#include <linux/fs.h>
+#include "aufs.h"
+
+struct posix_acl *aufs_get_acl(struct inode *inode, int type, bool rcu)
+{
+	struct posix_acl *acl;
+	int err;
+	aufs_bindex_t bindex;
+	struct inode *h_inode;
+	struct super_block *sb;
+
+	acl = ERR_PTR(-ECHILD);
+	if (rcu)
+		goto out;
+
+	acl = NULL;
+	sb = inode->i_sb;
+	si_read_lock(sb, AuLock_FLUSH);
+	ii_read_lock_child(inode);
+	if (!(sb->s_flags & SB_POSIXACL))
+		goto unlock;
+
+	bindex = au_ibtop(inode);
+	h_inode = au_h_iptr(inode, bindex);
+	if (unlikely(!h_inode
+		     || ((h_inode->i_mode & S_IFMT)
+			 != (inode->i_mode & S_IFMT)))) {
+		err = au_busy_or_stale();
+		acl = ERR_PTR(err);
+		goto unlock;
+	}
+
+	/* always topmost only */
+	acl = get_acl(h_inode, type);
+	if (IS_ERR(acl))
+		forget_cached_acl(inode, type);
+	else
+		set_cached_acl(inode, type, acl);
+
+unlock:
+	ii_read_unlock(inode);
+	si_read_unlock(sb);
+
+out:
+	AuTraceErrPtr(acl);
+	return acl;
+}
+
+int aufs_set_acl(struct user_namespace *userns, struct inode *inode,
+		 struct posix_acl *acl, int type)
+{
+	int err;
+	ssize_t ssz;
+	struct dentry *dentry;
+	struct au_sxattr arg = {
+		.type = AU_ACL_SET,
+		.u.acl_set = {
+			.acl	= acl,
+			.type	= type
+		},
+	};
+
+	IMustLock(inode);
+
+	if (inode->i_ino == AUFS_ROOT_INO)
+		dentry = dget(inode->i_sb->s_root);
+	else {
+		dentry = d_find_alias(inode);
+		if (!dentry)
+			dentry = d_find_any_alias(inode);
+		if (!dentry) {
+			pr_warn("cannot handle this inode, "
+				"please report to aufs-users ML\n");
+			err = -ENOENT;
+			goto out;
+		}
+	}
+
+	ssz = au_sxattr(dentry, inode, &arg);
+	/* forget even it if succeeds since the branch might set differently */
+	forget_cached_acl(inode, type);
+	dput(dentry);
+	err = ssz;
+	if (ssz >= 0)
+		err = 0;
+
+out:
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/procfs.c b/fs/aufs/procfs.c
--- a/fs/aufs/procfs.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/procfs.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,170 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2010-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * procfs interfaces
+ */
+
+#include <linux/proc_fs.h>
+#include "aufs.h"
+
+static int au_procfs_plm_release(struct inode *inode, struct file *file)
+{
+	struct au_sbinfo *sbinfo;
+
+	sbinfo = file->private_data;
+	if (sbinfo) {
+		au_plink_maint_leave(sbinfo);
+		kobject_put(&sbinfo->si_kobj);
+	}
+
+	return 0;
+}
+
+static void au_procfs_plm_write_clean(struct file *file)
+{
+	struct au_sbinfo *sbinfo;
+
+	sbinfo = file->private_data;
+	if (sbinfo)
+		au_plink_clean(sbinfo->si_sb, /*verbose*/0);
+}
+
+static int au_procfs_plm_write_si(struct file *file, unsigned long id)
+{
+	int err;
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+	struct hlist_bl_node *pos;
+
+	err = -EBUSY;
+	if (unlikely(file->private_data))
+		goto out;
+
+	sb = NULL;
+	/* don't use au_sbilist_lock() here */
+	hlist_bl_lock(&au_sbilist);
+	hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list)
+		if (id == sysaufs_si_id(sbinfo)) {
+			if (kobject_get_unless_zero(&sbinfo->si_kobj))
+				sb = sbinfo->si_sb;
+			break;
+		}
+	hlist_bl_unlock(&au_sbilist);
+
+	err = -EINVAL;
+	if (unlikely(!sb))
+		goto out;
+
+	err = au_plink_maint_enter(sb);
+	if (!err)
+		/* keep kobject_get() */
+		file->private_data = sbinfo;
+	else
+		kobject_put(&sbinfo->si_kobj);
+out:
+	return err;
+}
+
+/*
+ * Accept a valid "si=xxxx" only.
+ * Once it is accepted successfully, accept "clean" too.
+ */
+static ssize_t au_procfs_plm_write(struct file *file, const char __user *ubuf,
+				   size_t count, loff_t *ppos)
+{
+	ssize_t err;
+	unsigned long id;
+	/* last newline is allowed */
+	char buf[3 + sizeof(unsigned long) * 2 + 1];
+
+	err = -EACCES;
+	if (unlikely(!capable(CAP_SYS_ADMIN)))
+		goto out;
+
+	err = -EINVAL;
+	if (unlikely(count > sizeof(buf)))
+		goto out;
+
+	err = copy_from_user(buf, ubuf, count);
+	if (unlikely(err)) {
+		err = -EFAULT;
+		goto out;
+	}
+	buf[count] = 0;
+
+	err = -EINVAL;
+	if (!strcmp("clean", buf)) {
+		au_procfs_plm_write_clean(file);
+		goto out_success;
+	} else if (unlikely(strncmp("si=", buf, 3)))
+		goto out;
+
+	err = kstrtoul(buf + 3, 16, &id);
+	if (unlikely(err))
+		goto out;
+
+	err = au_procfs_plm_write_si(file, id);
+	if (unlikely(err))
+		goto out;
+
+out_success:
+	err = count; /* success */
+out:
+	return err;
+}
+
+static const struct proc_ops au_procfs_plm_op = {
+	.proc_write	= au_procfs_plm_write,
+	.proc_release	= au_procfs_plm_release
+};
+
+/* ---------------------------------------------------------------------- */
+
+static struct proc_dir_entry *au_procfs_dir;
+
+void au_procfs_fin(void)
+{
+	remove_proc_entry(AUFS_PLINK_MAINT_NAME, au_procfs_dir);
+	remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL);
+}
+
+int __init au_procfs_init(void)
+{
+	int err;
+	struct proc_dir_entry *entry;
+
+	err = -ENOMEM;
+	au_procfs_dir = proc_mkdir(AUFS_PLINK_MAINT_DIR, NULL);
+	if (unlikely(!au_procfs_dir))
+		goto out;
+
+	entry = proc_create(AUFS_PLINK_MAINT_NAME, S_IFREG | 0200,
+			    au_procfs_dir, &au_procfs_plm_op);
+	if (unlikely(!entry))
+		goto out_dir;
+
+	err = 0;
+	goto out; /* success */
+
+
+out_dir:
+	remove_proc_entry(AUFS_PLINK_MAINT_DIR, NULL);
+out:
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/rdu.c b/fs/aufs/rdu.c
--- a/fs/aufs/rdu.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/rdu.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,384 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * readdir in userspace.
+ */
+
+#include <linux/compat.h>
+#include <linux/fs_stack.h>
+#include <linux/security.h>
+#include "aufs.h"
+
+/* bits for struct aufs_rdu.flags */
+#define	AuRdu_CALLED	1
+#define	AuRdu_CONT	(1 << 1)
+#define	AuRdu_FULL	(1 << 2)
+#define au_ftest_rdu(flags, name)	((flags) & AuRdu_##name)
+#define au_fset_rdu(flags, name) \
+	do { (flags) |= AuRdu_##name; } while (0)
+#define au_fclr_rdu(flags, name) \
+	do { (flags) &= ~AuRdu_##name; } while (0)
+
+struct au_rdu_arg {
+	struct dir_context		ctx;
+	struct aufs_rdu			*rdu;
+	union au_rdu_ent_ul		ent;
+	unsigned long			end;
+
+	struct super_block		*sb;
+	int				err;
+};
+
+static int au_rdu_fill(struct dir_context *ctx, const char *name, int nlen,
+		       loff_t offset, u64 h_ino, unsigned int d_type)
+{
+	int err, len;
+	struct au_rdu_arg *arg = container_of(ctx, struct au_rdu_arg, ctx);
+	struct aufs_rdu *rdu = arg->rdu;
+	struct au_rdu_ent ent;
+
+	err = 0;
+	arg->err = 0;
+	au_fset_rdu(rdu->cookie.flags, CALLED);
+	len = au_rdu_len(nlen);
+	if (arg->ent.ul + len  < arg->end) {
+		ent.ino = h_ino;
+		ent.bindex = rdu->cookie.bindex;
+		ent.type = d_type;
+		ent.nlen = nlen;
+		if (unlikely(nlen > AUFS_MAX_NAMELEN))
+			ent.type = DT_UNKNOWN;
+
+		/* unnecessary to support mmap_sem since this is a dir */
+		err = -EFAULT;
+		if (copy_to_user(arg->ent.e, &ent, sizeof(ent)))
+			goto out;
+		if (copy_to_user(arg->ent.e->name, name, nlen))
+			goto out;
+		/* the terminating NULL */
+		if (__put_user(0, arg->ent.e->name + nlen))
+			goto out;
+		err = 0;
+		/* AuDbg("%p, %.*s\n", arg->ent.p, nlen, name); */
+		arg->ent.ul += len;
+		rdu->rent++;
+	} else {
+		err = -EFAULT;
+		au_fset_rdu(rdu->cookie.flags, FULL);
+		rdu->full = 1;
+		rdu->tail = arg->ent;
+	}
+
+out:
+	/* AuTraceErr(err); */
+	return err;
+}
+
+static int au_rdu_do(struct file *h_file, struct au_rdu_arg *arg)
+{
+	int err;
+	loff_t offset;
+	struct au_rdu_cookie *cookie = &arg->rdu->cookie;
+
+	/* we don't have to care (FMODE_32BITHASH | FMODE_64BITHASH) for ext4 */
+	offset = vfsub_llseek(h_file, cookie->h_pos, SEEK_SET);
+	err = offset;
+	if (unlikely(offset != cookie->h_pos))
+		goto out;
+
+	err = 0;
+	do {
+		arg->err = 0;
+		au_fclr_rdu(cookie->flags, CALLED);
+		/* smp_mb(); */
+		err = vfsub_iterate_dir(h_file, &arg->ctx);
+		if (err >= 0)
+			err = arg->err;
+	} while (!err
+		 && au_ftest_rdu(cookie->flags, CALLED)
+		 && !au_ftest_rdu(cookie->flags, FULL));
+	cookie->h_pos = h_file->f_pos;
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_rdu(struct file *file, struct aufs_rdu *rdu)
+{
+	int err;
+	aufs_bindex_t bbot;
+	struct au_rdu_arg arg = {
+		.ctx = {
+			.actor = au_rdu_fill
+		}
+	};
+	struct dentry *dentry;
+	struct inode *inode;
+	struct file *h_file;
+	struct au_rdu_cookie *cookie = &rdu->cookie;
+
+	/* VERIFY_WRITE */
+	err = !access_ok(rdu->ent.e, rdu->sz);
+	if (unlikely(err)) {
+		err = -EFAULT;
+		AuTraceErr(err);
+		goto out;
+	}
+	rdu->rent = 0;
+	rdu->tail = rdu->ent;
+	rdu->full = 0;
+	arg.rdu = rdu;
+	arg.ent = rdu->ent;
+	arg.end = arg.ent.ul;
+	arg.end += rdu->sz;
+
+	err = -ENOTDIR;
+	if (unlikely(!file->f_op->iterate && !file->f_op->iterate_shared))
+		goto out;
+
+	err = security_file_permission(file, MAY_READ);
+	AuTraceErr(err);
+	if (unlikely(err))
+		goto out;
+
+	dentry = file->f_path.dentry;
+	inode = d_inode(dentry);
+	inode_lock_shared(inode);
+
+	arg.sb = inode->i_sb;
+	err = si_read_lock(arg.sb, AuLock_FLUSH | AuLock_NOPLM);
+	if (unlikely(err))
+		goto out_mtx;
+	err = au_alive_dir(dentry);
+	if (unlikely(err))
+		goto out_si;
+	/* todo: reval? */
+	fi_read_lock(file);
+
+	err = -EAGAIN;
+	if (unlikely(au_ftest_rdu(cookie->flags, CONT)
+		     && cookie->generation != au_figen(file)))
+		goto out_unlock;
+
+	err = 0;
+	if (!rdu->blk) {
+		rdu->blk = au_sbi(arg.sb)->si_rdblk;
+		if (!rdu->blk)
+			rdu->blk = au_dir_size(file, /*dentry*/NULL);
+	}
+	bbot = au_fbtop(file);
+	if (cookie->bindex < bbot)
+		cookie->bindex = bbot;
+	bbot = au_fbbot_dir(file);
+	/* AuDbg("b%d, b%d\n", cookie->bindex, bbot); */
+	for (; !err && cookie->bindex <= bbot;
+	     cookie->bindex++, cookie->h_pos = 0) {
+		h_file = au_hf_dir(file, cookie->bindex);
+		if (!h_file)
+			continue;
+
+		au_fclr_rdu(cookie->flags, FULL);
+		err = au_rdu_do(h_file, &arg);
+		AuTraceErr(err);
+		if (unlikely(au_ftest_rdu(cookie->flags, FULL) || err))
+			break;
+	}
+	AuDbg("rent %llu\n", rdu->rent);
+
+	if (!err && !au_ftest_rdu(cookie->flags, CONT)) {
+		rdu->shwh = !!au_opt_test(au_sbi(arg.sb)->si_mntflags, SHWH);
+		au_fset_rdu(cookie->flags, CONT);
+		cookie->generation = au_figen(file);
+	}
+
+	ii_read_lock_child(inode);
+	fsstack_copy_attr_atime(inode, au_h_iptr(inode, au_ibtop(inode)));
+	ii_read_unlock(inode);
+
+out_unlock:
+	fi_read_unlock(file);
+out_si:
+	si_read_unlock(arg.sb);
+out_mtx:
+	inode_unlock_shared(inode);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_rdu_ino(struct file *file, struct aufs_rdu *rdu)
+{
+	int err;
+	ino_t ino;
+	unsigned long long nent;
+	union au_rdu_ent_ul *u;
+	struct au_rdu_ent ent;
+	struct super_block *sb;
+
+	err = 0;
+	nent = rdu->nent;
+	u = &rdu->ent;
+	sb = file->f_path.dentry->d_sb;
+	si_read_lock(sb, AuLock_FLUSH);
+	while (nent-- > 0) {
+		/* unnecessary to support mmap_sem since this is a dir */
+		err = copy_from_user(&ent, u->e, sizeof(ent));
+		if (!err)
+			/* VERIFY_WRITE */
+			err = !access_ok(&u->e->ino, sizeof(ino));
+		if (unlikely(err)) {
+			err = -EFAULT;
+			AuTraceErr(err);
+			break;
+		}
+
+		/* AuDbg("b%d, i%llu\n", ent.bindex, ent.ino); */
+		if (!ent.wh)
+			err = au_ino(sb, ent.bindex, ent.ino, ent.type, &ino);
+		else
+			err = au_wh_ino(sb, ent.bindex, ent.ino, ent.type,
+					&ino);
+		if (unlikely(err)) {
+			AuTraceErr(err);
+			break;
+		}
+
+		err = __put_user(ino, &u->e->ino);
+		if (unlikely(err)) {
+			err = -EFAULT;
+			AuTraceErr(err);
+			break;
+		}
+		u->ul += au_rdu_len(ent.nlen);
+	}
+	si_read_unlock(sb);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_rdu_verify(struct aufs_rdu *rdu)
+{
+	AuDbg("rdu{%llu, %p, %u | %u | %llu, %u, %u | "
+	      "%llu, b%d, 0x%x, g%u}\n",
+	      rdu->sz, rdu->ent.e, rdu->verify[AufsCtlRduV_SZ],
+	      rdu->blk,
+	      rdu->rent, rdu->shwh, rdu->full,
+	      rdu->cookie.h_pos, rdu->cookie.bindex, rdu->cookie.flags,
+	      rdu->cookie.generation);
+
+	if (rdu->verify[AufsCtlRduV_SZ] == sizeof(*rdu))
+		return 0;
+
+	AuDbg("%u:%u\n",
+	      rdu->verify[AufsCtlRduV_SZ], (unsigned int)sizeof(*rdu));
+	return -EINVAL;
+}
+
+long au_rdu_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	long err, e;
+	struct aufs_rdu rdu;
+	void __user *p = (void __user *)arg;
+
+	err = copy_from_user(&rdu, p, sizeof(rdu));
+	if (unlikely(err)) {
+		err = -EFAULT;
+		AuTraceErr(err);
+		goto out;
+	}
+	err = au_rdu_verify(&rdu);
+	if (unlikely(err))
+		goto out;
+
+	switch (cmd) {
+	case AUFS_CTL_RDU:
+		err = au_rdu(file, &rdu);
+		if (unlikely(err))
+			break;
+
+		e = copy_to_user(p, &rdu, sizeof(rdu));
+		if (unlikely(e)) {
+			err = -EFAULT;
+			AuTraceErr(err);
+		}
+		break;
+	case AUFS_CTL_RDU_INO:
+		err = au_rdu_ino(file, &rdu);
+		break;
+
+	default:
+		/* err = -ENOTTY; */
+		err = -EINVAL;
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+#ifdef CONFIG_COMPAT
+long au_rdu_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	long err, e;
+	struct aufs_rdu rdu;
+	void __user *p = compat_ptr(arg);
+
+	/* todo: get_user()? */
+	err = copy_from_user(&rdu, p, sizeof(rdu));
+	if (unlikely(err)) {
+		err = -EFAULT;
+		AuTraceErr(err);
+		goto out;
+	}
+	rdu.ent.e = compat_ptr(rdu.ent.ul);
+	err = au_rdu_verify(&rdu);
+	if (unlikely(err))
+		goto out;
+
+	switch (cmd) {
+	case AUFS_CTL_RDU:
+		err = au_rdu(file, &rdu);
+		if (unlikely(err))
+			break;
+
+		rdu.ent.ul = ptr_to_compat(rdu.ent.e);
+		rdu.tail.ul = ptr_to_compat(rdu.tail.e);
+		e = copy_to_user(p, &rdu, sizeof(rdu));
+		if (unlikely(e)) {
+			err = -EFAULT;
+			AuTraceErr(err);
+		}
+		break;
+	case AUFS_CTL_RDU_INO:
+		err = au_rdu_ino(file, &rdu);
+		break;
+
+	default:
+		/* err = -ENOTTY; */
+		err = -EINVAL;
+	}
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+#endif
diff -Naur --no-dereference a/fs/aufs/rwsem.h b/fs/aufs/rwsem.h
--- a/fs/aufs/rwsem.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/rwsem.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * simple read-write semaphore wrappers
+ */
+
+#ifndef __AUFS_RWSEM_H__
+#define __AUFS_RWSEM_H__
+
+#ifdef __KERNEL__
+
+#include "debug.h"
+
+/* in the future, the name 'au_rwsem' will be totally gone */
+#define au_rwsem	rw_semaphore
+
+/* to debug easier, do not make them inlined functions */
+#define AuRwMustNoWaiters(rw)	AuDebugOn(rwsem_is_contended(rw))
+
+#ifdef CONFIG_LOCKDEP
+/* rwsem_is_locked() is unusable */
+#define AuRwMustReadLock(rw)	AuDebugOn(IS_ENABLED(CONFIG_LOCKDEP)	\
+					  && !lockdep_recursing(current) \
+					  && debug_locks		\
+					  && !lockdep_is_held_type(rw, 1))
+#define AuRwMustWriteLock(rw)	AuDebugOn(IS_ENABLED(CONFIG_LOCKDEP)	\
+					  && !lockdep_recursing(current) \
+					  && debug_locks		\
+					  && !lockdep_is_held_type(rw, 0))
+#define AuRwMustAnyLock(rw)	AuDebugOn(IS_ENABLED(CONFIG_LOCKDEP)	\
+					  && !lockdep_recursing(current) \
+					  && debug_locks		\
+					  && !lockdep_is_held(rw))
+#define AuRwDestroy(rw)		AuDebugOn(IS_ENABLED(CONFIG_LOCKDEP)	\
+					  && !lockdep_recursing(current) \
+					  && debug_locks		\
+					  && lockdep_is_held(rw))
+#else
+#define AuRwMustReadLock(rw)	do {} while (0)
+#define AuRwMustWriteLock(rw)	do {} while (0)
+#define AuRwMustAnyLock(rw)	do {} while (0)
+#define AuRwDestroy(rw)		do {} while (0)
+#endif
+
+#define au_rw_init(rw)	init_rwsem(rw)
+
+#define au_rw_init_wlock(rw) do {		\
+		au_rw_init(rw);			\
+		down_write(rw);			\
+	} while (0)
+
+#define au_rw_init_wlock_nested(rw, lsc) do {	\
+		au_rw_init(rw);			\
+		down_write_nested(rw, lsc);	\
+	} while (0)
+
+#define au_rw_read_lock(rw)		down_read(rw)
+#define au_rw_read_lock_nested(rw, lsc)	down_read_nested(rw, lsc)
+#define au_rw_read_unlock(rw)		up_read(rw)
+#define au_rw_dgrade_lock(rw)		downgrade_write(rw)
+#define au_rw_write_lock(rw)		down_write(rw)
+#define au_rw_write_lock_nested(rw, lsc) down_write_nested(rw, lsc)
+#define au_rw_write_unlock(rw)		up_write(rw)
+/* why is not _nested version defined? */
+#define au_rw_read_trylock(rw)		down_read_trylock(rw)
+#define au_rw_write_trylock(rw)		down_write_trylock(rw)
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_RWSEM_H__ */
diff -Naur --no-dereference a/fs/aufs/sbinfo.c b/fs/aufs/sbinfo.c
--- a/fs/aufs/sbinfo.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/sbinfo.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,316 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * superblock private data
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+/*
+ * they are necessary regardless sysfs is disabled.
+ */
+void au_si_free(struct kobject *kobj)
+{
+	int i;
+	struct au_sbinfo *sbinfo;
+	char *locked __maybe_unused; /* debug only */
+
+	sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
+	for (i = 0; i < AuPlink_NHASH; i++)
+		AuDebugOn(!hlist_bl_empty(sbinfo->si_plink + i));
+	AuDebugOn(atomic_read(&sbinfo->si_nowait.nw_len));
+
+	AuLCntZero(au_lcnt_read(&sbinfo->si_ninodes, /*do_rev*/0));
+	au_lcnt_fin(&sbinfo->si_ninodes, /*do_sync*/0);
+	AuLCntZero(au_lcnt_read(&sbinfo->si_nfiles, /*do_rev*/0));
+	au_lcnt_fin(&sbinfo->si_nfiles, /*do_sync*/0);
+
+	dbgaufs_si_fin(sbinfo);
+	au_rw_write_lock(&sbinfo->si_rwsem);
+	au_br_free(sbinfo);
+	au_rw_write_unlock(&sbinfo->si_rwsem);
+
+	au_kfree_try_rcu(sbinfo->si_branch);
+	mutex_destroy(&sbinfo->si_xib_mtx);
+	AuRwDestroy(&sbinfo->si_rwsem);
+
+	au_lcnt_wait_for_fin(&sbinfo->si_ninodes);
+	/* si_nfiles is waited too */
+	au_kfree_rcu(sbinfo);
+}
+
+struct au_sbinfo *au_si_alloc(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+	int err, i;
+
+	err = -ENOMEM;
+	sbinfo = kzalloc(sizeof(*sbinfo), GFP_NOFS);
+	if (unlikely(!sbinfo))
+		goto out;
+
+	/* will be reallocated separately */
+	sbinfo->si_branch = kzalloc(sizeof(*sbinfo->si_branch), GFP_NOFS);
+	if (unlikely(!sbinfo->si_branch))
+		goto out_sbinfo;
+
+	err = sysaufs_si_init(sbinfo);
+	if (!err) {
+		dbgaufs_si_null(sbinfo);
+		err = dbgaufs_si_init(sbinfo);
+		if (unlikely(err))
+			kobject_put(&sbinfo->si_kobj);
+	}
+	if (unlikely(err))
+		goto out_br;
+
+	au_nwt_init(&sbinfo->si_nowait);
+	au_rw_init_wlock(&sbinfo->si_rwsem);
+
+	au_lcnt_init(&sbinfo->si_ninodes, /*release*/NULL);
+	au_lcnt_init(&sbinfo->si_nfiles, /*release*/NULL);
+
+	sbinfo->si_bbot = -1;
+	sbinfo->si_last_br_id = AUFS_BRANCH_MAX / 2;
+
+	sbinfo->si_wbr_copyup = AuWbrCopyup_Def;
+	sbinfo->si_wbr_create = AuWbrCreate_Def;
+	sbinfo->si_wbr_copyup_ops = au_wbr_copyup_ops + sbinfo->si_wbr_copyup;
+	sbinfo->si_wbr_create_ops = au_wbr_create_ops + sbinfo->si_wbr_create;
+
+	au_fhsm_init(sbinfo);
+
+	sbinfo->si_mntflags = au_opts_plink(AuOpt_Def);
+
+	sbinfo->si_xino_jiffy = jiffies;
+	sbinfo->si_xino_expire
+		= msecs_to_jiffies(AUFS_XINO_DEF_SEC * MSEC_PER_SEC);
+	mutex_init(&sbinfo->si_xib_mtx);
+	/* leave si_xib_last_pindex and si_xib_next_bit */
+
+	INIT_HLIST_BL_HEAD(&sbinfo->si_aopen);
+
+	sbinfo->si_rdcache = msecs_to_jiffies(AUFS_RDCACHE_DEF * MSEC_PER_SEC);
+	sbinfo->si_rdblk = AUFS_RDBLK_DEF;
+	sbinfo->si_rdhash = AUFS_RDHASH_DEF;
+	sbinfo->si_dirwh = AUFS_DIRWH_DEF;
+
+	for (i = 0; i < AuPlink_NHASH; i++)
+		INIT_HLIST_BL_HEAD(sbinfo->si_plink + i);
+	init_waitqueue_head(&sbinfo->si_plink_wq);
+	spin_lock_init(&sbinfo->si_plink_maint_lock);
+
+	INIT_HLIST_BL_HEAD(&sbinfo->si_files);
+
+	/* with getattr by default */
+	sbinfo->si_iop_array = aufs_iop;
+
+	/* leave other members for sysaufs and si_mnt. */
+	sbinfo->si_sb = sb;
+	if (sb) {
+		sb->s_fs_info = sbinfo;
+		si_pid_set(sb);
+	}
+	return sbinfo; /* success */
+
+out_br:
+	au_kfree_try_rcu(sbinfo->si_branch);
+out_sbinfo:
+	au_kfree_rcu(sbinfo);
+out:
+	return ERR_PTR(err);
+}
+
+int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink)
+{
+	int err, sz;
+	struct au_branch **brp;
+
+	AuRwMustWriteLock(&sbinfo->si_rwsem);
+
+	err = -ENOMEM;
+	sz = sizeof(*brp) * (sbinfo->si_bbot + 1);
+	if (unlikely(!sz))
+		sz = sizeof(*brp);
+	brp = au_kzrealloc(sbinfo->si_branch, sz, sizeof(*brp) * nbr, GFP_NOFS,
+			   may_shrink);
+	if (brp) {
+		sbinfo->si_branch = brp;
+		err = 0;
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+unsigned int au_sigen_inc(struct super_block *sb)
+{
+	unsigned int gen;
+	struct inode *inode;
+
+	SiMustWriteLock(sb);
+
+	gen = ++au_sbi(sb)->si_generation;
+	au_update_digen(sb->s_root);
+	inode = d_inode(sb->s_root);
+	au_update_iigen(inode, /*half*/0);
+	inode_inc_iversion(inode);
+	return gen;
+}
+
+aufs_bindex_t au_new_br_id(struct super_block *sb)
+{
+	aufs_bindex_t br_id;
+	int i;
+	struct au_sbinfo *sbinfo;
+
+	SiMustWriteLock(sb);
+
+	sbinfo = au_sbi(sb);
+	for (i = 0; i <= AUFS_BRANCH_MAX; i++) {
+		br_id = ++sbinfo->si_last_br_id;
+		AuDebugOn(br_id < 0);
+		if (br_id && au_br_index(sb, br_id) < 0)
+			return br_id;
+	}
+
+	return -1;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* it is ok that new 'nwt' tasks are appended while we are sleeping */
+int si_read_lock(struct super_block *sb, int flags)
+{
+	int err;
+
+	err = 0;
+	if (au_ftest_lock(flags, FLUSH))
+		au_nwt_flush(&au_sbi(sb)->si_nowait);
+
+	si_noflush_read_lock(sb);
+	err = au_plink_maint(sb, flags);
+	if (unlikely(err))
+		si_read_unlock(sb);
+
+	return err;
+}
+
+int si_write_lock(struct super_block *sb, int flags)
+{
+	int err;
+
+	if (au_ftest_lock(flags, FLUSH))
+		au_nwt_flush(&au_sbi(sb)->si_nowait);
+
+	si_noflush_write_lock(sb);
+	err = au_plink_maint(sb, flags);
+	if (unlikely(err))
+		si_write_unlock(sb);
+
+	return err;
+}
+
+/* dentry and super_block lock. call at entry point */
+int aufs_read_lock(struct dentry *dentry, int flags)
+{
+	int err;
+	struct super_block *sb;
+
+	sb = dentry->d_sb;
+	err = si_read_lock(sb, flags);
+	if (unlikely(err))
+		goto out;
+
+	if (au_ftest_lock(flags, DW))
+		di_write_lock_child(dentry);
+	else
+		di_read_lock_child(dentry, flags);
+
+	if (au_ftest_lock(flags, GEN)) {
+		err = au_digen_test(dentry, au_sigen(sb));
+		if (!au_opt_test(au_mntflags(sb), UDBA_NONE))
+			AuDebugOn(!err && au_dbrange_test(dentry));
+		else if (!err)
+			err = au_dbrange_test(dentry);
+		if (unlikely(err))
+			aufs_read_unlock(dentry, flags);
+	}
+
+out:
+	return err;
+}
+
+void aufs_read_unlock(struct dentry *dentry, int flags)
+{
+	if (au_ftest_lock(flags, DW))
+		di_write_unlock(dentry);
+	else
+		di_read_unlock(dentry, flags);
+	si_read_unlock(dentry->d_sb);
+}
+
+void aufs_write_lock(struct dentry *dentry)
+{
+	si_write_lock(dentry->d_sb, AuLock_FLUSH | AuLock_NOPLMW);
+	di_write_lock_child(dentry);
+}
+
+void aufs_write_unlock(struct dentry *dentry)
+{
+	di_write_unlock(dentry);
+	si_write_unlock(dentry->d_sb);
+}
+
+int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags)
+{
+	int err;
+	unsigned int sigen;
+	struct super_block *sb;
+
+	sb = d1->d_sb;
+	err = si_read_lock(sb, flags);
+	if (unlikely(err))
+		goto out;
+
+	di_write_lock2_child(d1, d2, au_ftest_lock(flags, DIRS));
+
+	if (au_ftest_lock(flags, GEN)) {
+		sigen = au_sigen(sb);
+		err = au_digen_test(d1, sigen);
+		AuDebugOn(!err && au_dbrange_test(d1));
+		if (!err) {
+			err = au_digen_test(d2, sigen);
+			AuDebugOn(!err && au_dbrange_test(d2));
+		}
+		if (unlikely(err))
+			aufs_read_and_write_unlock2(d1, d2);
+	}
+
+out:
+	return err;
+}
+
+void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2)
+{
+	di_write_unlock2(d1, d2);
+	si_read_unlock(d1->d_sb);
+}
diff -Naur --no-dereference a/fs/aufs/super.c b/fs/aufs/super.c
--- a/fs/aufs/super.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/super.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,871 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * mount and super_block operations
+ */
+
+#include <linux/iversion.h>
+#include <linux/mm.h>
+#include <linux/seq_file.h>
+#include <linux/statfs.h>
+#include <linux/vmalloc.h>
+#include "aufs.h"
+
+/*
+ * super_operations
+ */
+static struct inode *aufs_alloc_inode(struct super_block *sb __maybe_unused)
+{
+	struct au_icntnr *c;
+
+	c = au_cache_alloc_icntnr();
+	if (c) {
+		au_icntnr_init(c);
+		inode_set_iversion(&c->vfs_inode, 1); /* sigen(sb); */
+		c->iinfo.ii_hinode = NULL;
+		return &c->vfs_inode;
+	}
+	return NULL;
+}
+
+static void aufs_destroy_inode(struct inode *inode)
+{
+	if (!au_is_bad_inode(inode))
+		au_iinfo_fin(inode);
+}
+
+static void aufs_free_inode(struct inode *inode)
+{
+	au_cache_free_icntnr(container_of(inode, struct au_icntnr, vfs_inode));
+}
+
+struct inode *au_iget_locked(struct super_block *sb, ino_t ino)
+{
+	struct inode *inode;
+	int err;
+
+	inode = iget_locked(sb, ino);
+	if (unlikely(!inode)) {
+		inode = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+	if (!(inode->i_state & I_NEW))
+		goto out;
+
+	err = au_xigen_new(inode);
+	if (!err)
+		err = au_iinfo_init(inode);
+	if (!err)
+		inode_inc_iversion(inode);
+	else {
+		iget_failed(inode);
+		inode = ERR_PTR(err);
+	}
+
+out:
+	/* never return NULL */
+	AuDebugOn(!inode);
+	AuTraceErrPtr(inode);
+	return inode;
+}
+
+/* lock free root dinfo */
+static int au_show_brs(struct seq_file *seq, struct super_block *sb)
+{
+	int err;
+	aufs_bindex_t bindex, bbot;
+	struct path path;
+	struct au_hdentry *hdp;
+	struct au_branch *br;
+	au_br_perm_str_t perm;
+
+	err = 0;
+	bbot = au_sbbot(sb);
+	bindex = 0;
+	hdp = au_hdentry(au_di(sb->s_root), bindex);
+	for (; !err && bindex <= bbot; bindex++, hdp++) {
+		br = au_sbr(sb, bindex);
+		path.mnt = au_br_mnt(br);
+		path.dentry = hdp->hd_dentry;
+		err = au_seq_path(seq, &path);
+		if (!err) {
+			au_optstr_br_perm(&perm, br->br_perm);
+			seq_printf(seq, "=%s", perm.a);
+			if (bindex != bbot)
+				seq_putc(seq, ':');
+		}
+	}
+	if (unlikely(err || seq_has_overflowed(seq)))
+		err = -E2BIG;
+
+	return err;
+}
+
+static void au_gen_fmt(char *fmt, int len __maybe_unused, const char *pat,
+		       const char *append)
+{
+	char *p;
+
+	p = fmt;
+	while (*pat != ':')
+		*p++ = *pat++;
+	*p++ = *pat++;
+	strcpy(p, append);
+	AuDebugOn(strlen(fmt) >= len);
+}
+
+static void au_show_wbr_create(struct seq_file *m, int v,
+			       struct au_sbinfo *sbinfo)
+{
+	const char *pat;
+	char fmt[32];
+	struct au_wbr_mfs *mfs;
+
+	AuRwMustAnyLock(&sbinfo->si_rwsem);
+
+	seq_puts(m, ",create=");
+	pat = au_optstr_wbr_create(v);
+	mfs = &sbinfo->si_wbr_mfs;
+	switch (v) {
+	case AuWbrCreate_TDP:
+	case AuWbrCreate_RR:
+	case AuWbrCreate_MFS:
+	case AuWbrCreate_PMFS:
+		seq_puts(m, pat);
+		break;
+	case AuWbrCreate_MFSRR:
+	case AuWbrCreate_TDMFS:
+	case AuWbrCreate_PMFSRR:
+		au_gen_fmt(fmt, sizeof(fmt), pat, "%llu");
+		seq_printf(m, fmt, mfs->mfsrr_watermark);
+		break;
+	case AuWbrCreate_MFSV:
+	case AuWbrCreate_PMFSV:
+		au_gen_fmt(fmt, sizeof(fmt), pat, "%lu");
+		seq_printf(m, fmt,
+			   jiffies_to_msecs(mfs->mfs_expire)
+			   / MSEC_PER_SEC);
+		break;
+	case AuWbrCreate_MFSRRV:
+	case AuWbrCreate_TDMFSV:
+	case AuWbrCreate_PMFSRRV:
+		au_gen_fmt(fmt, sizeof(fmt), pat, "%llu:%lu");
+		seq_printf(m, fmt, mfs->mfsrr_watermark,
+			   jiffies_to_msecs(mfs->mfs_expire) / MSEC_PER_SEC);
+		break;
+	default:
+		BUG();
+	}
+}
+
+static int au_show_xino(struct seq_file *seq, struct super_block *sb)
+{
+#ifdef CONFIG_SYSFS
+	return 0;
+#else
+	int err;
+	const int len = sizeof(AUFS_XINO_FNAME) - 1;
+	aufs_bindex_t bindex, brid;
+	struct qstr *name;
+	struct file *f;
+	struct dentry *d, *h_root;
+	struct au_branch *br;
+
+	AuRwMustAnyLock(&sbinfo->si_rwsem);
+
+	err = 0;
+	f = au_sbi(sb)->si_xib;
+	if (!f)
+		goto out;
+
+	/* stop printing the default xino path on the first writable branch */
+	h_root = NULL;
+	bindex = au_xi_root(sb, f->f_path.dentry);
+	if (bindex >= 0) {
+		br = au_sbr_sb(sb, bindex);
+		h_root = au_br_dentry(br);
+	}
+
+	d = f->f_path.dentry;
+	name = &d->d_name;
+	/* safe ->d_parent because the file is unlinked */
+	if (d->d_parent == h_root
+	    && name->len == len
+	    && !memcmp(name->name, AUFS_XINO_FNAME, len))
+		goto out;
+
+	seq_puts(seq, ",xino=");
+	err = au_xino_path(seq, f);
+
+out:
+	return err;
+#endif
+}
+
+/* seq_file will re-call me in case of too long string */
+static int aufs_show_options(struct seq_file *m, struct dentry *dentry)
+{
+	int err;
+	unsigned int mnt_flags, v;
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+
+#define AuBool(name, str) do { \
+	v = au_opt_test(mnt_flags, name); \
+	if (v != au_opt_test(AuOpt_Def, name)) \
+		seq_printf(m, ",%s" #str, v ? "" : "no"); \
+} while (0)
+
+#define AuStr(name, str) do { \
+	v = mnt_flags & AuOptMask_##name; \
+	if (v != (AuOpt_Def & AuOptMask_##name)) \
+		seq_printf(m, "," #str "=%s", au_optstr_##str(v)); \
+} while (0)
+
+#define AuUInt(name, str, val) do { \
+	if (val != AUFS_##name##_DEF) \
+		seq_printf(m, "," #str "=%u", val); \
+} while (0)
+
+	sb = dentry->d_sb;
+	if (sb->s_flags & SB_POSIXACL)
+		seq_puts(m, ",acl");
+#if 0 /* reserved for future use */
+	if (sb->s_flags & SB_I_VERSION)
+		seq_puts(m, ",i_version");
+#endif
+
+	/* lock free root dinfo */
+	si_noflush_read_lock(sb);
+	sbinfo = au_sbi(sb);
+	seq_printf(m, ",si=%lx", sysaufs_si_id(sbinfo));
+
+	mnt_flags = au_mntflags(sb);
+	if (au_opt_test(mnt_flags, XINO)) {
+		err = au_show_xino(m, sb);
+		if (unlikely(err))
+			goto out;
+	} else
+		seq_puts(m, ",noxino");
+
+	AuBool(TRUNC_XINO, trunc_xino);
+	AuStr(UDBA, udba);
+	AuBool(SHWH, shwh);
+	AuBool(PLINK, plink);
+	AuBool(DIO, dio);
+	AuBool(DIRPERM1, dirperm1);
+
+	v = sbinfo->si_wbr_create;
+	if (v != AuWbrCreate_Def)
+		au_show_wbr_create(m, v, sbinfo);
+
+	v = sbinfo->si_wbr_copyup;
+	if (v != AuWbrCopyup_Def)
+		seq_printf(m, ",cpup=%s", au_optstr_wbr_copyup(v));
+
+	v = au_opt_test(mnt_flags, ALWAYS_DIROPQ);
+	if (v != au_opt_test(AuOpt_Def, ALWAYS_DIROPQ))
+		seq_printf(m, ",diropq=%c", v ? 'a' : 'w');
+
+	AuUInt(DIRWH, dirwh, sbinfo->si_dirwh);
+
+	v = jiffies_to_msecs(sbinfo->si_rdcache) / MSEC_PER_SEC;
+	AuUInt(RDCACHE, rdcache, v);
+
+	AuUInt(RDBLK, rdblk, sbinfo->si_rdblk);
+	AuUInt(RDHASH, rdhash, sbinfo->si_rdhash);
+
+	au_fhsm_show(m, sbinfo);
+
+	AuBool(DIRREN, dirren);
+	AuBool(SUM, sum);
+	/* AuBool(SUM_W, wsum); */
+	AuBool(WARN_PERM, warn_perm);
+	AuBool(VERBOSE, verbose);
+
+out:
+	/* be sure to print "br:" last */
+	if (!sysaufs_brs) {
+		seq_puts(m, ",br:");
+		au_show_brs(m, sb);
+	}
+	si_read_unlock(sb);
+	return 0;
+
+#undef AuBool
+#undef AuStr
+#undef AuUInt
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* sum mode which returns the summation for statfs(2) */
+
+static u64 au_add_till_max(u64 a, u64 b)
+{
+	u64 old;
+
+	old = a;
+	a += b;
+	if (old <= a)
+		return a;
+	return ULLONG_MAX;
+}
+
+static u64 au_mul_till_max(u64 a, long mul)
+{
+	u64 old;
+
+	old = a;
+	a *= mul;
+	if (old <= a)
+		return a;
+	return ULLONG_MAX;
+}
+
+static int au_statfs_sum(struct super_block *sb, struct kstatfs *buf)
+{
+	int err;
+	long bsize, factor;
+	u64 blocks, bfree, bavail, files, ffree;
+	aufs_bindex_t bbot, bindex, i;
+	unsigned char shared;
+	struct path h_path;
+	struct super_block *h_sb;
+
+	err = 0;
+	bsize = LONG_MAX;
+	files = 0;
+	ffree = 0;
+	blocks = 0;
+	bfree = 0;
+	bavail = 0;
+	bbot = au_sbbot(sb);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		h_path.mnt = au_sbr_mnt(sb, bindex);
+		h_sb = h_path.mnt->mnt_sb;
+		shared = 0;
+		for (i = 0; !shared && i < bindex; i++)
+			shared = (au_sbr_sb(sb, i) == h_sb);
+		if (shared)
+			continue;
+
+		/* sb->s_root for NFS is unreliable */
+		h_path.dentry = h_path.mnt->mnt_root;
+		err = vfs_statfs(&h_path, buf);
+		if (unlikely(err))
+			goto out;
+
+		if (bsize > buf->f_bsize) {
+			/*
+			 * we will reduce bsize, so we have to expand blocks
+			 * etc. to match them again
+			 */
+			factor = (bsize / buf->f_bsize);
+			blocks = au_mul_till_max(blocks, factor);
+			bfree = au_mul_till_max(bfree, factor);
+			bavail = au_mul_till_max(bavail, factor);
+			bsize = buf->f_bsize;
+		}
+
+		factor = (buf->f_bsize / bsize);
+		blocks = au_add_till_max(blocks,
+				au_mul_till_max(buf->f_blocks, factor));
+		bfree = au_add_till_max(bfree,
+				au_mul_till_max(buf->f_bfree, factor));
+		bavail = au_add_till_max(bavail,
+				au_mul_till_max(buf->f_bavail, factor));
+		files = au_add_till_max(files, buf->f_files);
+		ffree = au_add_till_max(ffree, buf->f_ffree);
+	}
+
+	buf->f_bsize = bsize;
+	buf->f_blocks = blocks;
+	buf->f_bfree = bfree;
+	buf->f_bavail = bavail;
+	buf->f_files = files;
+	buf->f_ffree = ffree;
+	buf->f_frsize = 0;
+
+out:
+	return err;
+}
+
+static int aufs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+	int err;
+	struct path h_path;
+	struct super_block *sb;
+
+	/* lock free root dinfo */
+	sb = dentry->d_sb;
+	si_noflush_read_lock(sb);
+	if (!au_opt_test(au_mntflags(sb), SUM)) {
+		/* sb->s_root for NFS is unreliable */
+		h_path.mnt = au_sbr_mnt(sb, 0);
+		h_path.dentry = h_path.mnt->mnt_root;
+		err = vfs_statfs(&h_path, buf);
+	} else
+		err = au_statfs_sum(sb, buf);
+	si_read_unlock(sb);
+
+	if (!err) {
+		buf->f_type = AUFS_SUPER_MAGIC;
+		buf->f_namelen = AUFS_MAX_NAMELEN;
+		memset(&buf->f_fsid, 0, sizeof(buf->f_fsid));
+	}
+	/* buf->f_bsize = buf->f_blocks = buf->f_bfree = buf->f_bavail = -1; */
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int aufs_sync_fs(struct super_block *sb, int wait)
+{
+	int err, e;
+	aufs_bindex_t bbot, bindex;
+	struct au_branch *br;
+	struct super_block *h_sb;
+
+	err = 0;
+	si_noflush_read_lock(sb);
+	bbot = au_sbbot(sb);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		if (!au_br_writable(br->br_perm))
+			continue;
+
+		h_sb = au_sbr_sb(sb, bindex);
+		e = vfsub_sync_filesystem(h_sb);
+		if (unlikely(e && !err))
+			err = e;
+		/* go on even if an error happens */
+	}
+	si_read_unlock(sb);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* final actions when unmounting a file system */
+static void aufs_put_super(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+
+	sbinfo = au_sbi(sb);
+	if (sbinfo)
+		kobject_put(&sbinfo->si_kobj);
+}
+
+/* ---------------------------------------------------------------------- */
+
+void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb,
+		     struct super_block *sb, void *arg)
+{
+	void *array;
+	unsigned long long n, sz;
+
+	array = NULL;
+	n = 0;
+	if (!*hint)
+		goto out;
+
+	if (*hint > ULLONG_MAX / sizeof(array)) {
+		array = ERR_PTR(-EMFILE);
+		pr_err("hint %llu\n", *hint);
+		goto out;
+	}
+
+	sz = sizeof(array) * *hint;
+	array = kzalloc(sz, GFP_NOFS);
+	if (unlikely(!array))
+		array = vzalloc(sz);
+	if (unlikely(!array)) {
+		array = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+
+	n = cb(sb, array, *hint, arg);
+	AuDebugOn(n > *hint);
+
+out:
+	*hint = n;
+	return array;
+}
+
+static unsigned long long au_iarray_cb(struct super_block *sb, void *a,
+				       unsigned long long max __maybe_unused,
+				       void *arg)
+{
+	unsigned long long n;
+	struct inode **p, *inode;
+	struct list_head *head;
+
+	n = 0;
+	p = a;
+	head = arg;
+	spin_lock(&sb->s_inode_list_lock);
+	list_for_each_entry(inode, head, i_sb_list) {
+		if (!au_is_bad_inode(inode)
+		    && au_ii(inode)->ii_btop >= 0) {
+			spin_lock(&inode->i_lock);
+			if (atomic_read(&inode->i_count)) {
+				au_igrab(inode);
+				*p++ = inode;
+				n++;
+				AuDebugOn(n > max);
+			}
+			spin_unlock(&inode->i_lock);
+		}
+	}
+	spin_unlock(&sb->s_inode_list_lock);
+
+	return n;
+}
+
+struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max)
+{
+	struct au_sbinfo *sbi;
+
+	sbi = au_sbi(sb);
+	*max = au_lcnt_read(&sbi->si_ninodes, /*do_rev*/1);
+	return au_array_alloc(max, au_iarray_cb, sb, &sb->s_inodes);
+}
+
+void au_iarray_free(struct inode **a, unsigned long long max)
+{
+	unsigned long long ull;
+
+	for (ull = 0; ull < max; ull++)
+		iput(a[ull]);
+	kvfree(a);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * refresh dentry and inode at remount time.
+ */
+/* todo: consolidate with simple_reval_dpath() and au_reval_for_attr() */
+static int au_do_refresh(struct dentry *dentry, unsigned int dir_flags,
+		      struct dentry *parent)
+{
+	int err;
+
+	di_write_lock_child(dentry);
+	di_read_lock_parent(parent, AuLock_IR);
+	err = au_refresh_dentry(dentry, parent);
+	if (!err && dir_flags)
+		au_hn_reset(d_inode(dentry), dir_flags);
+	di_read_unlock(parent, AuLock_IR);
+	di_write_unlock(dentry);
+
+	return err;
+}
+
+static int au_do_refresh_d(struct dentry *dentry, unsigned int sigen,
+			   struct au_sbinfo *sbinfo,
+			   const unsigned int dir_flags, unsigned int do_idop)
+{
+	int err;
+	struct dentry *parent;
+
+	err = 0;
+	parent = dget_parent(dentry);
+	if (!au_digen_test(parent, sigen) && au_digen_test(dentry, sigen)) {
+		if (d_really_is_positive(dentry)) {
+			if (!d_is_dir(dentry))
+				err = au_do_refresh(dentry, /*dir_flags*/0,
+						 parent);
+			else {
+				err = au_do_refresh(dentry, dir_flags, parent);
+				if (unlikely(err))
+					au_fset_si(sbinfo, FAILED_REFRESH_DIR);
+			}
+		} else
+			err = au_do_refresh(dentry, /*dir_flags*/0, parent);
+		AuDbgDentry(dentry);
+	}
+	dput(parent);
+
+	if (!err) {
+		if (do_idop)
+			au_refresh_dop(dentry, /*force_reval*/0);
+	} else
+		au_refresh_dop(dentry, /*force_reval*/1);
+
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_refresh_d(struct super_block *sb, unsigned int do_idop)
+{
+	int err, i, j, ndentry, e;
+	unsigned int sigen;
+	struct au_dcsub_pages dpages;
+	struct au_dpage *dpage;
+	struct dentry **dentries, *d;
+	struct au_sbinfo *sbinfo;
+	struct dentry *root = sb->s_root;
+	const unsigned int dir_flags = au_hi_flags(d_inode(root), /*isdir*/1);
+
+	if (do_idop)
+		au_refresh_dop(root, /*force_reval*/0);
+
+	err = au_dpages_init(&dpages, GFP_NOFS);
+	if (unlikely(err))
+		goto out;
+	err = au_dcsub_pages(&dpages, root, NULL, NULL);
+	if (unlikely(err))
+		goto out_dpages;
+
+	sigen = au_sigen(sb);
+	sbinfo = au_sbi(sb);
+	for (i = 0; i < dpages.ndpage; i++) {
+		dpage = dpages.dpages + i;
+		dentries = dpage->dentries;
+		ndentry = dpage->ndentry;
+		for (j = 0; j < ndentry; j++) {
+			d = dentries[j];
+			e = au_do_refresh_d(d, sigen, sbinfo, dir_flags,
+					    do_idop);
+			if (unlikely(e && !err))
+				err = e;
+			/* go on even err */
+		}
+	}
+
+out_dpages:
+	au_dpages_free(&dpages);
+out:
+	return err;
+}
+
+static int au_refresh_i(struct super_block *sb, unsigned int do_idop)
+{
+	int err, e;
+	unsigned int sigen;
+	unsigned long long max, ull;
+	struct inode *inode, **array;
+
+	array = au_iarray_alloc(sb, &max);
+	err = PTR_ERR(array);
+	if (IS_ERR(array))
+		goto out;
+
+	err = 0;
+	sigen = au_sigen(sb);
+	for (ull = 0; ull < max; ull++) {
+		inode = array[ull];
+		if (unlikely(!inode))
+			break;
+
+		e = 0;
+		ii_write_lock_child(inode);
+		if (au_iigen(inode, NULL) != sigen) {
+			e = au_refresh_hinode_self(inode);
+			if (unlikely(e)) {
+				au_refresh_iop(inode, /*force_getattr*/1);
+				pr_err("error %d, i%lu\n", e, inode->i_ino);
+				if (!err)
+					err = e;
+				/* go on even if err */
+			}
+		}
+		if (!e && do_idop)
+			au_refresh_iop(inode, /*force_getattr*/0);
+		ii_write_unlock(inode);
+	}
+
+	au_iarray_free(array, max);
+
+out:
+	return err;
+}
+
+void au_remount_refresh(struct super_block *sb, unsigned int do_idop)
+{
+	int err, e;
+	unsigned int udba;
+	aufs_bindex_t bindex, bbot;
+	struct dentry *root;
+	struct inode *inode;
+	struct au_branch *br;
+	struct au_sbinfo *sbi;
+
+	au_sigen_inc(sb);
+	sbi = au_sbi(sb);
