From 2ada95ccdf85f7ff82000dcf028659eb178ea50f Mon Sep 17 00:00:00 2001 From: Sander Vanheule Date: Sun, 20 Feb 2022 19:50:38 +0100 Subject: [PATCH] realtek: ZyXEL GS1900-48: drop gpio-restart GPIO 5 on the RTL8231 is defined reset the system, but fails to actually do so. This triggers a kernel a number of warnings and backtrace for GPIO pins that can sleep, such as the RTL8231's. Two warnings are emitted by libgpiod, and a third warning by gpio-restart itself after it fails to restart the system: [ 106.654008] ------------[ cut here ]------------ [ 106.659240] WARNING: CPU: 0 PID: 4279 at drivers/gpio/gpiolib.c:3098 gpiod_set_value+0x7c/0x108 [ Stack dump and call trace ] [ 106.826218] ---[ end trace d1de50b401f5a153 ]--- [ 106.962992] ------------[ cut here ]------------ [ 106.968208] WARNING: CPU: 0 PID: 4279 at drivers/gpio/gpiolib.c:3098 gpiod_set_value+0x7c/0x108 [ Stack dump and call trace ] [ 107.136718] ---[ end trace d1de50b401f5a154 ]--- [ 111.087092] ------------[ cut here ]------------ [ 111.092271] WARNING: CPU: 0 PID: 4279 at drivers/power/reset/gpio-restart.c:46 gpio_restart_notify+0xc0/0xdc [ Stack dump and call trace ] [ 111.256629] ---[ end trace d1de50b401f5a155 ]--- By removing gpio-restart from this device, we skip the restart-by-GPIO attempt and rely only on the watchdog for restarts, which is already the de facto behaviour. Signed-off-by: Sander Vanheule --- target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dts | 5 ----- 1 file changed, 5 deletions(-) diff --git a/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dts b/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dts index c7ddd8313a..f049274889 100644 --- a/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dts +++ b/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dts @@ -39,11 +39,6 @@ gpio-controller; }; - gpio-restart { - compatible = "gpio-restart"; - gpios = <&gpio1 5 GPIO_ACTIVE_LOW>; - }; - keys { compatible = "gpio-keys-polled"; poll-interval = <20>; -- 2.30.2