+	au_fclr_si(sbi, FAILED_REFRESH_DIR);
+
+	root = sb->s_root;
+	DiMustNoWaiters(root);
+	inode = d_inode(root);
+	IiMustNoWaiters(inode);
+
+	udba = au_opt_udba(sb);
+	bbot = au_sbbot(sb);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		err = au_hnotify_reset_br(udba, br, br->br_perm);
+		if (unlikely(err))
+			AuIOErr("hnotify failed on br %d, %d, ignored\n",
+				bindex, err);
+		/* go on even if err */
+	}
+	au_hn_reset(inode, au_hi_flags(inode, /*isdir*/1));
+
+	if (do_idop) {
+		if (au_ftest_si(sbi, NO_DREVAL)) {
+			AuDebugOn(sb->s_d_op == &aufs_dop_noreval);
+			sb->s_d_op = &aufs_dop_noreval;
+			AuDebugOn(sbi->si_iop_array == aufs_iop_nogetattr);
+			sbi->si_iop_array = aufs_iop_nogetattr;
+		} else {
+			AuDebugOn(sb->s_d_op == &aufs_dop);
+			sb->s_d_op = &aufs_dop;
+			AuDebugOn(sbi->si_iop_array == aufs_iop);
+			sbi->si_iop_array = aufs_iop;
+		}
+		pr_info("reset to %ps and %ps\n",
+			sb->s_d_op, sbi->si_iop_array);
+	}
+
+	di_write_unlock(root);
+	err = au_refresh_d(sb, do_idop);
+	e = au_refresh_i(sb, do_idop);
+	if (unlikely(e && !err))
+		err = e;
+	/* aufs_write_lock() calls ..._child() */
+	di_write_lock_child(root);
+
+	au_cpup_attr_all(inode, /*force*/1);
+
+	if (unlikely(err))
+		AuIOErr("refresh failed, ignored, %d\n", err);
+}
+
+const struct super_operations aufs_sop = {
+	.alloc_inode	= aufs_alloc_inode,
+	.destroy_inode	= aufs_destroy_inode,
+	.free_inode	= aufs_free_inode,
+	/* always deleting, no clearing */
+	.drop_inode	= generic_delete_inode,
+	.show_options	= aufs_show_options,
+	.statfs		= aufs_statfs,
+	.put_super	= aufs_put_super,
+	.sync_fs	= aufs_sync_fs
+};
+
+/* ---------------------------------------------------------------------- */
+
+int au_alloc_root(struct super_block *sb)
+{
+	int err;
+	struct inode *inode;
+	struct dentry *root;
+
+	err = -ENOMEM;
+	inode = au_iget_locked(sb, AUFS_ROOT_INO);
+	err = PTR_ERR(inode);
+	if (IS_ERR(inode))
+		goto out;
+
+	inode->i_op = aufs_iop + AuIop_DIR; /* with getattr by default */
+	inode->i_fop = &aufs_dir_fop;
+	inode->i_mode = S_IFDIR;
+	set_nlink(inode, 2);
+	unlock_new_inode(inode);
+
+	root = d_make_root(inode);
+	if (unlikely(!root))
+		goto out;
+	err = PTR_ERR(root);
+	if (IS_ERR(root))
+		goto out;
+
+	err = au_di_init(root);
+	if (!err) {
+		sb->s_root = root;
+		return 0; /* success */
+	}
+	dput(root);
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void aufs_kill_sb(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+	struct dentry *root;
+
+	sbinfo = au_sbi(sb);
+	if (!sbinfo)
+		goto out;
+
+	au_sbilist_del(sb);
+
+	root = sb->s_root;
+	if (root)
+		aufs_write_lock(root);
+	else
+		__si_write_lock(sb);
+
+	au_fhsm_fin(sb);
+	if (sbinfo->si_wbr_create_ops->fin)
+		sbinfo->si_wbr_create_ops->fin(sb);
+	if (au_opt_test(sbinfo->si_mntflags, UDBA_HNOTIFY)) {
+		au_opt_set_udba(sbinfo->si_mntflags, UDBA_NONE);
+		au_remount_refresh(sb, /*do_idop*/0);
+	}
+	if (au_opt_test(sbinfo->si_mntflags, PLINK))
+		au_plink_put(sb, /*verbose*/1);
+	au_xino_clr(sb);
+	if (root)
+		au_dr_opt_flush(sb);
+
+	if (root)
+		aufs_write_unlock(root);
+	else
+		__si_write_unlock(sb);
+
+	sbinfo->si_sb = NULL;
+	au_nwt_flush(&sbinfo->si_nowait);
+
+out:
+	kill_anon_super(sb);
+}
+
+struct file_system_type aufs_fs_type = {
+	.name		= AUFS_FSTYPE,
+	/* a race between rename and others */
+	.fs_flags	= FS_RENAME_DOES_D_MOVE
+				/* untested */
+				/*| FS_ALLOW_IDMAP*/
+				,
+	.init_fs_context = aufs_fsctx_init,
+	.parameters	= aufs_fsctx_paramspec,
+	.kill_sb	= aufs_kill_sb,
+	/* no need to __module_get() and module_put(). */
+	.owner		= THIS_MODULE,
+};
diff -Naur --no-dereference a/fs/aufs/super.h b/fs/aufs/super.h
--- a/fs/aufs/super.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/super.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,592 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * super_block operations
+ */
+
+#ifndef __AUFS_SUPER_H__
+#define __AUFS_SUPER_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/kobject.h>
+#include "hbl.h"
+#include "lcnt.h"
+#include "rwsem.h"
+#include "wkq.h"
+
+/* policies to select one among multiple writable branches */
+struct au_wbr_copyup_operations {
+	int (*copyup)(struct dentry *dentry);
+};
+
+#define AuWbr_DIR	1		/* target is a dir */
+#define AuWbr_PARENT	(1 << 1)	/* always require a parent */
+
+#define au_ftest_wbr(flags, name)	((flags) & AuWbr_##name)
+#define au_fset_wbr(flags, name)	{ (flags) |= AuWbr_##name; }
+#define au_fclr_wbr(flags, name)	{ (flags) &= ~AuWbr_##name; }
+
+struct au_wbr_create_operations {
+	int (*create)(struct dentry *dentry, unsigned int flags);
+	int (*init)(struct super_block *sb);
+	int (*fin)(struct super_block *sb);
+};
+
+struct au_wbr_mfs {
+	struct mutex	mfs_lock; /* protect this structure */
+	unsigned long	mfs_jiffy;
+	unsigned long	mfs_expire;
+	aufs_bindex_t	mfs_bindex;
+
+	unsigned long long	mfsrr_bytes;
+	unsigned long long	mfsrr_watermark;
+};
+
+#define AuPlink_NHASH 100
+static inline int au_plink_hash(ino_t ino)
+{
+	return ino % AuPlink_NHASH;
+}
+
+/* File-based Hierarchical Storage Management */
+struct au_fhsm {
+#ifdef CONFIG_AUFS_FHSM
+	/* allow only one process who can receive the notification */
+	spinlock_t		fhsm_spin;
+	pid_t			fhsm_pid;
+	wait_queue_head_t	fhsm_wqh;
+	atomic_t		fhsm_readable;
+
+	/* these are protected by si_rwsem */
+	unsigned long		fhsm_expire;
+	aufs_bindex_t		fhsm_bottom;
+#endif
+};
+
+struct au_branch;
+struct au_sbinfo {
+	/* nowait tasks in the system-wide workqueue */
+	struct au_nowait_tasks	si_nowait;
+
+	/*
+	 * tried sb->s_umount, but failed due to the dependency between i_mutex.
+	 * rwsem for au_sbinfo is necessary.
+	 */
+	struct au_rwsem		si_rwsem;
+
+	/*
+	 * dirty approach to protect sb->sb_inodes and ->s_files (gone) from
+	 * remount.
+	 */
+	au_lcnt_t		si_ninodes, si_nfiles;
+
+	/* branch management */
+	unsigned int		si_generation;
+
+	/* see AuSi_ flags */
+	unsigned char		au_si_status;
+
+	aufs_bindex_t		si_bbot;
+
+	/* dirty trick to keep br_id plus */
+	unsigned int		si_last_br_id :
+				sizeof(aufs_bindex_t) * BITS_PER_BYTE - 1;
+	struct au_branch	**si_branch;
+
+	/* policy to select a writable branch */
+	unsigned char		si_wbr_copyup;
+	unsigned char		si_wbr_create;
+	struct au_wbr_copyup_operations *si_wbr_copyup_ops;
+	struct au_wbr_create_operations *si_wbr_create_ops;
+
+	/* round robin */
+	atomic_t		si_wbr_rr_next;
+
+	/* most free space */
+	struct au_wbr_mfs	si_wbr_mfs;
+
+	/* File-based Hierarchical Storage Management */
+	struct au_fhsm		si_fhsm;
+
+	/* mount flags */
+	/* include/asm-ia64/siginfo.h defines a macro named si_flags */
+	unsigned int		si_mntflags;
+
+	/* external inode number (bitmap and translation table) */
+	loff_t			si_ximaxent;	/* max entries in a xino */
+
+	struct file		*si_xib;
+	struct mutex		si_xib_mtx; /* protect xib members */
+	unsigned long		*si_xib_buf;
+	unsigned long		si_xib_last_pindex;
+	int			si_xib_next_bit;
+
+	unsigned long		si_xino_jiffy;
+	unsigned long		si_xino_expire;
+	/* reserved for future use */
+	/* unsigned long long	si_xib_limit; */	/* Max xib file size */
+
+#ifdef CONFIG_AUFS_EXPORT
+	/* i_generation */
+	/* todo: make xigen file an array to support many inode numbers */
+	struct file		*si_xigen;
+	atomic_t		si_xigen_next;
+#endif
+
+	/* dirty trick to support atomic_open */
+	struct hlist_bl_head	si_aopen;
+
+	/* vdir parameters */
+	unsigned long		si_rdcache;	/* max cache time in jiffies */
+	unsigned int		si_rdblk;	/* deblk size */
+	unsigned int		si_rdhash;	/* hash size */
+
+	/*
+	 * If the number of whiteouts are larger than si_dirwh, leave all of
+	 * them after au_whtmp_ren to reduce the cost of rmdir(2).
+	 * future fsck.aufs or kernel thread will remove them later.
+	 * Otherwise, remove all whiteouts and the dir in rmdir(2).
+	 */
+	unsigned int		si_dirwh;
+
+	/* pseudo_link list */
+	struct hlist_bl_head	si_plink[AuPlink_NHASH];
+	wait_queue_head_t	si_plink_wq;
+	spinlock_t		si_plink_maint_lock;
+	pid_t			si_plink_maint_pid;
+
+	/* file list */
+	struct hlist_bl_head	si_files;
+
+	/* with/without getattr, brother of sb->s_d_op */
+	const struct inode_operations *si_iop_array;
+
+	/*
+	 * sysfs and lifetime management.
+	 * this is not a small structure and it may be a waste of memory in case
+	 * of sysfs is disabled, particularly when many aufs-es are mounted.
+	 * but using sysfs is majority.
+	 */
+	struct kobject		si_kobj;
+#ifdef CONFIG_DEBUG_FS
+	struct dentry		 *si_dbgaufs;
+	struct dentry		 *si_dbgaufs_plink;
+	struct dentry		 *si_dbgaufs_xib;
+#ifdef CONFIG_AUFS_EXPORT
+	struct dentry		 *si_dbgaufs_xigen;
+#endif
+#endif
+
+#ifdef CONFIG_AUFS_SBILIST
+	struct hlist_bl_node	si_list;
+#endif
+
+	/* dirty, necessary for unmounting, sysfs and sysrq */
+	struct super_block	*si_sb;
+};
+
+/* sbinfo status flags */
+/*
+ * set true when refresh_dirs() failed at remount time.
+ * then try refreshing dirs at access time again.
+ * if it is false, refreshing dirs at access time is unnecessary
+ */
+#define AuSi_FAILED_REFRESH_DIR	1
+#define AuSi_FHSM		(1 << 1)	/* fhsm is active now */
+#define AuSi_NO_DREVAL		(1 << 2)	/* disable all d_revalidate */
+
+#ifndef CONFIG_AUFS_FHSM
+#undef AuSi_FHSM
+#define AuSi_FHSM		0
+#endif
+
+static inline unsigned char au_do_ftest_si(struct au_sbinfo *sbi,
+					   unsigned int flag)
+{
+	AuRwMustAnyLock(&sbi->si_rwsem);
+	return sbi->au_si_status & flag;
+}
+#define au_ftest_si(sbinfo, name)	au_do_ftest_si(sbinfo, AuSi_##name)
+#define au_fset_si(sbinfo, name) do { \
+	AuRwMustWriteLock(&(sbinfo)->si_rwsem); \
+	(sbinfo)->au_si_status |= AuSi_##name; \
+} while (0)
+#define au_fclr_si(sbinfo, name) do { \
+	AuRwMustWriteLock(&(sbinfo)->si_rwsem); \
+	(sbinfo)->au_si_status &= ~AuSi_##name; \
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+
+/* policy to select one among writable branches */
+#define AuWbrCopyup(sbinfo, ...) \
+	((sbinfo)->si_wbr_copyup_ops->copyup(__VA_ARGS__))
+#define AuWbrCreate(sbinfo, ...) \
+	((sbinfo)->si_wbr_create_ops->create(__VA_ARGS__))
+
+/* flags for si_read_lock()/aufs_read_lock()/di_read_lock() */
+#define AuLock_DW		1		/* write-lock dentry */
+#define AuLock_IR		(1 << 1)	/* read-lock inode */
+#define AuLock_IW		(1 << 2)	/* write-lock inode */
+#define AuLock_FLUSH		(1 << 3)	/* wait for 'nowait' tasks */
+#define AuLock_DIRS		(1 << 4)	/* target is a pair of dirs */
+						/* except RENAME_EXCHANGE */
+#define AuLock_NOPLM		(1 << 5)	/* return err in plm mode */
+#define AuLock_NOPLMW		(1 << 6)	/* wait for plm mode ends */
+#define AuLock_GEN		(1 << 7)	/* test digen/iigen */
+#define au_ftest_lock(flags, name)	((flags) & AuLock_##name)
+#define au_fset_lock(flags, name) \
+	do { (flags) |= AuLock_##name; } while (0)
+#define au_fclr_lock(flags, name) \
+	do { (flags) &= ~AuLock_##name; } while (0)
+
+/* ---------------------------------------------------------------------- */
+
+/* super.c */
+struct inode *au_iget_locked(struct super_block *sb, ino_t ino);
+
+typedef unsigned long long (*au_arraycb_t)(struct super_block *sb, void *array,
+					   unsigned long long max, void *arg);
+void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb,
+		     struct super_block *sb, void *arg);
+struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max);
+void au_iarray_free(struct inode **a, unsigned long long max);
+
+void au_remount_refresh(struct super_block *sb, unsigned int do_idop);
+extern const struct super_operations aufs_sop;
+int au_alloc_root(struct super_block *sb);
+extern struct file_system_type aufs_fs_type;
+
+/* sbinfo.c */
+void au_si_free(struct kobject *kobj);
+struct au_sbinfo *au_si_alloc(struct super_block *sb);
+int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink);
+
+unsigned int au_sigen_inc(struct super_block *sb);
+aufs_bindex_t au_new_br_id(struct super_block *sb);
+
+int si_read_lock(struct super_block *sb, int flags);
+int si_write_lock(struct super_block *sb, int flags);
+int aufs_read_lock(struct dentry *dentry, int flags);
+void aufs_read_unlock(struct dentry *dentry, int flags);
+void aufs_write_lock(struct dentry *dentry);
+void aufs_write_unlock(struct dentry *dentry);
+int aufs_read_and_write_lock2(struct dentry *d1, struct dentry *d2, int flags);
+void aufs_read_and_write_unlock2(struct dentry *d1, struct dentry *d2);
+
+/* wbr_policy.c */
+extern struct au_wbr_copyup_operations au_wbr_copyup_ops[];
+extern struct au_wbr_create_operations au_wbr_create_ops[];
+int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst);
+int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex);
+int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop);
+
+/* mvdown.c */
+int au_mvdown(struct dentry *dentry, struct aufs_mvdown __user *arg);
+
+#ifdef CONFIG_AUFS_FHSM
+/* fhsm.c */
+
+static inline pid_t au_fhsm_pid(struct au_fhsm *fhsm)
+{
+	pid_t pid;
+
+	spin_lock(&fhsm->fhsm_spin);
+	pid = fhsm->fhsm_pid;
+	spin_unlock(&fhsm->fhsm_spin);
+
+	return pid;
+}
+
+void au_fhsm_wrote(struct super_block *sb, aufs_bindex_t bindex, int force);
+void au_fhsm_wrote_all(struct super_block *sb, int force);
+int au_fhsm_fd(struct super_block *sb, int oflags);
+int au_fhsm_br_alloc(struct au_branch *br);
+void au_fhsm_set_bottom(struct super_block *sb, aufs_bindex_t bindex);
+void au_fhsm_fin(struct super_block *sb);
+void au_fhsm_init(struct au_sbinfo *sbinfo);
+void au_fhsm_set(struct au_sbinfo *sbinfo, unsigned int sec);
+void au_fhsm_show(struct seq_file *seq, struct au_sbinfo *sbinfo);
+#else
+AuStubVoid(au_fhsm_wrote, struct super_block *sb, aufs_bindex_t bindex,
+	   int force)
+AuStubVoid(au_fhsm_wrote_all, struct super_block *sb, int force)
+AuStub(int, au_fhsm_fd, return -EOPNOTSUPP, struct super_block *sb, int oflags)
+AuStub(pid_t, au_fhsm_pid, return 0, struct au_fhsm *fhsm)
+AuStubInt0(au_fhsm_br_alloc, struct au_branch *br)
+AuStubVoid(au_fhsm_set_bottom, struct super_block *sb, aufs_bindex_t bindex)
+AuStubVoid(au_fhsm_fin, struct super_block *sb)
+AuStubVoid(au_fhsm_init, struct au_sbinfo *sbinfo)
+AuStubVoid(au_fhsm_set, struct au_sbinfo *sbinfo, unsigned int sec)
+AuStubVoid(au_fhsm_show, struct seq_file *seq, struct au_sbinfo *sbinfo)
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct au_sbinfo *au_sbi(struct super_block *sb)
+{
+	return sb->s_fs_info;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_EXPORT
+int au_test_nfsd(void);
+void au_export_init(struct super_block *sb);
+void au_xigen_inc(struct inode *inode);
+int au_xigen_new(struct inode *inode);
+int au_xigen_set(struct super_block *sb, struct path *path);
+void au_xigen_clr(struct super_block *sb);
+
+static inline int au_busy_or_stale(void)
+{
+	if (!au_test_nfsd())
+		return -EBUSY;
+	return -ESTALE;
+}
+#else
+AuStubInt0(au_test_nfsd, void)
+AuStubVoid(au_export_init, struct super_block *sb)
+AuStubVoid(au_xigen_inc, struct inode *inode)
+AuStubInt0(au_xigen_new, struct inode *inode)
+AuStubInt0(au_xigen_set, struct super_block *sb, struct path *path)
+AuStubVoid(au_xigen_clr, struct super_block *sb)
+AuStub(int, au_busy_or_stale, return -EBUSY, void)
+#endif /* CONFIG_AUFS_EXPORT */
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef CONFIG_AUFS_SBILIST
+/* module.c */
+extern struct hlist_bl_head au_sbilist;
+
+static inline void au_sbilist_init(void)
+{
+	INIT_HLIST_BL_HEAD(&au_sbilist);
+}
+
+static inline void au_sbilist_add(struct super_block *sb)
+{
+	au_hbl_add(&au_sbi(sb)->si_list, &au_sbilist);
+}
+
+static inline void au_sbilist_del(struct super_block *sb)
+{
+	au_hbl_del(&au_sbi(sb)->si_list, &au_sbilist);
+}
+
+#ifdef CONFIG_AUFS_MAGIC_SYSRQ
+static inline void au_sbilist_lock(void)
+{
+	hlist_bl_lock(&au_sbilist);
+}
+
+static inline void au_sbilist_unlock(void)
+{
+	hlist_bl_unlock(&au_sbilist);
+}
+#define AuGFP_SBILIST	GFP_ATOMIC
+#else
+AuStubVoid(au_sbilist_lock, void)
+AuStubVoid(au_sbilist_unlock, void)
+#define AuGFP_SBILIST	GFP_NOFS
+#endif /* CONFIG_AUFS_MAGIC_SYSRQ */
+#else
+AuStubVoid(au_sbilist_init, void)
+AuStubVoid(au_sbilist_add, struct super_block *sb)
+AuStubVoid(au_sbilist_del, struct super_block *sb)
+AuStubVoid(au_sbilist_lock, void)
+AuStubVoid(au_sbilist_unlock, void)
+#define AuGFP_SBILIST	GFP_NOFS
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static inline void dbgaufs_si_null(struct au_sbinfo *sbinfo)
+{
+	/*
+	 * This function is a dynamic '__init' function actually,
+	 * so the tiny check for si_rwsem is unnecessary.
+	 */
+	/* AuRwMustWriteLock(&sbinfo->si_rwsem); */
+#ifdef CONFIG_DEBUG_FS
+	sbinfo->si_dbgaufs = NULL;
+	sbinfo->si_dbgaufs_plink = NULL;
+	sbinfo->si_dbgaufs_xib = NULL;
+#ifdef CONFIG_AUFS_EXPORT
+	sbinfo->si_dbgaufs_xigen = NULL;
+#endif
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* current->atomic_flags */
+/* this value should never corrupt the ones defined in linux/sched.h */
+#define PFA_AUFS	0x10
+
+TASK_PFA_TEST(AUFS, test_aufs)	/* task_test_aufs */
+TASK_PFA_SET(AUFS, aufs)	/* task_set_aufs */
+TASK_PFA_CLEAR(AUFS, aufs)	/* task_clear_aufs */
+
+static inline int si_pid_test(struct super_block *sb)
+{
+	return !!task_test_aufs(current);
+}
+
+static inline void si_pid_clr(struct super_block *sb)
+{
+	AuDebugOn(!task_test_aufs(current));
+	task_clear_aufs(current);
+}
+
+static inline void si_pid_set(struct super_block *sb)
+{
+	AuDebugOn(task_test_aufs(current));
+	task_set_aufs(current);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* lock superblock. mainly for entry point functions */
+#define __si_read_lock(sb)	au_rw_read_lock(&au_sbi(sb)->si_rwsem)
+#define __si_write_lock(sb)	au_rw_write_lock(&au_sbi(sb)->si_rwsem)
+#define __si_read_trylock(sb)	au_rw_read_trylock(&au_sbi(sb)->si_rwsem)
+#define __si_write_trylock(sb)	au_rw_write_trylock(&au_sbi(sb)->si_rwsem)
+/*
+#define __si_read_trylock_nested(sb) \
+	au_rw_read_trylock_nested(&au_sbi(sb)->si_rwsem)
+#define __si_write_trylock_nested(sb) \
+	au_rw_write_trylock_nested(&au_sbi(sb)->si_rwsem)
+*/
+
+#define __si_read_unlock(sb)	au_rw_read_unlock(&au_sbi(sb)->si_rwsem)
+#define __si_write_unlock(sb)	au_rw_write_unlock(&au_sbi(sb)->si_rwsem)
+#define __si_downgrade_lock(sb)	au_rw_dgrade_lock(&au_sbi(sb)->si_rwsem)
+
+#define SiMustNoWaiters(sb)	AuRwMustNoWaiters(&au_sbi(sb)->si_rwsem)
+#define SiMustAnyLock(sb)	AuRwMustAnyLock(&au_sbi(sb)->si_rwsem)
+#define SiMustWriteLock(sb)	AuRwMustWriteLock(&au_sbi(sb)->si_rwsem)
+
+static inline void si_noflush_read_lock(struct super_block *sb)
+{
+	__si_read_lock(sb);
+	si_pid_set(sb);
+}
+
+static inline int si_noflush_read_trylock(struct super_block *sb)
+{
+	int locked;
+
+	locked = __si_read_trylock(sb);
+	if (locked)
+		si_pid_set(sb);
+	return locked;
+}
+
+static inline void si_noflush_write_lock(struct super_block *sb)
+{
+	__si_write_lock(sb);
+	si_pid_set(sb);
+}
+
+static inline int si_noflush_write_trylock(struct super_block *sb)
+{
+	int locked;
+
+	locked = __si_write_trylock(sb);
+	if (locked)
+		si_pid_set(sb);
+	return locked;
+}
+
+#if 0 /* reserved */
+static inline int si_read_trylock(struct super_block *sb, int flags)
+{
+	if (au_ftest_lock(flags, FLUSH))
+		au_nwt_flush(&au_sbi(sb)->si_nowait);
+	return si_noflush_read_trylock(sb);
+}
+#endif
+
+static inline void si_read_unlock(struct super_block *sb)
+{
+	si_pid_clr(sb);
+	__si_read_unlock(sb);
+}
+
+#if 0 /* reserved */
+static inline int si_write_trylock(struct super_block *sb, int flags)
+{
+	if (au_ftest_lock(flags, FLUSH))
+		au_nwt_flush(&au_sbi(sb)->si_nowait);
+	return si_noflush_write_trylock(sb);
+}
+#endif
+
+static inline void si_write_unlock(struct super_block *sb)
+{
+	si_pid_clr(sb);
+	__si_write_unlock(sb);
+}
+
+#if 0 /* reserved */
+static inline void si_downgrade_lock(struct super_block *sb)
+{
+	__si_downgrade_lock(sb);
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+static inline aufs_bindex_t au_sbbot(struct super_block *sb)
+{
+	SiMustAnyLock(sb);
+	return au_sbi(sb)->si_bbot;
+}
+
+static inline unsigned int au_mntflags(struct super_block *sb)
+{
+	SiMustAnyLock(sb);
+	return au_sbi(sb)->si_mntflags;
+}
+
+static inline unsigned int au_sigen(struct super_block *sb)
+{
+	SiMustAnyLock(sb);
+	return au_sbi(sb)->si_generation;
+}
+
+static inline struct au_branch *au_sbr(struct super_block *sb,
+				       aufs_bindex_t bindex)
+{
+	SiMustAnyLock(sb);
+	return au_sbi(sb)->si_branch[0 + bindex];
+}
+
+static inline loff_t au_xi_maxent(struct super_block *sb)
+{
+	SiMustAnyLock(sb);
+	return au_sbi(sb)->si_ximaxent;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_SUPER_H__ */
diff -Naur --no-dereference a/fs/aufs/sysaufs.c b/fs/aufs/sysaufs.c
--- a/fs/aufs/sysaufs.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/sysaufs.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sysfs interface and lifetime management
+ * they are necessary regardless sysfs is disabled.
+ */
+
+#include <linux/random.h>
+#include "aufs.h"
+
+unsigned long sysaufs_si_mask;
+struct kset *sysaufs_kset;
+
+#define AuSiAttr(_name) { \
+	.attr   = { .name = __stringify(_name), .mode = 0444 },	\
+	.show   = sysaufs_si_##_name,				\
+}
+
+static struct sysaufs_si_attr sysaufs_si_attr_xi_path = AuSiAttr(xi_path);
+struct attribute *sysaufs_si_attrs[] = {
+	&sysaufs_si_attr_xi_path.attr,
+	NULL,
+};
+
+static const struct sysfs_ops au_sbi_ops = {
+	.show   = sysaufs_si_show
+};
+
+static struct kobj_type au_sbi_ktype = {
+	.release	= au_si_free,
+	.sysfs_ops	= &au_sbi_ops,
+	.default_attrs	= sysaufs_si_attrs
+};
+
+/* ---------------------------------------------------------------------- */
+
+int sysaufs_si_init(struct au_sbinfo *sbinfo)
+{
+	int err;
+
+	sbinfo->si_kobj.kset = sysaufs_kset;
+	/* cf. sysaufs_name() */
+	err = kobject_init_and_add
+		(&sbinfo->si_kobj, &au_sbi_ktype, /*&sysaufs_kset->kobj*/NULL,
+		 SysaufsSiNamePrefix "%lx", sysaufs_si_id(sbinfo));
+
+	return err;
+}
+
+void sysaufs_fin(void)
+{
+	sysfs_remove_group(&sysaufs_kset->kobj, sysaufs_attr_group);
+	kset_unregister(sysaufs_kset);
+}
+
+int __init sysaufs_init(void)
+{
+	int err;
+
+	do {
+		get_random_bytes(&sysaufs_si_mask, sizeof(sysaufs_si_mask));
+	} while (!sysaufs_si_mask);
+
+	err = -EINVAL;
+	sysaufs_kset = kset_create_and_add(AUFS_NAME, NULL, fs_kobj);
+	if (unlikely(!sysaufs_kset))
+		goto out;
+	err = PTR_ERR(sysaufs_kset);
+	if (IS_ERR(sysaufs_kset))
+		goto out;
+	err = sysfs_create_group(&sysaufs_kset->kobj, sysaufs_attr_group);
+	if (unlikely(err))
+		kset_unregister(sysaufs_kset);
+
+out:
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/sysaufs.h b/fs/aufs/sysaufs.h
--- a/fs/aufs/sysaufs.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/sysaufs.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sysfs interface and mount lifetime management
+ */
+
+#ifndef __SYSAUFS_H__
+#define __SYSAUFS_H__
+
+#ifdef __KERNEL__
+
+#include <linux/sysfs.h>
+#include "module.h"
+
+struct super_block;
+struct au_sbinfo;
+
+struct sysaufs_si_attr {
+	struct attribute attr;
+	int (*show)(struct seq_file *seq, struct super_block *sb);
+};
+
+/* ---------------------------------------------------------------------- */
+
+/* sysaufs.c */
+extern unsigned long sysaufs_si_mask;
+extern struct kset *sysaufs_kset;
+extern struct attribute *sysaufs_si_attrs[];
+int sysaufs_si_init(struct au_sbinfo *sbinfo);
+int __init sysaufs_init(void);
+void sysaufs_fin(void);
+
+/* ---------------------------------------------------------------------- */
+
+/* some people doesn't like to show a pointer in kernel */
+static inline unsigned long sysaufs_si_id(struct au_sbinfo *sbinfo)
+{
+	return sysaufs_si_mask ^ (unsigned long)sbinfo;
+}
+
+#define SysaufsSiNamePrefix	"si_"
+#define SysaufsSiNameLen	(sizeof(SysaufsSiNamePrefix) + 16)
+static inline void sysaufs_name(struct au_sbinfo *sbinfo, char *name)
+{
+	snprintf(name, SysaufsSiNameLen, SysaufsSiNamePrefix "%lx",
+		 sysaufs_si_id(sbinfo));
+}
+
+struct au_branch;
+#ifdef CONFIG_SYSFS
+/* sysfs.c */
+extern struct attribute_group *sysaufs_attr_group;
+
+int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb);
+ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr,
+			 char *buf);
+long au_brinfo_ioctl(struct file *file, unsigned long arg);
+#ifdef CONFIG_COMPAT
+long au_brinfo_compat_ioctl(struct file *file, unsigned long arg);
+#endif
+
+void sysaufs_br_init(struct au_branch *br);
+void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex);
+void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex);
+
+#define sysaufs_brs_init()	do {} while (0)
+
+#else
+#define sysaufs_attr_group	NULL
+
+AuStubInt0(sysaufs_si_xi_path, struct seq_file *seq, struct super_block *sb)
+AuStub(ssize_t, sysaufs_si_show, return 0, struct kobject *kobj,
+       struct attribute *attr, char *buf)
+AuStubVoid(sysaufs_br_init, struct au_branch *br)
+AuStubVoid(sysaufs_brs_add, struct super_block *sb, aufs_bindex_t bindex)
+AuStubVoid(sysaufs_brs_del, struct super_block *sb, aufs_bindex_t bindex)
+
+static inline void sysaufs_brs_init(void)
+{
+	sysaufs_brs = 0;
+}
+
+#endif /* CONFIG_SYSFS */
+
+#endif /* __KERNEL__ */
+#endif /* __SYSAUFS_H__ */
diff -Naur --no-dereference a/fs/aufs/sysfs.c b/fs/aufs/sysfs.c
--- a/fs/aufs/sysfs.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/sysfs.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,374 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sysfs interface
+ */
+
+#include <linux/compat.h>
+#include <linux/seq_file.h>
+#include "aufs.h"
+
+#ifdef CONFIG_AUFS_FS_MODULE
+/* this entry violates the "one line per file" policy of sysfs */
+static ssize_t config_show(struct kobject *kobj, struct kobj_attribute *attr,
+			   char *buf)
+{
+	ssize_t err;
+	static char *conf =
+/* this file is generated at compiling */
+#include "conf.str"
+		;
+
+	err = snprintf(buf, PAGE_SIZE, conf);
+	if (unlikely(err >= PAGE_SIZE))
+		err = -EFBIG;
+	return err;
+}
+
+static struct kobj_attribute au_config_attr = __ATTR_RO(config);
+#endif
+
+static struct attribute *au_attr[] = {
+#ifdef CONFIG_AUFS_FS_MODULE
+	&au_config_attr.attr,
+#endif
+	NULL,	/* need to NULL terminate the list of attributes */
+};
+
+static struct attribute_group sysaufs_attr_group_body = {
+	.attrs = au_attr
+};
+
+struct attribute_group *sysaufs_attr_group = &sysaufs_attr_group_body;
+
+/* ---------------------------------------------------------------------- */
+
+int sysaufs_si_xi_path(struct seq_file *seq, struct super_block *sb)
+{
+	int err;
+
+	SiMustAnyLock(sb);
+
+	err = 0;
+	if (au_opt_test(au_mntflags(sb), XINO)) {
+		err = au_xino_path(seq, au_sbi(sb)->si_xib);
+		seq_putc(seq, '\n');
+	}
+	return err;
+}
+
+/*
+ * the lifetime of branch is independent from the entry under sysfs.
+ * sysfs handles the lifetime of the entry, and never call ->show() after it is
+ * unlinked.
+ */
+static int sysaufs_si_br(struct seq_file *seq, struct super_block *sb,
+			 aufs_bindex_t bindex, int idx)
+{
+	int err;
+	struct path path;
+	struct dentry *root;
+	struct au_branch *br;
+	au_br_perm_str_t perm;
+
+	AuDbg("b%d\n", bindex);
+
+	err = 0;
+	root = sb->s_root;
+	di_read_lock_parent(root, !AuLock_IR);
+	br = au_sbr(sb, bindex);
+
+	switch (idx) {
+	case AuBrSysfs_BR:
+		path.mnt = au_br_mnt(br);
+		path.dentry = au_h_dptr(root, bindex);
+		err = au_seq_path(seq, &path);
+		if (!err) {
+			au_optstr_br_perm(&perm, br->br_perm);
+			seq_printf(seq, "=%s\n", perm.a);
+		}
+		break;
+	case AuBrSysfs_BRID:
+		seq_printf(seq, "%d\n", br->br_id);
+		break;
+	}
+	di_read_unlock(root, !AuLock_IR);
+	if (unlikely(err || seq_has_overflowed(seq)))
+		err = -E2BIG;
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static struct seq_file *au_seq(char *p, ssize_t len)
+{
+	struct seq_file *seq;
+
+	seq = kzalloc(sizeof(*seq), GFP_NOFS);
+	if (seq) {
+		/* mutex_init(&seq.lock); */
+		seq->buf = p;
+		seq->size = len;
+		return seq; /* success */
+	}
+
+	seq = ERR_PTR(-ENOMEM);
+	return seq;
+}
+
+#define SysaufsBr_PREFIX	"br"
+#define SysaufsBrid_PREFIX	"brid"
+
+/* todo: file size may exceed PAGE_SIZE */
+ssize_t sysaufs_si_show(struct kobject *kobj, struct attribute *attr,
+			char *buf)
+{
+	ssize_t err;
+	int idx;
+	long l;
+	aufs_bindex_t bbot;
+	struct au_sbinfo *sbinfo;
+	struct super_block *sb;
+	struct seq_file *seq;
+	char *name;
+	struct attribute **cattr;
+
+	sbinfo = container_of(kobj, struct au_sbinfo, si_kobj);
+	sb = sbinfo->si_sb;
+
+	/*
+	 * prevent a race condition between sysfs and aufs.
+	 * for instance, sysfs_file_read() calls sysfs_get_active_two() which
+	 * prohibits maintaining the sysfs entries.
+	 * hew we acquire read lock after sysfs_get_active_two().
+	 * on the other hand, the remount process may maintain the sysfs/aufs
+	 * entries after acquiring write lock.
+	 * it can cause a deadlock.
+	 * simply we gave up processing read here.
+	 */
+	err = -EBUSY;
+	if (unlikely(!si_noflush_read_trylock(sb)))
+		goto out;
+
+	seq = au_seq(buf, PAGE_SIZE);
+	err = PTR_ERR(seq);
+	if (IS_ERR(seq))
+		goto out_unlock;
+
+	name = (void *)attr->name;
+	cattr = sysaufs_si_attrs;
+	while (*cattr) {
+		if (!strcmp(name, (*cattr)->name)) {
+			err = container_of(*cattr, struct sysaufs_si_attr, attr)
+				->show(seq, sb);
+			goto out_seq;
+		}
+		cattr++;
+	}
+
+	if (!strncmp(name, SysaufsBrid_PREFIX,
+		     sizeof(SysaufsBrid_PREFIX) - 1)) {
+		idx = AuBrSysfs_BRID;
+		name += sizeof(SysaufsBrid_PREFIX) - 1;
+	} else if (!strncmp(name, SysaufsBr_PREFIX,
+			    sizeof(SysaufsBr_PREFIX) - 1)) {
+		idx = AuBrSysfs_BR;
+		name += sizeof(SysaufsBr_PREFIX) - 1;
+	} else
+		  BUG();
+
+	err = kstrtol(name, 10, &l);
+	if (!err) {
+		bbot = au_sbbot(sb);
+		if (l <= bbot)
+			err = sysaufs_si_br(seq, sb, (aufs_bindex_t)l, idx);
+		else
+			err = -ENOENT;
+	}
+
+out_seq:
+	if (!err) {
+		err = seq->count;
+		/* sysfs limit */
+		if (unlikely(err == PAGE_SIZE))
+			err = -EFBIG;
+	}
+	au_kfree_rcu(seq);
+out_unlock:
+	si_read_unlock(sb);
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_brinfo(struct super_block *sb, union aufs_brinfo __user *arg)
+{
+	int err;
+	int16_t brid;
+	aufs_bindex_t bindex, bbot;
+	size_t sz;
+	char *buf;
+	struct seq_file *seq;
+	struct au_branch *br;
+
+	si_read_lock(sb, AuLock_FLUSH);
+	bbot = au_sbbot(sb);
+	err = bbot + 1;
+	if (!arg)
+		goto out;
+
+	err = -ENOMEM;
+	buf = (void *)__get_free_page(GFP_NOFS);
+	if (unlikely(!buf))
+		goto out;
+
+	seq = au_seq(buf, PAGE_SIZE);
+	err = PTR_ERR(seq);
+	if (IS_ERR(seq))
+		goto out_buf;
+
+	sz = sizeof(*arg) - offsetof(union aufs_brinfo, path);
+	for (bindex = 0; bindex <= bbot; bindex++, arg++) {
+		/* VERIFY_WRITE */
+		err = !access_ok(arg, sizeof(*arg));
+		if (unlikely(err))
+			break;
+
+		br = au_sbr(sb, bindex);
+		brid = br->br_id;
+		BUILD_BUG_ON(sizeof(brid) != sizeof(arg->id));
+		err = __put_user(brid, &arg->id);
+		if (unlikely(err))
+			break;
+
+		BUILD_BUG_ON(sizeof(br->br_perm) != sizeof(arg->perm));
+		err = __put_user(br->br_perm, &arg->perm);
+		if (unlikely(err))
+			break;
+
+		err = au_seq_path(seq, &br->br_path);
+		if (unlikely(err))
+			break;
+		seq_putc(seq, '\0');
+		if (!seq_has_overflowed(seq)) {
+			err = copy_to_user(arg->path, seq->buf, seq->count);
+			seq->count = 0;
+			if (unlikely(err))
+				break;
+		} else {
+			err = -E2BIG;
+			goto out_seq;
+		}
+	}
+	if (unlikely(err))
+		err = -EFAULT;
+
+out_seq:
+	au_kfree_rcu(seq);
+out_buf:
+	free_page((unsigned long)buf);
+out:
+	si_read_unlock(sb);
+	return err;
+}
+
+long au_brinfo_ioctl(struct file *file, unsigned long arg)
+{
+	return au_brinfo(file->f_path.dentry->d_sb, (void __user *)arg);
+}
+
+#ifdef CONFIG_COMPAT
+long au_brinfo_compat_ioctl(struct file *file, unsigned long arg)
+{
+	return au_brinfo(file->f_path.dentry->d_sb, compat_ptr(arg));
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+void sysaufs_br_init(struct au_branch *br)
+{
+	int i;
+	struct au_brsysfs *br_sysfs;
+	struct attribute *attr;
+
+	br_sysfs = br->br_sysfs;
+	for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
+		attr = &br_sysfs->attr;
+		sysfs_attr_init(attr);
+		attr->name = br_sysfs->name;
+		attr->mode = 0444;
+		br_sysfs++;
+	}
+}
+
+void sysaufs_brs_del(struct super_block *sb, aufs_bindex_t bindex)
+{
+	struct au_branch *br;
+	struct kobject *kobj;
+	struct au_brsysfs *br_sysfs;
+	int i;
+	aufs_bindex_t bbot;
+
+	if (!sysaufs_brs)
+		return;
+
+	kobj = &au_sbi(sb)->si_kobj;
+	bbot = au_sbbot(sb);
+	for (; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		br_sysfs = br->br_sysfs;
+		for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
+			sysfs_remove_file(kobj, &br_sysfs->attr);
+			br_sysfs++;
+		}
+	}
+}
+
+void sysaufs_brs_add(struct super_block *sb, aufs_bindex_t bindex)
+{
+	int err, i;
+	aufs_bindex_t bbot;
+	struct kobject *kobj;
+	struct au_branch *br;
+	struct au_brsysfs *br_sysfs;
+
+	if (!sysaufs_brs)
+		return;
+
+	kobj = &au_sbi(sb)->si_kobj;
+	bbot = au_sbbot(sb);
+	for (; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		br_sysfs = br->br_sysfs;
+		snprintf(br_sysfs[AuBrSysfs_BR].name, sizeof(br_sysfs->name),
+			 SysaufsBr_PREFIX "%d", bindex);
+		snprintf(br_sysfs[AuBrSysfs_BRID].name, sizeof(br_sysfs->name),
+			 SysaufsBrid_PREFIX "%d", bindex);
+		for (i = 0; i < ARRAY_SIZE(br->br_sysfs); i++) {
+			err = sysfs_create_file(kobj, &br_sysfs->attr);
+			if (unlikely(err))
+				pr_warn("failed %s under sysfs(%d)\n",
+					br_sysfs->name, err);
+			br_sysfs++;
+		}
+	}
+}
diff -Naur --no-dereference a/fs/aufs/sysrq.c b/fs/aufs/sysrq.c
--- a/fs/aufs/sysrq.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/sysrq.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * magic sysrq handler
+ */
+
+/* #include <linux/sysrq.h> */
+#include <linux/writeback.h>
+#include "aufs.h"
+
+/* ---------------------------------------------------------------------- */
+
+static void sysrq_sb(struct super_block *sb)
+{
+	char *plevel;
+	struct au_sbinfo *sbinfo;
+	struct file *file;
+	struct hlist_bl_head *files;
+	struct hlist_bl_node *pos;
+	struct au_finfo *finfo;
+	struct inode *i;
+
+	plevel = au_plevel;
+	au_plevel = KERN_WARNING;
+
+	/* since we define pr_fmt, call printk directly */
+#define pr(str) printk(KERN_WARNING AUFS_NAME ": " str)
+
+	sbinfo = au_sbi(sb);
+	printk(KERN_WARNING "si=%lx\n", sysaufs_si_id(sbinfo));
+	pr("superblock\n");
+	au_dpri_sb(sb);
+
+#if 0 /* reserved */
+	do {
+		int err, i, j, ndentry;
+		struct au_dcsub_pages dpages;
+		struct au_dpage *dpage;
+
+		err = au_dpages_init(&dpages, GFP_ATOMIC);
+		if (unlikely(err))
+			break;
+		err = au_dcsub_pages(&dpages, sb->s_root, NULL, NULL);
+		if (!err)
+			for (i = 0; i < dpages.ndpage; i++) {
+				dpage = dpages.dpages + i;
+				ndentry = dpage->ndentry;
+				for (j = 0; j < ndentry; j++)
+					au_dpri_dentry(dpage->dentries[j]);
+			}
+		au_dpages_free(&dpages);
+	} while (0);
+#endif
+
+	pr("isolated inode\n");
+	spin_lock(&sb->s_inode_list_lock);
+	list_for_each_entry(i, &sb->s_inodes, i_sb_list) {
+		spin_lock(&i->i_lock);
+		if (hlist_empty(&i->i_dentry))
+			au_dpri_inode(i);
+		spin_unlock(&i->i_lock);
+	}
+	spin_unlock(&sb->s_inode_list_lock);
+
+	pr("files\n");
+	files = &au_sbi(sb)->si_files;
+	hlist_bl_lock(files);
+	hlist_bl_for_each_entry(finfo, pos, files, fi_hlist) {
+		umode_t mode;
+
+		file = finfo->fi_file;
+		mode = file_inode(file)->i_mode;
+		if (!special_file(mode))
+			au_dpri_file(file);
+	}
+	hlist_bl_unlock(files);
+	pr("done\n");
+
+#undef pr
+	au_plevel = plevel;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* module parameter */
+static char *aufs_sysrq_key = "a";
+module_param_named(sysrq, aufs_sysrq_key, charp, 0444);
+MODULE_PARM_DESC(sysrq, "MagicSysRq key for " AUFS_NAME);
+
+static void au_sysrq(int key __maybe_unused)
+{
+	struct au_sbinfo *sbinfo;
+	struct hlist_bl_node *pos;
+
+	lockdep_off();
+	au_sbilist_lock();
+	hlist_bl_for_each_entry(sbinfo, pos, &au_sbilist, si_list)
+		sysrq_sb(sbinfo->si_sb);
+	au_sbilist_unlock();
+	lockdep_on();
+}
+
+static struct sysrq_key_op au_sysrq_op = {
+	.handler	= au_sysrq,
+	.help_msg	= "Aufs",
+	.action_msg	= "Aufs",
+	.enable_mask	= SYSRQ_ENABLE_DUMP
+};
+
+/* ---------------------------------------------------------------------- */
+
+int __init au_sysrq_init(void)
+{
+	int err;
+	char key;
+
+	err = -1;
+	key = *aufs_sysrq_key;
+	if ('a' <= key && key <= 'z')
+		err = register_sysrq_key(key, &au_sysrq_op);
+	if (unlikely(err))
+		pr_err("err %d, sysrq=%c\n", err, key);
+	return err;
+}
+
+void au_sysrq_fin(void)
+{
+	int err;
+
+	err = unregister_sysrq_key(*aufs_sysrq_key, &au_sysrq_op);
+	if (unlikely(err))
+		pr_err("err %d (ignored)\n", err);
+}
diff -Naur --no-dereference a/fs/aufs/vdir.c b/fs/aufs/vdir.c
--- a/fs/aufs/vdir.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/vdir.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,896 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * virtual or vertical directory
+ */
+
+#include <linux/iversion.h>
+#include "aufs.h"
+
+static unsigned int calc_size(int nlen)
+{
+	return ALIGN(sizeof(struct au_vdir_de) + nlen, sizeof(ino_t));
+}
+
+static int set_deblk_end(union au_vdir_deblk_p *p,
+			 union au_vdir_deblk_p *deblk_end)
+{
+	if (calc_size(0) <= deblk_end->deblk - p->deblk) {
+		p->de->de_str.len = 0;
+		/* smp_mb(); */
+		return 0;
+	}
+	return -1; /* error */
+}
+
+/* returns true or false */
+static int is_deblk_end(union au_vdir_deblk_p *p,
+			union au_vdir_deblk_p *deblk_end)
+{
+	if (calc_size(0) <= deblk_end->deblk - p->deblk)
+		return !p->de->de_str.len;
+	return 1;
+}
+
+static unsigned char *last_deblk(struct au_vdir *vdir)
+{
+	return vdir->vd_deblk[vdir->vd_nblk - 1];
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* estimate the appropriate size for name hash table */
+unsigned int au_rdhash_est(loff_t sz)
+{
+	unsigned int n;
+
+	n = UINT_MAX;
+	sz >>= 10;
+	if (sz < n)
+		n = sz;
+	if (sz < AUFS_RDHASH_DEF)
+		n = AUFS_RDHASH_DEF;
+	/* pr_info("n %u\n", n); */
+	return n;
+}
+
+/*
+ * the allocated memory has to be freed by
+ * au_nhash_wh_free() or au_nhash_de_free().
+ */
+int au_nhash_alloc(struct au_nhash *nhash, unsigned int num_hash, gfp_t gfp)
+{
+	struct hlist_head *head;
+	unsigned int u;
+	size_t sz;
+
+	sz = sizeof(*nhash->nh_head) * num_hash;
+	head = kmalloc(sz, gfp);
+	if (head) {
+		nhash->nh_num = num_hash;
+		nhash->nh_head = head;
+		for (u = 0; u < num_hash; u++)
+			INIT_HLIST_HEAD(head++);
+		return 0; /* success */
+	}
+
+	return -ENOMEM;
+}
+
+static void nhash_count(struct hlist_head *head)
+{
+#if 0 /* debugging */
+	unsigned long n;
+	struct hlist_node *pos;
+
+	n = 0;
+	hlist_for_each(pos, head)
+		n++;
+	pr_info("%lu\n", n);
+#endif
+}
+
+static void au_nhash_wh_do_free(struct hlist_head *head)
+{
+	struct au_vdir_wh *pos;
+	struct hlist_node *node;
+
+	hlist_for_each_entry_safe(pos, node, head, wh_hash)
+		au_kfree_rcu(pos);
+}
+
+static void au_nhash_de_do_free(struct hlist_head *head)
+{
+	struct au_vdir_dehstr *pos;
+	struct hlist_node *node;
+
+	hlist_for_each_entry_safe(pos, node, head, hash)
+		au_cache_free_vdir_dehstr(pos);
+}
+
+static void au_nhash_do_free(struct au_nhash *nhash,
+			     void (*free)(struct hlist_head *head))
+{
+	unsigned int n;
+	struct hlist_head *head;
+
+	n = nhash->nh_num;
+	if (!n)
+		return;
+
+	head = nhash->nh_head;
+	while (n-- > 0) {
+		nhash_count(head);
+		free(head++);
+	}
+	au_kfree_try_rcu(nhash->nh_head);
+}
+
+void au_nhash_wh_free(struct au_nhash *whlist)
+{
+	au_nhash_do_free(whlist, au_nhash_wh_do_free);
+}
+
+static void au_nhash_de_free(struct au_nhash *delist)
+{
+	au_nhash_do_free(delist, au_nhash_de_do_free);
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_nhash_test_longer_wh(struct au_nhash *whlist, aufs_bindex_t btgt,
+			    int limit)
+{
+	int num;
+	unsigned int u, n;
+	struct hlist_head *head;
+	struct au_vdir_wh *pos;
+
+	num = 0;
+	n = whlist->nh_num;
+	head = whlist->nh_head;
+	for (u = 0; u < n; u++, head++)
+		hlist_for_each_entry(pos, head, wh_hash)
+			if (pos->wh_bindex == btgt && ++num > limit)
+				return 1;
+	return 0;
+}
+
+static struct hlist_head *au_name_hash(struct au_nhash *nhash,
+				       unsigned char *name,
+				       unsigned int len)
+{
+	unsigned int v;
+	/* const unsigned int magic_bit = 12; */
+
+	AuDebugOn(!nhash->nh_num || !nhash->nh_head);
+
+	v = 0;
+	if (len > 8)
+		len = 8;
+	while (len--)
+		v += *name++;
+	/* v = hash_long(v, magic_bit); */
+	v %= nhash->nh_num;
+	return nhash->nh_head + v;
+}
+
+static int au_nhash_test_name(struct au_vdir_destr *str, const char *name,
+			      int nlen)
+{
+	return str->len == nlen && !memcmp(str->name, name, nlen);
+}
+
+/* returns found or not */
+int au_nhash_test_known_wh(struct au_nhash *whlist, char *name, int nlen)
+{
+	struct hlist_head *head;
+	struct au_vdir_wh *pos;
+	struct au_vdir_destr *str;
+
+	head = au_name_hash(whlist, name, nlen);
+	hlist_for_each_entry(pos, head, wh_hash) {
+		str = &pos->wh_str;
+		AuDbg("%.*s\n", str->len, str->name);
+		if (au_nhash_test_name(str, name, nlen))
+			return 1;
+	}
+	return 0;
+}
+
+/* returns found(true) or not */
+static int test_known(struct au_nhash *delist, char *name, int nlen)
+{
+	struct hlist_head *head;
+	struct au_vdir_dehstr *pos;
+	struct au_vdir_destr *str;
+
+	head = au_name_hash(delist, name, nlen);
+	hlist_for_each_entry(pos, head, hash) {
+		str = pos->str;
+		AuDbg("%.*s\n", str->len, str->name);
+		if (au_nhash_test_name(str, name, nlen))
+			return 1;
+	}
+	return 0;
+}
+
+static void au_shwh_init_wh(struct au_vdir_wh *wh, ino_t ino,
+			    unsigned char d_type)
+{
+#ifdef CONFIG_AUFS_SHWH
+	wh->wh_ino = ino;
+	wh->wh_type = d_type;
+#endif
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_nhash_append_wh(struct au_nhash *whlist, char *name, int nlen, ino_t ino,
+		       unsigned int d_type, aufs_bindex_t bindex,
+		       unsigned char shwh)
+{
+	int err;
+	struct au_vdir_destr *str;
+	struct au_vdir_wh *wh;
+
+	AuDbg("%.*s\n", nlen, name);
+	AuDebugOn(!whlist->nh_num || !whlist->nh_head);
+
+	err = -ENOMEM;
+	wh = kmalloc(sizeof(*wh) + nlen, GFP_NOFS);
+	if (unlikely(!wh))
+		goto out;
+
+	err = 0;
+	wh->wh_bindex = bindex;
+	if (shwh)
+		au_shwh_init_wh(wh, ino, d_type);
+	str = &wh->wh_str;
+	str->len = nlen;
+	memcpy(str->name, name, nlen);
+	hlist_add_head(&wh->wh_hash, au_name_hash(whlist, name, nlen));
+	/* smp_mb(); */
+
+out:
+	return err;
+}
+
+static int append_deblk(struct au_vdir *vdir)
+{
+	int err;
+	unsigned long ul;
+	const unsigned int deblk_sz = vdir->vd_deblk_sz;
+	union au_vdir_deblk_p p, deblk_end;
+	unsigned char **o;
+
+	err = -ENOMEM;
+	o = au_krealloc(vdir->vd_deblk, sizeof(*o) * (vdir->vd_nblk + 1),
+			GFP_NOFS, /*may_shrink*/0);
+	if (unlikely(!o))
+		goto out;
+
+	vdir->vd_deblk = o;
+	p.deblk = kmalloc(deblk_sz, GFP_NOFS);
+	if (p.deblk) {
+		ul = vdir->vd_nblk++;
+		vdir->vd_deblk[ul] = p.deblk;
+		vdir->vd_last.ul = ul;
+		vdir->vd_last.p.deblk = p.deblk;
+		deblk_end.deblk = p.deblk + deblk_sz;
+		err = set_deblk_end(&p, &deblk_end);
+	}
+
+out:
+	return err;
+}
+
+static int append_de(struct au_vdir *vdir, char *name, int nlen, ino_t ino,
+		     unsigned int d_type, struct au_nhash *delist)
+{
+	int err;
+	unsigned int sz;
+	const unsigned int deblk_sz = vdir->vd_deblk_sz;
+	union au_vdir_deblk_p p, *room, deblk_end;
+	struct au_vdir_dehstr *dehstr;
+
+	p.deblk = last_deblk(vdir);
+	deblk_end.deblk = p.deblk + deblk_sz;
+	room = &vdir->vd_last.p;
+	AuDebugOn(room->deblk < p.deblk || deblk_end.deblk <= room->deblk
+		  || !is_deblk_end(room, &deblk_end));
+
+	sz = calc_size(nlen);
+	if (unlikely(sz > deblk_end.deblk - room->deblk)) {
+		err = append_deblk(vdir);
+		if (unlikely(err))
+			goto out;
+
+		p.deblk = last_deblk(vdir);
+		deblk_end.deblk = p.deblk + deblk_sz;
+		/* smp_mb(); */
+		AuDebugOn(room->deblk != p.deblk);
+	}
+
+	err = -ENOMEM;
+	dehstr = au_cache_alloc_vdir_dehstr();
+	if (unlikely(!dehstr))
+		goto out;
+
+	dehstr->str = &room->de->de_str;
+	hlist_add_head(&dehstr->hash, au_name_hash(delist, name, nlen));
+	room->de->de_ino = ino;
+	room->de->de_type = d_type;
+	room->de->de_str.len = nlen;
+	memcpy(room->de->de_str.name, name, nlen);
+
+	err = 0;
+	room->deblk += sz;
+	if (unlikely(set_deblk_end(room, &deblk_end)))
+		err = append_deblk(vdir);
+	/* smp_mb(); */
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_vdir_free(struct au_vdir *vdir)
+{
+	unsigned char **deblk;
+
+	deblk = vdir->vd_deblk;
+	while (vdir->vd_nblk--)
+		au_kfree_try_rcu(*deblk++);
+	au_kfree_try_rcu(vdir->vd_deblk);
+	au_cache_free_vdir(vdir);
+}
+
+static struct au_vdir *alloc_vdir(struct file *file)
+{
+	struct au_vdir *vdir;
+	struct super_block *sb;
+	int err;
+
+	sb = file->f_path.dentry->d_sb;
+	SiMustAnyLock(sb);
+
+	err = -ENOMEM;
+	vdir = au_cache_alloc_vdir();
+	if (unlikely(!vdir))
+		goto out;
+
+	vdir->vd_deblk = kzalloc(sizeof(*vdir->vd_deblk), GFP_NOFS);
+	if (unlikely(!vdir->vd_deblk))
+		goto out_free;
+
+	vdir->vd_deblk_sz = au_sbi(sb)->si_rdblk;
+	if (!vdir->vd_deblk_sz) {
+		/* estimate the appropriate size for deblk */
+		vdir->vd_deblk_sz = au_dir_size(file, /*dentry*/NULL);
+		/* pr_info("vd_deblk_sz %u\n", vdir->vd_deblk_sz); */
+	}
+	vdir->vd_nblk = 0;
+	vdir->vd_version = 0;
+	vdir->vd_jiffy = 0;
+	err = append_deblk(vdir);
+	if (!err)
+		return vdir; /* success */
+
+	au_kfree_try_rcu(vdir->vd_deblk);
+
+out_free:
+	au_cache_free_vdir(vdir);
+out:
+	vdir = ERR_PTR(err);
+	return vdir;
+}
+
+static int reinit_vdir(struct au_vdir *vdir)
+{
+	int err;
+	union au_vdir_deblk_p p, deblk_end;
+
+	while (vdir->vd_nblk > 1) {
+		au_kfree_try_rcu(vdir->vd_deblk[vdir->vd_nblk - 1]);
+		/* vdir->vd_deblk[vdir->vd_nblk - 1] = NULL; */
+		vdir->vd_nblk--;
+	}
+	p.deblk = vdir->vd_deblk[0];
+	deblk_end.deblk = p.deblk + vdir->vd_deblk_sz;
+	err = set_deblk_end(&p, &deblk_end);
+	/* keep vd_dblk_sz */
+	vdir->vd_last.ul = 0;
+	vdir->vd_last.p.deblk = vdir->vd_deblk[0];
+	vdir->vd_version = 0;
+	vdir->vd_jiffy = 0;
+	/* smp_mb(); */
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+#define AuFillVdir_CALLED	1
+#define AuFillVdir_WHABLE	(1 << 1)
+#define AuFillVdir_SHWH		(1 << 2)
+#define au_ftest_fillvdir(flags, name)	((flags) & AuFillVdir_##name)
+#define au_fset_fillvdir(flags, name) \
+	do { (flags) |= AuFillVdir_##name; } while (0)
+#define au_fclr_fillvdir(flags, name) \
+	do { (flags) &= ~AuFillVdir_##name; } while (0)
+
+#ifndef CONFIG_AUFS_SHWH
+#undef AuFillVdir_SHWH
+#define AuFillVdir_SHWH		0
+#endif
+
+struct fillvdir_arg {
+	struct dir_context	ctx;
+	struct file		*file;
+	struct au_vdir		*vdir;
+	struct au_nhash		delist;
+	struct au_nhash		whlist;
+	aufs_bindex_t		bindex;
+	unsigned int		flags;
+	int			err;
+};
+
+static int fillvdir(struct dir_context *ctx, const char *__name, int nlen,
+		    loff_t offset __maybe_unused, u64 h_ino,
+		    unsigned int d_type)
+{
+	struct fillvdir_arg *arg = container_of(ctx, struct fillvdir_arg, ctx);
+	char *name = (void *)__name;
+	struct super_block *sb;
+	ino_t ino;
+	const unsigned char shwh = !!au_ftest_fillvdir(arg->flags, SHWH);
+
+	arg->err = 0;
+	sb = arg->file->f_path.dentry->d_sb;
+	au_fset_fillvdir(arg->flags, CALLED);
+	/* smp_mb(); */
+	if (nlen <= AUFS_WH_PFX_LEN
+	    || memcmp(name, AUFS_WH_PFX, AUFS_WH_PFX_LEN)) {
+		if (test_known(&arg->delist, name, nlen)
+		    || au_nhash_test_known_wh(&arg->whlist, name, nlen))
+			goto out; /* already exists or whiteouted */
+
+		arg->err = au_ino(sb, arg->bindex, h_ino, d_type, &ino);
+		if (!arg->err) {
+			if (unlikely(nlen > AUFS_MAX_NAMELEN))
+				d_type = DT_UNKNOWN;
+			arg->err = append_de(arg->vdir, name, nlen, ino,
+					     d_type, &arg->delist);
+		}
+	} else if (au_ftest_fillvdir(arg->flags, WHABLE)) {
+		name += AUFS_WH_PFX_LEN;
+		nlen -= AUFS_WH_PFX_LEN;
+		if (au_nhash_test_known_wh(&arg->whlist, name, nlen))
+			goto out; /* already whiteouted */
+
+		ino = 0; /* just to suppress a warning */
+		if (shwh)
+			arg->err = au_wh_ino(sb, arg->bindex, h_ino, d_type,
+					     &ino);
+		if (!arg->err) {
+			if (nlen <= AUFS_MAX_NAMELEN + AUFS_WH_PFX_LEN)
+				d_type = DT_UNKNOWN;
+			arg->err = au_nhash_append_wh
+				(&arg->whlist, name, nlen, ino, d_type,
+				 arg->bindex, shwh);
+		}
+	}
+
+out:
+	if (!arg->err)
+		arg->vdir->vd_jiffy = jiffies;
+	/* smp_mb(); */
+	AuTraceErr(arg->err);
+	return arg->err;
+}
+
+static int au_handle_shwh(struct super_block *sb, struct au_vdir *vdir,
+			  struct au_nhash *whlist, struct au_nhash *delist)
+{
+#ifdef CONFIG_AUFS_SHWH
+	int err;
+	unsigned int nh, u;
+	struct hlist_head *head;
+	struct au_vdir_wh *pos;
+	struct hlist_node *n;
+	char *p, *o;
+	struct au_vdir_destr *destr;
+
+	AuDebugOn(!au_opt_test(au_mntflags(sb), SHWH));
+
+	err = -ENOMEM;
+	o = p = (void *)__get_free_page(GFP_NOFS);
+	if (unlikely(!p))
+		goto out;
+
+	err = 0;
+	nh = whlist->nh_num;
+	memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
+	p += AUFS_WH_PFX_LEN;
+	for (u = 0; u < nh; u++) {
+		head = whlist->nh_head + u;
+		hlist_for_each_entry_safe(pos, n, head, wh_hash) {
+			destr = &pos->wh_str;
+			memcpy(p, destr->name, destr->len);
+			err = append_de(vdir, o, destr->len + AUFS_WH_PFX_LEN,
+					pos->wh_ino, pos->wh_type, delist);
+			if (unlikely(err))
+				break;
+		}
+	}
+
+	free_page((unsigned long)o);
+
+out:
+	AuTraceErr(err);
+	return err;
+#else
+	return 0;
+#endif
+}
+
+static int au_do_read_vdir(struct fillvdir_arg *arg)
+{
+	int err;
+	unsigned int rdhash;
+	loff_t offset;
+	aufs_bindex_t bbot, bindex, btop;
+	unsigned char shwh;
+	struct file *hf, *file;
+	struct super_block *sb;
+
+	file = arg->file;
+	sb = file->f_path.dentry->d_sb;
+	SiMustAnyLock(sb);
+
+	rdhash = au_sbi(sb)->si_rdhash;
+	if (!rdhash)
+		rdhash = au_rdhash_est(au_dir_size(file, /*dentry*/NULL));
+	err = au_nhash_alloc(&arg->delist, rdhash, GFP_NOFS);
+	if (unlikely(err))
+		goto out;
+	err = au_nhash_alloc(&arg->whlist, rdhash, GFP_NOFS);
+	if (unlikely(err))
+		goto out_delist;
+
+	err = 0;
+	arg->flags = 0;
+	shwh = 0;
+	if (au_opt_test(au_mntflags(sb), SHWH)) {
+		shwh = 1;
+		au_fset_fillvdir(arg->flags, SHWH);
+	}
+	btop = au_fbtop(file);
+	bbot = au_fbbot_dir(file);
+	for (bindex = btop; !err && bindex <= bbot; bindex++) {
+		hf = au_hf_dir(file, bindex);
+		if (!hf)
+			continue;
+
+		offset = vfsub_llseek(hf, 0, SEEK_SET);
+		err = offset;
+		if (unlikely(offset))
+			break;
+
+		arg->bindex = bindex;
+		au_fclr_fillvdir(arg->flags, WHABLE);
+		if (shwh
+		    || (bindex != bbot
+			&& au_br_whable(au_sbr_perm(sb, bindex))))
+			au_fset_fillvdir(arg->flags, WHABLE);
+		do {
+			arg->err = 0;
+			au_fclr_fillvdir(arg->flags, CALLED);
+			/* smp_mb(); */
+			err = vfsub_iterate_dir(hf, &arg->ctx);
+			if (err >= 0)
+				err = arg->err;
+		} while (!err && au_ftest_fillvdir(arg->flags, CALLED));
+
+		/*
+		 * dir_relax() may be good for concurrency, but aufs should not
+		 * use it since it will cause a lockdep problem.
+		 */
+	}
+
+	if (!err && shwh)
+		err = au_handle_shwh(sb, arg->vdir, &arg->whlist, &arg->delist);
+
+	au_nhash_wh_free(&arg->whlist);
+
+out_delist:
+	au_nhash_de_free(&arg->delist);
+out:
+	return err;
+}
+
+static int read_vdir(struct file *file, int may_read)
+{
+	int err;
+	unsigned long expire;
+	unsigned char do_read;
+	struct fillvdir_arg arg = {
+		.ctx = {
+			.actor = fillvdir
+		}
+	};
+	struct inode *inode;
+	struct au_vdir *vdir, *allocated;
+
+	err = 0;
+	inode = file_inode(file);
+	IMustLock(inode);
+	IiMustWriteLock(inode);
+	SiMustAnyLock(inode->i_sb);
+
+	allocated = NULL;
+	do_read = 0;
+	expire = au_sbi(inode->i_sb)->si_rdcache;
+	vdir = au_ivdir(inode);
+	if (!vdir) {
+		do_read = 1;
+		vdir = alloc_vdir(file);
+		err = PTR_ERR(vdir);
+		if (IS_ERR(vdir))
+			goto out;
+		err = 0;
+		allocated = vdir;
+	} else if (may_read
+		   && (!inode_eq_iversion(inode, vdir->vd_version)
+		       || time_after(jiffies, vdir->vd_jiffy + expire))) {
+		do_read = 1;
+		err = reinit_vdir(vdir);
+		if (unlikely(err))
+			goto out;
+	}
+
+	if (!do_read)
+		return 0; /* success */
+
+	arg.file = file;
+	arg.vdir = vdir;
+	err = au_do_read_vdir(&arg);
+	if (!err) {
+		/* file->f_pos = 0; */ /* todo: ctx->pos? */
+		vdir->vd_version = inode_query_iversion(inode);
+		vdir->vd_last.ul = 0;
+		vdir->vd_last.p.deblk = vdir->vd_deblk[0];
+		if (allocated)
+			au_set_ivdir(inode, allocated);
+	} else if (allocated)
+		au_vdir_free(allocated);
+
+out:
+	return err;
+}
+
+static int copy_vdir(struct au_vdir *tgt, struct au_vdir *src)
+{
+	int err, rerr;
+	unsigned long ul, n;
+	const unsigned int deblk_sz = src->vd_deblk_sz;
+
+	AuDebugOn(tgt->vd_nblk != 1);
+
+	err = -ENOMEM;
+	if (tgt->vd_nblk < src->vd_nblk) {
+		unsigned char **p;
+
+		p = au_krealloc(tgt->vd_deblk, sizeof(*p) * src->vd_nblk,
+				GFP_NOFS, /*may_shrink*/0);
+		if (unlikely(!p))
+			goto out;
+		tgt->vd_deblk = p;
+	}
+
+	if (tgt->vd_deblk_sz != deblk_sz) {
+		unsigned char *p;
+
+		tgt->vd_deblk_sz = deblk_sz;
+		p = au_krealloc(tgt->vd_deblk[0], deblk_sz, GFP_NOFS,
+				/*may_shrink*/1);
+		if (unlikely(!p))
+			goto out;
+		tgt->vd_deblk[0] = p;
+	}
+	memcpy(tgt->vd_deblk[0], src->vd_deblk[0], deblk_sz);
+	tgt->vd_version = src->vd_version;
+	tgt->vd_jiffy = src->vd_jiffy;
+
+	n = src->vd_nblk;
+	for (ul = 1; ul < n; ul++) {
+		tgt->vd_deblk[ul] = kmemdup(src->vd_deblk[ul], deblk_sz,
+					    GFP_NOFS);
+		if (unlikely(!tgt->vd_deblk[ul]))
+			goto out;
+		tgt->vd_nblk++;
+	}
+	tgt->vd_nblk = n;
+	tgt->vd_last.ul = tgt->vd_last.ul;
+	tgt->vd_last.p.deblk = tgt->vd_deblk[tgt->vd_last.ul];
+	tgt->vd_last.p.deblk += src->vd_last.p.deblk
+		- src->vd_deblk[src->vd_last.ul];
+	/* smp_mb(); */
+	return 0; /* success */
+
+out:
+	rerr = reinit_vdir(tgt);
+	BUG_ON(rerr);
+	return err;
+}
+
+int au_vdir_init(struct file *file)
+{
+	int err;
+	struct inode *inode;
+	struct au_vdir *vdir_cache, *allocated;
+
+	/* test file->f_pos here instead of ctx->pos */
+	err = read_vdir(file, !file->f_pos);
+	if (unlikely(err))
+		goto out;
+
+	allocated = NULL;
+	vdir_cache = au_fvdir_cache(file);
+	if (!vdir_cache) {
+		vdir_cache = alloc_vdir(file);
+		err = PTR_ERR(vdir_cache);
+		if (IS_ERR(vdir_cache))
+			goto out;
+		allocated = vdir_cache;
+	} else if (!file->f_pos && vdir_cache->vd_version != file->f_version) {
+		/* test file->f_pos here instead of ctx->pos */
+		err = reinit_vdir(vdir_cache);
+		if (unlikely(err))
+			goto out;
+	} else
+		return 0; /* success */
+
+	inode = file_inode(file);
+	err = copy_vdir(vdir_cache, au_ivdir(inode));
+	if (!err) {
+		file->f_version = inode_query_iversion(inode);
+		if (allocated)
+			au_set_fvdir_cache(file, allocated);
+	} else if (allocated)
+		au_vdir_free(allocated);
+
+out:
+	return err;
+}
+
+static loff_t calc_offset(struct au_vdir *vdir)
+{
+	loff_t offset;
+	union au_vdir_deblk_p p;
+
+	p.deblk = vdir->vd_deblk[vdir->vd_last.ul];
+	offset = vdir->vd_last.p.deblk - p.deblk;
+	offset += vdir->vd_deblk_sz * vdir->vd_last.ul;
+	return offset;
+}
+
+/* returns true or false */
+static int seek_vdir(struct file *file, struct dir_context *ctx)
+{
+	int valid;
+	unsigned int deblk_sz;
+	unsigned long ul, n;
+	loff_t offset;
+	union au_vdir_deblk_p p, deblk_end;
+	struct au_vdir *vdir_cache;
+
+	valid = 1;
+	vdir_cache = au_fvdir_cache(file);
+	offset = calc_offset(vdir_cache);
+	AuDbg("offset %lld\n", offset);
+	if (ctx->pos == offset)
+		goto out;
+
+	vdir_cache->vd_last.ul = 0;
+	vdir_cache->vd_last.p.deblk = vdir_cache->vd_deblk[0];
+	if (!ctx->pos)
+		goto out;
+
+	valid = 0;
+	deblk_sz = vdir_cache->vd_deblk_sz;
+	ul = div64_u64(ctx->pos, deblk_sz);
+	AuDbg("ul %lu\n", ul);
+	if (ul >= vdir_cache->vd_nblk)
+		goto out;
+
+	n = vdir_cache->vd_nblk;
+	for (; ul < n; ul++) {
+		p.deblk = vdir_cache->vd_deblk[ul];
+		deblk_end.deblk = p.deblk + deblk_sz;
+		offset = ul;
+		offset *= deblk_sz;
+		while (!is_deblk_end(&p, &deblk_end) && offset < ctx->pos) {
+			unsigned int l;
+
+			l = calc_size(p.de->de_str.len);
+			offset += l;
+			p.deblk += l;
+		}
+		if (!is_deblk_end(&p, &deblk_end)) {
+			valid = 1;
+			vdir_cache->vd_last.ul = ul;
+			vdir_cache->vd_last.p = p;
+			break;
+		}
+	}
+
+out:
+	/* smp_mb(); */
+	if (!valid)
+		AuDbg("valid %d\n", !valid);
+	return valid;
+}
+
+int au_vdir_fill_de(struct file *file, struct dir_context *ctx)
+{
+	unsigned int l, deblk_sz;
+	union au_vdir_deblk_p deblk_end;
+	struct au_vdir *vdir_cache;
+	struct au_vdir_de *de;
+
+	if (!seek_vdir(file, ctx))
+		return 0;
+
+	vdir_cache = au_fvdir_cache(file);
+	deblk_sz = vdir_cache->vd_deblk_sz;
+	while (1) {
+		deblk_end.deblk = vdir_cache->vd_deblk[vdir_cache->vd_last.ul];
+		deblk_end.deblk += deblk_sz;
+		while (!is_deblk_end(&vdir_cache->vd_last.p, &deblk_end)) {
+			de = vdir_cache->vd_last.p.de;
+			AuDbg("%.*s, off%lld, i%lu, dt%d\n",
+			      de->de_str.len, de->de_str.name, ctx->pos,
+			      (unsigned long)de->de_ino, de->de_type);
+			if (unlikely(!dir_emit(ctx, de->de_str.name,
+					       de->de_str.len, de->de_ino,
+					       de->de_type))) {
+				/* todo: ignore the error caused by udba? */
+				/* return err; */
+				return 0;
+			}
+
+			l = calc_size(de->de_str.len);
+			vdir_cache->vd_last.p.deblk += l;
+			ctx->pos += l;
+		}
+		if (vdir_cache->vd_last.ul < vdir_cache->vd_nblk - 1) {
+			vdir_cache->vd_last.ul++;
+			vdir_cache->vd_last.p.deblk
+				= vdir_cache->vd_deblk[vdir_cache->vd_last.ul];
+			ctx->pos = deblk_sz * vdir_cache->vd_last.ul;
+			continue;
+		}
+		break;
+	}
+
+	/* smp_mb(); */
+	return 0;
+}
diff -Naur --no-dereference a/fs/aufs/vfsub.c b/fs/aufs/vfsub.c
--- a/fs/aufs/vfsub.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/vfsub.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,918 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sub-routines for VFS
+ */
+
+#include <linux/mnt_namespace.h>
+#include <linux/nsproxy.h>
+#include <linux/security.h>
+#include <linux/splice.h>
+#include "aufs.h"
+
+#ifdef CONFIG_AUFS_BR_FUSE
+int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb)
+{
+	if (!au_test_fuse(h_sb) || !au_userns)
+		return 0;
+
+	return is_current_mnt_ns(mnt) ? 0 : -EACCES;
+}
+#endif
+
+int vfsub_sync_filesystem(struct super_block *h_sb)
+{
+	int err;
+
+	lockdep_off();
+	down_read(&h_sb->s_umount);
+	err = sync_filesystem(h_sb);
+	up_read(&h_sb->s_umount);
+	lockdep_on();
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int vfsub_update_h_iattr(struct path *h_path, int *did)
+{
+	int err;
+	struct kstat st;
+	struct super_block *h_sb;
+
+	/*
+	 * Always needs h_path->mnt for LSM or FUSE branch.
+	 */
+	AuDebugOn(!h_path->mnt);
+
+	/* for remote fs, leave work for its getattr or d_revalidate */
+	/* for bad i_attr fs, handle them in aufs_getattr() */
+	/* still some fs may acquire i_mutex. we need to skip them */
+	err = 0;
+	if (!did)
+		did = &err;
+	h_sb = h_path->dentry->d_sb;
+	*did = (!au_test_fs_remote(h_sb) && au_test_fs_refresh_iattr(h_sb));
+	if (*did)
+		err = vfsub_getattr(h_path, &st);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct file *vfsub_dentry_open(struct path *path, int flags)
+{
+	return dentry_open(path, flags /* | __FMODE_NONOTIFY */,
+			   current_cred());
+}
+
+struct file *vfsub_filp_open(const char *path, int oflags, int mode)
+{
+	struct file *file;
+
+	lockdep_off();
+	file = filp_open(path,
+			 oflags /* | __FMODE_NONOTIFY */,
+			 mode);
+	lockdep_on();
+	if (IS_ERR(file))
+		goto out;
+	vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+
+out:
+	return file;
+}
+
+/*
+ * Ideally this function should call VFS:do_last() in order to keep all its
+ * checkings. But it is very hard for aufs to regenerate several VFS internal
+ * structure such as nameidata. This is a second (or third) best approach.
+ * cf. linux/fs/namei.c:do_last(), lookup_open() and atomic_open().
+ */
+int vfsub_atomic_open(struct inode *dir, struct dentry *dentry,
+		      struct vfsub_aopen_args *args)
+{
+	int err;
+	struct au_branch *br = args->br;
+	struct file *file = args->file;
+	/* copied from linux/fs/namei.c:atomic_open() */
+	struct dentry *const DENTRY_NOT_SET = (void *)-1UL;
+
+	IMustLock(dir);
+	AuDebugOn(!dir->i_op->atomic_open);
+
+	err = au_br_test_oflag(args->open_flag, br);
+	if (unlikely(err))
+		goto out;
+
+	au_lcnt_inc(&br->br_nfiles);
+	file->f_path.dentry = DENTRY_NOT_SET;
+	file->f_path.mnt = au_br_mnt(br);
+	AuDbg("%ps\n", dir->i_op->atomic_open);
+	err = dir->i_op->atomic_open(dir, dentry, file, args->open_flag,
+				     args->create_mode);
+	if (unlikely(err < 0)) {
+		au_lcnt_dec(&br->br_nfiles);
+		goto out;
+	}
+
+	/* temporary workaround for nfsv4 branch */
+	if (au_test_nfs(dir->i_sb))
+		nfs_mark_for_revalidate(dir);
+
+	if (file->f_mode & FMODE_CREATED)
+		fsnotify_create(dir, dentry);
+	if (!(file->f_mode & FMODE_OPENED)) {
+		au_lcnt_dec(&br->br_nfiles);
+		goto out;
+	}
+
+	/* todo: call VFS:may_open() here */
+	/* todo: ima_file_check() too? */
+	if (!err && (args->open_flag & __FMODE_EXEC))
+		err = deny_write_access(file);
+	if (!err)
+		fsnotify_open(file);
+	else
+		au_lcnt_dec(&br->br_nfiles);
+	/* note that the file is created and still opened */
+
+out:
+	return err;
+}
+
+int vfsub_kern_path(const char *name, unsigned int flags, struct path *path)
+{
+	int err;
+
+	err = kern_path(name, flags, path);
+	if (!err && d_is_positive(path->dentry))
+		vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/
+	return err;
+}
+
+struct dentry *vfsub_lookup_one_len_unlocked(const char *name,
+					     struct path *ppath, int len)
+{
+	struct path path;
+
+	path.dentry = lookup_one_len_unlocked(name, ppath->dentry, len);
+	if (IS_ERR(path.dentry))
+		goto out;
+	if (d_is_positive(path.dentry)) {
+		path.mnt = ppath->mnt;
+		vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/
+	}
+
+out:
+	AuTraceErrPtr(path.dentry);
+	return path.dentry;
+}
+
+struct dentry *vfsub_lookup_one_len(const char *name, struct path *ppath,
+				    int len)
+{
+	struct path path;
+
+	/* VFS checks it too, but by WARN_ON_ONCE() */
+	IMustLock(d_inode(ppath->dentry));
+
+	path.dentry = lookup_one_len(name, ppath->dentry, len);
+	if (IS_ERR(path.dentry))
+		goto out;
+	if (d_is_positive(path.dentry)) {
+		path.mnt = ppath->mnt;
+		vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/
+	}
+
+out:
+	AuTraceErrPtr(path.dentry);
+	return path.dentry;
+}
+
+void vfsub_call_lkup_one(void *args)
+{
+	struct vfsub_lkup_one_args *a = args;
+	*a->errp = vfsub_lkup_one(a->name, a->ppath);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1,
+				 struct dentry *d2, struct au_hinode *hdir2)
+{
+	struct dentry *d;
+
+	lockdep_off();
+	d = lock_rename(d1, d2);
+	lockdep_on();
+	au_hn_suspend(hdir1);
+	if (hdir1 != hdir2)
+		au_hn_suspend(hdir2);
+
+	return d;
+}
+
+void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1,
+			 struct dentry *d2, struct au_hinode *hdir2)
+{
+	au_hn_resume(hdir1);
+	if (hdir1 != hdir2)
+		au_hn_resume(hdir2);
+	lockdep_off();
+	unlock_rename(d1, d2);
+	lockdep_on();
+}
+
+/* ---------------------------------------------------------------------- */
+
+int vfsub_create(struct inode *dir, struct path *path, int mode, bool want_excl)
+{
+	int err;
+	struct dentry *d;
+	struct user_namespace *userns;
+
+	IMustLock(dir);
+
+	d = path->dentry;
+	path->dentry = d->d_parent;
+	err = security_path_mknod(path, d, mode, 0);
+	path->dentry = d;
+	if (unlikely(err))
+		goto out;
+	userns = mnt_user_ns(path->mnt);
+
+	lockdep_off();
+	err = vfs_create(userns, dir, path->dentry, mode, want_excl);
+	lockdep_on();
+	if (!err) {
+		struct path tmp = *path;
+		int did;
+
+		vfsub_update_h_iattr(&tmp, &did);
+		if (did) {
+			tmp.dentry = path->dentry->d_parent;
+			vfsub_update_h_iattr(&tmp, /*did*/NULL);
+		}
+		/*ignore*/
+	}
+
+out:
+	return err;
+}
+
+int vfsub_symlink(struct inode *dir, struct path *path, const char *symname)
+{
+	int err;
+	struct dentry *d;
+	struct user_namespace *userns;
+
+	IMustLock(dir);
+
+	d = path->dentry;
+	path->dentry = d->d_parent;
+	err = security_path_symlink(path, d, symname);
+	path->dentry = d;
+	if (unlikely(err))
+		goto out;
+	userns = mnt_user_ns(path->mnt);
+
+	lockdep_off();
+	err = vfs_symlink(userns, dir, path->dentry, symname);
+	lockdep_on();
+	if (!err) {
+		struct path tmp = *path;
+		int did;
+
+		vfsub_update_h_iattr(&tmp, &did);
+		if (did) {
+			tmp.dentry = path->dentry->d_parent;
+			vfsub_update_h_iattr(&tmp, /*did*/NULL);
+		}
+		/*ignore*/
+	}
+
+out:
+	return err;
+}
+
+int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev)
+{
+	int err;
+	struct dentry *d;
+	struct user_namespace *userns;
+
+	IMustLock(dir);
+
+	d = path->dentry;
+	path->dentry = d->d_parent;
+	err = security_path_mknod(path, d, mode, new_encode_dev(dev));
+	path->dentry = d;
+	if (unlikely(err))
+		goto out;
+	userns = mnt_user_ns(path->mnt);
+
+	lockdep_off();
+	err = vfs_mknod(userns, dir, path->dentry, mode, dev);
+	lockdep_on();
+	if (!err) {
+		struct path tmp = *path;
+		int did;
+
+		vfsub_update_h_iattr(&tmp, &did);
+		if (did) {
+			tmp.dentry = path->dentry->d_parent;
+			vfsub_update_h_iattr(&tmp, /*did*/NULL);
+		}
+		/*ignore*/
+	}
+
+out:
+	return err;
+}
+
+static int au_test_nlink(struct inode *inode)
+{
+	const unsigned int link_max = UINT_MAX >> 1; /* rough margin */
+
+	if (!au_test_fs_no_limit_nlink(inode->i_sb)
+	    || inode->i_nlink < link_max)
+		return 0;
+	return -EMLINK;
+}
+
+int vfsub_link(struct dentry *src_dentry, struct inode *dir, struct path *path,
+	       struct inode **delegated_inode)
+{
+	int err;
+	struct dentry *d;
+	struct user_namespace *userns;
+
+	IMustLock(dir);
+
+	err = au_test_nlink(d_inode(src_dentry));
+	if (unlikely(err))
+		return err;
+
+	/* we don't call may_linkat() */
+	d = path->dentry;
+	path->dentry = d->d_parent;
+	err = security_path_link(src_dentry, path, d);
+	path->dentry = d;
+	if (unlikely(err))
+		goto out;
+	userns = mnt_user_ns(path->mnt);
+
+	lockdep_off();
+	err = vfs_link(src_dentry, userns, dir, path->dentry, delegated_inode);
+	lockdep_on();
+	if (!err) {
+		struct path tmp = *path;
+		int did;
+
+		/* fuse has different memory inode for the same inumber */
+		vfsub_update_h_iattr(&tmp, &did);
+		if (did) {
+			tmp.dentry = path->dentry->d_parent;
+			vfsub_update_h_iattr(&tmp, /*did*/NULL);
+			tmp.dentry = src_dentry;
+			vfsub_update_h_iattr(&tmp, /*did*/NULL);
+		}
+		/*ignore*/
+	}
+
+out:
+	return err;
+}
+
+int vfsub_rename(struct inode *src_dir, struct dentry *src_dentry,
+		 struct inode *dir, struct path *path,
+		 struct inode **delegated_inode, unsigned int flags)
+{
+	int err;
+	struct renamedata rd;
+	struct path tmp = {
+		.mnt	= path->mnt
+	};
+	struct dentry *d;
+
+	IMustLock(dir);
+	IMustLock(src_dir);
+
+	d = path->dentry;
+	path->dentry = d->d_parent;
+	tmp.dentry = src_dentry->d_parent;
+	err = security_path_rename(&tmp, src_dentry, path, d, /*flags*/0);
+	path->dentry = d;
+	if (unlikely(err))
+		goto out;
+
+	rd.old_mnt_userns = mnt_user_ns(path->mnt);
+	rd.old_dir = src_dir;
+	rd.old_dentry = src_dentry;
+	rd.new_mnt_userns = rd.old_mnt_userns;
+	rd.new_dir = dir;
+	rd.new_dentry = path->dentry;
+	rd.delegated_inode = delegated_inode;
+	rd.flags = flags;
+	lockdep_off();
+	err = vfs_rename(&rd);
+	lockdep_on();
+	if (!err) {
+		int did;
+
+		tmp.dentry = d->d_parent;
+		vfsub_update_h_iattr(&tmp, &did);
+		if (did) {
+			tmp.dentry = src_dentry;
+			vfsub_update_h_iattr(&tmp, /*did*/NULL);
+			tmp.dentry = src_dentry->d_parent;
+			vfsub_update_h_iattr(&tmp, /*did*/NULL);
+		}
+		/*ignore*/
+	}
+
+out:
+	return err;
+}
+
+int vfsub_mkdir(struct inode *dir, struct path *path, int mode)
+{
+	int err;
+	struct dentry *d;
+	struct user_namespace *userns;
+
+	IMustLock(dir);
+
+	d = path->dentry;
+	path->dentry = d->d_parent;
+	err = security_path_mkdir(path, d, mode);
+	path->dentry = d;
+	if (unlikely(err))
+		goto out;
+	userns = mnt_user_ns(path->mnt);
+
+	lockdep_off();
+	err = vfs_mkdir(userns, dir, path->dentry, mode);
+	lockdep_on();
+	if (!err) {
+		struct path tmp = *path;
+		int did;
+
+		vfsub_update_h_iattr(&tmp, &did);
+		if (did) {
+			tmp.dentry = path->dentry->d_parent;
+			vfsub_update_h_iattr(&tmp, /*did*/NULL);
+		}
+		/*ignore*/
+	}
+
+out:
+	return err;
+}
+
+int vfsub_rmdir(struct inode *dir, struct path *path)
+{
+	int err;
+	struct dentry *d;
+	struct user_namespace *userns;
+
+	IMustLock(dir);
+
+	d = path->dentry;
+	path->dentry = d->d_parent;
+	err = security_path_rmdir(path, d);
+	path->dentry = d;
+	if (unlikely(err))
+		goto out;
+	userns = mnt_user_ns(path->mnt);
+
+	lockdep_off();
+	err = vfs_rmdir(userns, dir, path->dentry);
+	lockdep_on();
+	if (!err) {
+		struct path tmp = {
+			.dentry	= path->dentry->d_parent,
+			.mnt	= path->mnt
+		};
+
+		vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/
+	}
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* todo: support mmap_sem? */
+ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count,
+		     loff_t *ppos)
+{
+	ssize_t err;
+
+	lockdep_off();
+	err = vfs_read(file, ubuf, count, ppos);
+	lockdep_on();
+	if (err >= 0)
+		vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+	return err;
+}
+
+ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count,
+		     loff_t *ppos)
+{
+	ssize_t err;
+
+	lockdep_off();
+	err = kernel_read(file, kbuf, count, ppos);
+	lockdep_on();
+	AuTraceErr(err);
+	if (err >= 0)
+		vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+	return err;
+}
+
+ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count,
+		      loff_t *ppos)
+{
+	ssize_t err;
+
+	lockdep_off();
+	err = vfs_write(file, ubuf, count, ppos);
+	lockdep_on();
+	if (err >= 0)
+		vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+	return err;
+}
+
+ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count, loff_t *ppos)
+{
+	ssize_t err;
+
+	lockdep_off();
+	err = kernel_write(file, kbuf, count, ppos);
+	lockdep_on();
+	if (err >= 0)
+		vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+	return err;
+}
+
+int vfsub_flush(struct file *file, fl_owner_t id)
+{
+	int err;
+
+	err = 0;
+	if (file->f_op->flush) {
+		if (!au_test_nfs(file->f_path.dentry->d_sb))
+			err = file->f_op->flush(file, id);
+		else {
+			lockdep_off();
+			err = file->f_op->flush(file, id);
+			lockdep_on();
+		}
+		if (!err)
+			vfsub_update_h_iattr(&file->f_path, /*did*/NULL);
+		/*ignore*/
+	}
+	return err;
+}
+
+int vfsub_iterate_dir(struct file *file, struct dir_context *ctx)
+{
+	int err;
+
+	AuDbg("%pD, ctx{%ps, %llu}\n", file, ctx->actor, ctx->pos);
+
+	lockdep_off();
+	err = iterate_dir(file, ctx);
+	lockdep_on();
+	if (err >= 0)
+		vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/
+
+	return err;
+}
+
+long vfsub_splice_to(struct file *in, loff_t *ppos,
+		     struct pipe_inode_info *pipe, size_t len,
+		     unsigned int flags)
+{
+	long err;
+
+	lockdep_off();
+	err = do_splice_to(in, ppos, pipe, len, flags);
+	lockdep_on();
+	file_accessed(in);
+	if (err >= 0)
+		vfsub_update_h_iattr(&in->f_path, /*did*/NULL); /*ignore*/
+	return err;
+}
+
+long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out,
+		       loff_t *ppos, size_t len, unsigned int flags)
+{
+	long err;
+
+	lockdep_off();
+	err = do_splice_from(pipe, out, ppos, len, flags);
+	lockdep_on();
+	if (err >= 0)
+		vfsub_update_h_iattr(&out->f_path, /*did*/NULL); /*ignore*/
+	return err;
+}
+
+int vfsub_fsync(struct file *file, struct path *path, int datasync)
+{
+	int err;
+
+	/* file can be NULL */
+	lockdep_off();
+	err = vfs_fsync(file, datasync);
+	lockdep_on();
+	if (!err) {
+		if (!path) {
+			AuDebugOn(!file);
+			path = &file->f_path;
+		}
+		vfsub_update_h_iattr(path, /*did*/NULL); /*ignore*/
+	}
+	return err;
+}
+
+/* cf. open.c:do_sys_truncate() and do_sys_ftruncate() */
+int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr,
+		struct file *h_file)
+{
+	int err;
+	struct inode *h_inode;
+	struct super_block *h_sb;
+	struct user_namespace *h_userns;
+
+	if (!h_file) {
+		err = vfsub_truncate(h_path, length);
+		goto out;
+	}
+
+	h_inode = d_inode(h_path->dentry);
+	h_sb = h_inode->i_sb;
+	lockdep_off();
+	sb_start_write(h_sb);
+	lockdep_on();
+	err = security_path_truncate(h_path);
+	if (!err) {
+		h_userns = mnt_user_ns(h_path->mnt);
+		lockdep_off();
+		err = do_truncate(h_userns, h_path->dentry, length, attr,
+				  h_file);
+		lockdep_on();
+	}
+	lockdep_off();
+	sb_end_write(h_sb);
+	lockdep_on();
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_vfsub_mkdir_args {
+	int *errp;
+	struct inode *dir;
+	struct path *path;
+	int mode;
+};
+
+static void au_call_vfsub_mkdir(void *args)
+{
+	struct au_vfsub_mkdir_args *a = args;
+	*a->errp = vfsub_mkdir(a->dir, a->path, a->mode);
+}
+
+int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode)
+{
+	int err, do_sio, wkq_err;
+	struct user_namespace *userns;
+
+	userns = mnt_user_ns(path->mnt);
+	do_sio = au_test_h_perm_sio(userns, dir, MAY_EXEC | MAY_WRITE);
+	if (!do_sio) {
+		lockdep_off();
+		err = vfsub_mkdir(dir, path, mode);
+		lockdep_on();
+	} else {
+		struct au_vfsub_mkdir_args args = {
+			.errp	= &err,
+			.dir	= dir,
+			.path	= path,
+			.mode	= mode
+		};
+		wkq_err = au_wkq_wait(au_call_vfsub_mkdir, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	}
+
+	return err;
+}
+
+struct au_vfsub_rmdir_args {
+	int *errp;
+	struct inode *dir;
+	struct path *path;
+};
+
+static void au_call_vfsub_rmdir(void *args)
+{
+	struct au_vfsub_rmdir_args *a = args;
+	*a->errp = vfsub_rmdir(a->dir, a->path);
+}
+
+int vfsub_sio_rmdir(struct inode *dir, struct path *path)
+{
+	int err, do_sio, wkq_err;
+	struct user_namespace *userns;
+
+	userns = mnt_user_ns(path->mnt);
+	do_sio = au_test_h_perm_sio(userns, dir, MAY_EXEC | MAY_WRITE);
+	if (!do_sio) {
+		lockdep_off();
+		err = vfsub_rmdir(dir, path);
+		lockdep_on();
+	} else {
+		struct au_vfsub_rmdir_args args = {
+			.errp	= &err,
+			.dir	= dir,
+			.path	= path
+		};
+		wkq_err = au_wkq_wait(au_call_vfsub_rmdir, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct notify_change_args {
+	int *errp;
+	struct path *path;
+	struct iattr *ia;
+	struct inode **delegated_inode;
+};
+
+static void call_notify_change(void *args)
+{
+	struct notify_change_args *a = args;
+	struct inode *h_inode;
+	struct user_namespace *userns;
+
+	h_inode = d_inode(a->path->dentry);
+	IMustLock(h_inode);
+
+	*a->errp = -EPERM;
+	if (!IS_IMMUTABLE(h_inode) && !IS_APPEND(h_inode)) {
+		userns = mnt_user_ns(a->path->mnt);
+		lockdep_off();
+		*a->errp = notify_change(userns, a->path->dentry, a->ia,
+					 a->delegated_inode);
+		lockdep_on();
+		if (!*a->errp)
+			vfsub_update_h_iattr(a->path, /*did*/NULL); /*ignore*/
+	}
+	AuTraceErr(*a->errp);
+}
+
+int vfsub_notify_change(struct path *path, struct iattr *ia,
+			struct inode **delegated_inode)
+{
+	int err;
+	struct notify_change_args args = {
+		.errp			= &err,
+		.path			= path,
+		.ia			= ia,
+		.delegated_inode	= delegated_inode
+	};
+
+	call_notify_change(&args);
+
+	return err;
+}
+
+int vfsub_sio_notify_change(struct path *path, struct iattr *ia,
+			    struct inode **delegated_inode)
+{
+	int err, wkq_err;
+	struct notify_change_args args = {
+		.errp			= &err,
+		.path			= path,
+		.ia			= ia,
+		.delegated_inode	= delegated_inode
+	};
+
+	wkq_err = au_wkq_wait(call_notify_change, &args);
+	if (unlikely(wkq_err))
+		err = wkq_err;
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct unlink_args {
+	int *errp;
+	struct inode *dir;
+	struct path *path;
+	struct inode **delegated_inode;
+};
+
+static void call_unlink(void *args)
+{
+	struct unlink_args *a = args;
+	struct dentry *d = a->path->dentry;
+	struct inode *h_inode;
+	struct user_namespace *userns;
+	const int stop_sillyrename = (au_test_nfs(d->d_sb)
+				      && au_dcount(d) == 1);
+
+	IMustLock(a->dir);
+
+	a->path->dentry = d->d_parent;
+	*a->errp = security_path_unlink(a->path, d);
+	a->path->dentry = d;
+	if (unlikely(*a->errp))
+		return;
+
+	if (!stop_sillyrename)
+		dget(d);
+	h_inode = NULL;
+	if (d_is_positive(d)) {
+		h_inode = d_inode(d);
+		ihold(h_inode);
+	}
+
+	userns = mnt_user_ns(a->path->mnt);
+	lockdep_off();
+	*a->errp = vfs_unlink(userns, a->dir, d, a->delegated_inode);
+	lockdep_on();
+	if (!*a->errp) {
+		struct path tmp = {
+			.dentry = d->d_parent,
+			.mnt	= a->path->mnt
+		};
+		vfsub_update_h_iattr(&tmp, /*did*/NULL); /*ignore*/
+	}
+
+	if (!stop_sillyrename)
+		dput(d);
+	if (h_inode)
+		iput(h_inode);
+
+	AuTraceErr(*a->errp);
+}
+
+/*
+ * @dir: must be locked.
+ * @dentry: target dentry.
+ */
+int vfsub_unlink(struct inode *dir, struct path *path,
+		 struct inode **delegated_inode, int force)
+{
+	int err;
+	struct unlink_args args = {
+		.errp			= &err,
+		.dir			= dir,
+		.path			= path,
+		.delegated_inode	= delegated_inode
+	};
+
+	if (!force)
+		call_unlink(&args);
+	else {
+		int wkq_err;
+
+		wkq_err = au_wkq_wait(call_unlink, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	}
+
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/vfsub.h b/fs/aufs/vfsub.h
--- a/fs/aufs/vfsub.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/vfsub.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,358 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * sub-routines for VFS
+ */
+
+#ifndef __AUFS_VFSUB_H__
+#define __AUFS_VFSUB_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/posix_acl.h>
+#include <linux/xattr.h>
+#include "debug.h"
+
+/* copied from linux/fs/internal.h */
+/* todo: BAD approach!! */
+extern void __mnt_drop_write(struct vfsmount *);
+extern struct file *alloc_empty_file(int, const struct cred *);
+
+/* ---------------------------------------------------------------------- */
+
+/* lock subclass for lower inode */
+/* default MAX_LOCKDEP_SUBCLASSES(8) is not enough */
+/* reduce? gave up. */
+enum {
+	AuLsc_I_Begin = I_MUTEX_PARENT2, /* 5 */
+	AuLsc_I_PARENT,		/* lower inode, parent first */
+	AuLsc_I_PARENT2,	/* copyup dirs */
+	AuLsc_I_PARENT3,	/* copyup wh */
+	AuLsc_I_CHILD,
+	AuLsc_I_CHILD2,
+	AuLsc_I_End
+};
+
+/* to debug easier, do not make them inlined functions */
+#define MtxMustLock(mtx)	AuDebugOn(!mutex_is_locked(mtx))
+#define IMustLock(i)		AuDebugOn(!inode_is_locked(i))
+
+/* ---------------------------------------------------------------------- */
+
+static inline void vfsub_drop_nlink(struct inode *inode)
+{
+	AuDebugOn(!inode->i_nlink);
+	drop_nlink(inode);
+}
+
+static inline void vfsub_dead_dir(struct inode *inode)
+{
+	AuDebugOn(!S_ISDIR(inode->i_mode));
+	inode->i_flags |= S_DEAD;
+	clear_nlink(inode);
+}
+
+static inline int vfsub_native_ro(struct inode *inode)
+{
+	return sb_rdonly(inode->i_sb)
+		|| IS_RDONLY(inode)
+		/* || IS_APPEND(inode) */
+		|| IS_IMMUTABLE(inode);
+}
+
+#ifdef CONFIG_AUFS_BR_FUSE
+int vfsub_test_mntns(struct vfsmount *mnt, struct super_block *h_sb);
+#else
+AuStubInt0(vfsub_test_mntns, struct vfsmount *mnt, struct super_block *h_sb);
+#endif
+
+int vfsub_sync_filesystem(struct super_block *h_sb);
+
+/* ---------------------------------------------------------------------- */
+
+int vfsub_update_h_iattr(struct path *h_path, int *did);
+struct file *vfsub_dentry_open(struct path *path, int flags);
+struct file *vfsub_filp_open(const char *path, int oflags, int mode);
+struct au_branch;
+struct vfsub_aopen_args {
+	struct file		*file;
+	unsigned int		open_flag;
+	umode_t			create_mode;
+	struct au_branch	*br;
+};
+int vfsub_atomic_open(struct inode *dir, struct dentry *dentry,
+		      struct vfsub_aopen_args *args);
+int vfsub_kern_path(const char *name, unsigned int flags, struct path *path);
+
+struct dentry *vfsub_lookup_one_len_unlocked(const char *name,
+					     struct path *ppath, int len);
+struct dentry *vfsub_lookup_one_len(const char *name, struct path *ppath,
+				    int len);
+
+struct vfsub_lkup_one_args {
+	struct dentry **errp;
+	struct qstr *name;
+	struct path *ppath;
+};
+
+static inline struct dentry *vfsub_lkup_one(struct qstr *name,
+					    struct path *ppath)
+{
+	return vfsub_lookup_one_len(name->name, ppath, name->len);
+}
+
+void vfsub_call_lkup_one(void *args);
+
+/* ---------------------------------------------------------------------- */
+
+static inline int vfsub_mnt_want_write(struct vfsmount *mnt)
+{
+	int err;
+
+	lockdep_off();
+	err = mnt_want_write(mnt);
+	lockdep_on();
+	return err;
+}
+
+static inline void vfsub_mnt_drop_write(struct vfsmount *mnt)
+{
+	lockdep_off();
+	mnt_drop_write(mnt);
+	lockdep_on();
+}
+
+#if 0 /* reserved */
+static inline void vfsub_mnt_drop_write_file(struct file *file)
+{
+	lockdep_off();
+	mnt_drop_write_file(file);
+	lockdep_on();
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+struct au_hinode;
+struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1,
+				 struct dentry *d2, struct au_hinode *hdir2);
+void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1,
+			 struct dentry *d2, struct au_hinode *hdir2);
+
+int vfsub_create(struct inode *dir, struct path *path, int mode,
+		 bool want_excl);
+int vfsub_symlink(struct inode *dir, struct path *path,
+		  const char *symname);
+int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev);
+int vfsub_link(struct dentry *src_dentry, struct inode *dir,
+	       struct path *path, struct inode **delegated_inode);
+int vfsub_rename(struct inode *src_hdir, struct dentry *src_dentry,
+		 struct inode *hdir, struct path *path,
+		 struct inode **delegated_inode, unsigned int flags);
+int vfsub_mkdir(struct inode *dir, struct path *path, int mode);
+int vfsub_rmdir(struct inode *dir, struct path *path);
+
+/* ---------------------------------------------------------------------- */
+
+ssize_t vfsub_read_u(struct file *file, char __user *ubuf, size_t count,
+		     loff_t *ppos);
+ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count,
+			loff_t *ppos);
+ssize_t vfsub_write_u(struct file *file, const char __user *ubuf, size_t count,
+		      loff_t *ppos);
+ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count,
+		      loff_t *ppos);
+int vfsub_flush(struct file *file, fl_owner_t id);
+int vfsub_iterate_dir(struct file *file, struct dir_context *ctx);
+
+static inline loff_t vfsub_f_size_read(struct file *file)
+{
+	return i_size_read(file_inode(file));
+}
+
+static inline unsigned int vfsub_file_flags(struct file *file)
+{
+	unsigned int flags;
+
+	spin_lock(&file->f_lock);
+	flags = file->f_flags;
+	spin_unlock(&file->f_lock);
+
+	return flags;
+}
+
+static inline int vfsub_file_execed(struct file *file)
+{
+	/* todo: direct access f_flags */
+	return !!(vfsub_file_flags(file) & __FMODE_EXEC);
+}
+
+#if 0 /* reserved */
+static inline void vfsub_file_accessed(struct file *h_file)
+{
+	file_accessed(h_file);
+	vfsub_update_h_iattr(&h_file->f_path, /*did*/NULL); /*ignore*/
+}
+#endif
+
+#if 0 /* reserved */
+static inline void vfsub_touch_atime(struct vfsmount *h_mnt,
+				     struct dentry *h_dentry)
+{
+	struct path h_path = {
+		.dentry	= h_dentry,
+		.mnt	= h_mnt
+	};
+	touch_atime(&h_path);
+	vfsub_update_h_iattr(&h_path, /*did*/NULL); /*ignore*/
+}
+#endif
+
+static inline int vfsub_update_time(struct inode *h_inode,
+				    struct timespec64 *ts, int flags)
+{
+	return inode_update_time(h_inode, ts, flags);
+	/* no vfsub_update_h_iattr() since we don't have struct path */
+}
+
+#ifdef CONFIG_FS_POSIX_ACL
+static inline int vfsub_acl_chmod(struct user_namespace *h_userns,
+				  struct inode *h_inode, umode_t h_mode)
+{
+	int err;
+
+	err = posix_acl_chmod(h_userns, h_inode, h_mode);
+	if (err == -EOPNOTSUPP)
+		err = 0;
+	return err;
+}
+#else
+AuStubInt0(vfsub_acl_chmod, struct user_namespace *h_userns,
+	   struct inode *h_inode, umode_t h_mode);
+#endif
+
+long vfsub_splice_to(struct file *in, loff_t *ppos,
+		     struct pipe_inode_info *pipe, size_t len,
+		     unsigned int flags);
+long vfsub_splice_from(struct pipe_inode_info *pipe, struct file *out,
+		       loff_t *ppos, size_t len, unsigned int flags);
+
+static inline long vfsub_truncate(struct path *path, loff_t length)
+{
+	long err;
+
+	lockdep_off();
+	err = vfs_truncate(path, length);
+	lockdep_on();
+	return err;
+}
+
+int vfsub_trunc(struct path *h_path, loff_t length, unsigned int attr,
+		struct file *h_file);
+int vfsub_fsync(struct file *file, struct path *path, int datasync);
+
+/*
+ * re-use branch fs's ioctl(FICLONE) while aufs itself doesn't support such
+ * ioctl.
+ */
+static inline loff_t vfsub_clone_file_range(struct file *src, struct file *dst,
+					    loff_t len)
+{
+	loff_t err;
+
+	lockdep_off();
+	err = vfs_clone_file_range(src, 0, dst, 0, len, /*remap_flags*/0);
+	lockdep_on();
+
+	return err;
+}
+
+/* copy_file_range(2) is a systemcall */
+static inline ssize_t vfsub_copy_file_range(struct file *src, loff_t src_pos,
+					    struct file *dst, loff_t dst_pos,
+					    size_t len, unsigned int flags)
+{
+	ssize_t ssz;
+
+	lockdep_off();
+	ssz = vfs_copy_file_range(src, src_pos, dst, dst_pos, len, flags);
+	lockdep_on();
+
+	return ssz;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline loff_t vfsub_llseek(struct file *file, loff_t offset, int origin)
+{
+	loff_t err;
+
+	lockdep_off();
+	err = vfs_llseek(file, offset, origin);
+	lockdep_on();
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode);
+int vfsub_sio_rmdir(struct inode *dir, struct path *path);
+int vfsub_sio_notify_change(struct path *path, struct iattr *ia,
+			    struct inode **delegated_inode);
+int vfsub_notify_change(struct path *path, struct iattr *ia,
+			struct inode **delegated_inode);
+int vfsub_unlink(struct inode *dir, struct path *path,
+		 struct inode **delegated_inode, int force);
+
+static inline int vfsub_getattr(const struct path *path, struct kstat *st)
+{
+	return vfs_getattr(path, st, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static inline int vfsub_setxattr(struct user_namespace *userns,
+				 struct dentry *dentry, const char *name,
+				 const void *value, size_t size, int flags)
+{
+	int err;
+
+	lockdep_off();
+	err = vfs_setxattr(userns, dentry, name, value, size, flags);
+	lockdep_on();
+
+	return err;
+}
+
+static inline int vfsub_removexattr(struct user_namespace *userns,
+				    struct dentry *dentry, const char *name)
+{
+	int err;
+
+	lockdep_off();
+	err = vfs_removexattr(userns, dentry, name);
+	lockdep_on();
+
+	return err;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_VFSUB_H__ */
diff -Naur --no-dereference a/fs/aufs/wbr_policy.c b/fs/aufs/wbr_policy.c
--- a/fs/aufs/wbr_policy.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/wbr_policy.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,830 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * policies for selecting one among multiple writable branches
+ */
+
+#include <linux/statfs.h>
+#include "aufs.h"
+
+/* subset of cpup_attr() */
+static noinline_for_stack
+int au_cpdown_attr(struct path *h_path, struct dentry *h_src)
+{
+	int err, sbits;
+	struct iattr ia;
+	struct inode *h_isrc;
+
+	h_isrc = d_inode(h_src);
+	ia.ia_valid = ATTR_FORCE | ATTR_MODE | ATTR_UID | ATTR_GID;
+	ia.ia_mode = h_isrc->i_mode;
+	ia.ia_uid = h_isrc->i_uid;
+	ia.ia_gid = h_isrc->i_gid;
+	sbits = !!(ia.ia_mode & (S_ISUID | S_ISGID));
+	au_cpup_attr_flags(d_inode(h_path->dentry), h_isrc->i_flags);
+	/* no delegation since it is just created */
+	err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL);
+
+	/* is this nfs only? */
+	if (!err && sbits && au_test_nfs(h_path->dentry->d_sb)) {
+		ia.ia_valid = ATTR_FORCE | ATTR_MODE;
+		ia.ia_mode = h_isrc->i_mode;
+		err = vfsub_sio_notify_change(h_path, &ia, /*delegated*/NULL);
+	}
+
+	return err;
+}
+
+#define AuCpdown_PARENT_OPQ	1
+#define AuCpdown_WHED		(1 << 1)
+#define AuCpdown_MADE_DIR	(1 << 2)
+#define AuCpdown_DIROPQ		(1 << 3)
+#define au_ftest_cpdown(flags, name)	((flags) & AuCpdown_##name)
+#define au_fset_cpdown(flags, name) \
+	do { (flags) |= AuCpdown_##name; } while (0)
+#define au_fclr_cpdown(flags, name) \
+	do { (flags) &= ~AuCpdown_##name; } while (0)
+
+static int au_cpdown_dir_opq(struct dentry *dentry, aufs_bindex_t bdst,
+			     unsigned int *flags)
+{
+	int err;
+	struct dentry *opq_dentry;
+
+	opq_dentry = au_diropq_create(dentry, bdst);
+	err = PTR_ERR(opq_dentry);
+	if (IS_ERR(opq_dentry))
+		goto out;
+	dput(opq_dentry);
+	au_fset_cpdown(*flags, DIROPQ);
+
+out:
+	return err;
+}
+
+static int au_cpdown_dir_wh(struct dentry *dentry, struct dentry *h_parent,
+			    struct inode *dir, aufs_bindex_t bdst)
+{
+	int err;
+	struct path h_path;
+	struct au_branch *br;
+
+	br = au_sbr(dentry->d_sb, bdst);
+	h_path.dentry = au_wh_lkup(h_parent, &dentry->d_name, br);
+	err = PTR_ERR(h_path.dentry);
+	if (IS_ERR(h_path.dentry))
+		goto out;
+
+	err = 0;
+	if (d_is_positive(h_path.dentry)) {
+		h_path.mnt = au_br_mnt(br);
+		err = au_wh_unlink_dentry(au_h_iptr(dir, bdst), &h_path,
+					  dentry);
+	}
+	dput(h_path.dentry);
+
+out:
+	return err;
+}
+
+static int au_cpdown_dir(struct dentry *dentry, aufs_bindex_t bdst,
+			 struct au_pin *pin,
+			 struct dentry *h_parent, void *arg)
+{
+	int err, rerr;
+	aufs_bindex_t bopq, btop;
+	struct path h_path;
+	struct dentry *parent;
+	struct inode *h_dir, *h_inode, *inode, *dir;
+	unsigned int *flags = arg;
+
+	btop = au_dbtop(dentry);
+	/* dentry is di-locked */
+	parent = dget_parent(dentry);
+	dir = d_inode(parent);
+	h_dir = d_inode(h_parent);
+	AuDebugOn(h_dir != au_h_iptr(dir, bdst));
+	IMustLock(h_dir);
+
+	err = au_lkup_neg(dentry, bdst, /*wh*/0);
+	if (unlikely(err < 0))
+		goto out;
+	h_path.dentry = au_h_dptr(dentry, bdst);
+	h_path.mnt = au_sbr_mnt(dentry->d_sb, bdst);
+	err = vfsub_sio_mkdir(au_h_iptr(dir, bdst), &h_path, 0755);
+	if (unlikely(err))
+		goto out_put;
+	au_fset_cpdown(*flags, MADE_DIR);
+
+	bopq = au_dbdiropq(dentry);
+	au_fclr_cpdown(*flags, WHED);
+	au_fclr_cpdown(*flags, DIROPQ);
+	if (au_dbwh(dentry) == bdst)
+		au_fset_cpdown(*flags, WHED);
+	if (!au_ftest_cpdown(*flags, PARENT_OPQ) && bopq <= bdst)
+		au_fset_cpdown(*flags, PARENT_OPQ);
+	h_inode = d_inode(h_path.dentry);
+	inode_lock_nested(h_inode, AuLsc_I_CHILD);
+	if (au_ftest_cpdown(*flags, WHED)) {
+		err = au_cpdown_dir_opq(dentry, bdst, flags);
+		if (unlikely(err)) {
+			inode_unlock(h_inode);
+			goto out_dir;
+		}
+	}
+
+	err = au_cpdown_attr(&h_path, au_h_dptr(dentry, btop));
+	inode_unlock(h_inode);
+	if (unlikely(err))
+		goto out_opq;
+
+	if (au_ftest_cpdown(*flags, WHED)) {
+		err = au_cpdown_dir_wh(dentry, h_parent, dir, bdst);
+		if (unlikely(err))
+			goto out_opq;
+	}
+
+	inode = d_inode(dentry);
+	if (au_ibbot(inode) < bdst)
+		au_set_ibbot(inode, bdst);
+	au_set_h_iptr(inode, bdst, au_igrab(h_inode),
+		      au_hi_flags(inode, /*isdir*/1));
+	au_fhsm_wrote(dentry->d_sb, bdst, /*force*/0);
+	goto out; /* success */
+
+	/* revert */
+out_opq:
+	if (au_ftest_cpdown(*flags, DIROPQ)) {
+		inode_lock_nested(h_inode, AuLsc_I_CHILD);
+		rerr = au_diropq_remove(dentry, bdst);
+		inode_unlock(h_inode);
+		if (unlikely(rerr)) {
+			AuIOErr("failed removing diropq for %pd b%d (%d)\n",
+				dentry, bdst, rerr);
+			err = -EIO;
+			goto out;
+		}
+	}
+out_dir:
+	if (au_ftest_cpdown(*flags, MADE_DIR)) {
+		rerr = vfsub_sio_rmdir(au_h_iptr(dir, bdst), &h_path);
+		if (unlikely(rerr)) {
+			AuIOErr("failed removing %pd b%d (%d)\n",
+				dentry, bdst, rerr);
+			err = -EIO;
+		}
+	}
+out_put:
+	au_set_h_dptr(dentry, bdst, NULL);
+	if (au_dbbot(dentry) == bdst)
+		au_update_dbbot(dentry);
+out:
+	dput(parent);
+	return err;
+}
+
+int au_cpdown_dirs(struct dentry *dentry, aufs_bindex_t bdst)
+{
+	int err;
+	unsigned int flags;
+
+	flags = 0;
+	err = au_cp_dirs(dentry, bdst, au_cpdown_dir, &flags);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* policies for create */
+
+int au_wbr_nonopq(struct dentry *dentry, aufs_bindex_t bindex)
+{
+	int err, i, j, ndentry;
+	aufs_bindex_t bopq;
+	struct au_dcsub_pages dpages;
+	struct au_dpage *dpage;
+	struct dentry **dentries, *parent, *d;
+
+	err = au_dpages_init(&dpages, GFP_NOFS);
+	if (unlikely(err))
+		goto out;
+	parent = dget_parent(dentry);
+	err = au_dcsub_pages_rev_aufs(&dpages, parent, /*do_include*/0);
+	if (unlikely(err))
+		goto out_free;
+
+	err = bindex;
+	for (i = 0; i < dpages.ndpage; i++) {
+		dpage = dpages.dpages + i;
+		dentries = dpage->dentries;
+		ndentry = dpage->ndentry;
+		for (j = 0; j < ndentry; j++) {
+			d = dentries[j];
+			di_read_lock_parent2(d, !AuLock_IR);
+			bopq = au_dbdiropq(d);
+			di_read_unlock(d, !AuLock_IR);
+			if (bopq >= 0 && bopq < err)
+				err = bopq;
+		}
+	}
+
+out_free:
+	dput(parent);
+	au_dpages_free(&dpages);
+out:
+	return err;
+}
+
+static int au_wbr_bu(struct super_block *sb, aufs_bindex_t bindex)
+{
+	for (; bindex >= 0; bindex--)
+		if (!au_br_rdonly(au_sbr(sb, bindex)))
+			return bindex;
+	return -EROFS;
+}
+
+/* top down parent */
+static int au_wbr_create_tdp(struct dentry *dentry,
+			     unsigned int flags __maybe_unused)
+{
+	int err;
+	aufs_bindex_t btop, bindex;
+	struct super_block *sb;
+	struct dentry *parent, *h_parent;
+
+	sb = dentry->d_sb;
+	btop = au_dbtop(dentry);
+	err = btop;
+	if (!au_br_rdonly(au_sbr(sb, btop)))
+		goto out;
+
+	err = -EROFS;
+	parent = dget_parent(dentry);
+	for (bindex = au_dbtop(parent); bindex < btop; bindex++) {
+		h_parent = au_h_dptr(parent, bindex);
+		if (!h_parent || d_is_negative(h_parent))
+			continue;
+
+		if (!au_br_rdonly(au_sbr(sb, bindex))) {
+			err = bindex;
+			break;
+		}
+	}
+	dput(parent);
+
+	/* bottom up here */
+	if (unlikely(err < 0)) {
+		err = au_wbr_bu(sb, btop - 1);
+		if (err >= 0)
+			err = au_wbr_nonopq(dentry, err);
+	}
+
+out:
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* an exception for the policy other than tdp */
+static int au_wbr_create_exp(struct dentry *dentry)
+{
+	int err;
+	aufs_bindex_t bwh, bdiropq;
+	struct dentry *parent;
+
+	err = -1;
+	bwh = au_dbwh(dentry);
+	parent = dget_parent(dentry);
+	bdiropq = au_dbdiropq(parent);
+	if (bwh >= 0) {
+		if (bdiropq >= 0)
+			err = min(bdiropq, bwh);
+		else
+			err = bwh;
+		AuDbg("%d\n", err);
+	} else if (bdiropq >= 0) {
+		err = bdiropq;
+		AuDbg("%d\n", err);
+	}
+	dput(parent);
+
+	if (err >= 0)
+		err = au_wbr_nonopq(dentry, err);
+
+	if (err >= 0 && au_br_rdonly(au_sbr(dentry->d_sb, err)))
+		err = -1;
+
+	AuDbg("%d\n", err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* round robin */
+static int au_wbr_create_init_rr(struct super_block *sb)
+{
+	int err;
+
+	err = au_wbr_bu(sb, au_sbbot(sb));
+	atomic_set(&au_sbi(sb)->si_wbr_rr_next, -err); /* less important */
+	/* smp_mb(); */
+
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+static int au_wbr_create_rr(struct dentry *dentry, unsigned int flags)
+{
+	int err, nbr;
+	unsigned int u;
+	aufs_bindex_t bindex, bbot;
+	struct super_block *sb;
+	atomic_t *next;
+
+	err = au_wbr_create_exp(dentry);
+	if (err >= 0)
+		goto out;
+
+	sb = dentry->d_sb;
+	next = &au_sbi(sb)->si_wbr_rr_next;
+	bbot = au_sbbot(sb);
+	nbr = bbot + 1;
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		if (!au_ftest_wbr(flags, DIR)) {
+			err = atomic_dec_return(next) + 1;
+			/* modulo for 0 is meaningless */
+			if (unlikely(!err))
+				err = atomic_dec_return(next) + 1;
+		} else
+			err = atomic_read(next);
+		AuDbg("%d\n", err);
+		u = err;
+		err = u % nbr;
+		AuDbg("%d\n", err);
+		if (!au_br_rdonly(au_sbr(sb, err)))
+			break;
+		err = -EROFS;
+	}
+
+	if (err >= 0)
+		err = au_wbr_nonopq(dentry, err);
+
+out:
+	AuDbg("%d\n", err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* most free space */
+static void au_mfs(struct dentry *dentry, struct dentry *parent)
+{
+	struct super_block *sb;
+	struct au_branch *br;
+	struct au_wbr_mfs *mfs;
+	struct dentry *h_parent;
+	aufs_bindex_t bindex, bbot;
+	int err;
+	unsigned long long b, bavail;
+	struct path h_path;
+	/* reduce the stack usage */
+	struct kstatfs *st;
+
+	st = kmalloc(sizeof(*st), GFP_NOFS);
+	if (unlikely(!st)) {
+		AuWarn1("failed updating mfs(%d), ignored\n", -ENOMEM);
+		return;
+	}
+
+	bavail = 0;
+	sb = dentry->d_sb;
+	mfs = &au_sbi(sb)->si_wbr_mfs;
+	MtxMustLock(&mfs->mfs_lock);
+	mfs->mfs_bindex = -EROFS;
+	mfs->mfsrr_bytes = 0;
+	if (!parent) {
+		bindex = 0;
+		bbot = au_sbbot(sb);
+	} else {
+		bindex = au_dbtop(parent);
+		bbot = au_dbtaildir(parent);
+	}
+
+	for (; bindex <= bbot; bindex++) {
+		if (parent) {
+			h_parent = au_h_dptr(parent, bindex);
+			if (!h_parent || d_is_negative(h_parent))
+				continue;
+		}
+		br = au_sbr(sb, bindex);
+		if (au_br_rdonly(br))
+			continue;
+
+		/* sb->s_root for NFS is unreliable */
+		h_path.mnt = au_br_mnt(br);
+		h_path.dentry = h_path.mnt->mnt_root;
+		err = vfs_statfs(&h_path, st);
+		if (unlikely(err)) {
+			AuWarn1("failed statfs, b%d, %d\n", bindex, err);
+			continue;
+		}
+
+		/* when the available size is equal, select the lower one */
+		BUILD_BUG_ON(sizeof(b) < sizeof(st->f_bavail)
+			     || sizeof(b) < sizeof(st->f_bsize));
+		b = st->f_bavail * st->f_bsize;
+		br->br_wbr->wbr_bytes = b;
+		if (b >= bavail) {
+			bavail = b;
+			mfs->mfs_bindex = bindex;
+			mfs->mfs_jiffy = jiffies;
+		}
+	}
+
+	mfs->mfsrr_bytes = bavail;
+	AuDbg("b%d\n", mfs->mfs_bindex);
+	au_kfree_rcu(st);
+}
+
+static int au_wbr_create_mfs(struct dentry *dentry, unsigned int flags)
+{
+	int err;
+	struct dentry *parent;
+	struct super_block *sb;
+	struct au_wbr_mfs *mfs;
+
+	err = au_wbr_create_exp(dentry);
+	if (err >= 0)
+		goto out;
+
+	sb = dentry->d_sb;
+	parent = NULL;
+	if (au_ftest_wbr(flags, PARENT))
+		parent = dget_parent(dentry);
+	mfs = &au_sbi(sb)->si_wbr_mfs;
+	mutex_lock(&mfs->mfs_lock);
+	if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire)
+	    || mfs->mfs_bindex < 0
+	    || au_br_rdonly(au_sbr(sb, mfs->mfs_bindex)))
+		au_mfs(dentry, parent);
+	mutex_unlock(&mfs->mfs_lock);
+	err = mfs->mfs_bindex;
+	dput(parent);
+
+	if (err >= 0)
+		err = au_wbr_nonopq(dentry, err);
+
+out:
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+static int au_wbr_create_init_mfs(struct super_block *sb)
+{
+	struct au_wbr_mfs *mfs;
+
+	mfs = &au_sbi(sb)->si_wbr_mfs;
+	mutex_init(&mfs->mfs_lock);
+	mfs->mfs_jiffy = 0;
+	mfs->mfs_bindex = -EROFS;
+
+	return 0;
+}
+
+static int au_wbr_create_fin_mfs(struct super_block *sb __maybe_unused)
+{
+	mutex_destroy(&au_sbi(sb)->si_wbr_mfs.mfs_lock);
+	return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* top down regardless parent, and then mfs */
+static int au_wbr_create_tdmfs(struct dentry *dentry,
+			       unsigned int flags __maybe_unused)
+{
+	int err;
+	aufs_bindex_t bwh, btail, bindex, bfound, bmfs;
+	unsigned long long watermark;
+	struct super_block *sb;
+	struct au_wbr_mfs *mfs;
+	struct au_branch *br;
+	struct dentry *parent;
+
+	sb = dentry->d_sb;
+	mfs = &au_sbi(sb)->si_wbr_mfs;
+	mutex_lock(&mfs->mfs_lock);
+	if (time_after(jiffies, mfs->mfs_jiffy + mfs->mfs_expire)
+	    || mfs->mfs_bindex < 0)
+		au_mfs(dentry, /*parent*/NULL);
+	watermark = mfs->mfsrr_watermark;
+	bmfs = mfs->mfs_bindex;
+	mutex_unlock(&mfs->mfs_lock);
+
+	/* another style of au_wbr_create_exp() */
+	bwh = au_dbwh(dentry);
+	parent = dget_parent(dentry);
+	btail = au_dbtaildir(parent);
+	if (bwh >= 0 && bwh < btail)
+		btail = bwh;
+
+	err = au_wbr_nonopq(dentry, btail);
+	if (unlikely(err < 0))
+		goto out;
+	btail = err;
+	bfound = -1;
+	for (bindex = 0; bindex <= btail; bindex++) {
+		br = au_sbr(sb, bindex);
+		if (au_br_rdonly(br))
+			continue;
+		if (br->br_wbr->wbr_bytes > watermark) {
+			bfound = bindex;
+			break;
+		}
+	}
+	err = bfound;
+	if (err < 0)
+		err = bmfs;
+
+out:
+	dput(parent);
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* most free space and then round robin */
+static int au_wbr_create_mfsrr(struct dentry *dentry, unsigned int flags)
+{
+	int err;
+	struct au_wbr_mfs *mfs;
+
+	err = au_wbr_create_mfs(dentry, flags);
+	if (err >= 0) {
+		mfs = &au_sbi(dentry->d_sb)->si_wbr_mfs;
+		mutex_lock(&mfs->mfs_lock);
+		if (mfs->mfsrr_bytes < mfs->mfsrr_watermark)
+			err = au_wbr_create_rr(dentry, flags);
+		mutex_unlock(&mfs->mfs_lock);
+	}
+
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+static int au_wbr_create_init_mfsrr(struct super_block *sb)
+{
+	int err;
+
+	au_wbr_create_init_mfs(sb); /* ignore */
+	err = au_wbr_create_init_rr(sb);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* top down parent and most free space */
+static int au_wbr_create_pmfs(struct dentry *dentry, unsigned int flags)
+{
+	int err, e2;
+	unsigned long long b;
+	aufs_bindex_t bindex, btop, bbot;
+	struct super_block *sb;
+	struct dentry *parent, *h_parent;
+	struct au_branch *br;
+
+	err = au_wbr_create_tdp(dentry, flags);
+	if (unlikely(err < 0))
+		goto out;
+	parent = dget_parent(dentry);
+	btop = au_dbtop(parent);
+	bbot = au_dbtaildir(parent);
+	if (btop == bbot)
+		goto out_parent; /* success */
+
+	e2 = au_wbr_create_mfs(dentry, flags);
+	if (e2 < 0)
+		goto out_parent; /* success */
+
+	/* when the available size is equal, select upper one */
+	sb = dentry->d_sb;
+	br = au_sbr(sb, err);
+	b = br->br_wbr->wbr_bytes;
+	AuDbg("b%d, %llu\n", err, b);
+
+	for (bindex = btop; bindex <= bbot; bindex++) {
+		h_parent = au_h_dptr(parent, bindex);
+		if (!h_parent || d_is_negative(h_parent))
+			continue;
+
+		br = au_sbr(sb, bindex);
+		if (!au_br_rdonly(br) && br->br_wbr->wbr_bytes > b) {
+			b = br->br_wbr->wbr_bytes;
+			err = bindex;
+			AuDbg("b%d, %llu\n", err, b);
+		}
+	}
+
+	if (err >= 0)
+		err = au_wbr_nonopq(dentry, err);
+
+out_parent:
+	dput(parent);
+out:
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * - top down parent
+ * - most free space with parent
+ * - most free space round-robin regardless parent
+ */
+static int au_wbr_create_pmfsrr(struct dentry *dentry, unsigned int flags)
+{
+	int err;
+	unsigned long long watermark;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct au_wbr_mfs *mfs;
+
+	err = au_wbr_create_pmfs(dentry, flags | AuWbr_PARENT);
+	if (unlikely(err < 0))
+		goto out;
+
+	sb = dentry->d_sb;
+	br = au_sbr(sb, err);
+	mfs = &au_sbi(sb)->si_wbr_mfs;
+	mutex_lock(&mfs->mfs_lock);
+	watermark = mfs->mfsrr_watermark;
+	mutex_unlock(&mfs->mfs_lock);
+	if (br->br_wbr->wbr_bytes < watermark)
+		/* regardless the parent dir */
+		err = au_wbr_create_mfsrr(dentry, flags);
+
+out:
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* policies for copyup */
+
+/* top down parent */
+static int au_wbr_copyup_tdp(struct dentry *dentry)
+{
+	return au_wbr_create_tdp(dentry, /*flags, anything is ok*/0);
+}
+
+/* bottom up parent */
+static int au_wbr_copyup_bup(struct dentry *dentry)
+{
+	int err;
+	aufs_bindex_t bindex, btop;
+	struct dentry *parent, *h_parent;
+	struct super_block *sb;
+
+	err = -EROFS;
+	sb = dentry->d_sb;
+	parent = dget_parent(dentry);
+	btop = au_dbtop(parent);
+	for (bindex = au_dbtop(dentry); bindex >= btop; bindex--) {
+		h_parent = au_h_dptr(parent, bindex);
+		if (!h_parent || d_is_negative(h_parent))
+			continue;
+
+		if (!au_br_rdonly(au_sbr(sb, bindex))) {
+			err = bindex;
+			break;
+		}
+	}
+	dput(parent);
+
+	/* bottom up here */
+	if (unlikely(err < 0))
+		err = au_wbr_bu(sb, btop - 1);
+
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+/* bottom up */
+int au_wbr_do_copyup_bu(struct dentry *dentry, aufs_bindex_t btop)
+{
+	int err;
+
+	err = au_wbr_bu(dentry->d_sb, btop);
+	AuDbg("b%d\n", err);
+	if (err > btop)
+		err = au_wbr_nonopq(dentry, err);
+
+	AuDbg("b%d\n", err);
+	return err;
+}
+
+static int au_wbr_copyup_bu(struct dentry *dentry)
+{
+	int err;
+	aufs_bindex_t btop;
+
+	btop = au_dbtop(dentry);
+	err = au_wbr_do_copyup_bu(dentry, btop);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_wbr_copyup_operations au_wbr_copyup_ops[] = {
+	[AuWbrCopyup_TDP] = {
+		.copyup	= au_wbr_copyup_tdp
+	},
+	[AuWbrCopyup_BUP] = {
+		.copyup	= au_wbr_copyup_bup
+	},
+	[AuWbrCopyup_BU] = {
+		.copyup	= au_wbr_copyup_bu
+	}
+};
+
+struct au_wbr_create_operations au_wbr_create_ops[] = {
+	[AuWbrCreate_TDP] = {
+		.create	= au_wbr_create_tdp
+	},
+	[AuWbrCreate_RR] = {
+		.create	= au_wbr_create_rr,
+		.init	= au_wbr_create_init_rr
+	},
+	[AuWbrCreate_MFS] = {
+		.create	= au_wbr_create_mfs,
+		.init	= au_wbr_create_init_mfs,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_MFSV] = {
+		.create	= au_wbr_create_mfs,
+		.init	= au_wbr_create_init_mfs,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_MFSRR] = {
+		.create	= au_wbr_create_mfsrr,
+		.init	= au_wbr_create_init_mfsrr,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_MFSRRV] = {
+		.create	= au_wbr_create_mfsrr,
+		.init	= au_wbr_create_init_mfsrr,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_TDMFS] = {
+		.create	= au_wbr_create_tdmfs,
+		.init	= au_wbr_create_init_mfs,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_TDMFSV] = {
+		.create	= au_wbr_create_tdmfs,
+		.init	= au_wbr_create_init_mfs,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_PMFS] = {
+		.create	= au_wbr_create_pmfs,
+		.init	= au_wbr_create_init_mfs,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_PMFSV] = {
+		.create	= au_wbr_create_pmfs,
+		.init	= au_wbr_create_init_mfs,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_PMFSRR] = {
+		.create	= au_wbr_create_pmfsrr,
+		.init	= au_wbr_create_init_mfsrr,
+		.fin	= au_wbr_create_fin_mfs
+	},
+	[AuWbrCreate_PMFSRRV] = {
+		.create	= au_wbr_create_pmfsrr,
+		.init	= au_wbr_create_init_mfsrr,
+		.fin	= au_wbr_create_fin_mfs
+	}
+};
diff -Naur --no-dereference a/fs/aufs/whout.c b/fs/aufs/whout.c
--- a/fs/aufs/whout.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/whout.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1072 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * whiteout for logical deletion and opaque directory
+ */
+
+#include "aufs.h"
+
+#define WH_MASK			0444
+
+/*
+ * If a directory contains this file, then it is opaque.  We start with the
+ * .wh. flag so that it is blocked by lookup.
+ */
+static struct qstr diropq_name = QSTR_INIT(AUFS_WH_DIROPQ,
+					   sizeof(AUFS_WH_DIROPQ) - 1);
+
+/*
+ * generate whiteout name, which is NOT terminated by NULL.
+ * @name: original d_name.name
+ * @len: original d_name.len
+ * @wh: whiteout qstr
+ * returns zero when succeeds, otherwise error.
+ * succeeded value as wh->name should be freed by kfree().
+ */
+int au_wh_name_alloc(struct qstr *wh, const struct qstr *name)
+{
+	char *p;
+
+	if (unlikely(name->len > PATH_MAX - AUFS_WH_PFX_LEN))
+		return -ENAMETOOLONG;
+
+	wh->len = name->len + AUFS_WH_PFX_LEN;
+	p = kmalloc(wh->len, GFP_NOFS);
+	wh->name = p;
+	if (p) {
+		memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
+		memcpy(p + AUFS_WH_PFX_LEN, name->name, name->len);
+		/* smp_mb(); */
+		return 0;
+	}
+	return -ENOMEM;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * test if the @wh_name exists under @h_ppath.
+ * @try_sio specifies the necessary of super-io.
+ */
+int au_wh_test(struct user_namespace *h_userns, struct path *h_ppath,
+	       struct qstr *wh_name, int try_sio)
+{
+	int err;
+	struct dentry *wh_dentry;
+
+	if (!try_sio)
+		wh_dentry = vfsub_lkup_one(wh_name, h_ppath);
+	else
+		wh_dentry = au_sio_lkup_one(h_userns, wh_name, h_ppath);
+	err = PTR_ERR(wh_dentry);
+	if (IS_ERR(wh_dentry)) {
+		if (err == -ENAMETOOLONG)
+			err = 0;
+		goto out;
+	}
+
+	err = 0;
+	if (d_is_negative(wh_dentry))
+		goto out_wh; /* success */
+
+	err = 1;
+	if (d_is_reg(wh_dentry))
+		goto out_wh; /* success */
+
+	err = -EIO;
+	AuIOErr("%pd Invalid whiteout entry type 0%o.\n",
+		wh_dentry, d_inode(wh_dentry)->i_mode);
+
+out_wh:
+	dput(wh_dentry);
+out:
+	return err;
+}
+
+/*
+ * test if the @h_path->dentry sets opaque or not.
+ */
+int au_diropq_test(struct user_namespace *h_userns, struct path *h_path)
+{
+	int err;
+	struct inode *h_dir;
+
+	h_dir = d_inode(h_path->dentry);
+	err = au_wh_test(h_userns, h_path, &diropq_name,
+			 au_test_h_perm_sio(h_userns, h_dir, MAY_EXEC));
+	return err;
+}
+
+/*
+ * returns a negative dentry whose name is unique and temporary.
+ */
+struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br,
+			     struct qstr *prefix)
+{
+	struct dentry *dentry;
+	int i;
+	char defname[NAME_MAX - AUFS_MAX_NAMELEN + DNAME_INLINE_LEN + 1],
+		*name, *p;
+	/* strict atomic_t is unnecessary here */
+	static unsigned short cnt;
+	struct qstr qs;
+	struct path h_ppath;
+	struct user_namespace *h_userns;
+
+	BUILD_BUG_ON(sizeof(cnt) * 2 > AUFS_WH_TMP_LEN);
+
+	name = defname;
+	qs.len = sizeof(defname) - DNAME_INLINE_LEN + prefix->len - 1;
+	if (unlikely(prefix->len > DNAME_INLINE_LEN)) {
+		dentry = ERR_PTR(-ENAMETOOLONG);
+		if (unlikely(qs.len > NAME_MAX))
+			goto out;
+		dentry = ERR_PTR(-ENOMEM);
+		name = kmalloc(qs.len + 1, GFP_NOFS);
+		if (unlikely(!name))
+			goto out;
+	}
+
+	/* doubly whiteout-ed */
+	memcpy(name, AUFS_WH_PFX AUFS_WH_PFX, AUFS_WH_PFX_LEN * 2);
+	p = name + AUFS_WH_PFX_LEN * 2;
+	memcpy(p, prefix->name, prefix->len);
+	p += prefix->len;
+	*p++ = '.';
+	AuDebugOn(name + qs.len + 1 - p <= AUFS_WH_TMP_LEN);
+
+	h_ppath.dentry = h_parent;
+	h_ppath.mnt = au_br_mnt(br);
+	h_userns = au_br_userns(br);
+	qs.name = name;
+	for (i = 0; i < 3; i++) {
+		sprintf(p, "%.*x", AUFS_WH_TMP_LEN, cnt++);
+		dentry = au_sio_lkup_one(h_userns, &qs, &h_ppath);
+		if (IS_ERR(dentry) || d_is_negative(dentry))
+			goto out_name;
+		dput(dentry);
+	}
+	/* pr_warn("could not get random name\n"); */
+	dentry = ERR_PTR(-EEXIST);
+	AuDbg("%.*s\n", AuLNPair(&qs));
+	BUG();
+
+out_name:
+	if (name != defname)
+		au_kfree_try_rcu(name);
+out:
+	AuTraceErrPtr(dentry);
+	return dentry;
+}
+
+/*
+ * rename the @h_dentry on @br to the whiteouted temporary name.
+ */
+int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br)
+{
+	int err;
+	struct path h_path = {
+		.mnt = au_br_mnt(br)
+	};
+	struct inode *h_dir, *delegated;
+	struct dentry *h_parent;
+
+	h_parent = h_dentry->d_parent; /* dir inode is locked */
+	h_dir = d_inode(h_parent);
+	IMustLock(h_dir);
+
+	h_path.dentry = au_whtmp_lkup(h_parent, br, &h_dentry->d_name);
+	err = PTR_ERR(h_path.dentry);
+	if (IS_ERR(h_path.dentry))
+		goto out;
+
+	/* under the same dir, no need to lock_rename() */
+	delegated = NULL;
+	err = vfsub_rename(h_dir, h_dentry, h_dir, &h_path, &delegated,
+			   /*flags*/0);
+	AuTraceErr(err);
+	if (unlikely(err == -EWOULDBLOCK)) {
+		pr_warn("cannot retry for NFSv4 delegation"
+			" for an internal rename\n");
+		iput(delegated);
+	}
+	dput(h_path.dentry);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * functions for removing a whiteout
+ */
+
+static int do_unlink_wh(struct inode *h_dir, struct path *h_path)
+{
+	int err, force;
+	struct inode *delegated;
+
+	/*
+	 * forces superio when the dir has a sticky bit.
+	 * this may be a violation of unix fs semantics.
+	 */
+	force = (h_dir->i_mode & S_ISVTX)
+		&& !uid_eq(current_fsuid(), d_inode(h_path->dentry)->i_uid);
+	delegated = NULL;
+	err = vfsub_unlink(h_dir, h_path, &delegated, force);
+	if (unlikely(err == -EWOULDBLOCK)) {
+		pr_warn("cannot retry for NFSv4 delegation"
+			" for an internal unlink\n");
+		iput(delegated);
+	}
+	return err;
+}
+
+int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path,
+			struct dentry *dentry)
+{
+	int err;
+
+	err = do_unlink_wh(h_dir, h_path);
+	if (!err && dentry)
+		au_set_dbwh(dentry, -1);
+
+	return err;
+}
+
+static int unlink_wh_name(struct path *h_ppath, struct qstr *wh)
+{
+	int err;
+	struct path h_path;
+
+	err = 0;
+	h_path.dentry = vfsub_lkup_one(wh, h_ppath);
+	if (IS_ERR(h_path.dentry))
+		err = PTR_ERR(h_path.dentry);
+	else {
+		if (d_is_reg(h_path.dentry)) {
+			h_path.mnt = h_ppath->mnt;
+			err = do_unlink_wh(d_inode(h_ppath->dentry), &h_path);
+		}
+		dput(h_path.dentry);
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * initialize/clean whiteout for a branch
+ */
+
+static void au_wh_clean(struct inode *h_dir, struct path *whpath,
+			const int isdir)
+{
+	int err;
+	struct inode *delegated;
+
+	if (d_is_negative(whpath->dentry))
+		return;
+
+	if (isdir)
+		err = vfsub_rmdir(h_dir, whpath);
+	else {
+		delegated = NULL;
+		err = vfsub_unlink(h_dir, whpath, &delegated, /*force*/0);
+		if (unlikely(err == -EWOULDBLOCK)) {
+			pr_warn("cannot retry for NFSv4 delegation"
+				" for an internal unlink\n");
+			iput(delegated);
+		}
+	}
+	if (unlikely(err))
+		pr_warn("failed removing %pd (%d), ignored.\n",
+			whpath->dentry, err);
+}
+
+static int test_linkable(struct dentry *h_root)
+{
+	struct inode *h_dir = d_inode(h_root);
+
+	if (h_dir->i_op->link)
+		return 0;
+
+	pr_err("%pd (%s) doesn't support link(2), use noplink and rw+nolwh\n",
+	       h_root, au_sbtype(h_root->d_sb));
+	return -ENOSYS;	/* the branch doesn't have its ->link() */
+}
+
+/* todo: should this mkdir be done in /sbin/mount.aufs helper? */
+static int au_whdir(struct inode *h_dir, struct path *path)
+{
+	int err;
+
+	err = -EEXIST;
+	if (d_is_negative(path->dentry)) {
+		int mode = 0700;
+
+		if (au_test_nfs(path->dentry->d_sb))
+			mode |= 0111;
+		err = vfsub_mkdir(h_dir, path, mode);
+	} else if (d_is_dir(path->dentry))
+		err = 0;
+	else
+		pr_err("unknown %pd exists\n", path->dentry);
+
+	return err;
+}
+
+struct au_wh_base {
+	const struct qstr *name;
+	struct dentry *dentry;
+};
+
+static void au_wh_init_ro(struct inode *h_dir, struct au_wh_base base[],
+			  struct path *h_path)
+{
+	h_path->dentry = base[AuBrWh_BASE].dentry;
+	au_wh_clean(h_dir, h_path, /*isdir*/0);
+	h_path->dentry = base[AuBrWh_PLINK].dentry;
+	au_wh_clean(h_dir, h_path, /*isdir*/1);
+	h_path->dentry = base[AuBrWh_ORPH].dentry;
+	au_wh_clean(h_dir, h_path, /*isdir*/1);
+}
+
+/*
+ * returns tri-state,
+ * minus: error, caller should print the message
+ * zero: success
+ * plus: error, caller should NOT print the message
+ */
+static int au_wh_init_rw_nolink(struct dentry *h_root, struct au_wbr *wbr,
+				int do_plink, struct au_wh_base base[],
+				struct path *h_path)
+{
+	int err;
+	struct inode *h_dir;
+
+	h_dir = d_inode(h_root);
+	h_path->dentry = base[AuBrWh_BASE].dentry;
+	au_wh_clean(h_dir, h_path, /*isdir*/0);
+	h_path->dentry = base[AuBrWh_PLINK].dentry;
+	if (do_plink) {
+		err = test_linkable(h_root);
+		if (unlikely(err)) {
+			err = 1;
+			goto out;
+		}
+
+		err = au_whdir(h_dir, h_path);
+		if (unlikely(err))
+			goto out;
+		wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry);
+	} else
+		au_wh_clean(h_dir, h_path, /*isdir*/1);
+	h_path->dentry = base[AuBrWh_ORPH].dentry;
+	err = au_whdir(h_dir, h_path);
+	if (unlikely(err))
+		goto out;
+	wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry);
+
+out:
+	return err;
+}
+
+/*
+ * for the moment, aufs supports the branch filesystem which does not support
+ * link(2). testing on FAT which does not support i_op->setattr() fully either,
+ * copyup failed. finally, such filesystem will not be used as the writable
+ * branch.
+ *
+ * returns tri-state, see above.
+ */
+static int au_wh_init_rw(struct dentry *h_root, struct au_wbr *wbr,
+			 int do_plink, struct au_wh_base base[],
+			 struct path *h_path)
+{
+	int err;
+	struct inode *h_dir;
+
+	WbrWhMustWriteLock(wbr);
+
+	err = test_linkable(h_root);
+	if (unlikely(err)) {
+		err = 1;
+		goto out;
+	}
+
+	/*
+	 * todo: should this create be done in /sbin/mount.aufs helper?
+	 */
+	err = -EEXIST;
+	h_dir = d_inode(h_root);
+	if (d_is_negative(base[AuBrWh_BASE].dentry)) {
+		h_path->dentry = base[AuBrWh_BASE].dentry;
+		err = vfsub_create(h_dir, h_path, WH_MASK, /*want_excl*/true);
+	} else if (d_is_reg(base[AuBrWh_BASE].dentry))
+		err = 0;
+	else
+		pr_err("unknown %pd2 exists\n", base[AuBrWh_BASE].dentry);
+	if (unlikely(err))
+		goto out;
+
+	h_path->dentry = base[AuBrWh_PLINK].dentry;
+	if (do_plink) {
+		err = au_whdir(h_dir, h_path);
+		if (unlikely(err))
+			goto out;
+		wbr->wbr_plink = dget(base[AuBrWh_PLINK].dentry);
+	} else
+		au_wh_clean(h_dir, h_path, /*isdir*/1);
+	wbr->wbr_whbase = dget(base[AuBrWh_BASE].dentry);
+
+	h_path->dentry = base[AuBrWh_ORPH].dentry;
+	err = au_whdir(h_dir, h_path);
+	if (unlikely(err))
+		goto out;
+	wbr->wbr_orph = dget(base[AuBrWh_ORPH].dentry);
+
+out:
+	return err;
+}
+
+/*
+ * initialize the whiteout base file/dir for @br.
+ */
+int au_wh_init(struct au_branch *br, struct super_block *sb)
+{
+	int err, i;
+	const unsigned char do_plink
+		= !!au_opt_test(au_mntflags(sb), PLINK);
+	struct inode *h_dir;
+	struct path path = br->br_path;
+	struct dentry *h_root = path.dentry;
+	struct au_wbr *wbr = br->br_wbr;
+	static const struct qstr base_name[] = {
+		[AuBrWh_BASE] = QSTR_INIT(AUFS_BASE_NAME,
+					  sizeof(AUFS_BASE_NAME) - 1),
+		[AuBrWh_PLINK] = QSTR_INIT(AUFS_PLINKDIR_NAME,
+					   sizeof(AUFS_PLINKDIR_NAME) - 1),
+		[AuBrWh_ORPH] = QSTR_INIT(AUFS_ORPHDIR_NAME,
+					  sizeof(AUFS_ORPHDIR_NAME) - 1)
+	};
+	struct au_wh_base base[] = {
+		[AuBrWh_BASE] = {
+			.name	= base_name + AuBrWh_BASE,
+			.dentry	= NULL
+		},
+		[AuBrWh_PLINK] = {
+			.name	= base_name + AuBrWh_PLINK,
+			.dentry	= NULL
+		},
+		[AuBrWh_ORPH] = {
+			.name	= base_name + AuBrWh_ORPH,
+			.dentry	= NULL
+		}
+	};
+
+	if (wbr)
+		WbrWhMustWriteLock(wbr);
+
+	for (i = 0; i < AuBrWh_Last; i++) {
+		/* doubly whiteouted */
+		struct dentry *d;
+
+		d = au_wh_lkup(h_root, (void *)base[i].name, br);
+		err = PTR_ERR(d);
+		if (IS_ERR(d))
+			goto out;
+
+		base[i].dentry = d;
+		AuDebugOn(wbr
+			  && wbr->wbr_wh[i]
+			  && wbr->wbr_wh[i] != base[i].dentry);
+	}
+
+	if (wbr)
+		for (i = 0; i < AuBrWh_Last; i++) {
+			dput(wbr->wbr_wh[i]);
+			wbr->wbr_wh[i] = NULL;
+		}
+
+	err = 0;
+	if (!au_br_writable(br->br_perm)) {
+		h_dir = d_inode(h_root);
+		au_wh_init_ro(h_dir, base, &path);
+	} else if (!au_br_wh_linkable(br->br_perm)) {
+		err = au_wh_init_rw_nolink(h_root, wbr, do_plink, base, &path);
+		if (err > 0)
+			goto out;
+		else if (err)
+			goto out_err;
+	} else {
+		err = au_wh_init_rw(h_root, wbr, do_plink, base, &path);
+		if (err > 0)
+			goto out;
+		else if (err)
+			goto out_err;
+	}
+	goto out; /* success */
+
+out_err:
+	pr_err("an error(%d) on the writable branch %pd(%s)\n",
+	       err, h_root, au_sbtype(h_root->d_sb));
+out:
+	for (i = 0; i < AuBrWh_Last; i++)
+		dput(base[i].dentry);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+/*
+ * whiteouts are all hard-linked usually.
+ * when its link count reaches a ceiling, we create a new whiteout base
+ * asynchronously.
+ */
+
+struct reinit_br_wh {
+	struct super_block *sb;
+	struct au_branch *br;
+};
+
+static void reinit_br_wh(void *arg)
+{
+	int err;
+	aufs_bindex_t bindex;
+	struct path h_path;
+	struct reinit_br_wh *a = arg;
+	struct au_wbr *wbr;
+	struct inode *dir, *delegated;
+	struct dentry *h_root;
+	struct au_hinode *hdir;
+
+	err = 0;
+	wbr = a->br->br_wbr;
+	/* big aufs lock */
+	si_noflush_write_lock(a->sb);
+	if (!au_br_writable(a->br->br_perm))
+		goto out;
+	bindex = au_br_index(a->sb, a->br->br_id);
+	if (unlikely(bindex < 0))
+		goto out;
+
+	di_read_lock_parent(a->sb->s_root, AuLock_IR);
+	dir = d_inode(a->sb->s_root);
+	hdir = au_hi(dir, bindex);
+	h_root = au_h_dptr(a->sb->s_root, bindex);
+	AuDebugOn(h_root != au_br_dentry(a->br));
+
+	au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+	wbr_wh_write_lock(wbr);
+	err = au_h_verify(wbr->wbr_whbase, au_opt_udba(a->sb), hdir->hi_inode,
+			  h_root, a->br);
+	if (!err) {
+		h_path.dentry = wbr->wbr_whbase;
+		h_path.mnt = au_br_mnt(a->br);
+		delegated = NULL;
+		err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated,
+				   /*force*/0);
+		if (unlikely(err == -EWOULDBLOCK)) {
+			pr_warn("cannot retry for NFSv4 delegation"
+				" for an internal unlink\n");
+			iput(delegated);
+		}
+	} else {
+		pr_warn("%pd is moved, ignored\n", wbr->wbr_whbase);
+		err = 0;
+	}
+	dput(wbr->wbr_whbase);
+	wbr->wbr_whbase = NULL;
+	if (!err)
+		err = au_wh_init(a->br, a->sb);
+	wbr_wh_write_unlock(wbr);
+	au_hn_inode_unlock(hdir);
+	di_read_unlock(a->sb->s_root, AuLock_IR);
+	if (!err)
+		au_fhsm_wrote(a->sb, bindex, /*force*/0);
+
+out:
+	if (wbr)
+		atomic_dec(&wbr->wbr_wh_running);
+	au_lcnt_dec(&a->br->br_count);
+	si_write_unlock(a->sb);
+	au_nwt_done(&au_sbi(a->sb)->si_nowait);
+	au_kfree_rcu(a);
+	if (unlikely(err))
+		AuIOErr("err %d\n", err);
+}
+
+static void kick_reinit_br_wh(struct super_block *sb, struct au_branch *br)
+{
+	int do_dec, wkq_err;
+	struct reinit_br_wh *arg;
+
+	do_dec = 1;
+	if (atomic_inc_return(&br->br_wbr->wbr_wh_running) != 1)
+		goto out;
+
+	/* ignore ENOMEM */
+	arg = kmalloc(sizeof(*arg), GFP_NOFS);
+	if (arg) {
+		/*
+		 * dec(wh_running), kfree(arg) and dec(br_count)
+		 * in reinit function
+		 */
+		arg->sb = sb;
+		arg->br = br;
+		au_lcnt_inc(&br->br_count);
+		wkq_err = au_wkq_nowait(reinit_br_wh, arg, sb, /*flags*/0);
+		if (unlikely(wkq_err)) {
+			atomic_dec(&br->br_wbr->wbr_wh_running);
+			au_lcnt_dec(&br->br_count);
+			au_kfree_rcu(arg);
+		}
+		do_dec = 0;
+	}
+
+out:
+	if (do_dec)
+		atomic_dec(&br->br_wbr->wbr_wh_running);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * create the whiteout @wh.
+ */
+static int link_or_create_wh(struct super_block *sb, aufs_bindex_t bindex,
+			     struct dentry *wh)
+{
+	int err;
+	struct path h_path = {
+		.dentry = wh
+	};
+	struct au_branch *br;
+	struct au_wbr *wbr;
+	struct dentry *h_parent;
+	struct inode *h_dir, *delegated;
+
+	h_parent = wh->d_parent; /* dir inode is locked */
+	h_dir = d_inode(h_parent);
+	IMustLock(h_dir);
+
+	br = au_sbr(sb, bindex);
+	h_path.mnt = au_br_mnt(br);
+	wbr = br->br_wbr;
+	wbr_wh_read_lock(wbr);
+	if (wbr->wbr_whbase) {
+		delegated = NULL;
+		err = vfsub_link(wbr->wbr_whbase, h_dir, &h_path, &delegated);
+		if (unlikely(err == -EWOULDBLOCK)) {
+			pr_warn("cannot retry for NFSv4 delegation"
+				" for an internal link\n");
+			iput(delegated);
+		}
+		if (!err || err != -EMLINK)
+			goto out;
+
+		/* link count full. re-initialize br_whbase. */
+		kick_reinit_br_wh(sb, br);
+	}
+
+	/* return this error in this context */
+	err = vfsub_create(h_dir, &h_path, WH_MASK, /*want_excl*/true);
+	if (!err)
+		au_fhsm_wrote(sb, bindex, /*force*/0);
+
+out:
+	wbr_wh_read_unlock(wbr);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * create or remove the diropq.
+ */
+static struct dentry *do_diropq(struct dentry *dentry, aufs_bindex_t bindex,
+				unsigned int flags)
+{
+	struct dentry *opq_dentry;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct path h_path;
+	int err;
+
+	sb = dentry->d_sb;
+	br = au_sbr(sb, bindex);
+	h_path.dentry = au_h_dptr(dentry, bindex);
+	h_path.mnt = au_br_mnt(br);
+	opq_dentry = vfsub_lkup_one(&diropq_name, &h_path);
+	if (IS_ERR(opq_dentry))
+		goto out;
+
+	if (au_ftest_diropq(flags, CREATE)) {
+		err = link_or_create_wh(sb, bindex, opq_dentry);
+		if (!err) {
+			au_set_dbdiropq(dentry, bindex);
+			goto out; /* success */
+		}
+	} else {
+		h_path.dentry = opq_dentry;
+		err = do_unlink_wh(au_h_iptr(d_inode(dentry), bindex), &h_path);
+		if (!err)
+			au_set_dbdiropq(dentry, -1);
+	}
+	dput(opq_dentry);
+	opq_dentry = ERR_PTR(err);
+
+out:
+	return opq_dentry;
+}
+
+struct do_diropq_args {
+	struct dentry **errp;
+	struct dentry *dentry;
+	aufs_bindex_t bindex;
+	unsigned int flags;
+};
+
+static void call_do_diropq(void *args)
+{
+	struct do_diropq_args *a = args;
+	*a->errp = do_diropq(a->dentry, a->bindex, a->flags);
+}
+
+struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex,
+			     unsigned int flags)
+{
+	struct dentry *diropq, *h_dentry;
+	struct user_namespace *h_userns;
+
+	h_userns = au_sbr_userns(dentry->d_sb, bindex);
+	h_dentry = au_h_dptr(dentry, bindex);
+	if (!au_test_h_perm_sio(h_userns, d_inode(h_dentry),
+				MAY_EXEC | MAY_WRITE))
+		diropq = do_diropq(dentry, bindex, flags);
+	else {
+		int wkq_err;
+		struct do_diropq_args args = {
+			.errp		= &diropq,
+			.dentry		= dentry,
+			.bindex		= bindex,
+			.flags		= flags
+		};
+
+		wkq_err = au_wkq_wait(call_do_diropq, &args);
+		if (unlikely(wkq_err))
+			diropq = ERR_PTR(wkq_err);
+	}
+
+	return diropq;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * lookup whiteout dentry.
+ * @h_parent: lower parent dentry which must exist and be locked
+ * @base_name: name of dentry which will be whiteouted
+ * returns dentry for whiteout.
+ */
+struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name,
+			  struct au_branch *br)
+{
+	int err;
+	struct qstr wh_name;
+	struct dentry *wh_dentry;
+	struct path h_path;
+
+	err = au_wh_name_alloc(&wh_name, base_name);
+	wh_dentry = ERR_PTR(err);
+	if (!err) {
+		h_path.dentry = h_parent;
+		h_path.mnt = au_br_mnt(br);
+		wh_dentry = vfsub_lkup_one(&wh_name, &h_path);
+		au_kfree_try_rcu(wh_name.name);
+	}
+	return wh_dentry;
+}
+
+/*
+ * link/create a whiteout for @dentry on @bindex.
+ */
+struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex,
+			    struct dentry *h_parent)
+{
+	struct dentry *wh_dentry;
+	struct super_block *sb;
+	int err;
+
+	sb = dentry->d_sb;
+	wh_dentry = au_wh_lkup(h_parent, &dentry->d_name, au_sbr(sb, bindex));
+	if (!IS_ERR(wh_dentry) && d_is_negative(wh_dentry)) {
+		err = link_or_create_wh(sb, bindex, wh_dentry);
+		if (!err) {
+			au_set_dbwh(dentry, bindex);
+			au_fhsm_wrote(sb, bindex, /*force*/0);
+		} else {
+			dput(wh_dentry);
+			wh_dentry = ERR_PTR(err);
+		}
+	}
+
+	return wh_dentry;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* Delete all whiteouts in this directory on branch bindex. */
+static int del_wh_children(struct path *h_path, struct au_nhash *whlist,
+			   aufs_bindex_t bindex)
+{
+	int err;
+	unsigned long ul, n;
+	struct qstr wh_name;
+	char *p;
+	struct hlist_head *head;
+	struct au_vdir_wh *pos;
+	struct au_vdir_destr *str;
+
+	err = -ENOMEM;
+	p = (void *)__get_free_page(GFP_NOFS);
+	wh_name.name = p;
+	if (unlikely(!wh_name.name))
+		goto out;
+
+	err = 0;
+	memcpy(p, AUFS_WH_PFX, AUFS_WH_PFX_LEN);
+	p += AUFS_WH_PFX_LEN;
+	n = whlist->nh_num;
+	head = whlist->nh_head;
+	for (ul = 0; !err && ul < n; ul++, head++) {
+		hlist_for_each_entry(pos, head, wh_hash) {
+			if (pos->wh_bindex != bindex)
+				continue;
+
+			str = &pos->wh_str;
+			if (str->len + AUFS_WH_PFX_LEN <= PATH_MAX) {
+				memcpy(p, str->name, str->len);
+				wh_name.len = AUFS_WH_PFX_LEN + str->len;
+				err = unlink_wh_name(h_path, &wh_name);
+				if (!err)
+					continue;
+				break;
+			}
+			AuIOErr("whiteout name too long %.*s\n",
+				str->len, str->name);
+			err = -EIO;
+			break;
+		}
+	}
+	free_page((unsigned long)wh_name.name);
+
+out:
+	return err;
+}
+
+struct del_wh_children_args {
+	int *errp;
+	struct path *h_path;
+	struct au_nhash *whlist;
+	aufs_bindex_t bindex;
+};
+
+static void call_del_wh_children(void *args)
+{
+	struct del_wh_children_args *a = args;
+	*a->errp = del_wh_children(a->h_path, a->whlist, a->bindex);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp)
+{
+	struct au_whtmp_rmdir *whtmp;
+	int err;
+	unsigned int rdhash;
+
+	SiMustAnyLock(sb);
+
+	whtmp = kzalloc(sizeof(*whtmp), gfp);
+	if (unlikely(!whtmp)) {
+		whtmp = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+
+	/* no estimation for dir size */
+	rdhash = au_sbi(sb)->si_rdhash;
+	if (!rdhash)
+		rdhash = AUFS_RDHASH_DEF;
+	err = au_nhash_alloc(&whtmp->whlist, rdhash, gfp);
+	if (unlikely(err)) {
+		au_kfree_rcu(whtmp);
+		whtmp = ERR_PTR(err);
+	}
+
+out:
+	return whtmp;
+}
+
+void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp)
+{
+	if (whtmp->br)
+		au_lcnt_dec(&whtmp->br->br_count);
+	dput(whtmp->wh_dentry);
+	iput(whtmp->dir);
+	au_nhash_wh_free(&whtmp->whlist);
+	au_kfree_rcu(whtmp);
+}
+
+/*
+ * rmdir the whiteouted temporary named dir @h_dentry.
+ * @whlist: whiteouted children.
+ */
+int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex,
+		   struct dentry *wh_dentry, struct au_nhash *whlist)
+{
+	int err;
+	unsigned int h_nlink;
+	struct path wh_path;
+	struct inode *wh_inode, *h_dir;
+	struct au_branch *br;
+	struct user_namespace *h_userns;
+
+	h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */
+	IMustLock(h_dir);
+
+	br = au_sbr(dir->i_sb, bindex);
+	wh_path.dentry = wh_dentry;
+	wh_path.mnt = au_br_mnt(br);
+	h_userns = au_br_userns(br);
+	wh_inode = d_inode(wh_dentry);
+	inode_lock_nested(wh_inode, AuLsc_I_CHILD);
+
+	/*
+	 * someone else might change some whiteouts while we were sleeping.
+	 * it means this whlist may have an obsoleted entry.
+	 */
+	if (!au_test_h_perm_sio(h_userns, wh_inode, MAY_EXEC | MAY_WRITE))
+		err = del_wh_children(&wh_path, whlist, bindex);
+	else {
+		int wkq_err;
+		struct del_wh_children_args args = {
+			.errp		= &err,
+			.h_path		= &wh_path,
+			.whlist		= whlist,
+			.bindex		= bindex
+		};
+
+		wkq_err = au_wkq_wait(call_del_wh_children, &args);
+		if (unlikely(wkq_err))
+			err = wkq_err;
+	}
+	inode_unlock(wh_inode);
+
+	if (!err) {
+		h_nlink = h_dir->i_nlink;
+		err = vfsub_rmdir(h_dir, &wh_path);
+		/* some fs doesn't change the parent nlink in some cases */
+		h_nlink -= h_dir->i_nlink;
+	}
+
+	if (!err) {
+		if (au_ibtop(dir) == bindex) {
+			/* todo: dir->i_mutex is necessary */
+			au_cpup_attr_timesizes(dir);
+			if (h_nlink)
+				vfsub_drop_nlink(dir);
+		}
+		return 0; /* success */
+	}
+
+	pr_warn("failed removing %pd(%d), ignored\n", wh_dentry, err);
+	return err;
+}
+
+static void call_rmdir_whtmp(void *args)
+{
+	int err;
+	aufs_bindex_t bindex;
+	struct au_whtmp_rmdir *a = args;
+	struct super_block *sb;
+	struct dentry *h_parent;
+	struct inode *h_dir;
+	struct au_hinode *hdir;
+
+	/* rmdir by nfsd may cause deadlock with this i_mutex */
+	/* inode_lock(a->dir); */
+	err = -EROFS;
+	sb = a->dir->i_sb;
+	si_read_lock(sb, !AuLock_FLUSH);
+	if (!au_br_writable(a->br->br_perm))
+		goto out;
+	bindex = au_br_index(sb, a->br->br_id);
+	if (unlikely(bindex < 0))
+		goto out;
+
+	err = -EIO;
+	ii_write_lock_parent(a->dir);
+	h_parent = dget_parent(a->wh_dentry);
+	h_dir = d_inode(h_parent);
+	hdir = au_hi(a->dir, bindex);
+	err = vfsub_mnt_want_write(au_br_mnt(a->br));
+	if (unlikely(err))
+		goto out_mnt;
+	au_hn_inode_lock_nested(hdir, AuLsc_I_PARENT);
+	err = au_h_verify(a->wh_dentry, au_opt_udba(sb), h_dir, h_parent,
+			  a->br);
+	if (!err)
+		err = au_whtmp_rmdir(a->dir, bindex, a->wh_dentry, &a->whlist);
+	au_hn_inode_unlock(hdir);
+	vfsub_mnt_drop_write(au_br_mnt(a->br));
+
+out_mnt:
+	dput(h_parent);
+	ii_write_unlock(a->dir);
+out:
+	/* inode_unlock(a->dir); */
+	au_whtmp_rmdir_free(a);
+	si_read_unlock(sb);
+	au_nwt_done(&au_sbi(sb)->si_nowait);
+	if (unlikely(err))
+		AuIOErr("err %d\n", err);
+}
+
+void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex,
+			 struct dentry *wh_dentry, struct au_whtmp_rmdir *args)
+{
+	int wkq_err;
+	struct super_block *sb;
+
+	IMustLock(dir);
+
+	/* all post-process will be done in do_rmdir_whtmp(). */
+	sb = dir->i_sb;
+	args->dir = au_igrab(dir);
+	args->br = au_sbr(sb, bindex);
+	au_lcnt_inc(&args->br->br_count);
+	args->wh_dentry = dget(wh_dentry);
+	wkq_err = au_wkq_nowait(call_rmdir_whtmp, args, sb, /*flags*/0);
+	if (unlikely(wkq_err)) {
+		pr_warn("rmdir error %pd (%d), ignored\n", wh_dentry, wkq_err);
+		au_whtmp_rmdir_free(args);
+	}
+}
diff -Naur --no-dereference a/fs/aufs/whout.h b/fs/aufs/whout.h
--- a/fs/aufs/whout.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/whout.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * whiteout for logical deletion and opaque directory
+ */
+
+#ifndef __AUFS_WHOUT_H__
+#define __AUFS_WHOUT_H__
+
+#ifdef __KERNEL__
+
+#include "dir.h"
+
+/* whout.c */
+int au_wh_name_alloc(struct qstr *wh, const struct qstr *name);
+int au_wh_test(struct user_namespace *h_userns, struct path *h_ppath,
+	       struct qstr *wh_name, int try_sio);
+int au_diropq_test(struct user_namespace *h_userns, struct path *h_path);
+struct au_branch;
+struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br,
+			     struct qstr *prefix);
+int au_whtmp_ren(struct dentry *h_dentry, struct au_branch *br);
+int au_wh_unlink_dentry(struct inode *h_dir, struct path *h_path,
+			struct dentry *dentry);
+int au_wh_init(struct au_branch *br, struct super_block *sb);
+
+/* diropq flags */
+#define AuDiropq_CREATE	1
+#define au_ftest_diropq(flags, name)	((flags) & AuDiropq_##name)
+#define au_fset_diropq(flags, name) \
+	do { (flags) |= AuDiropq_##name; } while (0)
+#define au_fclr_diropq(flags, name) \
+	do { (flags) &= ~AuDiropq_##name; } while (0)
+
+struct dentry *au_diropq_sio(struct dentry *dentry, aufs_bindex_t bindex,
+			     unsigned int flags);
+struct dentry *au_wh_lkup(struct dentry *h_parent, struct qstr *base_name,
+			  struct au_branch *br);
+struct dentry *au_wh_create(struct dentry *dentry, aufs_bindex_t bindex,
+			    struct dentry *h_parent);
+
+/* real rmdir for the whiteout-ed dir */
+struct au_whtmp_rmdir {
+	struct inode *dir;
+	struct au_branch *br;
+	struct dentry *wh_dentry;
+	struct au_nhash whlist;
+};
+
+struct au_whtmp_rmdir *au_whtmp_rmdir_alloc(struct super_block *sb, gfp_t gfp);
+void au_whtmp_rmdir_free(struct au_whtmp_rmdir *whtmp);
+int au_whtmp_rmdir(struct inode *dir, aufs_bindex_t bindex,
+		   struct dentry *wh_dentry, struct au_nhash *whlist);
+void au_whtmp_kick_rmdir(struct inode *dir, aufs_bindex_t bindex,
+			 struct dentry *wh_dentry, struct au_whtmp_rmdir *args);
+
+/* ---------------------------------------------------------------------- */
+
+static inline struct dentry *au_diropq_create(struct dentry *dentry,
+					      aufs_bindex_t bindex)
+{
+	return au_diropq_sio(dentry, bindex, AuDiropq_CREATE);
+}
+
+static inline int au_diropq_remove(struct dentry *dentry, aufs_bindex_t bindex)
+{
+	return PTR_ERR(au_diropq_sio(dentry, bindex, !AuDiropq_CREATE));
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_WHOUT_H__ */
diff -Naur --no-dereference a/fs/aufs/wkq.c b/fs/aufs/wkq.c
--- a/fs/aufs/wkq.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/wkq.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,372 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * workqueue for asynchronous/super-io operations
+ * todo: try new credential scheme
+ */
+
+#include <linux/module.h>
+#include "aufs.h"
+
+/* internal workqueue named AUFS_WKQ_NAME */
+
+static struct workqueue_struct *au_wkq;
+
+struct au_wkinfo {
+	struct work_struct wk;
+	struct kobject *kobj;
+
+	unsigned int flags; /* see wkq.h */
+
+	au_wkq_func_t func;
+	void *args;
+
+#ifdef CONFIG_LOCKDEP
+	int dont_check;
+	struct held_lock **hlock;
+#endif
+
+	struct completion *comp;
+};
+
+/* ---------------------------------------------------------------------- */
+/*
+ * Aufs passes some operations to the workqueue such as the internal copyup.
+ * This scheme looks rather unnatural for LOCKDEP debugging feature, since the
+ * job run by workqueue depends upon the locks acquired in the other task.
+ * Delegating a small operation to the workqueue, aufs passes its lockdep
+ * information too. And the job in the workqueue restores the info in order to
+ * pretend as if it acquired those locks. This is just to make LOCKDEP work
+ * correctly and expectedly.
+ */
+
+#ifndef CONFIG_LOCKDEP
+AuStubInt0(au_wkq_lockdep_alloc, struct au_wkinfo *wkinfo);
+AuStubVoid(au_wkq_lockdep_free, struct au_wkinfo *wkinfo);
+AuStubVoid(au_wkq_lockdep_pre, struct au_wkinfo *wkinfo);
+AuStubVoid(au_wkq_lockdep_post, struct au_wkinfo *wkinfo);
+AuStubVoid(au_wkq_lockdep_init, struct au_wkinfo *wkinfo);
+#else
+static void au_wkq_lockdep_init(struct au_wkinfo *wkinfo)
+{
+	wkinfo->hlock = NULL;
+	wkinfo->dont_check = 0;
+}
+
+/*
+ * 1: matched
+ * 0: unmatched
+ */
+static int au_wkq_lockdep_test(struct lock_class_key *key, const char *name)
+{
+	static DEFINE_SPINLOCK(spin);
+	static struct {
+		char *name;
+		struct lock_class_key *key;
+	} a[] = {
+		{ .name = "&sbinfo->si_rwsem" },
+		{ .name = "&finfo->fi_rwsem" },
+		{ .name = "&dinfo->di_rwsem" },
+		{ .name = "&iinfo->ii_rwsem" }
+	};
+	static int set;
+	int i;
+
+	/* lockless read from 'set.' see below */
+	if (set == ARRAY_SIZE(a)) {
+		for (i = 0; i < ARRAY_SIZE(a); i++)
+			if (a[i].key == key)
+				goto match;
+		goto unmatch;
+	}
+
+	spin_lock(&spin);
+	if (set)
+		for (i = 0; i < ARRAY_SIZE(a); i++)
+			if (a[i].key == key) {
+				spin_unlock(&spin);
+				goto match;
+			}
+	for (i = 0; i < ARRAY_SIZE(a); i++) {
+		if (a[i].key) {
+			if (unlikely(a[i].key == key)) { /* rare but possible */
+				spin_unlock(&spin);
+				goto match;
+			} else
+				continue;
+		}
+		if (strstr(a[i].name, name)) {
+			/*
+			 * the order of these three lines is important for the
+			 * lockless read above.
+			 */
+			a[i].key = key;
+			spin_unlock(&spin);
+			set++;
+			/* AuDbg("%d, %s\n", set, name); */
+			goto match;
+		}
+	}
+	spin_unlock(&spin);
+	goto unmatch;
+
+match:
+	return 1;
+unmatch:
+	return 0;
+}
+
+static int au_wkq_lockdep_alloc(struct au_wkinfo *wkinfo)
+{
+	int err, n;
+	struct task_struct *curr;
+	struct held_lock **hl, *held_locks, *p;
+
+	err = 0;
+	curr = current;
+	wkinfo->dont_check = lockdep_recursing(curr);
+	if (wkinfo->dont_check)
+		goto out;
+	n = curr->lockdep_depth;
+	if (!n)
+		goto out;
+
+	err = -ENOMEM;
+	wkinfo->hlock = kmalloc_array(n + 1, sizeof(*wkinfo->hlock), GFP_NOFS);
+	if (unlikely(!wkinfo->hlock))
+		goto out;
+
+	err = 0;
+#if 0 /* left for debugging */
+	if (0 && au_debug_test())
+		lockdep_print_held_locks(curr);
+#endif
+	held_locks = curr->held_locks;
+	hl = wkinfo->hlock;
+	while (n--) {
+		p = held_locks++;
+		if (au_wkq_lockdep_test(p->instance->key, p->instance->name))
+			*hl++ = p;
+	}
+	*hl = NULL;
+
+out:
+	return err;
+}
+
+static void au_wkq_lockdep_free(struct au_wkinfo *wkinfo)
+{
+	au_kfree_try_rcu(wkinfo->hlock);
+}
+
+static void au_wkq_lockdep_pre(struct au_wkinfo *wkinfo)
+{
+	struct held_lock *p, **hl = wkinfo->hlock;
+	int subclass;
+
+	if (wkinfo->dont_check)
+		lockdep_off();
+	if (!hl)
+		return;
+	while ((p = *hl++)) { /* assignment */
+		subclass = lockdep_hlock_class(p)->subclass;
+		/* AuDbg("%s, %d\n", p->instance->name, subclass); */
+		if (p->read)
+			rwsem_acquire_read(p->instance, subclass, 0,
+					   /*p->acquire_ip*/_RET_IP_);
+		else
+			rwsem_acquire(p->instance, subclass, 0,
+				      /*p->acquire_ip*/_RET_IP_);
+	}
+}
+
+static void au_wkq_lockdep_post(struct au_wkinfo *wkinfo)
+{
+	struct held_lock *p, **hl = wkinfo->hlock;
+
+	if (wkinfo->dont_check)
+		lockdep_on();
+	if (!hl)
+		return;
+	while ((p = *hl++)) /* assignment */
+		rwsem_release(p->instance, /*p->acquire_ip*/_RET_IP_);
+}
+#endif
+
+static void wkq_func(struct work_struct *wk)
+{
+	struct au_wkinfo *wkinfo = container_of(wk, struct au_wkinfo, wk);
+
+	AuDebugOn(!uid_eq(current_fsuid(), GLOBAL_ROOT_UID));
+	AuDebugOn(rlimit(RLIMIT_FSIZE) != RLIM_INFINITY);
+
+	au_wkq_lockdep_pre(wkinfo);
+	wkinfo->func(wkinfo->args);
+	au_wkq_lockdep_post(wkinfo);
+	if (au_ftest_wkq(wkinfo->flags, WAIT))
+		complete(wkinfo->comp);
+	else {
+		kobject_put(wkinfo->kobj);
+		module_put(THIS_MODULE); /* todo: ?? */
+		au_kfree_rcu(wkinfo);
+	}
+}
+
+/*
+ * Since struct completion is large, try allocating it dynamically.
+ */
+#define AuWkqCompDeclare(name)	struct completion *comp = NULL
+
+static int au_wkq_comp_alloc(struct au_wkinfo *wkinfo, struct completion **comp)
+{
+	*comp = kmalloc(sizeof(**comp), GFP_NOFS);
+	if (*comp) {
+		init_completion(*comp);
+		wkinfo->comp = *comp;
+		return 0;
+	}
+	return -ENOMEM;
+}
+
+static void au_wkq_comp_free(struct completion *comp)
+{
+	au_kfree_rcu(comp);
+}
+
+static void au_wkq_run(struct au_wkinfo *wkinfo)
+{
+	if (au_ftest_wkq(wkinfo->flags, NEST)) {
+		if (au_wkq_test()) {
+			AuWarn1("wkq from wkq, unless silly-rename on NFS,"
+				" due to a dead dir by UDBA,"
+				" or async xino write?\n");
+			AuDebugOn(au_ftest_wkq(wkinfo->flags, WAIT));
+		}
+	} else
+		au_dbg_verify_kthread();
+
+	if (au_ftest_wkq(wkinfo->flags, WAIT)) {
+		INIT_WORK_ONSTACK(&wkinfo->wk, wkq_func);
+		queue_work(au_wkq, &wkinfo->wk);
+	} else {
+		INIT_WORK(&wkinfo->wk, wkq_func);
+		schedule_work(&wkinfo->wk);
+	}
+}
+
+/*
+ * Be careful. It is easy to make deadlock happen.
+ * processA: lock, wkq and wait
+ * processB: wkq and wait, lock in wkq
+ * --> deadlock
+ */
+int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args)
+{
+	int err;
+	AuWkqCompDeclare(comp);
+	struct au_wkinfo wkinfo = {
+		.flags	= flags,
+		.func	= func,
+		.args	= args
+	};
+
+	err = au_wkq_comp_alloc(&wkinfo, &comp);
+	if (unlikely(err))
+		goto out;
+	err = au_wkq_lockdep_alloc(&wkinfo);
+	if (unlikely(err))
+		goto out_comp;
+	if (!err) {
+		au_wkq_run(&wkinfo);
+		/* no timeout, no interrupt */
+		wait_for_completion(wkinfo.comp);
+	}
+	au_wkq_lockdep_free(&wkinfo);
+
+out_comp:
+	au_wkq_comp_free(comp);
+out:
+	destroy_work_on_stack(&wkinfo.wk);
+	return err;
+}
+
+/*
+ * Note: dget/dput() in func for aufs dentries are not supported. It will be a
+ * problem in a concurrent umounting.
+ */
+int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb,
+		  unsigned int flags)
+{
+	int err;
+	struct au_wkinfo *wkinfo;
+
+	atomic_inc(&au_sbi(sb)->si_nowait.nw_len);
+
+	/*
+	 * wkq_func() must free this wkinfo.
+	 * it highly depends upon the implementation of workqueue.
+	 */
+	err = 0;
+	wkinfo = kmalloc(sizeof(*wkinfo), GFP_NOFS);
+	if (wkinfo) {
+		wkinfo->kobj = &au_sbi(sb)->si_kobj;
+		wkinfo->flags = flags & ~AuWkq_WAIT;
+		wkinfo->func = func;
+		wkinfo->args = args;
+		wkinfo->comp = NULL;
+		au_wkq_lockdep_init(wkinfo);
+		kobject_get(wkinfo->kobj);
+		__module_get(THIS_MODULE); /* todo: ?? */
+
+		au_wkq_run(wkinfo);
+	} else {
+		err = -ENOMEM;
+		au_nwt_done(&au_sbi(sb)->si_nowait);
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+void au_nwt_init(struct au_nowait_tasks *nwt)
+{
+	atomic_set(&nwt->nw_len, 0);
+	/* smp_mb(); */ /* atomic_set */
+	init_waitqueue_head(&nwt->nw_wq);
+}
+
+void au_wkq_fin(void)
+{
+	destroy_workqueue(au_wkq);
+}
+
+int __init au_wkq_init(void)
+{
+	int err;
+
+	err = 0;
+	au_wkq = alloc_workqueue(AUFS_WKQ_NAME, 0, WQ_DFL_ACTIVE);
+	if (IS_ERR(au_wkq))
+		err = PTR_ERR(au_wkq);
+	else if (!au_wkq)
+		err = -ENOMEM;
+
+	return err;
+}
diff -Naur --no-dereference a/fs/aufs/wkq.h b/fs/aufs/wkq.h
--- a/fs/aufs/wkq.h	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/wkq.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * workqueue for asynchronous/super-io operations
+ * todo: try new credentials management scheme
+ */
+
+#ifndef __AUFS_WKQ_H__
+#define __AUFS_WKQ_H__
+
+#ifdef __KERNEL__
+
+#include <linux/wait.h>
+
+struct super_block;
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * in the next operation, wait for the 'nowait' tasks in system-wide workqueue
+ */
+struct au_nowait_tasks {
+	atomic_t		nw_len;
+	wait_queue_head_t	nw_wq;
+};
+
+/* ---------------------------------------------------------------------- */
+
+typedef void (*au_wkq_func_t)(void *args);
+
+/* wkq flags */
+#define AuWkq_WAIT	1
+#define AuWkq_NEST	(1 << 1)
+#define au_ftest_wkq(flags, name)	((flags) & AuWkq_##name)
+#define au_fset_wkq(flags, name) \
+	do { (flags) |= AuWkq_##name; } while (0)
+#define au_fclr_wkq(flags, name) \
+	do { (flags) &= ~AuWkq_##name; } while (0)
+
+/* wkq.c */
+int au_wkq_do_wait(unsigned int flags, au_wkq_func_t func, void *args);
+int au_wkq_nowait(au_wkq_func_t func, void *args, struct super_block *sb,
+		  unsigned int flags);
+void au_nwt_init(struct au_nowait_tasks *nwt);
+int __init au_wkq_init(void);
+void au_wkq_fin(void);
+
+/* ---------------------------------------------------------------------- */
+
+static inline int au_wkq_test(void)
+{
+	return current->flags & PF_WQ_WORKER;
+}
+
+static inline int au_wkq_wait(au_wkq_func_t func, void *args)
+{
+	return au_wkq_do_wait(AuWkq_WAIT, func, args);
+}
+
+static inline void au_nwt_done(struct au_nowait_tasks *nwt)
+{
+	if (atomic_dec_and_test(&nwt->nw_len))
+		wake_up_all(&nwt->nw_wq);
+}
+
+static inline int au_nwt_flush(struct au_nowait_tasks *nwt)
+{
+	wait_event(nwt->nw_wq, !atomic_read(&nwt->nw_len));
+	return 0;
+}
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_WKQ_H__ */
diff -Naur --no-dereference a/fs/aufs/xattr.c b/fs/aufs/xattr.c
--- a/fs/aufs/xattr.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/xattr.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2014-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * handling xattr functions
+ */
+
+#include <linux/fs.h>
+#include <linux/posix_acl_xattr.h>
+#include <linux/xattr.h>
+#include "aufs.h"
+
+static int au_xattr_ignore(int err, char *name, unsigned int ignore_flags)
+{
+	if (!ignore_flags)
+		goto out;
+	switch (err) {
+	case -ENOMEM:
+	case -EDQUOT:
+		goto out;
+	}
+
+	if ((ignore_flags & AuBrAttr_ICEX) == AuBrAttr_ICEX) {
+		err = 0;
+		goto out;
+	}
+
+#define cmp(brattr, prefix) do {					\
+		if (!strncmp(name, XATTR_##prefix##_PREFIX,		\
+			     XATTR_##prefix##_PREFIX_LEN)) {		\
+			if (ignore_flags & AuBrAttr_ICEX_##brattr)	\
+				err = 0;				\
+			goto out;					\
+		}							\
+	} while (0)
+
+	cmp(SEC, SECURITY);
+	cmp(SYS, SYSTEM);
+	cmp(TR, TRUSTED);
+	cmp(USR, USER);
+#undef cmp
+
+	if (ignore_flags & AuBrAttr_ICEX_OTH)
+		err = 0;
+
+out:
+	return err;
+}
+
+static const int au_xattr_out_of_list = AuBrAttr_ICEX_OTH << 1;
+
+static int au_do_cpup_xattr(struct path *h_dst, struct path *h_src,
+			    char *name, char **buf, unsigned int ignore_flags,
+			    unsigned int verbose)
+{
+	int err;
+	ssize_t ssz;
+	struct inode *h_idst;
+	struct dentry *h_dst_dentry, *h_src_dentry;
+	struct user_namespace *h_dst_userns, *h_src_userns;
+
+	h_src_userns = mnt_user_ns(h_src->mnt);
+	h_src_dentry = h_src->dentry;
+	ssz = vfs_getxattr_alloc(h_src_userns, h_src_dentry, name, buf, 0,
+				 GFP_NOFS);
+	err = ssz;
+	if (unlikely(err <= 0)) {
+		if (err == -ENODATA
+		    || (err == -EOPNOTSUPP
+			&& ((ignore_flags & au_xattr_out_of_list)
+			    || (au_test_nfs_noacl(d_inode(h_src_dentry))
+				&& (!strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS)
+				    || !strcmp(name,
+					       XATTR_NAME_POSIX_ACL_DEFAULT))))
+			    ))
+			err = 0;
+		if (err && (verbose || au_debug_test()))
+			pr_err("%s, err %d\n", name, err);
+		goto out;
+	}
+
+	/* unlock it temporary */
+	h_dst_userns = mnt_user_ns(h_dst->mnt);
+	h_dst_dentry = h_dst->dentry;
+	h_idst = d_inode(h_dst_dentry);
+	inode_unlock(h_idst);
+	err = vfsub_setxattr(h_dst_userns, h_dst_dentry, name, *buf, ssz,
+			     /*flags*/0);
+	inode_lock_nested(h_idst, AuLsc_I_CHILD2);
+	if (unlikely(err)) {
+		if (verbose || au_debug_test())
+			pr_err("%s, err %d\n", name, err);
+		err = au_xattr_ignore(err, name, ignore_flags);
+	}
+
+out:
+	return err;
+}
+
+int au_cpup_xattr(struct path *h_dst, struct path *h_src, int ignore_flags,
+		  unsigned int verbose)
+{
+	int err, unlocked, acl_access, acl_default;
+	ssize_t ssz;
+	struct dentry *h_dst_dentry, *h_src_dentry;
+	struct inode *h_isrc, *h_idst;
+	char *value, *p, *o, *e;
+
+	/* try stopping to update the source inode while we are referencing */
+	/* there should not be the parent-child relationship between them */
+	h_dst_dentry = h_dst->dentry;
+	h_idst = d_inode(h_dst_dentry);
+	h_src_dentry = h_src->dentry;
+	h_isrc = d_inode(h_src_dentry);
+	inode_unlock(h_idst);
+	inode_lock_shared_nested(h_isrc, AuLsc_I_CHILD);
+	inode_lock_nested(h_idst, AuLsc_I_CHILD2);
+	unlocked = 0;
+
+	/* some filesystems don't list POSIX ACL, for example tmpfs */
+	ssz = vfs_listxattr(h_src_dentry, NULL, 0);
+	err = ssz;
+	if (unlikely(err < 0)) {
+		AuTraceErr(err);
+		if (err == -ENODATA
+		    || err == -EOPNOTSUPP)
+			err = 0;	/* ignore */
+		goto out;
+	}
+
+	err = 0;
+	p = NULL;
+	o = NULL;
+	if (ssz) {
+		err = -ENOMEM;
+		p = kmalloc(ssz, GFP_NOFS);
+		o = p;
+		if (unlikely(!p))
+			goto out;
+		err = vfs_listxattr(h_src_dentry, p, ssz);
+	}
+	inode_unlock_shared(h_isrc);
+	unlocked = 1;
+	AuDbg("err %d, ssz %zd\n", err, ssz);
+	if (unlikely(err < 0))
+		goto out_free;
+
+	err = 0;
+	e = p + ssz;
+	value = NULL;
+	acl_access = 0;
+	acl_default = 0;
+	while (!err && p < e) {
+		acl_access |= !strncmp(p, XATTR_NAME_POSIX_ACL_ACCESS,
+				       sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1);
+		acl_default |= !strncmp(p, XATTR_NAME_POSIX_ACL_DEFAULT,
+					sizeof(XATTR_NAME_POSIX_ACL_DEFAULT)
+					- 1);
+		err = au_do_cpup_xattr(h_dst, h_src, p, &value, ignore_flags,
+				       verbose);
+		p += strlen(p) + 1;
+	}
+	AuTraceErr(err);
+	ignore_flags |= au_xattr_out_of_list;
+	if (!err && !acl_access) {
+		err = au_do_cpup_xattr(h_dst, h_src,
+				       XATTR_NAME_POSIX_ACL_ACCESS, &value,
+				       ignore_flags, verbose);
+		AuTraceErr(err);
+	}
+	if (!err && !acl_default) {
+		err = au_do_cpup_xattr(h_dst, h_src,
+				       XATTR_NAME_POSIX_ACL_DEFAULT, &value,
+				       ignore_flags, verbose);
+		AuTraceErr(err);
+	}
+
+	au_kfree_try_rcu(value);
+
+out_free:
+	au_kfree_try_rcu(o);
+out:
+	if (!unlocked)
+		inode_unlock_shared(h_isrc);
+	AuTraceErr(err);
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_smack_reentering(struct super_block *sb)
+{
+#if IS_ENABLED(CONFIG_SECURITY_SMACK) || IS_ENABLED(CONFIG_SECURITY_SELINUX)
+	/*
+	 * as a part of lookup, smack_d_instantiate() is called, and it calls
+	 * i_op->getxattr(). ouch.
+	 */
+	return si_pid_test(sb);
+#else
+	return 0;
+#endif
+}
+
+enum {
+	AU_XATTR_LIST,
+	AU_XATTR_GET
+};
+
+struct au_lgxattr {
+	int type;
+	union {
+		struct {
+			char	*list;
+			size_t	size;
+		} list;
+		struct {
+			const char	*name;
+			void		*value;
+			size_t		size;
+		} get;
+	} u;
+};
+
+static ssize_t au_lgxattr(struct dentry *dentry, struct inode *inode,
+			  struct au_lgxattr *arg)
+{
+	ssize_t err;
+	int reenter;
+	struct path h_path;
+	struct super_block *sb;
+
+	sb = dentry->d_sb;
+	reenter = au_smack_reentering(sb);
+	if (!reenter) {
+		err = si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLM);
+		if (unlikely(err))
+			goto out;
+	}
+	err = au_h_path_getattr(dentry, inode, /*force*/1, &h_path, reenter);
+	if (unlikely(err))
+		goto out_si;
+	if (unlikely(!h_path.dentry))
+		/* illegally overlapped or something */
+		goto out_di; /* pretending success */
+
+	/* always topmost entry only */
+	switch (arg->type) {
+	case AU_XATTR_LIST:
+		err = vfs_listxattr(h_path.dentry,
+				    arg->u.list.list, arg->u.list.size);
+		break;
+	case AU_XATTR_GET:
+		AuDebugOn(d_is_negative(h_path.dentry));
+		err = vfs_getxattr(mnt_user_ns(h_path.mnt), h_path.dentry,
+				   arg->u.get.name, arg->u.get.value,
+				   arg->u.get.size);
+		break;
+	}
+
+out_di:
+	if (!reenter)
+		di_read_unlock(dentry, AuLock_IR);
+out_si:
+	if (!reenter)
+		si_read_unlock(sb);
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size)
+{
+	struct au_lgxattr arg = {
+		.type = AU_XATTR_LIST,
+		.u.list = {
+			.list	= list,
+			.size	= size
+		},
+	};
+
+	return au_lgxattr(dentry, /*inode*/NULL, &arg);
+}
+
+static ssize_t au_getxattr(struct dentry *dentry, struct inode *inode,
+			   const char *name, void *value, size_t size)
+{
+	struct au_lgxattr arg = {
+		.type = AU_XATTR_GET,
+		.u.get = {
+			.name	= name,
+			.value	= value,
+			.size	= size
+		},
+	};
+
+	return au_lgxattr(dentry, inode, &arg);
+}
+
+static int au_setxattr(struct dentry *dentry, struct inode *inode,
+		       const char *name, const void *value, size_t size,
+		       int flags)
+{
+	struct au_sxattr arg = {
+		.type = AU_XATTR_SET,
+		.u.set = {
+			.name	= name,
+			.value	= value,
+			.size	= size,
+			.flags	= flags
+		},
+	};
+
+	return au_sxattr(dentry, inode, &arg);
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_xattr_get(const struct xattr_handler *handler,
+			struct dentry *dentry, struct inode *inode,
+			const char *name, void *buffer, size_t size)
+{
+	return au_getxattr(dentry, inode, name, buffer, size);
+}
+
+static int au_xattr_set(const struct xattr_handler *handler,
+			struct user_namespace *userns,
+			struct dentry *dentry, struct inode *inode,
+			const char *name, const void *value, size_t size,
+			int flags)
+{
+	return au_setxattr(dentry, inode, name, value, size, flags);
+}
+
+static const struct xattr_handler au_xattr_handler = {
+	.name	= "",
+	.prefix	= "",
+	.get	= au_xattr_get,
+	.set	= au_xattr_set
+};
+
+static const struct xattr_handler *au_xattr_handlers[] = {
+#ifdef CONFIG_FS_POSIX_ACL
+	&posix_acl_access_xattr_handler,
+	&posix_acl_default_xattr_handler,
+#endif
+	&au_xattr_handler, /* must be last */
+	NULL
+};
+
+void au_xattr_init(struct super_block *sb)
+{
+	sb->s_xattr = au_xattr_handlers;
+}
diff -Naur --no-dereference a/fs/aufs/xino.c b/fs/aufs/xino.c
--- a/fs/aufs/xino.c	1969-12-31 19:00:00.000000000 -0500
+++ b/fs/aufs/xino.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,1926 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * external inode number translation table and bitmap
+ *
+ * things to consider
+ * - the lifetime
+ *   + au_xino object
+ *   + XINO files (xino, xib, xigen)
+ *   + dynamic debugfs entries (xiN)
+ *   + static debugfs entries (xib, xigen)
+ *   + static sysfs entry (xi_path)
+ * - several entry points to handle them.
+ *   + mount(2) without xino option (default)
+ *   + mount(2) with xino option
+ *   + mount(2) with noxino option
+ *   + umount(2)
+ *   + remount with add/del branches
+ *   + remount with xino/noxino options
+ */
+
+#include <linux/seq_file.h>
+#include <linux/statfs.h>
+#include "aufs.h"
+
+static aufs_bindex_t sbr_find_shared(struct super_block *sb, aufs_bindex_t btop,
+				     aufs_bindex_t bbot,
+				     struct super_block *h_sb)
+{
+	/* todo: try binary-search if the branches are many */
+	for (; btop <= bbot; btop++)
+		if (h_sb == au_sbr_sb(sb, btop))
+			return btop;
+	return -1;
+}
+
+/*
+ * find another branch who is on the same filesystem of the specified
+ * branch{@btgt}. search until @bbot.
+ */
+static aufs_bindex_t is_sb_shared(struct super_block *sb, aufs_bindex_t btgt,
+				  aufs_bindex_t bbot)
+{
+	aufs_bindex_t bindex;
+	struct super_block *tgt_sb;
+
+	tgt_sb = au_sbr_sb(sb, btgt);
+	bindex = sbr_find_shared(sb, /*btop*/0, btgt - 1, tgt_sb);
+	if (bindex < 0)
+		bindex = sbr_find_shared(sb, btgt + 1, bbot, tgt_sb);
+
+	return bindex;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * stop unnecessary notify events at creating xino files
+ */
+
+aufs_bindex_t au_xi_root(struct super_block *sb, struct dentry *dentry)
+{
+	aufs_bindex_t bfound, bindex, bbot;
+	struct dentry *parent;
+	struct au_branch *br;
+
+	bfound = -1;
+	parent = dentry->d_parent; /* safe d_parent access */
+	bbot = au_sbbot(sb);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		if (au_br_dentry(br) == parent) {
+			bfound = bindex;
+			break;
+		}
+	}
+
+	AuDbg("bfound b%d\n", bfound);
+	return bfound;
+}
+
+struct au_xino_lock_dir {
+	struct au_hinode *hdir;
+	struct dentry *parent;
+	struct inode *dir;
+};
+
+static struct dentry *au_dget_parent_lock(struct dentry *dentry,
+					  unsigned int lsc)
+{
+	struct dentry *parent;
+	struct inode *dir;
+
+	parent = dget_parent(dentry);
+	dir = d_inode(parent);
+	inode_lock_nested(dir, lsc);
+#if 0 /* it should not happen */
+	spin_lock(&dentry->d_lock);
+	if (unlikely(dentry->d_parent != parent)) {
+		spin_unlock(&dentry->d_lock);
+		inode_unlock(dir);
+		dput(parent);
+		parent = NULL;
+		goto out;
+	}
+	spin_unlock(&dentry->d_lock);
+
+out:
+#endif
+	return parent;
+}
+
+static void au_xino_lock_dir(struct super_block *sb, struct path *xipath,
+			     struct au_xino_lock_dir *ldir)
+{
+	aufs_bindex_t bindex;
+
+	ldir->hdir = NULL;
+	bindex = au_xi_root(sb, xipath->dentry);
+	if (bindex >= 0) {
+		/* rw branch root */
+		ldir->hdir = au_hi(d_inode(sb->s_root), bindex);
+		au_hn_inode_lock_nested(ldir->hdir, AuLsc_I_PARENT);
+	} else {
+		/* other */
+		ldir->parent = au_dget_parent_lock(xipath->dentry,
+						   AuLsc_I_PARENT);
+		ldir->dir = d_inode(ldir->parent);
+	}
+}
+
+static void au_xino_unlock_dir(struct au_xino_lock_dir *ldir)
+{
+	if (ldir->hdir)
+		au_hn_inode_unlock(ldir->hdir);
+	else {
+		inode_unlock(ldir->dir);
+		dput(ldir->parent);
+	}
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * create and set a new xino file
+ */
+struct file *au_xino_create(struct super_block *sb, char *fpath, int silent,
+			    int wbrtop)
+{
+	struct file *file;
+	struct dentry *h_parent, *d;
+	struct inode *h_dir, *inode;
+	int err;
+	static DEFINE_MUTEX(mtx);
+
+	/*
+	 * at mount-time, and the xino file is the default path,
+	 * hnotify is disabled so we have no notify events to ignore.
+	 * when a user specified the xino, we cannot get au_hdir to be ignored.
+	 */
+	if (!wbrtop)
+		mutex_lock(&mtx);
+	file = vfsub_filp_open(fpath, O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE
+			       /* | __FMODE_NONOTIFY */,
+			       0666);
+	if (IS_ERR(file)) {
+		if (!wbrtop)
+			mutex_unlock(&mtx);
+		if (!silent)
+			pr_err("open %s(%ld)\n", fpath, PTR_ERR(file));
+		return file;
+	}
+
+	/* keep file count */
+	err = 0;
+	d = file->f_path.dentry;
+	h_parent = au_dget_parent_lock(d, AuLsc_I_PARENT);
+	if (!wbrtop)
+		mutex_unlock(&mtx);
+	/* mnt_want_write() is unnecessary here */
+	h_dir = d_inode(h_parent);
+	inode = file_inode(file);
+	/* no delegation since it is just created */
+	if (inode->i_nlink)
+		err = vfsub_unlink(h_dir, &file->f_path, /*delegated*/NULL,
+				   /*force*/0);
+	inode_unlock(h_dir);
+	dput(h_parent);
+	if (unlikely(err)) {
+		if (!silent)
+			pr_err("unlink %s(%d)\n", fpath, err);
+		goto out;
+	}
+
+	err = -EINVAL;
+	if (unlikely(sb && sb == d->d_sb)) {
+		if (!silent)
+			pr_err("%s must be outside\n", fpath);
+		goto out;
+	}
+	if (unlikely(au_test_fs_bad_xino(d->d_sb))) {
+		if (!silent)
+			pr_err("xino doesn't support %s(%s)\n",
+			       fpath, au_sbtype(d->d_sb));
+		goto out;
+	}
+	return file; /* success */
+
+out:
+	fput(file);
+	file = ERR_PTR(err);
+	return file;
+}
+
+/*
+ * create a new xinofile at the same place/path as @base.
+ */
+struct file *au_xino_create2(struct super_block *sb, struct path *base,
+			     struct file *copy_src)
+{
+	struct file *file;
+	struct dentry *dentry;
+	struct inode *dir, *delegated;
+	struct qstr *name;
+	struct path ppath, path;
+	int err, do_unlock;
+	struct au_xino_lock_dir ldir;
+
+	do_unlock = 1;
+	au_xino_lock_dir(sb, base, &ldir);
+	dentry = base->dentry;
+	ppath.dentry = dentry->d_parent; /* dir inode is locked */
+	ppath.mnt = base->mnt;
+	dir = d_inode(ppath.dentry);
+	IMustLock(dir);
+
+	name = &dentry->d_name;
+	path.dentry = vfsub_lookup_one_len(name->name, &ppath, name->len);
+	if (IS_ERR(path.dentry)) {
+		file = (void *)path.dentry;
+		pr_err("%pd lookup err %ld\n", dentry, PTR_ERR(path.dentry));
+		goto out;
+	}
+
+	/* no need to mnt_want_write() since we call dentry_open() later */
+	err = vfs_create(mnt_user_ns(base->mnt), dir, path.dentry, 0666, NULL);
+	if (unlikely(err)) {
+		file = ERR_PTR(err);
+		pr_err("%pd create err %d\n", dentry, err);
+		goto out_dput;
+	}
+
+	path.mnt = base->mnt;
+	file = vfsub_dentry_open(&path,
+				 O_RDWR | O_CREAT | O_EXCL | O_LARGEFILE
+				 /* | __FMODE_NONOTIFY */);
+	if (IS_ERR(file)) {
+		pr_err("%pd open err %ld\n", dentry, PTR_ERR(file));
+		goto out_dput;
+	}
+
+	delegated = NULL;
+	err = vfsub_unlink(dir, &file->f_path, &delegated, /*force*/0);
+	au_xino_unlock_dir(&ldir);
+	do_unlock = 0;
+	if (unlikely(err == -EWOULDBLOCK)) {
+		pr_warn("cannot retry for NFSv4 delegation"
+			" for an internal unlink\n");
+		iput(delegated);
+	}
+	if (unlikely(err)) {
+		pr_err("%pd unlink err %d\n", dentry, err);
+		goto out_fput;
+	}
+
+	if (copy_src) {
+		/* no one can touch copy_src xino */
+		err = au_copy_file(file, copy_src, vfsub_f_size_read(copy_src));
+		if (unlikely(err)) {
+			pr_err("%pd copy err %d\n", dentry, err);
+			goto out_fput;
+		}
+	}
+	goto out_dput; /* success */
+
+out_fput:
+	fput(file);
+	file = ERR_PTR(err);
+out_dput:
+	dput(path.dentry);
+out:
+	if (do_unlock)
+		au_xino_unlock_dir(&ldir);
+	return file;
+}
+
+struct file *au_xino_file1(struct au_xino *xi)
+{
+	struct file *file;
+	unsigned int u, nfile;
+
+	file = NULL;
+	nfile = xi->xi_nfile;
+	for (u = 0; u < nfile; u++) {
+		file = xi->xi_file[u];
+		if (file)
+			break;
+	}
+
+	return file;
+}
+
+static int au_xino_file_set(struct au_xino *xi, int idx, struct file *file)
+{
+	int err;
+	struct file *f;
+	void *p;
+
+	if (file)
+		get_file(file);
+
+	err = 0;
+	f = NULL;
+	if (idx < xi->xi_nfile) {
+		f = xi->xi_file[idx];
+		if (f)
+			fput(f);
+	} else {
+		p = au_kzrealloc(xi->xi_file,
+				 sizeof(*xi->xi_file) * xi->xi_nfile,
+				 sizeof(*xi->xi_file) * (idx + 1),
+				 GFP_NOFS, /*may_shrink*/0);
+		if (p) {
+			MtxMustLock(&xi->xi_mtx);
+			xi->xi_file = p;
+			xi->xi_nfile = idx + 1;
+		} else {
+			err = -ENOMEM;
+			if (file)
+				fput(file);
+			goto out;
+		}
+	}
+	xi->xi_file[idx] = file;
+
+out:
+	return err;
+}
+
+/*
+ * if @xinew->xi is not set, then create new xigen file.
+ */
+struct file *au_xi_new(struct super_block *sb, struct au_xi_new *xinew)
+{
+	struct file *file;
+	int err;
+
+	SiMustAnyLock(sb);
+
+	file = au_xino_create2(sb, xinew->base, xinew->copy_src);
+	if (IS_ERR(file)) {
+		err = PTR_ERR(file);
+		pr_err("%s[%d], err %d\n",
+		       xinew->xi ? "xino" : "xigen",
+		       xinew->idx, err);
+		goto out;
+	}
+
+	if (xinew->xi)
+		err = au_xino_file_set(xinew->xi, xinew->idx, file);
+	else {
+		BUG();
+		/* todo: make xigen file an array */
+		/* err = au_xigen_file_set(sb, xinew->idx, file); */
+	}
+	fput(file);
+	if (unlikely(err))
+		file = ERR_PTR(err);
+
+out:
+	return file;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * truncate xino files
+ */
+static int au_xino_do_trunc(struct super_block *sb, aufs_bindex_t bindex,
+			    int idx, struct kstatfs *st)
+{
+	int err;
+	blkcnt_t blocks;
+	struct file *file, *new_xino;
+	struct au_xi_new xinew = {
+		.idx = idx
+	};
+
+	err = 0;
+	xinew.xi = au_sbr(sb, bindex)->br_xino;
+	file = au_xino_file(xinew.xi, idx);
+	if (!file)
+		goto out;
+
+	xinew.base = &file->f_path;
+	err = vfs_statfs(xinew.base, st);
+	if (unlikely(err)) {
+		AuErr1("statfs err %d, ignored\n", err);
+		err = 0;
+		goto out;
+	}
+
+	blocks = file_inode(file)->i_blocks;
+	pr_info("begin truncating xino(b%d-%d), ib%llu, %llu/%llu free blks\n",
+		bindex, idx, (u64)blocks, st->f_bfree, st->f_blocks);
+
+	xinew.copy_src = file;
+	new_xino = au_xi_new(sb, &xinew);
+	if (IS_ERR(new_xino)) {
+		err = PTR_ERR(new_xino);
+		pr_err("xino(b%d-%d), err %d, ignored\n", bindex, idx, err);
+		goto out;
+	}
+
+	err = vfs_statfs(&new_xino->f_path, st);
+	if (!err)
+		pr_info("end truncating xino(b%d-%d), ib%llu, %llu/%llu free blks\n",
+			bindex, idx, (u64)file_inode(new_xino)->i_blocks,
+			st->f_bfree, st->f_blocks);
+	else {
+		AuErr1("statfs err %d, ignored\n", err);
+		err = 0;
+	}
+
+out:
+	return err;
+}
+
+int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex, int idx_begin)
+{
+	int err, i;
+	unsigned long jiffy;
+	aufs_bindex_t bbot;
+	struct kstatfs *st;
+	struct au_branch *br;
+	struct au_xino *xi;
+
+	err = -ENOMEM;
+	st = kmalloc(sizeof(*st), GFP_NOFS);
+	if (unlikely(!st))
+		goto out;
+
+	err = -EINVAL;
+	bbot = au_sbbot(sb);
+	if (unlikely(bindex < 0 || bbot < bindex))
+		goto out_st;
+
+	err = 0;
+	jiffy = jiffies;
+	br = au_sbr(sb, bindex);
+	xi = br->br_xino;
+	for (i = idx_begin; !err && i < xi->xi_nfile; i++)
+		err = au_xino_do_trunc(sb, bindex, i, st);
+	if (!err)
+		au_sbi(sb)->si_xino_jiffy = jiffy;
+
+out_st:
+	au_kfree_rcu(st);
+out:
+	return err;
+}
+
+struct xino_do_trunc_args {
+	struct super_block *sb;
+	struct au_branch *br;
+	int idx;
+};
+
+static void xino_do_trunc(void *_args)
+{
+	struct xino_do_trunc_args *args = _args;
+	struct super_block *sb;
+	struct au_branch *br;
+	struct inode *dir;
+	int err, idx;
+	aufs_bindex_t bindex;
+
+	err = 0;
+	sb = args->sb;
+	dir = d_inode(sb->s_root);
+	br = args->br;
+	idx = args->idx;
+
+	si_noflush_write_lock(sb);
+	ii_read_lock_parent(dir);
+	bindex = au_br_index(sb, br->br_id);
+	err = au_xino_trunc(sb, bindex, idx);
+	ii_read_unlock(dir);
+	if (unlikely(err))
+		pr_warn("err b%d, (%d)\n", bindex, err);
+	atomic_dec(&br->br_xino->xi_truncating);
+	au_lcnt_dec(&br->br_count);
+	si_write_unlock(sb);
+	au_nwt_done(&au_sbi(sb)->si_nowait);
+	au_kfree_rcu(args);
+}
+
+/*
+ * returns the index in the xi_file array whose corresponding file is necessary
+ * to truncate, or -1 which means no need to truncate.
+ */
+static int xino_trunc_test(struct super_block *sb, struct au_branch *br)
+{
+	int err;
+	unsigned int u;
+	struct kstatfs st;
+	struct au_sbinfo *sbinfo;
+	struct au_xino *xi;
+	struct file *file;
+
+	/* todo: si_xino_expire and the ratio should be customizable */
+	sbinfo = au_sbi(sb);
+	if (time_before(jiffies,
+			sbinfo->si_xino_jiffy + sbinfo->si_xino_expire))
+		return -1;
+
+	/* truncation border */
+	xi = br->br_xino;
+	for (u = 0; u < xi->xi_nfile; u++) {
+		file = au_xino_file(xi, u);
+		if (!file)
+			continue;
+
+		err = vfs_statfs(&file->f_path, &st);
+		if (unlikely(err)) {
+			AuErr1("statfs err %d, ignored\n", err);
+			return -1;
+		}
+		if (div64_u64(st.f_bfree * 100, st.f_blocks)
+		    >= AUFS_XINO_DEF_TRUNC)
+			return u;
+	}
+
+	return -1;
+}
+
+static void xino_try_trunc(struct super_block *sb, struct au_branch *br)
+{
+	int idx;
+	struct xino_do_trunc_args *args;
+	int wkq_err;
+
+	idx = xino_trunc_test(sb, br);
+	if (idx < 0)
+		return;
+
+	if (atomic_inc_return(&br->br_xino->xi_truncating) > 1)
+		goto out;
+
+	/* lock and kfree() will be called in trunc_xino() */
+	args = kmalloc(sizeof(*args), GFP_NOFS);
+	if (unlikely(!args)) {
+		AuErr1("no memory\n");
+		goto out;
+	}
+
+	au_lcnt_inc(&br->br_count);
+	args->sb = sb;
+	args->br = br;
+	args->idx = idx;
+	wkq_err = au_wkq_nowait(xino_do_trunc, args, sb, /*flags*/0);
+	if (!wkq_err)
+		return; /* success */
+
+	pr_err("wkq %d\n", wkq_err);
+	au_lcnt_dec(&br->br_count);
+	au_kfree_rcu(args);
+
+out:
+	atomic_dec(&br->br_xino->xi_truncating);
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_xi_calc {
+	int idx;
+	loff_t pos;
+};
+
+static void au_xi_calc(struct super_block *sb, ino_t h_ino,
+		       struct au_xi_calc *calc)
+{
+	loff_t maxent;
+
+	maxent = au_xi_maxent(sb);
+	calc->idx = div64_u64_rem(h_ino, maxent, &calc->pos);
+	calc->pos *= sizeof(ino_t);
+}
+
+static int au_xino_do_new_async(struct super_block *sb, struct au_branch *br,
+				struct au_xi_calc *calc)
+{
+	int err;
+	struct file *file;
+	struct au_xino *xi = br->br_xino;
+	struct au_xi_new xinew = {
+		.xi = xi
+	};
+
+	SiMustAnyLock(sb);
+
+	err = 0;
+	if (!xi)
+		goto out;
+
+	mutex_lock(&xi->xi_mtx);
+	file = au_xino_file(xi, calc->idx);
+	if (file)
+		goto out_mtx;
+
+	file = au_xino_file(xi, /*idx*/-1);
+	AuDebugOn(!file);
+	xinew.idx = calc->idx;
+	xinew.base = &file->f_path;
+	/* xinew.copy_src = NULL; */
+	file = au_xi_new(sb, &xinew);
+	if (IS_ERR(file))
+		err = PTR_ERR(file);
+
+out_mtx:
+	mutex_unlock(&xi->xi_mtx);
+out:
+	return err;
+}
+
+struct au_xino_do_new_async_args {
+	struct super_block *sb;
+	struct au_branch *br;
+	struct au_xi_calc calc;
+	ino_t ino;
+};
+
+struct au_xi_writing {
+	struct hlist_bl_node node;
+	ino_t h_ino, ino;
+};
+
+static int au_xino_do_write(struct file *file, struct au_xi_calc *calc,
+			    ino_t ino);
+
+static void au_xino_call_do_new_async(void *args)
+{
+	struct au_xino_do_new_async_args *a = args;
+	struct au_branch *br;
+	struct super_block *sb;
+	struct au_sbinfo *sbi;
+	struct inode *root;
+	struct file *file;
+	struct au_xi_writing *del, *p;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos;
+	int err;
+
+	br = a->br;
+	sb = a->sb;
+	sbi = au_sbi(sb);
+	si_noflush_read_lock(sb);
+	root = d_inode(sb->s_root);
+	ii_read_lock_child(root);
+	err = au_xino_do_new_async(sb, br, &a->calc);
+	if (unlikely(err)) {
+		AuIOErr("err %d\n", err);
+		goto out;
+	}
+
+	file = au_xino_file(br->br_xino, a->calc.idx);
+	AuDebugOn(!file);
+	err = au_xino_do_write(file, &a->calc, a->ino);
+	if (unlikely(err)) {
+		AuIOErr("err %d\n", err);
+		goto out;
+	}
+
+	del = NULL;
+	hbl = &br->br_xino->xi_writing;
+	hlist_bl_lock(hbl);
+	au_hbl_for_each(pos, hbl) {
+		p = container_of(pos, struct au_xi_writing, node);
+		if (p->ino == a->ino) {
+			del = p;
+			hlist_bl_del(&p->node);
+			break;
+		}
+	}
+	hlist_bl_unlock(hbl);
+	au_kfree_rcu(del);
+
+out:
+	au_lcnt_dec(&br->br_count);
+	ii_read_unlock(root);
+	si_read_unlock(sb);
+	au_nwt_done(&sbi->si_nowait);
+	au_kfree_rcu(a);
+}
+
+/*
+ * create a new xino file asynchronously
+ */
+static int au_xino_new_async(struct super_block *sb, struct au_branch *br,
+			     struct au_xi_calc *calc, ino_t ino)
+{
+	int err;
+	struct au_xino_do_new_async_args *arg;
+
+	err = -ENOMEM;
+	arg = kmalloc(sizeof(*arg), GFP_NOFS);
+	if (unlikely(!arg))
+		goto out;
+
+	arg->sb = sb;
+	arg->br = br;
+	arg->calc = *calc;
+	arg->ino = ino;
+	au_lcnt_inc(&br->br_count);
+	err = au_wkq_nowait(au_xino_call_do_new_async, arg, sb, AuWkq_NEST);
+	if (unlikely(err)) {
+		pr_err("wkq %d\n", err);
+		au_lcnt_dec(&br->br_count);
+		au_kfree_rcu(arg);
+	}
+
+out:
+	return err;
+}
+
+/*
+ * read @ino from xinofile for the specified branch{@sb, @bindex}
+ * at the position of @h_ino.
+ */
+int au_xino_read(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+		 ino_t *ino)
+{
+	int err;
+	ssize_t sz;
+	struct au_xi_calc calc;
+	struct au_sbinfo *sbinfo;
+	struct file *file;
+	struct au_xino *xi;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos;
+	struct au_xi_writing *p;
+
+	*ino = 0;
+	if (!au_opt_test(au_mntflags(sb), XINO))
+		return 0; /* no xino */
+
+	err = 0;
+	au_xi_calc(sb, h_ino, &calc);
+	xi = au_sbr(sb, bindex)->br_xino;
+	file = au_xino_file(xi, calc.idx);
+	if (!file) {
+		hbl = &xi->xi_writing;
+		hlist_bl_lock(hbl);
+		au_hbl_for_each(pos, hbl) {
+			p = container_of(pos, struct au_xi_writing, node);
+			if (p->h_ino == h_ino) {
+				AuDbg("hi%llu, i%llu, found\n",
+				      (u64)p->h_ino, (u64)p->ino);
+				*ino = p->ino;
+				break;
+			}
+		}
+		hlist_bl_unlock(hbl);
+		return 0;
+	} else if (vfsub_f_size_read(file) < calc.pos + sizeof(*ino))
+		return 0; /* no xino */
+
+	sbinfo = au_sbi(sb);
+	sz = xino_fread(file, ino, sizeof(*ino), &calc.pos);
+	if (sz == sizeof(*ino))
+		return 0; /* success */
+
+	err = sz;
+	if (unlikely(sz >= 0)) {
+		err = -EIO;
+		AuIOErr("xino read error (%zd)\n", sz);
+	}
+	return err;
+}
+
+static int au_xino_do_write(struct file *file, struct au_xi_calc *calc,
+			    ino_t ino)
+{
+	ssize_t sz;
+
+	sz = xino_fwrite(file, &ino, sizeof(ino), &calc->pos);
+	if (sz == sizeof(ino))
+		return 0; /* success */
+
+	AuIOErr("write failed (%zd)\n", sz);
+	return -EIO;
+}
+
+/*
+ * write @ino to the xinofile for the specified branch{@sb, @bindex}
+ * at the position of @h_ino.
+ * even if @ino is zero, it is written to the xinofile and means no entry.
+ * if the size of the xino file on a specific filesystem exceeds the watermark,
+ * try truncating it.
+ */
+int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+		  ino_t ino)
+{
+	int err;
+	unsigned int mnt_flags;
+	struct au_xi_calc calc;
+	struct file *file;
+	struct au_branch *br;
+	struct au_xino *xi;
+	struct au_xi_writing *p;
+
+	SiMustAnyLock(sb);
+
+	mnt_flags = au_mntflags(sb);
+	if (!au_opt_test(mnt_flags, XINO))
+		return 0;
+
+	au_xi_calc(sb, h_ino, &calc);
+	br = au_sbr(sb, bindex);
+	xi = br->br_xino;
+	file = au_xino_file(xi, calc.idx);
+	if (!file) {
+		/* store the inum pair into the list */
+		p = kmalloc(sizeof(*p), GFP_NOFS | __GFP_NOFAIL);
+		p->h_ino = h_ino;
+		p->ino = ino;
+		au_hbl_add(&p->node, &xi->xi_writing);
+
+		/* create and write a new xino file asynchronously */
+		err = au_xino_new_async(sb, br, &calc, ino);
+		if (!err)
+			return 0; /* success */
+		goto out;
+	}
+
+	err = au_xino_do_write(file, &calc, ino);
+	if (!err) {
+		br = au_sbr(sb, bindex);
+		if (au_opt_test(mnt_flags, TRUNC_XINO)
+		    && au_test_fs_trunc_xino(au_br_sb(br)))
+			xino_try_trunc(sb, br);
+		return 0; /* success */
+	}
+
+out:
+	AuIOErr("write failed (%d)\n", err);
+	return -EIO;
+}
+
+static ssize_t xino_fread_wkq(struct file *file, void *buf, size_t size,
+			      loff_t *pos);
+
+/* todo: unnecessary to support mmap_sem since kernel-space? */
+ssize_t xino_fread(struct file *file, void *kbuf, size_t size, loff_t *pos)
+{
+	ssize_t err;
+	int i;
+	const int prevent_endless = 10;
+
+	i = 0;
+	do {
+		err = vfsub_read_k(file, kbuf, size, pos);
+		if (err == -EINTR
+		    && !au_wkq_test()
+		    && fatal_signal_pending(current)) {
+			err = xino_fread_wkq(file, kbuf, size, pos);
+			BUG_ON(err == -EINTR);
+		}
+	} while (i++ < prevent_endless
+		 && (err == -EAGAIN || err == -EINTR));
+
+#if 0 /* reserved for future use */
+	if (err > 0)
+		fsnotify_access(file->f_path.dentry);
+#endif
+
+	return err;
+}
+
+struct xino_fread_args {
+	ssize_t *errp;
+	struct file *file;
+	void *buf;
+	size_t size;
+	loff_t *pos;
+};
+
+static void call_xino_fread(void *args)
+{
+	struct xino_fread_args *a = args;
+	*a->errp = xino_fread(a->file, a->buf, a->size, a->pos);
+}
+
+static ssize_t xino_fread_wkq(struct file *file, void *buf, size_t size,
+			      loff_t *pos)
+{
+	ssize_t err;
+	int wkq_err;
+	struct xino_fread_args args = {
+		.errp	= &err,
+		.file	= file,
+		.buf	= buf,
+		.size	= size,
+		.pos	= pos
+	};
+
+	wkq_err = au_wkq_wait(call_xino_fread, &args);
+	if (unlikely(wkq_err))
+		err = wkq_err;
+
+	return err;
+}
+
+static ssize_t xino_fwrite_wkq(struct file *file, void *buf, size_t size,
+			       loff_t *pos);
+
+static ssize_t do_xino_fwrite(struct file *file, void *kbuf, size_t size,
+			      loff_t *pos)
+{
+	ssize_t err;
+	int i;
+	const int prevent_endless = 10;
+
+	i = 0;
+	do {
+		err = vfsub_write_k(file, kbuf, size, pos);
+		if (err == -EINTR
+		    && !au_wkq_test()
+		    && fatal_signal_pending(current)) {
+			err = xino_fwrite_wkq(file, kbuf, size, pos);
+			BUG_ON(err == -EINTR);
+		}
+	} while (i++ < prevent_endless
+		 && (err == -EAGAIN || err == -EINTR));
+
+#if 0 /* reserved for future use */
+	if (err > 0)
+		fsnotify_modify(file->f_path.dentry);
+#endif
+
+	return err;
+}
+
+struct do_xino_fwrite_args {
+	ssize_t *errp;
+	struct file *file;
+	void *buf;
+	size_t size;
+	loff_t *pos;
+};
+
+static void call_do_xino_fwrite(void *args)
+{
+	struct do_xino_fwrite_args *a = args;
+	*a->errp = do_xino_fwrite(a->file, a->buf, a->size, a->pos);
+}
+
+static ssize_t xino_fwrite_wkq(struct file *file, void *buf, size_t size,
+			       loff_t *pos)
+{
+	ssize_t err;
+	int wkq_err;
+	struct do_xino_fwrite_args args = {
+		.errp	= &err,
+		.file	= file,
+		.buf	= buf,
+		.size	= size,
+		.pos	= pos
+	};
+
+	/*
+	 * it breaks RLIMIT_FSIZE and normal user's limit,
+	 * users should care about quota and real 'filesystem full.'
+	 */
+	wkq_err = au_wkq_wait(call_do_xino_fwrite, &args);
+	if (unlikely(wkq_err))
+		err = wkq_err;
+
+	return err;
+}
+
+ssize_t xino_fwrite(struct file *file, void *buf, size_t size, loff_t *pos)
+{
+	ssize_t err;
+
+	if (rlimit(RLIMIT_FSIZE) == RLIM_INFINITY) {
+		lockdep_off();
+		err = do_xino_fwrite(file, buf, size, pos);
+		lockdep_on();
+	} else {
+		lockdep_off();
+		err = xino_fwrite_wkq(file, buf, size, pos);
+		lockdep_on();
+	}
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * inode number bitmap
+ */
+static const int page_bits = (int)PAGE_SIZE * BITS_PER_BYTE;
+static ino_t xib_calc_ino(unsigned long pindex, int bit)
+{
+	ino_t ino;
+
+	AuDebugOn(bit < 0 || page_bits <= bit);
+	ino = AUFS_FIRST_INO + pindex * page_bits + bit;
+	return ino;
+}
+
+static void xib_calc_bit(ino_t ino, unsigned long *pindex, int *bit)
+{
+	AuDebugOn(ino < AUFS_FIRST_INO);
+	ino -= AUFS_FIRST_INO;
+	*pindex = ino / page_bits;
+	*bit = ino % page_bits;
+}
+
+static int xib_pindex(struct super_block *sb, unsigned long pindex)
+{
+	int err;
+	loff_t pos;
+	ssize_t sz;
+	struct au_sbinfo *sbinfo;
+	struct file *xib;
+	unsigned long *p;
+
+	sbinfo = au_sbi(sb);
+	MtxMustLock(&sbinfo->si_xib_mtx);
+	AuDebugOn(pindex > ULONG_MAX / PAGE_SIZE
+		  || !au_opt_test(sbinfo->si_mntflags, XINO));
+
+	if (pindex == sbinfo->si_xib_last_pindex)
+		return 0;
+
+	xib = sbinfo->si_xib;
+	p = sbinfo->si_xib_buf;
+	pos = sbinfo->si_xib_last_pindex;
+	pos *= PAGE_SIZE;
+	sz = xino_fwrite(xib, p, PAGE_SIZE, &pos);
+	if (unlikely(sz != PAGE_SIZE))
+		goto out;
+
+	pos = pindex;
+	pos *= PAGE_SIZE;
+	if (vfsub_f_size_read(xib) >= pos + PAGE_SIZE)
+		sz = xino_fread(xib, p, PAGE_SIZE, &pos);
+	else {
+		memset(p, 0, PAGE_SIZE);
+		sz = xino_fwrite(xib, p, PAGE_SIZE, &pos);
+	}
+	if (sz == PAGE_SIZE) {
+		sbinfo->si_xib_last_pindex = pindex;
+		return 0; /* success */
+	}
+
+out:
+	AuIOErr1("write failed (%zd)\n", sz);
+	err = sz;
+	if (sz >= 0)
+		err = -EIO;
+	return err;
+}
+
+static void au_xib_clear_bit(struct inode *inode)
+{
+	int err, bit;
+	unsigned long pindex;
+	struct super_block *sb;
+	struct au_sbinfo *sbinfo;
+
+	AuDebugOn(inode->i_nlink);
+
+	sb = inode->i_sb;
+	xib_calc_bit(inode->i_ino, &pindex, &bit);
+	AuDebugOn(page_bits <= bit);
+	sbinfo = au_sbi(sb);
+	mutex_lock(&sbinfo->si_xib_mtx);
+	err = xib_pindex(sb, pindex);
+	if (!err) {
+		clear_bit(bit, sbinfo->si_xib_buf);
+		sbinfo->si_xib_next_bit = bit;
+	}
+	mutex_unlock(&sbinfo->si_xib_mtx);
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * truncate a xino bitmap file
+ */
+
+/* todo: slow */
+static int do_xib_restore(struct super_block *sb, struct file *file, void *page)
+{
+	int err, bit;
+	ssize_t sz;
+	unsigned long pindex;
+	loff_t pos, pend;
+	struct au_sbinfo *sbinfo;
+	ino_t *ino;
+	unsigned long *p;
+
+	err = 0;
+	sbinfo = au_sbi(sb);
+	MtxMustLock(&sbinfo->si_xib_mtx);
+	p = sbinfo->si_xib_buf;
+	pend = vfsub_f_size_read(file);
+	pos = 0;
+	while (pos < pend) {
+		sz = xino_fread(file, page, PAGE_SIZE, &pos);
+		err = sz;
+		if (unlikely(sz <= 0))
+			goto out;
+
+		err = 0;
+		for (ino = page; sz > 0; ino++, sz -= sizeof(ino)) {
+			if (unlikely(*ino < AUFS_FIRST_INO))
+				continue;
+
+			xib_calc_bit(*ino, &pindex, &bit);
+			AuDebugOn(page_bits <= bit);
+			err = xib_pindex(sb, pindex);
+			if (!err)
+				set_bit(bit, p);
+			else
+				goto out;
+		}
+	}
+
+out:
+	return err;
+}
+
+static int xib_restore(struct super_block *sb)
+{
+	int err, i;
+	unsigned int nfile;
+	aufs_bindex_t bindex, bbot;
+	void *page;
+	struct au_branch *br;
+	struct au_xino *xi;
+	struct file *file;
+
+	err = -ENOMEM;
+	page = (void *)__get_free_page(GFP_NOFS);
+	if (unlikely(!page))
+		goto out;
+
+	err = 0;
+	bbot = au_sbbot(sb);
+	for (bindex = 0; !err && bindex <= bbot; bindex++)
+		if (!bindex || is_sb_shared(sb, bindex, bindex - 1) < 0) {
+			br = au_sbr(sb, bindex);
+			xi = br->br_xino;
+			nfile = xi->xi_nfile;
+			for (i = 0; i < nfile; i++) {
+				file = au_xino_file(xi, i);
+				if (file)
+					err = do_xib_restore(sb, file, page);
+			}
+		} else
+			AuDbg("skip shared b%d\n", bindex);
+	free_page((unsigned long)page);
+
+out:
+	return err;
+}
+
+int au_xib_trunc(struct super_block *sb)
+{
+	int err;
+	ssize_t sz;
+	loff_t pos;
+	struct au_sbinfo *sbinfo;
+	unsigned long *p;
+	struct file *file;
+
+	SiMustWriteLock(sb);
+
+	err = 0;
+	sbinfo = au_sbi(sb);
+	if (!au_opt_test(sbinfo->si_mntflags, XINO))
+		goto out;
+
+	file = sbinfo->si_xib;
+	if (vfsub_f_size_read(file) <= PAGE_SIZE)
+		goto out;
+
+	file = au_xino_create2(sb, &sbinfo->si_xib->f_path, NULL);
+	err = PTR_ERR(file);
+	if (IS_ERR(file))
+		goto out;
+	fput(sbinfo->si_xib);
+	sbinfo->si_xib = file;
+
+	p = sbinfo->si_xib_buf;
+	memset(p, 0, PAGE_SIZE);
+	pos = 0;
+	sz = xino_fwrite(sbinfo->si_xib, p, PAGE_SIZE, &pos);
+	if (unlikely(sz != PAGE_SIZE)) {
+		err = sz;
+		AuIOErr("err %d\n", err);
+		if (sz >= 0)
+			err = -EIO;
+		goto out;
+	}
+
+	mutex_lock(&sbinfo->si_xib_mtx);
+	/* mnt_want_write() is unnecessary here */
+	err = xib_restore(sb);
+	mutex_unlock(&sbinfo->si_xib_mtx);
+
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+struct au_xino *au_xino_alloc(unsigned int nfile)
+{
+	struct au_xino *xi;
+
+	xi = kzalloc(sizeof(*xi), GFP_NOFS);
+	if (unlikely(!xi))
+		goto out;
+	xi->xi_nfile = nfile;
+	xi->xi_file = kcalloc(nfile, sizeof(*xi->xi_file), GFP_NOFS);
+	if (unlikely(!xi->xi_file))
+		goto out_free;
+
+	xi->xi_nondir.total = 8; /* initial size */
+	xi->xi_nondir.array = kcalloc(xi->xi_nondir.total, sizeof(ino_t),
+				      GFP_NOFS);
+	if (unlikely(!xi->xi_nondir.array))
+		goto out_file;
+
+	spin_lock_init(&xi->xi_nondir.spin);
+	init_waitqueue_head(&xi->xi_nondir.wqh);
+	mutex_init(&xi->xi_mtx);
+	INIT_HLIST_BL_HEAD(&xi->xi_writing);
+	atomic_set(&xi->xi_truncating, 0);
+	kref_init(&xi->xi_kref);
+	goto out; /* success */
+
+out_file:
+	au_kfree_try_rcu(xi->xi_file);
+out_free:
+	au_kfree_rcu(xi);
+	xi = NULL;
+out:
+	return xi;
+}
+
+static int au_xino_init(struct au_branch *br, int idx, struct file *file)
+{
+	int err;
+	struct au_xino *xi;
+
+	err = 0;
+	xi = au_xino_alloc(idx + 1);
+	if (unlikely(!xi)) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	if (file)
+		get_file(file);
+	xi->xi_file[idx] = file;
+	AuDebugOn(br->br_xino);
+	br->br_xino = xi;
+
+out:
+	return err;
+}
+
+static void au_xino_release(struct kref *kref)
+{
+	struct au_xino *xi;
+	int i;
+	unsigned long ul;
+	struct hlist_bl_head *hbl;
+	struct hlist_bl_node *pos, *n;
+	struct au_xi_writing *p;
+
+	xi = container_of(kref, struct au_xino, xi_kref);
+	for (i = 0; i < xi->xi_nfile; i++)
+		if (xi->xi_file[i])
+			fput(xi->xi_file[i]);
+	for (i = xi->xi_nondir.total - 1; i >= 0; i--)
+		AuDebugOn(xi->xi_nondir.array[i]);
+	mutex_destroy(&xi->xi_mtx);
+	hbl = &xi->xi_writing;
+	ul = au_hbl_count(hbl);
+	if (unlikely(ul)) {
+		pr_warn("xi_writing %lu\n", ul);
+		hlist_bl_lock(hbl);
+		hlist_bl_for_each_entry_safe(p, pos, n, hbl, node) {
+			hlist_bl_del(&p->node);
+			/* kmemleak reported au_kfree_rcu() doesn't free it */
+			kfree(p);
+		}
+		hlist_bl_unlock(hbl);
+	}
+	au_kfree_try_rcu(xi->xi_file);
+	au_kfree_try_rcu(xi->xi_nondir.array);
+	au_kfree_rcu(xi);
+}
+
+int au_xino_put(struct au_branch *br)
+{
+	int ret;
+	struct au_xino *xi;
+
+	ret = 0;
+	xi = br->br_xino;
+	if (xi) {
+		br->br_xino = NULL;
+		ret = kref_put(&xi->xi_kref, au_xino_release);
+	}
+
+	return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * xino mount option handlers
+ */
+
+/* xino bitmap */
+static void xino_clear_xib(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+
+	SiMustWriteLock(sb);
+
+	sbinfo = au_sbi(sb);
+	if (sbinfo->si_xib)
+		fput(sbinfo->si_xib);
+	sbinfo->si_xib = NULL;
+	if (sbinfo->si_xib_buf)
+		free_page((unsigned long)sbinfo->si_xib_buf);
+	sbinfo->si_xib_buf = NULL;
+}
+
+static int au_xino_set_xib(struct super_block *sb, struct path *path)
+{
+	int err;
+	loff_t pos;
+	struct au_sbinfo *sbinfo;
+	struct file *file;
+	struct super_block *xi_sb;
+
+	SiMustWriteLock(sb);
+
+	sbinfo = au_sbi(sb);
+	file = au_xino_create2(sb, path, sbinfo->si_xib);
+	err = PTR_ERR(file);
+	if (IS_ERR(file))
+		goto out;
+	if (sbinfo->si_xib)
+		fput(sbinfo->si_xib);
+	sbinfo->si_xib = file;
+	xi_sb = file_inode(file)->i_sb;
+	sbinfo->si_ximaxent = xi_sb->s_maxbytes;
+	if (unlikely(sbinfo->si_ximaxent < PAGE_SIZE)) {
+		err = -EIO;
+		pr_err("s_maxbytes(%llu) on %s is too small\n",
+		       (u64)sbinfo->si_ximaxent, au_sbtype(xi_sb));
+		goto out_unset;
+	}
+	sbinfo->si_ximaxent /= sizeof(ino_t);
+
+	err = -ENOMEM;
+	if (!sbinfo->si_xib_buf)
+		sbinfo->si_xib_buf = (void *)get_zeroed_page(GFP_NOFS);
+	if (unlikely(!sbinfo->si_xib_buf))
+		goto out_unset;
+
+	sbinfo->si_xib_last_pindex = 0;
+	sbinfo->si_xib_next_bit = 0;
+	if (vfsub_f_size_read(file) < PAGE_SIZE) {
+		pos = 0;
+		err = xino_fwrite(file, sbinfo->si_xib_buf, PAGE_SIZE, &pos);
+		if (unlikely(err != PAGE_SIZE))
+			goto out_free;
+	}
+	err = 0;
+	goto out; /* success */
+
+out_free:
+	if (sbinfo->si_xib_buf)
+		free_page((unsigned long)sbinfo->si_xib_buf);
+	sbinfo->si_xib_buf = NULL;
+	if (err >= 0)
+		err = -EIO;
+out_unset:
+	fput(sbinfo->si_xib);
+	sbinfo->si_xib = NULL;
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+/* xino for each branch */
+static void xino_clear_br(struct super_block *sb)
+{
+	aufs_bindex_t bindex, bbot;
+	struct au_branch *br;
+
+	bbot = au_sbbot(sb);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		AuDebugOn(!br);
+		au_xino_put(br);
+	}
+}
+
+static void au_xino_set_br_shared(struct super_block *sb, struct au_branch *br,
+				  aufs_bindex_t bshared)
+{
+	struct au_branch *brshared;
+
+	brshared = au_sbr(sb, bshared);
+	AuDebugOn(!brshared->br_xino);
+	AuDebugOn(!brshared->br_xino->xi_file);
+	if (br->br_xino != brshared->br_xino) {
+		au_xino_get(brshared);
+		au_xino_put(br);
+		br->br_xino = brshared->br_xino;
+	}
+}
+
+struct au_xino_do_set_br {
+	struct au_branch *br;
+	ino_t h_ino;
+	aufs_bindex_t bshared;
+};
+
+static int au_xino_do_set_br(struct super_block *sb, struct path *path,
+			     struct au_xino_do_set_br *args)
+{
+	int err;
+	struct au_xi_calc calc;
+	struct file *file;
+	struct au_branch *br;
+	struct au_xi_new xinew = {
+		.base = path
+	};
+
+	br = args->br;
+	xinew.xi = br->br_xino;
+	au_xi_calc(sb, args->h_ino, &calc);
+	xinew.copy_src = au_xino_file(xinew.xi, calc.idx);
+	if (args->bshared >= 0)
+		/* shared xino */
+		au_xino_set_br_shared(sb, br, args->bshared);
+	else if (!xinew.xi) {
+		/* new xino */
+		err = au_xino_init(br, calc.idx, xinew.copy_src);
+		if (unlikely(err))
+			goto out;
+	}
+
+	/* force re-creating */
+	xinew.xi = br->br_xino;
+	xinew.idx = calc.idx;
+	mutex_lock(&xinew.xi->xi_mtx);
+	file = au_xi_new(sb, &xinew);
+	mutex_unlock(&xinew.xi->xi_mtx);
+	err = PTR_ERR(file);
+	if (IS_ERR(file))
+		goto out;
+	AuDebugOn(!file);
+
+	err = au_xino_do_write(file, &calc, AUFS_ROOT_INO);
+	if (unlikely(err))
+		au_xino_put(br);
+
+out:
+	AuTraceErr(err);
+	return err;
+}
+
+static int au_xino_set_br(struct super_block *sb, struct path *path)
+{
+	int err;
+	aufs_bindex_t bindex, bbot;
+	struct au_xino_do_set_br args;
+	struct inode *inode;
+
+	SiMustWriteLock(sb);
+
+	bbot = au_sbbot(sb);
+	inode = d_inode(sb->s_root);
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		args.h_ino = au_h_iptr(inode, bindex)->i_ino;
+		args.br = au_sbr(sb, bindex);
+		args.bshared = is_sb_shared(sb, bindex, bindex - 1);
+		err = au_xino_do_set_br(sb, path, &args);
+		if (unlikely(err))
+			break;
+	}
+
+	AuTraceErr(err);
+	return err;
+}
+
+void au_xino_clr(struct super_block *sb)
+{
+	struct au_sbinfo *sbinfo;
+
+	au_xigen_clr(sb);
+	xino_clear_xib(sb);
+	xino_clear_br(sb);
+	dbgaufs_brs_del(sb, 0);
+	sbinfo = au_sbi(sb);
+	/* lvalue, do not call au_mntflags() */
+	au_opt_clr(sbinfo->si_mntflags, XINO);
+}
+
+int au_xino_set(struct super_block *sb, struct au_opt_xino *xiopt, int remount)
+{
+	int err, skip;
+	struct dentry *dentry, *parent, *cur_dentry, *cur_parent;
+	struct qstr *dname, *cur_name;
+	struct file *cur_xino;
+	struct au_sbinfo *sbinfo;
+	struct path *path, *cur_path;
+
+	SiMustWriteLock(sb);
+
+	err = 0;
+	sbinfo = au_sbi(sb);
+	path = &xiopt->file->f_path;
+	dentry = path->dentry;
+	parent = dget_parent(dentry);
+	if (remount) {
+		skip = 0;
+		cur_xino = sbinfo->si_xib;
+		if (cur_xino) {
+			cur_path = &cur_xino->f_path;
+			cur_dentry = cur_path->dentry;
+			cur_parent = dget_parent(cur_dentry);
+			cur_name = &cur_dentry->d_name;
+			dname = &dentry->d_name;
+			skip = (cur_parent == parent
+				&& au_qstreq(dname, cur_name));
+			dput(cur_parent);
+		}
+		if (skip)
+			goto out;
+	}
+
+	au_opt_set(sbinfo->si_mntflags, XINO);
+	err = au_xino_set_xib(sb, path);
+	/* si_x{read,write} are set */
+	if (!err)
+		err = au_xigen_set(sb, path);
+	if (!err)
+		err = au_xino_set_br(sb, path);
+	if (!err) {
+		dbgaufs_brs_add(sb, 0, /*topdown*/1);
+		goto out; /* success */
+	}
+
+	/* reset all */
+	AuIOErr("failed setting xino(%d).\n", err);
+	au_xino_clr(sb);
+
+out:
+	dput(parent);
+	return err;
+}
+
+/*
+ * create a xinofile at the default place/path.
+ */
+struct file *au_xino_def(struct super_block *sb)
+{
+	struct file *file;
+	char *page, *p;
+	struct au_branch *br;
+	struct super_block *h_sb;
+	struct path path;
+	aufs_bindex_t bbot, bindex, bwr;
+
+	br = NULL;
+	bbot = au_sbbot(sb);
+	bwr = -1;
+	for (bindex = 0; bindex <= bbot; bindex++) {
+		br = au_sbr(sb, bindex);
+		if (au_br_writable(br->br_perm)
+		    && !au_test_fs_bad_xino(au_br_sb(br))) {
+			bwr = bindex;
+			break;
+		}
+	}
+
+	if (bwr >= 0) {
+		file = ERR_PTR(-ENOMEM);
+		page = (void *)__get_free_page(GFP_NOFS);
+		if (unlikely(!page))
+			goto out;
+		path.mnt = au_br_mnt(br);
+		path.dentry = au_h_dptr(sb->s_root, bwr);
+		p = d_path(&path, page, PATH_MAX - sizeof(AUFS_XINO_FNAME));
+		file = (void *)p;
+		if (!IS_ERR(p)) {
+			strcat(p, "/" AUFS_XINO_FNAME);
+			AuDbg("%s\n", p);
+			file = au_xino_create(sb, p, /*silent*/0, /*wbrtop*/1);
+		}
+		free_page((unsigned long)page);
+	} else {
+		file = au_xino_create(sb, AUFS_XINO_DEFPATH, /*silent*/0,
+				      /*wbrtop*/0);
+		if (IS_ERR(file))
+			goto out;
+		h_sb = file->f_path.dentry->d_sb;
+		if (unlikely(au_test_fs_bad_xino(h_sb))) {
+			pr_err("xino doesn't support %s(%s)\n",
+			       AUFS_XINO_DEFPATH, au_sbtype(h_sb));
+			fput(file);
+			file = ERR_PTR(-EINVAL);
+		}
+	}
+
+out:
+	return file;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * initialize the xinofile for the specified branch @br
+ * at the place/path where @base_file indicates.
+ * test whether another branch is on the same filesystem or not,
+ * if found then share the xinofile with another branch.
+ */
+int au_xino_init_br(struct super_block *sb, struct au_branch *br, ino_t h_ino,
+		    struct path *base)
+{
+	int err;
+	struct au_xino_do_set_br args = {
+		.h_ino	= h_ino,
+		.br	= br
+	};
+
+	args.bshared = sbr_find_shared(sb, /*btop*/0, au_sbbot(sb),
+				       au_br_sb(br));
+	err = au_xino_do_set_br(sb, base, &args);
+	if (unlikely(err))
+		au_xino_put(br);
+
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/*
+ * get an unused inode number from bitmap
+ */
+ino_t au_xino_new_ino(struct super_block *sb)
+{
+	ino_t ino;
+	unsigned long *p, pindex, ul, pend;
+	struct au_sbinfo *sbinfo;
+	struct file *file;
+	int free_bit, err;
+
+	if (!au_opt_test(au_mntflags(sb), XINO))
+		return iunique(sb, AUFS_FIRST_INO);
+
+	sbinfo = au_sbi(sb);
+	mutex_lock(&sbinfo->si_xib_mtx);
+	p = sbinfo->si_xib_buf;
+	free_bit = sbinfo->si_xib_next_bit;
+	if (free_bit < page_bits && !test_bit(free_bit, p))
+		goto out; /* success */
+	free_bit = find_first_zero_bit(p, page_bits);
+	if (free_bit < page_bits)
+		goto out; /* success */
+
+	pindex = sbinfo->si_xib_last_pindex;
+	for (ul = pindex - 1; ul < ULONG_MAX; ul--) {
+		err = xib_pindex(sb, ul);
+		if (unlikely(err))
+			goto out_err;
+		free_bit = find_first_zero_bit(p, page_bits);
+		if (free_bit < page_bits)
+			goto out; /* success */
+	}
+
+	file = sbinfo->si_xib;
+	pend = vfsub_f_size_read(file) / PAGE_SIZE;
+	for (ul = pindex + 1; ul <= pend; ul++) {
+		err = xib_pindex(sb, ul);
+		if (unlikely(err))
+			goto out_err;
+		free_bit = find_first_zero_bit(p, page_bits);
+		if (free_bit < page_bits)
+			goto out; /* success */
+	}
+	BUG();
+
+out:
+	set_bit(free_bit, p);
+	sbinfo->si_xib_next_bit = free_bit + 1;
+	pindex = sbinfo->si_xib_last_pindex;
+	mutex_unlock(&sbinfo->si_xib_mtx);
+	ino = xib_calc_ino(pindex, free_bit);
+	AuDbg("i%lu\n", (unsigned long)ino);
+	return ino;
+out_err:
+	mutex_unlock(&sbinfo->si_xib_mtx);
+	AuDbg("i0\n");
+	return 0;
+}
+
+/* for s_op->delete_inode() */
+void au_xino_delete_inode(struct inode *inode, const int unlinked)
+{
+	int err;
+	unsigned int mnt_flags;
+	aufs_bindex_t bindex, bbot, bi;
+	unsigned char try_trunc;
+	struct au_iinfo *iinfo;
+	struct super_block *sb;
+	struct au_hinode *hi;
+	struct inode *h_inode;
+	struct au_branch *br;
+	struct au_xi_calc calc;
+	struct file *file;
+
+	AuDebugOn(au_is_bad_inode(inode));
+
+	sb = inode->i_sb;
+	mnt_flags = au_mntflags(sb);
+	if (!au_opt_test(mnt_flags, XINO)
+	    || inode->i_ino == AUFS_ROOT_INO)
+		return;
+
+	if (unlinked) {
+		au_xigen_inc(inode);
+		au_xib_clear_bit(inode);
+	}
+
+	iinfo = au_ii(inode);
+	bindex = iinfo->ii_btop;
+	if (bindex < 0)
+		return;
+
+	try_trunc = !!au_opt_test(mnt_flags, TRUNC_XINO);
+	hi = au_hinode(iinfo, bindex);
+	bbot = iinfo->ii_bbot;
+	for (; bindex <= bbot; bindex++, hi++) {
+		h_inode = hi->hi_inode;
+		if (!h_inode
+		    || (!unlinked && h_inode->i_nlink))
+			continue;
+
+		/* inode may not be revalidated */
+		bi = au_br_index(sb, hi->hi_id);
+		if (bi < 0)
+			continue;
+
+		br = au_sbr(sb, bi);
+		au_xi_calc(sb, h_inode->i_ino, &calc);
+		file = au_xino_file(br->br_xino, calc.idx);
+		if (IS_ERR_OR_NULL(file))
+			continue;
+
+		err = au_xino_do_write(file, &calc, /*ino*/0);
+		if (!err && try_trunc
+		    && au_test_fs_trunc_xino(au_br_sb(br)))
+			xino_try_trunc(sb, br);
+	}
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int au_xinondir_find(struct au_xino *xi, ino_t h_ino)
+{
+	int found, total, i;
+
+	found = -1;
+	total = xi->xi_nondir.total;
+	for (i = 0; i < total; i++) {
+		if (xi->xi_nondir.array[i] != h_ino)
+			continue;
+		found = i;
+		break;
+	}
+
+	return found;
+}
+
+static int au_xinondir_expand(struct au_xino *xi)
+{
+	int err, sz;
+	ino_t *p;
+
+	BUILD_BUG_ON(KMALLOC_MAX_SIZE > INT_MAX);
+
+	err = -ENOMEM;
+	sz = xi->xi_nondir.total * sizeof(ino_t);
+	if (unlikely(sz > KMALLOC_MAX_SIZE / 2))
+		goto out;
+	p = au_kzrealloc(xi->xi_nondir.array, sz, sz << 1, GFP_ATOMIC,
+			 /*may_shrink*/0);
+	if (p) {
+		xi->xi_nondir.array = p;
+		xi->xi_nondir.total <<= 1;
+		AuDbg("xi_nondir.total %d\n", xi->xi_nondir.total);
+		err = 0;
+	}
+
+out:
+	return err;
+}
+
+void au_xinondir_leave(struct super_block *sb, aufs_bindex_t bindex,
+		       ino_t h_ino, int idx)
+{
+	struct au_xino *xi;
+
+	AuDebugOn(!au_opt_test(au_mntflags(sb), XINO));
+	xi = au_sbr(sb, bindex)->br_xino;
+	AuDebugOn(idx < 0 || xi->xi_nondir.total <= idx);
+
+	spin_lock(&xi->xi_nondir.spin);
+	AuDebugOn(xi->xi_nondir.array[idx] != h_ino);
+	xi->xi_nondir.array[idx] = 0;
+	spin_unlock(&xi->xi_nondir.spin);
+	wake_up_all(&xi->xi_nondir.wqh);
+}
+
+int au_xinondir_enter(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino,
+		      int *idx)
+{
+	int err, found, empty;
+	struct au_xino *xi;
+
+	err = 0;
+	*idx = -1;
+	if (!au_opt_test(au_mntflags(sb), XINO))
+		goto out; /* no xino */
+
+	xi = au_sbr(sb, bindex)->br_xino;
+
+again:
+	spin_lock(&xi->xi_nondir.spin);
+	found = au_xinondir_find(xi, h_ino);
+	if (found == -1) {
+		empty = au_xinondir_find(xi, /*h_ino*/0);
+		if (empty == -1) {
+			empty = xi->xi_nondir.total;
+			err = au_xinondir_expand(xi);
+			if (unlikely(err))
+				goto out_unlock;
+		}
+		xi->xi_nondir.array[empty] = h_ino;
+		*idx = empty;
+	} else {
+		spin_unlock(&xi->xi_nondir.spin);
+		wait_event(xi->xi_nondir.wqh,
+			   xi->xi_nondir.array[found] != h_ino);
+		goto again;
+	}
+
+out_unlock:
+	spin_unlock(&xi->xi_nondir.spin);
+out:
+	return err;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int au_xino_path(struct seq_file *seq, struct file *file)
+{
+	int err;
+
+	err = au_seq_path(seq, &file->f_path);
+	if (unlikely(err))
+		goto out;
+
+#define Deleted "\\040(deleted)"
+	seq->count -= sizeof(Deleted) - 1;
+	AuDebugOn(memcmp(seq->buf + seq->count, Deleted,
+			 sizeof(Deleted) - 1));
+#undef Deleted
+
+out:
+	return err;
+}
diff -Naur --no-dereference a/fs/dcache.c b/fs/dcache.c
--- a/fs/dcache.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/dcache.c	2022-06-12 13:07:42.551111715 -0400
@@ -1320,7 +1320,7 @@
  *
  * The @enter() callbacks are called with d_lock held.
  */
-static void d_walk(struct dentry *parent, void *data,
+void d_walk(struct dentry *parent, void *data,
 		   enum d_walk_ret (*enter)(void *, struct dentry *))
 {
 	struct dentry *this_parent;
@@ -1425,6 +1425,7 @@
 	seq = 1;
 	goto again;
 }
+EXPORT_SYMBOL_GPL(d_walk);
 
 struct check_mount {
 	struct vfsmount *mnt;
@@ -2970,6 +2971,7 @@
 
 	write_sequnlock(&rename_lock);
 }
+EXPORT_SYMBOL_GPL(d_exchange);
 
 /**
  * d_ancestor - search for an ancestor
diff -Naur --no-dereference a/fs/exec.c b/fs/exec.c
--- a/fs/exec.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/exec.c	2022-06-12 13:07:42.551111715 -0400
@@ -111,6 +111,7 @@
 	return (path->mnt->mnt_flags & MNT_NOEXEC) ||
 	       (path->mnt->mnt_sb->s_iflags & SB_I_NOEXEC);
 }
+EXPORT_SYMBOL_GPL(path_noexec);
 
 #ifdef CONFIG_USELIB
 /*
diff -Naur --no-dereference a/fs/fcntl.c b/fs/fcntl.c
--- a/fs/fcntl.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/fcntl.c	2022-06-12 13:07:42.551111715 -0400
@@ -33,7 +33,7 @@
 
 #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME)
 
-static int setfl(int fd, struct file * filp, unsigned long arg)
+int setfl(int fd, struct file *filp, unsigned long arg)
 {
 	struct inode * inode = file_inode(filp);
 	int error = 0;
@@ -64,6 +64,8 @@
 
 	if (filp->f_op->check_flags)
 		error = filp->f_op->check_flags(arg);
+	if (!error && filp->f_op->setfl)
+		error = filp->f_op->setfl(filp, arg);
 	if (error)
 		return error;
 
@@ -84,6 +86,7 @@
  out:
 	return error;
 }
+EXPORT_SYMBOL_GPL(setfl);
 
 static void f_modown(struct file *filp, struct pid *pid, enum pid_type type,
                      int force)
diff -Naur --no-dereference a/fs/file_table.c b/fs/file_table.c
--- a/fs/file_table.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/file_table.c	2022-06-12 13:07:42.551111715 -0400
@@ -161,6 +161,7 @@
 	}
 	return ERR_PTR(-ENFILE);
 }
+EXPORT_SYMBOL_GPL(alloc_empty_file);
 
 /*
  * Variant of alloc_empty_file() that doesn't check and modify nr_files.
diff -Naur --no-dereference a/fs/Kconfig b/fs/Kconfig
--- a/fs/Kconfig	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/Kconfig	2022-06-12 13:07:42.551111715 -0400
@@ -312,6 +312,7 @@
 source "fs/ufs/Kconfig"
 source "fs/erofs/Kconfig"
 source "fs/vboxsf/Kconfig"
+source "fs/aufs/Kconfig"
 
 endif # MISC_FILESYSTEMS
 
diff -Naur --no-dereference a/fs/Makefile b/fs/Makefile
--- a/fs/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -138,3 +138,4 @@
 obj-$(CONFIG_EROFS_FS)		+= erofs/
 obj-$(CONFIG_VBOXSF_FS)		+= vboxsf/
 obj-$(CONFIG_ZONEFS_FS)		+= zonefs/
+obj-$(CONFIG_AUFS_FS)           += aufs/
diff -Naur --no-dereference a/fs/namespace.c b/fs/namespace.c
--- a/fs/namespace.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/namespace.c	2022-06-12 13:07:42.551111715 -0400
@@ -439,6 +439,7 @@
 	mnt_dec_writers(real_mount(mnt));
 	preempt_enable();
 }
+EXPORT_SYMBOL_GPL(__mnt_drop_write);
 
 /**
  * mnt_drop_write - give up write access to a mount
@@ -808,6 +809,13 @@
 	return mnt->mnt_ns == current->nsproxy->mnt_ns;
 }
 
+/* for aufs, CONFIG_AUFS_BR_FUSE */
+int is_current_mnt_ns(struct vfsmount *mnt)
+{
+	return check_mnt(real_mount(mnt));
+}
+EXPORT_SYMBOL_GPL(is_current_mnt_ns);
+
 /*
  * vfsmount lock must be held for write
  */
@@ -2005,6 +2013,7 @@
 	}
 	return 0;
 }
+EXPORT_SYMBOL_GPL(iterate_mounts);
 
 static void lock_mnt_tree(struct mount *mnt)
 {
diff -Naur --no-dereference a/fs/notify/group.c b/fs/notify/group.c
--- a/fs/notify/group.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/notify/group.c	2022-06-12 13:07:42.551111715 -0400
@@ -100,6 +100,7 @@
 {
 	refcount_inc(&group->refcnt);
 }
+EXPORT_SYMBOL_GPL(fsnotify_get_group);
 
 /*
  * Drop a reference to a group.  Free it if it's through.
diff -Naur --no-dereference a/fs/open.c b/fs/open.c
--- a/fs/open.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/open.c	2022-06-12 13:07:42.551111715 -0400
@@ -65,6 +65,7 @@
 	inode_unlock(dentry->d_inode);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(do_truncate);
 
 long vfs_truncate(const struct path *path, loff_t length)
 {
diff -Naur --no-dereference a/fs/proc/base.c b/fs/proc/base.c
--- a/fs/proc/base.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/proc/base.c	2022-06-12 13:07:42.551111715 -0400
@@ -2189,7 +2189,7 @@
 	rc = -ENOENT;
 	vma = find_exact_vma(mm, vm_start, vm_end);
 	if (vma && vma->vm_file) {
-		*path = vma->vm_file->f_path;
+		*path = vma_pr_or_file(vma)->f_path;
 		path_get(path);
 		rc = 0;
 	}
diff -Naur --no-dereference a/fs/proc/nommu.c b/fs/proc/nommu.c
--- a/fs/proc/nommu.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/proc/nommu.c	2022-06-12 13:07:42.551111715 -0400
@@ -40,7 +40,10 @@
 	file = region->vm_file;
 
 	if (file) {
-		struct inode *inode = file_inode(region->vm_file);
+		struct inode *inode;
+
+		file = vmr_pr_or_file(region);
+		inode = file_inode(file);
 		dev = inode->i_sb->s_dev;
 		ino = inode->i_ino;
 	}
diff -Naur --no-dereference a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
--- a/fs/proc/task_mmu.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/proc/task_mmu.c	2022-06-12 13:07:42.551111715 -0400
@@ -280,7 +280,10 @@
 	const char *name = NULL;
 
 	if (file) {
-		struct inode *inode = file_inode(vma->vm_file);
+		struct inode *inode;
+
+		file = vma_pr_or_file(vma);
+		inode = file_inode(file);
 		dev = inode->i_sb->s_dev;
 		ino = inode->i_ino;
 		pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;
@@ -1888,7 +1891,7 @@
 	struct proc_maps_private *proc_priv = &numa_priv->proc_maps;
 	struct vm_area_struct *vma = v;
 	struct numa_maps *md = &numa_priv->md;
-	struct file *file = vma->vm_file;
+	struct file *file = vma_pr_or_file(vma);
 	struct mm_struct *mm = vma->vm_mm;
 	struct mempolicy *pol;
 	char buffer[64];
diff -Naur --no-dereference a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
--- a/fs/proc/task_nommu.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/proc/task_nommu.c	2022-06-12 13:07:42.551111715 -0400
@@ -155,7 +155,10 @@
 	file = vma->vm_file;
 
 	if (file) {
-		struct inode *inode = file_inode(vma->vm_file);
+		struct inode *inode;
+
+		file = vma_pr_or_file(vma);
+		inode = file_inode(file);
 		dev = inode->i_sb->s_dev;
 		ino = inode->i_ino;
 		pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT;
diff -Naur --no-dereference a/fs/read_write.c b/fs/read_write.c
--- a/fs/read_write.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/read_write.c	2022-06-12 13:07:42.551111715 -0400
@@ -492,6 +492,7 @@
 	inc_syscr(current);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(vfs_read);
 
 static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
 {
@@ -602,6 +603,7 @@
 	file_end_write(file);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(vfs_write);
 
 /* file_ppos returns &file->f_pos or NULL if file is stream */
 static inline loff_t *file_ppos(struct file *file)
diff -Naur --no-dereference a/fs/splice.c b/fs/splice.c
--- a/fs/splice.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/splice.c	2022-06-12 13:07:42.551111715 -0400
@@ -759,20 +759,21 @@
 /*
  * Attempt to initiate a splice from pipe to file.
  */
-static long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
-			   loff_t *ppos, size_t len, unsigned int flags)
+long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+		    loff_t *ppos, size_t len, unsigned int flags)
 {
 	if (unlikely(!out->f_op->splice_write))
 		return warn_unsupported(out, "write");
 	return out->f_op->splice_write(pipe, out, ppos, len, flags);
 }
+EXPORT_SYMBOL_GPL(do_splice_from);
 
 /*
  * Attempt to initiate a splice from a file to a pipe.
  */
-static long do_splice_to(struct file *in, loff_t *ppos,
-			 struct pipe_inode_info *pipe, size_t len,
-			 unsigned int flags)
+long do_splice_to(struct file *in, loff_t *ppos,
+		  struct pipe_inode_info *pipe, size_t len,
+		  unsigned int flags)
 {
 	unsigned int p_space;
 	int ret;
@@ -795,6 +796,7 @@
 		return warn_unsupported(in, "read");
 	return in->f_op->splice_read(in, ppos, pipe, len, flags);
 }
+EXPORT_SYMBOL_GPL(do_splice_to);
 
 /**
  * splice_direct_to_actor - splices data directly between two non-pipes
diff -Naur --no-dereference a/fs/xattr.c b/fs/xattr.c
--- a/fs/xattr.c	2022-05-30 03:29:18.000000000 -0400
+++ b/fs/xattr.c	2022-06-12 13:07:42.551111715 -0400
@@ -384,6 +384,7 @@
 	*xattr_value = value;
 	return error;
 }
+EXPORT_SYMBOL_GPL(vfs_getxattr_alloc);
 
 ssize_t
 __vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name,
diff -Naur --no-dereference a/include/dt-bindings/pinctrl/omap.h b/include/dt-bindings/pinctrl/omap.h
--- a/include/dt-bindings/pinctrl/omap.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/dt-bindings/pinctrl/omap.h	2022-06-12 13:07:42.551111715 -0400
@@ -64,8 +64,8 @@
 #define OMAP3_WKUP_IOPAD(pa, val)	OMAP_IOPAD_OFFSET((pa), 0x2a00) (val)
 #define DM814X_IOPAD(pa, val)		OMAP_IOPAD_OFFSET((pa), 0x0800) (val)
 #define DM816X_IOPAD(pa, val)		OMAP_IOPAD_OFFSET((pa), 0x0800) (val)
-#define AM33XX_IOPAD(pa, val)		OMAP_IOPAD_OFFSET((pa), 0x0800) (val) (0)
-#define AM33XX_PADCONF(pa, conf, mux)	OMAP_IOPAD_OFFSET((pa), 0x0800) (conf) (mux)
+#define AM33XX_IOPAD(pa, val)		OMAP_IOPAD_OFFSET((pa), 0x0800) (val)
+#define AM33XX_PADCONF(pa, dir, mux)	OMAP_IOPAD_OFFSET((pa), 0x0800) ((dir) | (mux))
 
 /*
  * Macros to allow using the offset from the padconf physical address
diff -Naur --no-dereference a/include/linux/fs.h b/include/linux/fs.h
--- a/include/linux/fs.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/fs.h	2022-06-12 13:07:42.551111715 -0400
@@ -1381,6 +1381,7 @@
 /* can be called from interrupts */
 extern void kill_fasync(struct fasync_struct **, int, int);
 
+extern int setfl(int fd, struct file *filp, unsigned long arg);
 extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force);
 extern int f_setown(struct file *filp, unsigned long arg, int force);
 extern void f_delown(struct file *filp);
@@ -2092,6 +2093,7 @@
 	ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);
 	unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
 	int (*check_flags)(int);
+	int (*setfl)(struct file *, unsigned long);
 	int (*flock) (struct file *, int, struct file_lock *);
 	ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
 	ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
@@ -2615,6 +2617,7 @@
 extern void ihold(struct inode * inode);
 extern void iput(struct inode *);
 extern int generic_update_time(struct inode *, struct timespec64 *, int);
+extern int update_time(struct inode *, struct timespec64 *, int);
 
 /* /sys/fs */
 extern struct kobject *fs_kobj;
@@ -2778,6 +2781,7 @@
 }
 
 void emergency_thaw_all(void);
+extern int __sync_filesystem(struct super_block *, int);
 extern int sync_filesystem(struct super_block *);
 extern const struct file_operations def_blk_fops;
 extern const struct file_operations def_chr_fops;
diff -Naur --no-dereference a/include/linux/greybus/bundle.h b/include/linux/greybus/bundle.h
--- a/include/linux/greybus/bundle.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/greybus/bundle.h	2022-06-12 13:07:42.551111715 -0400
@@ -33,6 +33,8 @@
 	u8			*state;
 
 	struct list_head	links;	/* interface->bundles */
+	void *manifest_blob;
+	size_t manifest_size;
 };
 #define to_gb_bundle(d) container_of(d, struct gb_bundle, dev)
 
diff -Naur --no-dereference a/include/linux/greybus/gbphy.h b/include/linux/greybus/gbphy.h
--- a/include/linux/greybus/gbphy.h	1969-12-31 19:00:00.000000000 -0500
+++ b/include/linux/greybus/gbphy.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Greybus Bridged-Phy Bus driver
+ *
+ * Copyright 2016 Google Inc.
+ */
+
+#ifndef __GBPHY_H
+#define __GBPHY_H
+
+#include <linux/i2c.h>
+#include <linux/gpio/driver.h>
+
+struct gbphy_host {
+	struct gb_bundle *bundle;
+	struct list_head devices;
+};
+
+
+struct gb_i2c_device {
+	struct gb_connection	*connection;
+	struct gbphy_device	*gbphy_dev;
+	u32			functionality;
+	struct i2c_adapter	adapter;
+};
+
+struct gb_spilib {
+	struct gb_connection	*connection;
+	struct device		*parent;
+	struct spi_transfer	*first_xfer;
+	struct spi_transfer	*last_xfer;
+	struct spilib_ops	*ops;
+	u32			rx_xfer_offset;
+	u32			tx_xfer_offset;
+	u32			last_xfer_size;
+	unsigned int		op_timeout;
+	u16			mode;
+	u16			flags;
+	u32			bits_per_word_mask;
+	u8			num_chipselect;
+	u32			min_speed_hz;
+	u32			max_speed_hz;
+};
+struct gb_gpio_line {
+	/* The following has to be an array of line_max entries */
+	/* --> make them just a flags field */
+	u8			active:    1,
+				direction: 1,	/* 0 = output, 1 = input */
+				value:     1;	/* 0 = low, 1 = high */
+	u16			debounce_usec;
+
+	u8			irq_type;
+	bool			irq_type_pending;
+	bool			masked;
+	bool			masked_pending;
+};
+
+struct gb_gpio_controller {
+	struct gbphy_device	*gbphy_dev;
+	struct gb_connection	*connection;
+	u8			line_max;	/* max line number */
+	struct gb_gpio_line	*lines;
+	struct gpio_chip	chip;
+	struct irq_chip		irqc;
+	struct mutex		irq_lock;
+};
+
+struct gbphy_device {
+	u32 id;
+	struct greybus_descriptor_cport *cport_desc;
+	struct gb_bundle *bundle;
+	struct list_head list;
+	struct device dev;
+};
+#define to_gbphy_dev(d) container_of(d, struct gbphy_device, dev)
+
+static inline void *gb_gbphy_get_data(struct gbphy_device *gdev)
+{
+	return dev_get_drvdata(&gdev->dev);
+}
+
+static inline void gb_gbphy_set_data(struct gbphy_device *gdev, void *data)
+{
+	dev_set_drvdata(&gdev->dev, data);
+}
+
+struct gbphy_device_id {
+	__u8 protocol_id;
+};
+
+#define GBPHY_PROTOCOL(p)		\
+	.protocol_id	= (p),
+
+struct gbphy_driver {
+	const char *name;
+	int (*probe)(struct gbphy_device *,
+		     const struct gbphy_device_id *id);
+	void (*remove)(struct gbphy_device *);
+	const struct gbphy_device_id *id_table;
+
+	struct device_driver driver;
+};
+#define to_gbphy_driver(d) container_of(d, struct gbphy_driver, driver)
+
+int gb_gbphy_register_driver(struct gbphy_driver *driver,
+			     struct module *owner, const char *mod_name);
+void gb_gbphy_deregister_driver(struct gbphy_driver *driver);
+
+#define gb_gbphy_register(driver) \
+	gb_gbphy_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
+#define gb_gbphy_deregister(driver) \
+	gb_gbphy_deregister_driver(driver)
+
+/**
+ * module_gbphy_driver() - Helper macro for registering a gbphy driver
+ * @__gbphy_driver: gbphy_driver structure
+ *
+ * Helper macro for gbphy drivers to set up proper module init / exit
+ * functions.  Replaces module_init() and module_exit() and keeps people from
+ * printing pointless things to the kernel log when their driver is loaded.
+ */
+#define module_gbphy_driver(__gbphy_driver)	\
+	module_driver(__gbphy_driver, gb_gbphy_register, gb_gbphy_deregister)
+
+#ifdef CONFIG_PM
+static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev)
+{
+	struct device *dev = &gbphy_dev->dev;
+	int ret;
+
+	ret = pm_runtime_get_sync(dev);
+	if (ret < 0) {
+		dev_err(dev, "pm_runtime_get_sync failed: %d\n", ret);
+		pm_runtime_put_noidle(dev);
+		return ret;
+	}
+
+	return 0;
+}
+
+static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev)
+{
+	struct device *dev = &gbphy_dev->dev;
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+}
+
+static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev)
+{
+	pm_runtime_get_noresume(&gbphy_dev->dev);
+}
+
+static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev)
+{
+	pm_runtime_put_noidle(&gbphy_dev->dev);
+}
+#else
+static inline int gbphy_runtime_get_sync(struct gbphy_device *gbphy_dev) { return 0; }
+static inline void gbphy_runtime_put_autosuspend(struct gbphy_device *gbphy_dev) {}
+static inline void gbphy_runtime_get_noresume(struct gbphy_device *gbphy_dev) {}
+static inline void gbphy_runtime_put_noidle(struct gbphy_device *gbphy_dev) {}
+#endif
+
+#endif /* __GBPHY_H */
+
diff -Naur --no-dereference a/include/linux/greybus/greybus_manifest.h b/include/linux/greybus/greybus_manifest.h
--- a/include/linux/greybus/greybus_manifest.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/greybus/greybus_manifest.h	2022-06-12 13:07:42.551111715 -0400
@@ -23,6 +23,9 @@
 	GREYBUS_TYPE_STRING		= 0x02,
 	GREYBUS_TYPE_BUNDLE		= 0x03,
 	GREYBUS_TYPE_CPORT		= 0x04,
+	GREYBUS_TYPE_MIKROBUS		= 0x05,
+	GREYBUS_TYPE_PROPERTY		= 0x06,
+	GREYBUS_TYPE_DEVICE		= 0x07,
 };
 
 enum greybus_protocol {
@@ -151,6 +154,49 @@
 	__u8	protocol_id;	/* enum greybus_protocol */
 } __packed;
 
+/*
+ * A mikrobus descriptor is used to describe the details
+ * about the bus ocnfiguration for the add-on board
+ * connected to the mikrobus port.
+ */
+struct greybus_descriptor_mikrobus {
+	__u8 pin_state[12];
+} __packed;
+
+/*
+ * A property descriptor is used to pass named properties
+ * to device drivers through the unified device properties
+ * interface under linux/property.h
+ */
+struct greybus_descriptor_property {
+	__u8 length;
+	__u8 id;
+	__u8 propname_stringid;
+	__u8 type;
+	__u8 value[0];
+} __packed;
+
+/*
+ * A device descriptor is used to describe the
+ * details required by a add-on board device
+ * driver.
+ */
+struct greybus_descriptor_device {
+	__u8 id;
+	__u8 driver_stringid;
+	__u8 protocol;
+	__u8 reg;
+	__le32 max_speed_hz;
+	__u8 irq;
+	__u8 irq_type;
+	__u8 mode;
+	__u8 prop_link;
+	__u8 gpio_link;
+	__u8 reg_link;
+	__u8 clock_link;
+	__u8 pad[1];
+} __packed;
+
 struct greybus_descriptor_header {
 	__le16	size;
 	__u8	type;		/* enum greybus_descriptor_type */
@@ -164,6 +210,9 @@
 		struct greybus_descriptor_interface	interface;
 		struct greybus_descriptor_bundle	bundle;
 		struct greybus_descriptor_cport		cport;
+		struct greybus_descriptor_mikrobus	mikrobus;
+		struct greybus_descriptor_property	property;
+		struct greybus_descriptor_device	device;
 	};
 } __packed;
 
diff -Naur --no-dereference a/include/linux/greybus/interface.h b/include/linux/greybus/interface.h
--- a/include/linux/greybus/interface.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/greybus/interface.h	2022-06-12 13:07:42.551111715 -0400
@@ -65,6 +65,8 @@
 
 	struct work_struct mode_switch_work;
 	struct completion mode_switch_completion;
+	void *manifest_blob;
+	size_t manifest_size;
 };
 #define to_gb_interface(d) container_of(d, struct gb_interface, dev)
 
diff -Naur --no-dereference a/include/linux/lockdep.h b/include/linux/lockdep.h
--- a/include/linux/lockdep.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/lockdep.h	2022-06-12 13:07:42.551111715 -0400
@@ -248,6 +248,8 @@
 	return lock->key == key;
 }
 
+struct lock_class *lockdep_hlock_class(struct held_lock *hlock);
+
 /*
  * Acquire a lock.
  *
diff -Naur --no-dereference a/include/linux/mikrobus.h b/include/linux/mikrobus.h
--- a/include/linux/mikrobus.h	1969-12-31 19:00:00.000000000 -0500
+++ b/include/linux/mikrobus.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,207 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * mikroBUS Driver for instantiating add-on
+ * board devices with an identifier EEPROM
+ *
+ * Copyright 2020 Vaishnav M A, BeagleBoard.org Foundation.
+ */
+
+#ifndef __MIKROBUS_H
+#define __MIKROBUS_H
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/machine.h>
+#include <linux/spi/spi.h>
+#include <linux/serdev.h>
+#include <linux/property.h>
+#include <linux/greybus.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/nvmem-provider.h>
+#include <linux/greybus/gbphy.h>
+
+#define MIKROBUS_VERSION_MAJOR 0x00
+#define MIKROBUS_VERSION_MINOR 0x03
+
+#define MIKROBUS_NAME_SIZE		40
+#define MIKROBUS_PINCTRL_NAME_SIZE	20
+
+#define MIKROBUS_NUM_PINCTRL_STATE	4
+#define MIKROBUS_NUM_CS			2
+
+#define MIKROBUS_PINCTRL_PWM		0
+#define MIKROBUS_PINCTRL_UART		1
+#define MIKROBUS_PINCTRL_I2C		2
+#define MIKROBUS_PINCTRL_SPI		3
+
+#define MIKROBUS_PINCTRL_STATE_GPIO	"gpio"
+
+#define MIKROBUS_EEPROM_EXIT_ID_CMD 0xD2
+
+extern struct bus_type mikrobus_bus_type;
+extern struct device_type mikrobus_port_type;
+extern const char *MIKROBUS_PINCTRL_STR[];
+
+enum mikrobus_property_type {
+	MIKROBUS_PROPERTY_TYPE_MIKROBUS = 0x00,
+	MIKROBUS_PROPERTY_TYPE_PROPERTY	= 0x01,
+	MIKROBUS_PROPERTY_TYPE_GPIO	= 0x02,
+	MIKROBUS_PROPERTY_TYPE_U8	= 0x03,
+	MIKROBUS_PROPERTY_TYPE_U16	= 0x04,
+	MIKROBUS_PROPERTY_TYPE_U32	= 0x05,
+	MIKROBUS_PROPERTY_TYPE_U64	= 0x06,
+	MIKROBUS_PROPERTY_TYPE_REGULATOR	= 0x07,
+	MIKROBUS_PROPERTY_TYPE_CLOCK	= 0x08,
+};
+
+enum mikrobus_pin {
+	MIKROBUS_PIN_PWM	= 0x00,
+	MIKROBUS_PIN_INT	= 0x01,
+	MIKROBUS_PIN_RX		= 0x02,
+	MIKROBUS_PIN_TX		= 0x03,
+	MIKROBUS_PIN_SCL	= 0x04,
+	MIKROBUS_PIN_SDA	= 0x05,
+	MIKROBUS_PIN_MOSI	= 0x06,
+	MIKROBUS_PIN_MISO	= 0x07,
+	MIKROBUS_PIN_SCK	= 0x08,
+	MIKROBUS_PIN_CS		= 0x09,
+	MIKROBUS_PIN_RST	= 0x0A,
+	MIKROBUS_PIN_AN		= 0x0B,
+	MIKROBUS_PORT_PIN_COUNT = 0x0C,
+};
+
+enum mikrobus_pin_state {
+	MIKROBUS_STATE_INPUT		= 0x01,
+	MIKROBUS_STATE_OUTPUT_HIGH	= 0x02,
+	MIKROBUS_STATE_OUTPUT_LOW	= 0x03,
+	MIKROBUS_STATE_PWM		= 0x04,
+	MIKROBUS_STATE_SPI		= 0x05,
+	MIKROBUS_STATE_I2C		= 0x06,
+	MIKROBUS_STATE_UART		= 0x07,
+};
+
+/*
+ * board_device_info describes a single device on a mikrobus add-on
+ * board, an add-on board can present one or more device to the host
+ *
+ * @gpio_lookup: used to provide the GPIO lookup table for
+ * passing the named GPIOs to device drivers.
+ * @properties: used to provide the property_entry to pass named
+ * properties to device drivers, applicable only when driver uses
+ * device_property_read_* calls to fetch the properties.
+ * @num_gpio_resources: number of named gpio resources for the device,
+ * used mainly for gpiod_lookup_table memory allocation.
+ * @num_properties: number of custom properties for the device,
+ * used mainly for property_entry memory allocation.
+ * @protocol: used to know the type of the device and it should
+ * contain one of the values defined under 'enum greybus_class_type'
+ * under linux/greybus/greybus_manifest.h
+ * @reg: I2C address for the device, for devices on the SPI bus
+ * this field is the chip select address relative to the mikrobus
+ * port:0->device chip select connected to CS pin on mikroBUS port
+ *	1->device chip select connected to RST Pin on mikroBUS port
+ * @mode: SPI mode
+ * @max_speed_hz: SPI max speed(Hz)
+ * @drv_name: device_id to match with the driver
+ * @irq_type: type of IRQ trigger , match with defines in linux/interrupt.h
+ * @irq: irq number relative to the mikrobus port should contain one of the
+ * values defined under 'enum mikrobus_pin'
+ * @id: device id starting from 1
+ */
+struct board_device_info {
+	struct gpiod_lookup_table *gpio_lookup;
+	struct property_entry *properties;
+	struct property_entry *regulators;
+	struct property_entry *clocks;
+	struct list_head links;
+	unsigned short num_gpio_resources;
+	unsigned short num_properties;
+	unsigned short num_regulators;
+	unsigned short num_clocks;
+	unsigned short protocol;
+	unsigned short reg;
+	unsigned int mode;
+	void *dev_client;
+	u32 max_speed_hz;
+	char *drv_name;
+	int irq_type;
+	int irq;
+	int id;
+};
+
+/*
+ * addon_board_info describes a mikrobus add-on device the add-on
+ * board, an add-on board can present one or more device to the host
+ *
+ * @manifest_descs: list of manifest descriptors
+ * @devices: list of devices on the board
+ * @pin_state: the state of each pin on the mikrobus port required
+ * for the add-on board should contain one of the values defined under
+ * 'enum mikrobus_pin_state' restrictions are as per mikrobus standard
+ * specifications.
+ * @name: add-on board name
+ */
+struct addon_board_info {
+	struct list_head manifest_descs;
+	struct list_head devices;
+	u8 pin_state[MIKROBUS_PORT_PIN_COUNT];
+	char *name;
+};
+
+/*
+ * mikrobus_port describes the peripherals mapped to a
+ * mikrobus port.
+ *
+ * @eeprom_client: i2c_client corresponding to the eeprom
+ * on the add-on board.
+ * @board: pointer to the attached add-on board.
+ * @i2c_adap: I2C adapter attached to the mikrobus port.
+ * @spi_mstr: SPI master attached to the mikrobus port.
+ * @eeprom: nvmem_device for the eeprom on the add-on board.
+ * @pwm: pwm_device attached to the mikrobus port PWM pin.
+ * @pinctrl_selected: current pinctrl_selected state.
+ * @chip_select: chip select number mapped to the SPI
+ * CS pin on the mikrobus port and the RST pin on the mikrobus
+ * port
+ * @id: port id starting from 1
+ */
+struct mikrobus_port {
+	struct addon_board_info *board;
+	struct nvmem_device *eeprom;
+	struct i2c_adapter *i2c_adap;
+	struct spi_master *spi_mstr;
+	struct w1_master *w1_master;
+	struct platform_device *w1_gpio;
+	struct serdev_controller *ser_ctrl;
+	struct gpio_descs *gpios;
+	struct pwm_device *pwm;
+	struct pinctrl *pinctrl;
+	struct module *owner;
+	struct device dev;
+	char name[MIKROBUS_NAME_SIZE];
+	char *pinctrl_selected[MIKROBUS_NUM_PINCTRL_STATE];
+	unsigned int chip_select[MIKROBUS_NUM_CS];
+	int skip_scan;
+	int disable_eeprom;
+	int id;
+};
+#define to_mikrobus_port(d) container_of(d, struct mikrobus_port, dev)
+
+void mikrobus_board_unregister(struct mikrobus_port *port,
+				struct addon_board_info *board);
+int mikrobus_board_register(struct mikrobus_port *port,
+				struct addon_board_info *board);
+
+int mikrobus_port_gb_register(struct gbphy_host *host, void *manifest_blob, size_t manifest_size);
+int mikrobus_port_register(struct mikrobus_port *port);
+int mikrobus_port_pinctrl_select(struct mikrobus_port *port);
+void mikrobus_port_delete(struct mikrobus_port *port);
+int mikrobus_port_scan_eeprom(struct mikrobus_port *port);
+struct mikrobus_port *mikrobus_find_port_by_w1_master(struct w1_master *master);
+#endif /* __MIKROBUS_H */
diff -Naur --no-dereference a/include/linux/mm.h b/include/linux/mm.h
--- a/include/linux/mm.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/mm.h	2022-06-12 13:07:42.551111715 -0400
@@ -1813,6 +1813,43 @@
 	unmap_mapping_range(mapping, holebegin, holelen, 0);
 }
 
+#if IS_ENABLED(CONFIG_AUFS_FS)
+extern void vma_do_file_update_time(struct vm_area_struct *, const char[], int);
+extern struct file *vma_do_pr_or_file(struct vm_area_struct *, const char[],
+				      int);
+extern void vma_do_get_file(struct vm_area_struct *, const char[], int);
+extern void vma_do_fput(struct vm_area_struct *, const char[], int);
+
+#define vma_file_update_time(vma)	vma_do_file_update_time(vma, __func__, \
+								__LINE__)
+#define vma_pr_or_file(vma)		vma_do_pr_or_file(vma, __func__, \
+							  __LINE__)
+#define vma_get_file(vma)		vma_do_get_file(vma, __func__, __LINE__)
+#define vma_fput(vma)			vma_do_fput(vma, __func__, __LINE__)
+
+#ifndef CONFIG_MMU
+extern struct file *vmr_do_pr_or_file(struct vm_region *, const char[], int);
+extern void vmr_do_fput(struct vm_region *, const char[], int);
+
+#define vmr_pr_or_file(region)		vmr_do_pr_or_file(region, __func__, \
+							  __LINE__)
+#define vmr_fput(region)		vmr_do_fput(region, __func__, __LINE__)
+#endif /* !CONFIG_MMU */
+
+#else
+
+#define vma_file_update_time(vma)	file_update_time((vma)->vm_file)
+#define vma_pr_or_file(vma)		(vma)->vm_file
+#define vma_get_file(vma)		get_file((vma)->vm_file)
+#define vma_fput(vma)			fput((vma)->vm_file)
+
+#ifndef CONFIG_MMU
+#define vmr_pr_or_file(region)		(region)->vm_file
+#define vmr_fput(region)		fput((region)->vm_file)
+#endif /* !CONFIG_MMU */
+
+#endif /* CONFIG_AUFS_FS */
+
 extern int access_process_vm(struct task_struct *tsk, unsigned long addr,
 		void *buf, int len, unsigned int gup_flags);
 extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
diff -Naur --no-dereference a/include/linux/mm_types.h b/include/linux/mm_types.h
--- a/include/linux/mm_types.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/mm_types.h	2022-06-12 13:07:42.551111715 -0400
@@ -294,6 +294,9 @@
 	unsigned long	vm_top;		/* region allocated to here */
 	unsigned long	vm_pgoff;	/* the offset in vm_file corresponding to vm_start */
 	struct file	*vm_file;	/* the backing file or NULL */
+#if IS_ENABLED(CONFIG_AUFS_FS)
+	struct file	*vm_prfile;	/* the virtual backing file or NULL */
+#endif
 
 	int		vm_usage;	/* region usage count (access under nommu_region_sem) */
 	bool		vm_icache_flushed : 1; /* true if the icache has been flushed for
@@ -373,6 +376,9 @@
 	unsigned long vm_pgoff;		/* Offset (within vm_file) in PAGE_SIZE
 					   units */
 	struct file * vm_file;		/* File we map to (can be NULL). */
+#if IS_ENABLED(CONFIG_AUFS_FS)
+	struct file *vm_prfile;		/* shadow of vm_file */
+#endif
 	void * vm_private_data;		/* was vm_pte (shared mem) */
 
 #ifdef CONFIG_SWAP
diff -Naur --no-dereference a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h
--- a/include/linux/mnt_namespace.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/mnt_namespace.h	2022-06-12 13:07:42.551111715 -0400
@@ -7,12 +7,15 @@
 struct fs_struct;
 struct user_namespace;
 struct ns_common;
+struct vfsmount;
 
 extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
 		struct user_namespace *, struct fs_struct *);
 extern void put_mnt_ns(struct mnt_namespace *ns);
 extern struct ns_common *from_mnt_ns(struct mnt_namespace *);
 
+extern int is_current_mnt_ns(struct vfsmount *mnt);
+
 extern const struct file_operations proc_mounts_operations;
 extern const struct file_operations proc_mountinfo_operations;
 extern const struct file_operations proc_mountstats_operations;
diff -Naur --no-dereference a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
--- a/include/linux/mod_devicetable.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/mod_devicetable.h	2022-06-12 13:07:42.551111715 -0400
@@ -493,6 +493,16 @@
 	const void *data;
 };
 
+/* serdev */
+
+#define SERDEV_NAME_SIZE	32
+#define SERDEV_MODULE_PREFIX	"serdev:"
+
+struct serdev_device_id {
+	char name[SERDEV_NAME_SIZE];
+	kernel_ulong_t driver_data;
+};
+
 /* spi */
 
 #define SPI_NAME_SIZE	32
diff -Naur --no-dereference a/include/linux/serdev.h b/include/linux/serdev.h
--- a/include/linux/serdev.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/serdev.h	2022-06-12 13:07:42.551111715 -0400
@@ -7,6 +7,7 @@
 
 #include <linux/types.h>
 #include <linux/device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/termios.h>
 #include <linux/delay.h>
 
@@ -45,6 +46,7 @@
 	const struct serdev_device_ops *ops;
 	struct completion write_comp;
 	struct mutex write_lock;
+	char modalias[SERDEV_NAME_SIZE];
 };
 
 static inline struct serdev_device *to_serdev_device(struct device *d)
@@ -63,6 +65,7 @@
 	struct device_driver driver;
 	int	(*probe)(struct serdev_device *);
 	void	(*remove)(struct serdev_device *);
+	const struct serdev_device_id *id_table;
 };
 
 static inline struct serdev_device_driver *to_serdev_device_driver(struct device_driver *d)
@@ -112,6 +115,8 @@
 	return container_of(d, struct serdev_controller, dev);
 }
 
+struct serdev_controller *of_find_serdev_controller_by_node(struct device_node *node);
+
 static inline void *serdev_device_get_drvdata(const struct serdev_device *serdev)
 {
 	return dev_get_drvdata(&serdev->dev);
diff -Naur --no-dereference a/include/linux/splice.h b/include/linux/splice.h
--- a/include/linux/splice.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/splice.h	2022-06-12 13:07:42.551111715 -0400
@@ -93,4 +93,10 @@
 
 extern const struct pipe_buf_operations page_cache_pipe_buf_ops;
 extern const struct pipe_buf_operations default_pipe_buf_ops;
+
+extern long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
+			   loff_t *ppos, size_t len, unsigned int flags);
+extern long do_splice_to(struct file *in, loff_t *ppos,
+			 struct pipe_inode_info *pipe, size_t len,
+			 unsigned int flags);
 #endif
diff -Naur --no-dereference a/include/linux/w1.h b/include/linux/w1.h
--- a/include/linux/w1.h	2022-05-30 03:29:18.000000000 -0400
+++ b/include/linux/w1.h	2022-06-12 13:07:42.551111715 -0400
@@ -242,6 +242,7 @@
 
 int w1_add_master_device(struct w1_bus_master *master);
 void w1_remove_master_device(struct w1_bus_master *master);
+struct w1_master *w1_find_master_device(struct w1_bus_master *master);
 
 /**
  * struct w1_family_ops - operations for a family type
diff -Naur --no-dereference a/include/uapi/linux/aufs_type.h b/include/uapi/linux/aufs_type.h
--- a/include/uapi/linux/aufs_type.h	1969-12-31 19:00:00.000000000 -0500
+++ b/include/uapi/linux/aufs_type.h	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,452 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2005-2021 Junjiro R. Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __AUFS_TYPE_H__
+#define __AUFS_TYPE_H__
+
+#define AUFS_NAME	"aufs"
+
+#ifdef __KERNEL__
+/*
+ * define it before including all other headers.
+ * sched.h may use pr_* macros before defining "current", so define the
+ * no-current version first, and re-define later.
+ */
+#define pr_fmt(fmt)	AUFS_NAME " %s:%d: " fmt, __func__, __LINE__
+#include <linux/sched.h>
+#undef pr_fmt
+#define pr_fmt(fmt) \
+		AUFS_NAME " %s:%d:%.*s[%d]: " fmt, __func__, __LINE__, \
+		(int)sizeof(current->comm), current->comm, current->pid
+#include <linux/limits.h>
+#else
+#include <stdint.h>
+#include <sys/types.h>
+#include <limits.h>
+#endif /* __KERNEL__ */
+
+#define AUFS_VERSION	"5.15.41-20220606"
+
+/* todo? move this to linux-2.6.19/include/magic.h */
+#define AUFS_SUPER_MAGIC	('a' << 24 | 'u' << 16 | 'f' << 8 | 's')
+
+/* ---------------------------------------------------------------------- */
+
+#ifdef __KERNEL__
+#ifdef CONFIG_AUFS_BRANCH_MAX_127
+typedef int8_t aufs_bindex_t;
+#define AUFS_BRANCH_MAX 127
+#else
+typedef int16_t aufs_bindex_t;
+#ifdef CONFIG_AUFS_BRANCH_MAX_511
+#define AUFS_BRANCH_MAX 511
+#elif defined(CONFIG_AUFS_BRANCH_MAX_1023)
+#define AUFS_BRANCH_MAX 1023
+#elif defined(CONFIG_AUFS_BRANCH_MAX_32767)
+#define AUFS_BRANCH_MAX 32767
+#endif
+#endif
+
+#ifndef AUFS_BRANCH_MAX
+#error unknown CONFIG_AUFS_BRANCH_MAX value
+#endif
+#endif /* __KERNEL__ */
+
+/* ---------------------------------------------------------------------- */
+
+#define AUFS_FSTYPE		AUFS_NAME
+
+#define AUFS_ROOT_INO		2
+#define AUFS_FIRST_INO		11
+
+#define AUFS_WH_PFX		".wh."
+#define AUFS_WH_PFX_LEN		((int)sizeof(AUFS_WH_PFX) - 1)
+#define AUFS_WH_TMP_LEN		4
+/* a limit for rmdir/rename a dir and copyup */
+#define AUFS_MAX_NAMELEN	(NAME_MAX \
+				- AUFS_WH_PFX_LEN * 2	/* doubly whiteouted */\
+				- 1			/* dot */\
+				- AUFS_WH_TMP_LEN)	/* hex */
+#define AUFS_XINO_FNAME		"." AUFS_NAME ".xino"
+#define AUFS_XINO_DEFPATH	"/tmp/" AUFS_XINO_FNAME
+#define AUFS_XINO_DEF_SEC	30 /* seconds */
+#define AUFS_XINO_DEF_TRUNC	45 /* percentage */
+#define AUFS_DIRWH_DEF		3
+#define AUFS_RDCACHE_DEF	10 /* seconds */
+#define AUFS_RDCACHE_MAX	3600 /* seconds */
+#define AUFS_RDBLK_DEF		512 /* bytes */
+#define AUFS_RDHASH_DEF		32
+#define AUFS_WKQ_NAME		AUFS_NAME "d"
+#define AUFS_MFS_DEF_SEC	30 /* seconds */
+#define AUFS_MFS_MAX_SEC	3600 /* seconds */
+#define AUFS_FHSM_CACHE_DEF_SEC	30 /* seconds */
+#define AUFS_PLINK_WARN		50 /* number of plinks in a single bucket */
+
+/* pseudo-link maintenace under /proc */
+#define AUFS_PLINK_MAINT_NAME	"plink_maint"
+#define AUFS_PLINK_MAINT_DIR	"fs/" AUFS_NAME
+#define AUFS_PLINK_MAINT_PATH	AUFS_PLINK_MAINT_DIR "/" AUFS_PLINK_MAINT_NAME
+
+/* dirren, renamed dir */
+#define AUFS_DR_INFO_PFX	AUFS_WH_PFX ".dr."
+#define AUFS_DR_BRHINO_NAME	AUFS_WH_PFX "hino"
+/* whiteouted doubly */
+#define AUFS_WH_DR_INFO_PFX	AUFS_WH_PFX AUFS_DR_INFO_PFX
+#define AUFS_WH_DR_BRHINO	AUFS_WH_PFX AUFS_DR_BRHINO_NAME
+
+#define AUFS_DIROPQ_NAME	AUFS_WH_PFX ".opq" /* whiteouted doubly */
+#define AUFS_WH_DIROPQ		AUFS_WH_PFX AUFS_DIROPQ_NAME
+
+#define AUFS_BASE_NAME		AUFS_WH_PFX AUFS_NAME
+#define AUFS_PLINKDIR_NAME	AUFS_WH_PFX "plnk"
+#define AUFS_ORPHDIR_NAME	AUFS_WH_PFX "orph"
+
+/* doubly whiteouted */
+#define AUFS_WH_BASE		AUFS_WH_PFX AUFS_BASE_NAME
+#define AUFS_WH_PLINKDIR	AUFS_WH_PFX AUFS_PLINKDIR_NAME
+#define AUFS_WH_ORPHDIR		AUFS_WH_PFX AUFS_ORPHDIR_NAME
+
+/* branch permissions and attributes */
+#define AUFS_BRPERM_RW		"rw"
+#define AUFS_BRPERM_RO		"ro"
+#define AUFS_BRPERM_RR		"rr"
+#define AUFS_BRATTR_COO_REG	"coo_reg"
+#define AUFS_BRATTR_COO_ALL	"coo_all"
+#define AUFS_BRATTR_FHSM	"fhsm"
+#define AUFS_BRATTR_UNPIN	"unpin"
+#define AUFS_BRATTR_ICEX	"icex"
+#define AUFS_BRATTR_ICEX_SEC	"icexsec"
+#define AUFS_BRATTR_ICEX_SYS	"icexsys"
+#define AUFS_BRATTR_ICEX_TR	"icextr"
+#define AUFS_BRATTR_ICEX_USR	"icexusr"
+#define AUFS_BRATTR_ICEX_OTH	"icexoth"
+#define AUFS_BRRATTR_WH		"wh"
+#define AUFS_BRWATTR_NLWH	"nolwh"
+#define AUFS_BRWATTR_MOO	"moo"
+
+#define AuBrPerm_RW		1		/* writable, hardlinkable wh */
+#define AuBrPerm_RO		(1 << 1)	/* readonly */
+#define AuBrPerm_RR		(1 << 2)	/* natively readonly */
+#define AuBrPerm_Mask		(AuBrPerm_RW | AuBrPerm_RO | AuBrPerm_RR)
+
+#define AuBrAttr_COO_REG	(1 << 3)	/* copy-up on open */
+#define AuBrAttr_COO_ALL	(1 << 4)
+#define AuBrAttr_COO_Mask	(AuBrAttr_COO_REG | AuBrAttr_COO_ALL)
+
+#define AuBrAttr_FHSM		(1 << 5)	/* file-based hsm */
+#define AuBrAttr_UNPIN		(1 << 6)	/* rename-able top dir of
+						   branch. meaningless since
+						   linux-3.18-rc1 */
+
+/* ignore error in copying XATTR */
+#define AuBrAttr_ICEX_SEC	(1 << 7)
+#define AuBrAttr_ICEX_SYS	(1 << 8)
+#define AuBrAttr_ICEX_TR	(1 << 9)
+#define AuBrAttr_ICEX_USR	(1 << 10)
+#define AuBrAttr_ICEX_OTH	(1 << 11)
+#define AuBrAttr_ICEX		(AuBrAttr_ICEX_SEC	\
+				 | AuBrAttr_ICEX_SYS	\
+				 | AuBrAttr_ICEX_TR	\
+				 | AuBrAttr_ICEX_USR	\
+				 | AuBrAttr_ICEX_OTH)
+
+#define AuBrRAttr_WH		(1 << 12)	/* whiteout-able */
+#define AuBrRAttr_Mask		AuBrRAttr_WH
+
+#define AuBrWAttr_NoLinkWH	(1 << 13)	/* un-hardlinkable whiteouts */
+#define AuBrWAttr_MOO		(1 << 14)	/* move-up on open */
+#define AuBrWAttr_Mask		(AuBrWAttr_NoLinkWH | AuBrWAttr_MOO)
+
+#define AuBrAttr_CMOO_Mask	(AuBrAttr_COO_Mask | AuBrWAttr_MOO)
+
+/* #warning test userspace */
+#ifdef __KERNEL__
+#ifndef CONFIG_AUFS_FHSM
+#undef AuBrAttr_FHSM
+#define AuBrAttr_FHSM		0
+#endif
+#ifndef CONFIG_AUFS_XATTR
+#undef	AuBrAttr_ICEX
+#define AuBrAttr_ICEX		0
+#undef	AuBrAttr_ICEX_SEC
+#define AuBrAttr_ICEX_SEC	0
+#undef	AuBrAttr_ICEX_SYS
+#define AuBrAttr_ICEX_SYS	0
+#undef	AuBrAttr_ICEX_TR
+#define AuBrAttr_ICEX_TR	0
+#undef	AuBrAttr_ICEX_USR
+#define AuBrAttr_ICEX_USR	0
+#undef	AuBrAttr_ICEX_OTH
+#define AuBrAttr_ICEX_OTH	0
+#endif
+#endif
+
+/* the longest combination */
+/* AUFS_BRATTR_ICEX and AUFS_BRATTR_ICEX_TR don't affect here */
+#define AuBrPermStrSz	sizeof(AUFS_BRPERM_RW			\
+			       "+" AUFS_BRATTR_COO_REG		\
+			       "+" AUFS_BRATTR_FHSM		\
+			       "+" AUFS_BRATTR_UNPIN		\
+			       "+" AUFS_BRATTR_ICEX_SEC		\
+			       "+" AUFS_BRATTR_ICEX_SYS		\
+			       "+" AUFS_BRATTR_ICEX_USR		\
+			       "+" AUFS_BRATTR_ICEX_OTH		\
+			       "+" AUFS_BRWATTR_NLWH)
+
+typedef struct {
+	char a[AuBrPermStrSz];
+} au_br_perm_str_t;
+
+static inline int au_br_writable(int brperm)
+{
+	return brperm & AuBrPerm_RW;
+}
+
+static inline int au_br_whable(int brperm)
+{
+	return brperm & (AuBrPerm_RW | AuBrRAttr_WH);
+}
+
+static inline int au_br_wh_linkable(int brperm)
+{
+	return !(brperm & AuBrWAttr_NoLinkWH);
+}
+
+static inline int au_br_cmoo(int brperm)
+{
+	return brperm & AuBrAttr_CMOO_Mask;
+}
+
+static inline int au_br_fhsm(int brperm)
+{
+	return brperm & AuBrAttr_FHSM;
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* ioctl */
+enum {
+	/* readdir in userspace */
+	AuCtl_RDU,
+	AuCtl_RDU_INO,
+
+	AuCtl_WBR_FD,	/* pathconf wrapper */
+	AuCtl_IBUSY,	/* busy inode */
+	AuCtl_MVDOWN,	/* move-down */
+	AuCtl_BR,	/* info about branches */
+	AuCtl_FHSM_FD	/* connection for fhsm */
+};
+
+/* borrowed from linux/include/linux/kernel.h */
+#ifndef ALIGN
+#ifdef _GNU_SOURCE
+#define ALIGN(x, a)		__ALIGN_MASK(x, (typeof(x))(a)-1)
+#else
+#define ALIGN(x, a)		(((x) + (a) - 1) & ~((a) - 1))
+#endif
+#define __ALIGN_MASK(x, mask)	(((x)+(mask))&~(mask))
+#endif
+
+/* borrowed from linux/include/linux/compiler-gcc3.h */
+#ifndef __aligned
+#define __aligned(x)			__attribute__((aligned(x)))
+#endif
+
+#ifdef __KERNEL__
+#ifndef __packed
+#define __packed			__attribute__((packed))
+#endif
+#endif
+
+struct au_rdu_cookie {
+	uint64_t	h_pos;
+	int16_t		bindex;
+	uint8_t		flags;
+	uint8_t		pad;
+	uint32_t	generation;
+} __aligned(8);
+
+struct au_rdu_ent {
+	uint64_t	ino;
+	int16_t		bindex;
+	uint8_t		type;
+	uint8_t		nlen;
+	uint8_t		wh;
+	char		name[];
+} __aligned(8);
+
+static inline int au_rdu_len(int nlen)
+{
+	/* include the terminating NULL */
+	return ALIGN(sizeof(struct au_rdu_ent) + nlen + 1,
+		     sizeof(uint64_t));
+}
+
+union au_rdu_ent_ul {
+	struct au_rdu_ent __user	*e;
+	uint64_t			ul;
+};
+
+enum {
+	AufsCtlRduV_SZ,
+	AufsCtlRduV_End
+};
+
+struct aufs_rdu {
+	/* input */
+	union {
+		uint64_t	sz;	/* AuCtl_RDU */
+		uint64_t	nent;	/* AuCtl_RDU_INO */
+	};
+	union au_rdu_ent_ul	ent;
+	uint16_t		verify[AufsCtlRduV_End];
+
+	/* input/output */
+	uint32_t		blk;
+
+	/* output */
+	union au_rdu_ent_ul	tail;
+	/* number of entries which were added in a single call */
+	uint64_t		rent;
+	uint8_t			full;
+	uint8_t			shwh;
+
+	struct au_rdu_cookie	cookie;
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+/* dirren. the branch is identified by the filename who contains this */
+struct au_drinfo {
+	uint64_t ino;
+	union {
+		uint8_t oldnamelen;
+		uint64_t _padding;
+	};
+	uint8_t oldname[];
+} __aligned(8);
+
+struct au_drinfo_fdata {
+	uint32_t magic;
+	struct au_drinfo drinfo;
+} __aligned(8);
+
+#define AUFS_DRINFO_MAGIC_V1	('a' << 24 | 'd' << 16 | 'r' << 8 | 0x01)
+/* future */
+#define AUFS_DRINFO_MAGIC_V2	('a' << 24 | 'd' << 16 | 'r' << 8 | 0x02)
+
+/* ---------------------------------------------------------------------- */
+
+struct aufs_wbr_fd {
+	uint32_t	oflags;
+	int16_t		brid;
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+struct aufs_ibusy {
+	uint64_t	ino, h_ino;
+	int16_t		bindex;
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+/* error code for move-down */
+/* the actual message strings are implemented in aufs-util.git */
+enum {
+	EAU_MVDOWN_OPAQUE = 1,
+	EAU_MVDOWN_WHITEOUT,
+	EAU_MVDOWN_UPPER,
+	EAU_MVDOWN_BOTTOM,
+	EAU_MVDOWN_NOUPPER,
+	EAU_MVDOWN_NOLOWERBR,
+	EAU_Last
+};
+
+/* flags for move-down */
+#define AUFS_MVDOWN_DMSG	1
+#define AUFS_MVDOWN_OWLOWER	(1 << 1)	/* overwrite lower */
+#define AUFS_MVDOWN_KUPPER	(1 << 2)	/* keep upper */
+#define AUFS_MVDOWN_ROLOWER	(1 << 3)	/* do even if lower is RO */
+#define AUFS_MVDOWN_ROLOWER_R	(1 << 4)	/* did on lower RO */
+#define AUFS_MVDOWN_ROUPPER	(1 << 5)	/* do even if upper is RO */
+#define AUFS_MVDOWN_ROUPPER_R	(1 << 6)	/* did on upper RO */
+#define AUFS_MVDOWN_BRID_UPPER	(1 << 7)	/* upper brid */
+#define AUFS_MVDOWN_BRID_LOWER	(1 << 8)	/* lower brid */
+#define AUFS_MVDOWN_FHSM_LOWER	(1 << 9)	/* find fhsm attr for lower */
+#define AUFS_MVDOWN_STFS	(1 << 10)	/* req. stfs */
+#define AUFS_MVDOWN_STFS_FAILED	(1 << 11)	/* output: stfs is unusable */
+#define AUFS_MVDOWN_BOTTOM	(1 << 12)	/* output: no more lowers */
+
+/* index for move-down */
+enum {
+	AUFS_MVDOWN_UPPER,
+	AUFS_MVDOWN_LOWER,
+	AUFS_MVDOWN_NARRAY
+};
+
+/*
+ * additional info of move-down
+ * number of free blocks and inodes.
+ * subset of struct kstatfs, but smaller and always 64bit.
+ */
+struct aufs_stfs {
+	uint64_t	f_blocks;
+	uint64_t	f_bavail;
+	uint64_t	f_files;
+	uint64_t	f_ffree;
+};
+
+struct aufs_stbr {
+	int16_t			brid;	/* optional input */
+	int16_t			bindex;	/* output */
+	struct aufs_stfs	stfs;	/* output when AUFS_MVDOWN_STFS set */
+} __aligned(8);
+
+struct aufs_mvdown {
+	uint32_t		flags;			/* input/output */
+	struct aufs_stbr	stbr[AUFS_MVDOWN_NARRAY]; /* input/output */
+	int8_t			au_errno;		/* output */
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+union aufs_brinfo {
+	/* PATH_MAX may differ between kernel-space and user-space */
+	char	_spacer[4096];
+	struct {
+		int16_t	id;
+		int	perm;
+		char	path[];
+	};
+} __aligned(8);
+
+/* ---------------------------------------------------------------------- */
+
+#define AuCtlType		'A'
+#define AUFS_CTL_RDU		_IOWR(AuCtlType, AuCtl_RDU, struct aufs_rdu)
+#define AUFS_CTL_RDU_INO	_IOWR(AuCtlType, AuCtl_RDU_INO, struct aufs_rdu)
+#define AUFS_CTL_WBR_FD		_IOW(AuCtlType, AuCtl_WBR_FD, \
+				     struct aufs_wbr_fd)
+#define AUFS_CTL_IBUSY		_IOWR(AuCtlType, AuCtl_IBUSY, struct aufs_ibusy)
+#define AUFS_CTL_MVDOWN		_IOWR(AuCtlType, AuCtl_MVDOWN, \
+				      struct aufs_mvdown)
+#define AUFS_CTL_BRINFO		_IOW(AuCtlType, AuCtl_BR, union aufs_brinfo)
+#define AUFS_CTL_FHSM_FD	_IOW(AuCtlType, AuCtl_FHSM_FD, int)
+
+#endif /* __AUFS_TYPE_H__ */
diff -Naur --no-dereference a/kernel/fork.c b/kernel/fork.c
--- a/kernel/fork.c	2022-05-30 03:29:18.000000000 -0400
+++ b/kernel/fork.c	2022-06-12 13:07:42.551111715 -0400
@@ -573,7 +573,7 @@
 		if (file) {
 			struct address_space *mapping = file->f_mapping;
 
-			get_file(file);
+			vma_get_file(tmp);
 			i_mmap_lock_write(mapping);
 			if (tmp->vm_flags & VM_SHARED)
 				mapping_allow_writable(mapping);
diff -Naur --no-dereference a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
--- a/kernel/locking/lockdep.c	2022-05-30 03:29:18.000000000 -0400
+++ b/kernel/locking/lockdep.c	2022-06-12 13:07:42.551111715 -0400
@@ -187,7 +187,7 @@
 struct lock_class lock_classes[MAX_LOCKDEP_KEYS];
 DECLARE_BITMAP(lock_classes_in_use, MAX_LOCKDEP_KEYS);
 
-static inline struct lock_class *hlock_class(struct held_lock *hlock)
+inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock)
 {
 	unsigned int class_idx = hlock->class_idx;
 
@@ -208,6 +208,8 @@
 	 */
 	return lock_classes + class_idx;
 }
+EXPORT_SYMBOL_GPL(lockdep_hlock_class);
+#define hlock_class(hlock) lockdep_hlock_class(hlock)
 
 #ifdef CONFIG_LOCK_STAT
 static DEFINE_PER_CPU(struct lock_class_stats[MAX_LOCKDEP_KEYS], cpu_lock_stats);
diff -Naur --no-dereference a/kernel/task_work.c b/kernel/task_work.c
--- a/kernel/task_work.c	2022-05-30 03:29:18.000000000 -0400
+++ b/kernel/task_work.c	2022-06-12 13:07:42.551111715 -0400
@@ -167,3 +167,4 @@
 		} while (work);
 	}
 }
+EXPORT_SYMBOL_GPL(task_work_run);
diff -Naur --no-dereference a/MAINTAINERS b/MAINTAINERS
--- a/MAINTAINERS	2022-05-30 03:29:18.000000000 -0400
+++ b/MAINTAINERS	2022-06-12 13:07:42.547111701 -0400
@@ -3122,6 +3122,19 @@
 F:	kernel/audit*
 F:	lib/*audit.c
 
+AUFS (advanced multi layered unification filesystem) FILESYSTEM
+M:	"J. R. Okajima" <hooanon05g@gmail.com>
+L:	aufs-users@lists.sourceforge.net (members only)
+L:	linux-unionfs@vger.kernel.org
+S:	Supported
+W:	http://aufs.sourceforge.net
+T:	git://github.com/sfjro/aufs4-linux.git
+F:	Documentation/ABI/testing/debugfs-aufs
+F:	Documentation/ABI/testing/sysfs-aufs
+F:	Documentation/filesystems/aufs/
+F:	fs/aufs/
+F:	include/uapi/linux/aufs_type.h
+
 AUXILIARY DISPLAY DRIVERS
 M:	Miguel Ojeda <ojeda@kernel.org>
 S:	Maintained
diff -Naur --no-dereference a/mm/filemap.c b/mm/filemap.c
--- a/mm/filemap.c	2022-05-30 03:29:18.000000000 -0400
+++ b/mm/filemap.c	2022-06-12 13:07:42.551111715 -0400
@@ -3353,7 +3353,7 @@
 	vm_fault_t ret = VM_FAULT_LOCKED;
 
 	sb_start_pagefault(mapping->host->i_sb);
-	file_update_time(vmf->vma->vm_file);
+	vma_file_update_time(vmf->vma);
 	lock_page(page);
 	if (page->mapping != mapping) {
 		unlock_page(page);
diff -Naur --no-dereference a/mm/Makefile b/mm/Makefile
--- a/mm/Makefile	2022-05-30 03:29:18.000000000 -0400
+++ b/mm/Makefile	2022-06-12 13:07:42.551111715 -0400
@@ -130,3 +130,4 @@
 obj-$(CONFIG_IO_MAPPING) += io-mapping.o
 obj-$(CONFIG_HAVE_BOOTMEM_INFO_NODE) += bootmem_info.o
 obj-$(CONFIG_GENERIC_IOREMAP) += ioremap.o
+obj-$(CONFIG_AUFS_FS:m=y) += prfile.o
diff -Naur --no-dereference a/mm/mmap.c b/mm/mmap.c
--- a/mm/mmap.c	2022-05-30 03:29:18.000000000 -0400
+++ b/mm/mmap.c	2022-06-12 13:07:42.551111715 -0400
@@ -183,7 +183,7 @@
 	if (vma->vm_ops && vma->vm_ops->close)
 		vma->vm_ops->close(vma);
 	if (vma->vm_file)
-		fput(vma->vm_file);
+		vma_fput(vma);
 	mpol_put(vma_policy(vma));
 	vm_area_free(vma);
 	return next;
@@ -952,7 +952,7 @@
 	if (remove_next) {
 		if (file) {
 			uprobe_munmap(next, next->vm_start, next->vm_end);
-			fput(file);
+			vma_fput(vma);
 		}
 		if (next->anon_vma)
 			anon_vma_merge(vma, next);
@@ -1873,7 +1873,7 @@
 	return addr;
 
 unmap_and_free_vma:
-	fput(vma->vm_file);
+	vma_fput(vma);
 	vma->vm_file = NULL;
 
 	/* Undo any partial mapping done by a device driver. */
@@ -2723,7 +2723,7 @@
 		goto out_free_mpol;
 
 	if (new->vm_file)
-		get_file(new->vm_file);
+		vma_get_file(new);
 
 	if (new->vm_ops && new->vm_ops->open)
 		new->vm_ops->open(new);
@@ -2742,7 +2742,7 @@
 	if (new->vm_ops && new->vm_ops->close)
 		new->vm_ops->close(new);
 	if (new->vm_file)
-		fput(new->vm_file);
+		vma_fput(new);
 	unlink_anon_vmas(new);
  out_free_mpol:
 	mpol_put(vma_policy(new));
@@ -2938,6 +2938,9 @@
 	unsigned long populate = 0;
 	unsigned long ret = -EINVAL;
 	struct file *file;
+#if IS_ENABLED(CONFIG_AUFS_FS)
+	struct file *prfile;
+#endif
 
 	pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst.\n",
 		     current->comm, current->pid);
@@ -2993,10 +2996,34 @@
 	if (vma->vm_flags & VM_LOCKED)
 		flags |= MAP_LOCKED;
 
+#if IS_ENABLED(CONFIG_AUFS_FS)
+	vma_get_file(vma);
+	file = vma->vm_file;
+	prfile = vma->vm_prfile;
+	ret = do_mmap(vma->vm_file, start, size,
+			prot, flags, pgoff, &populate, NULL);
+	if (!IS_ERR_VALUE(ret) && file && prfile) {
+		struct vm_area_struct *new_vma;
+
+		new_vma = find_vma(mm, ret);
+		if (!new_vma->vm_prfile)
+			new_vma->vm_prfile = prfile;
+		if (new_vma != vma)
+			get_file(prfile);
+	}
+	/*
+	 * two fput()s instead of vma_fput(vma),
+	 * coz vma may not be available anymore.
+	 */
+	fput(file);
+	if (prfile)
+		fput(prfile);
+#else
 	file = get_file(vma->vm_file);
 	ret = do_mmap(vma->vm_file, start, size,
 			prot, flags, pgoff, &populate, NULL);
 	fput(file);
+#endif /* CONFIG_AUFS_FS */
 out:
 	mmap_write_unlock(mm);
 	if (populate)
@@ -3277,7 +3304,7 @@
 		if (anon_vma_clone(new_vma, vma))
 			goto out_free_mempol;
 		if (new_vma->vm_file)
-			get_file(new_vma->vm_file);
+			vma_get_file(new_vma);
 		if (new_vma->vm_ops && new_vma->vm_ops->open)
 			new_vma->vm_ops->open(new_vma);
 		vma_link(mm, new_vma, prev, rb_link, rb_parent);
diff -Naur --no-dereference a/mm/nommu.c b/mm/nommu.c
--- a/mm/nommu.c	2022-05-30 03:29:18.000000000 -0400
+++ b/mm/nommu.c	2022-06-12 13:07:42.551111715 -0400
@@ -523,7 +523,7 @@
 		up_write(&nommu_region_sem);
 
 		if (region->vm_file)
-			fput(region->vm_file);
+			vmr_fput(region);
 
 		/* IO memory and memory shared directly out of the pagecache
 		 * from ramfs/tmpfs mustn't be released here */
@@ -655,7 +655,7 @@
 	if (vma->vm_ops && vma->vm_ops->close)
 		vma->vm_ops->close(vma);
 	if (vma->vm_file)
-		fput(vma->vm_file);
+		vma_fput(vma);
 	put_nommu_region(vma->vm_region);
 	vm_area_free(vma);
 }
@@ -1175,7 +1175,7 @@
 					goto error_just_free;
 				}
 			}
-			fput(region->vm_file);
+			vmr_fput(region);
 			kmem_cache_free(vm_region_jar, region);
 			region = pregion;
 			result = start;
@@ -1252,10 +1252,10 @@
 	up_write(&nommu_region_sem);
 error:
 	if (region->vm_file)
-		fput(region->vm_file);
+		vmr_fput(region);
 	kmem_cache_free(vm_region_jar, region);
 	if (vma->vm_file)
-		fput(vma->vm_file);
+		vma_fput(vma);
 	vm_area_free(vma);
 	return ret;
 
diff -Naur --no-dereference a/mm/prfile.c b/mm/prfile.c
--- a/mm/prfile.c	1969-12-31 19:00:00.000000000 -0500
+++ b/mm/prfile.c	2022-06-12 13:07:42.551111715 -0400
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Mainly for aufs which mmap(2) different file and wants to print different
+ * path in /proc/PID/maps.
+ * Call these functions via macros defined in linux/mm.h.
+ *
+ * See Documentation/filesystems/aufs/design/06mmap.txt
+ *
+ * Copyright (c) 2014-2021 Junjro R. Okajima
+ * Copyright (c) 2014 Ian Campbell
+ */
+
+#include <linux/mm.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+
+/* #define PRFILE_TRACE */
+static inline void prfile_trace(struct file *f, struct file *pr,
+			      const char func[], int line, const char func2[])
+{
+#ifdef PRFILE_TRACE
+	if (pr)
+		pr_info("%s:%d: %s, %pD2\n", func, line, func2, f);
+#endif
+}
+
+void vma_do_file_update_time(struct vm_area_struct *vma, const char func[],
+			     int line)
+{
+	struct file *f = vma->vm_file, *pr = vma->vm_prfile;
+
+	prfile_trace(f, pr, func, line, __func__);
+	file_update_time(f);
+	if (f && pr)
+		file_update_time(pr);
+}
+
+struct file *vma_do_pr_or_file(struct vm_area_struct *vma, const char func[],
+			       int line)
+{
+	struct file *f = vma->vm_file, *pr = vma->vm_prfile;
+
+	prfile_trace(f, pr, func, line, __func__);
+	return (f && pr) ? pr : f;
+}
+
+void vma_do_get_file(struct vm_area_struct *vma, const char func[], int line)
+{
+	struct file *f = vma->vm_file, *pr = vma->vm_prfile;
+
+	prfile_trace(f, pr, func, line, __func__);
+	get_file(f);
+	if (f && pr)
+		get_file(pr);
+}
+
+void vma_do_fput(struct vm_area_struct *vma, const char func[], int line)
+{
+	struct file *f = vma->vm_file, *pr = vma->vm_prfile;
+
+	prfile_trace(f, pr, func, line, __func__);
+	fput(f);
+	if (f && pr)
+		fput(pr);
+}
+
+#ifndef CONFIG_MMU
+struct file *vmr_do_pr_or_file(struct vm_region *region, const char func[],
+			       int line)
+{
+	struct file *f = region->vm_file, *pr = region->vm_prfile;
+
+	prfile_trace(f, pr, func, line, __func__);
+	return (f && pr) ? pr : f;
+}
+
+void vmr_do_fput(struct vm_region *region, const char func[], int line)
+{
+	struct file *f = region->vm_file, *pr = region->vm_prfile;
+
+	prfile_trace(f, pr, func, line, __func__);
+	fput(f);
+	if (f && pr)
+		fput(pr);
+}
+#endif /* !CONFIG_MMU */
diff -Naur --no-dereference a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
--- a/scripts/Makefile.dtbinst	2022-05-30 03:29:18.000000000 -0400
+++ b/scripts/Makefile.dtbinst	2022-06-12 13:07:42.551111715 -0400
@@ -18,9 +18,10 @@
 include $(src)/Makefile
 
 dtbs    := $(addprefix $(dst)/, $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS),$(dtb-)))
+dtbos   := $(addprefix $(dst)/, $(dtbo-y) $(if $(CONFIG_OF_ALL_DTBS),$(dtb-)))
 subdirs := $(addprefix $(obj)/, $(subdir-y) $(subdir-m))
 
-__dtbs_install: $(dtbs) $(subdirs)
+__dtbs_install: $(dtbs) $(dtbos) $(subdirs)
 	@:
 
 quiet_cmd_dtb_install = INSTALL $@
diff -Naur --no-dereference a/scripts/Makefile.lib b/scripts/Makefile.lib
--- a/scripts/Makefile.lib	2022-05-30 03:29:18.000000000 -0400
+++ b/scripts/Makefile.lib	2022-06-12 13:07:42.551111715 -0400
@@ -373,6 +373,24 @@
 $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
 	$(call if_changed_rule,dtc)
 
+quiet_cmd_dtco = DTCO    $@
+cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
+	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+	$(DTC) -@ -H epapr -O dtb -o $@ -b 0 \
+		-i $(dir $<) $(DTC_FLAGS) \
+		-Wno-interrupts_property \
+		-Wno-label_is_string \
+		-Wno-reg_format \
+		-Wno-pci_device_bus_num \
+		-Wno-i2c_bus_reg \
+		-Wno-spi_bus_reg \
+		-Wno-avoid_default_addr_size \
+		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
+	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
+
+$(obj)/%.dtbo: $(src)/%.dts FORCE
+	$(call if_changed_dep,dtco)
+
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 
 # Bzip2
diff -Naur --no-dereference a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
--- a/scripts/mod/devicetable-offsets.c	2022-05-30 03:29:18.000000000 -0400
+++ b/scripts/mod/devicetable-offsets.c	2022-06-12 13:07:42.551111715 -0400
@@ -153,6 +153,9 @@
 	DEVID_FIELD(i3c_device_id, part_id);
 	DEVID_FIELD(i3c_device_id, extra_info);
 
+	DEVID(serdev_device_id);
+	DEVID_FIELD(serdev_device_id, name);
+
 	DEVID(spi_device_id);
 	DEVID_FIELD(spi_device_id, name);
 
diff -Naur --no-dereference a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
--- a/scripts/mod/file2alias.c	2022-05-30 03:29:18.000000000 -0400
+++ b/scripts/mod/file2alias.c	2022-06-12 13:07:42.551111715 -0400
@@ -960,6 +960,15 @@
 	return 1;
 }
 
+static int do_serdev_entry(const char *filename, void *symval,
+			   char *alias)
+{
+	DEF_FIELD_ADDR(symval, serdev_device_id, name);
+	sprintf(alias, SERDEV_MODULE_PREFIX "%s", *name);
+
+	return 1;
+}
+
 static const struct dmifield {
 	const char *prefix;
 	int field;
@@ -1474,6 +1483,7 @@
 	{"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
 	{"i2c", SIZE_i2c_device_id, do_i2c_entry},
 	{"i3c", SIZE_i3c_device_id, do_i3c_entry},
+	{"serdev", SIZE_serdev_device_id, do_serdev_entry},
 	{"spi", SIZE_spi_device_id, do_spi_entry},
 	{"dmi", SIZE_dmi_system_id, do_dmi_entry},
 	{"platform", SIZE_platform_device_id, do_platform_entry},
diff -Naur --no-dereference a/scripts/package/builddeb b/scripts/package/builddeb
--- a/scripts/package/builddeb	2022-05-30 03:29:18.000000000 -0400
+++ b/scripts/package/builddeb	2022-06-12 13:07:42.551111715 -0400
@@ -153,6 +153,7 @@
 	# Only some architectures with OF support have this target
 	if [ -d "${srctree}/arch/$SRCARCH/boot/dts" ]; then
 		$MAKE -f $srctree/Makefile INSTALL_DTBS_PATH="$tmpdir/usr/lib/$packagename" dtbs_install
+		$MAKE -f $srctree/Makefile INSTALL_DTBS_PATH="$tmpdir/boot/dtbs/$version" dtbs_install
 	fi
 fi
 
diff -Naur --no-dereference a/security/security.c b/security/security.c
--- a/security/security.c	2022-05-30 03:29:18.000000000 -0400
+++ b/security/security.c	2022-06-12 13:07:42.551111715 -0400
@@ -1162,6 +1162,7 @@
 		return 0;
 	return call_int_hook(path_rmdir, 0, dir, dentry);
 }
+EXPORT_SYMBOL_GPL(security_path_rmdir);
 
 int security_path_unlink(const struct path *dir, struct dentry *dentry)
 {
@@ -1178,6 +1179,7 @@
 		return 0;
 	return call_int_hook(path_symlink, 0, dir, dentry, old_name);
 }
+EXPORT_SYMBOL_GPL(security_path_symlink);
 
 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
 		       struct dentry *new_dentry)
@@ -1186,6 +1188,7 @@
 		return 0;
 	return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
 }
+EXPORT_SYMBOL_GPL(security_path_link);
 
 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
 			 const struct path *new_dir, struct dentry *new_dentry,
@@ -1213,6 +1216,7 @@
 		return 0;
 	return call_int_hook(path_truncate, 0, path);
 }
+EXPORT_SYMBOL_GPL(security_path_truncate);
 
 int security_path_chmod(const struct path *path, umode_t mode)
 {
@@ -1220,6 +1224,7 @@
 		return 0;
 	return call_int_hook(path_chmod, 0, path, mode);
 }
+EXPORT_SYMBOL_GPL(security_path_chmod);
 
 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 {
@@ -1227,6 +1232,7 @@
 		return 0;
 	return call_int_hook(path_chown, 0, path, uid, gid);
 }
+EXPORT_SYMBOL_GPL(security_path_chown);
 
 int security_path_chroot(const struct path *path)
 {
@@ -1327,6 +1333,7 @@
 		return 0;
 	return call_int_hook(inode_permission, 0, inode, mask);
 }
+EXPORT_SYMBOL_GPL(security_inode_permission);
 
 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 {
@@ -1524,6 +1531,7 @@
 
 	return fsnotify_perm(file, mask);
 }
+EXPORT_SYMBOL_GPL(security_file_permission);
 
 int security_file_alloc(struct file *file)
 {
