[PATCH] ath79: increase the rfkill debounce interval for TP-Link Archer C7 v2

[Rosen Penev]

On Fri, Jul 14, 2023 at 8:12 AM Shiji Yang <yangshiji66 at outlook.com> wrote:
>
> From: Shiji Yang <yangshiji66 at qq.com>
>
> Due to circuit issue or silicon defect, sometimes the WiFi switch button
> of the Archer C7 v2 can be accidentally triggered multiple times in one
> second. This will cause WiFi to be unexpectedly shut down and trigger
> 'irq 23: nobody cared'[1] warning. Increasing the key debounce interval
> to 1000 ms can fix this issue. This patch also add the missing rfkill
> key label.
Crazy. I was wondering why 2.4ghz went away. For 5ghz I understand,
ath10k is gartbo, but 2.4ghz I didn't.
>
> [1] Warning Log:
> ```
> [87765.218511] irq 23: nobody cared (try booting with the "irqpoll" option)
> [87765.225331] CPU: 0 PID: 317 Comm: irq/23-keys Not tainted 5.15.118 #0
> ...
> [87765.486246] handlers:
> [87765.488543] [<85257547>] 0x800c29a0 threaded [<5c6328a2>] 0x80ffe0b8 [gpio_button_hotplug at 4cf73d00+0x1a00]
> [87765.498364] Disabling IRQ #23
> ```
>
> Fixes: https://github.com/openwrt/openwrt/issues/13010
> Fixes: https://github.com/openwrt/openwrt/issues/12167
> Fixes: https://github.com/openwrt/openwrt/issues/11191
> Fixes: https://github.com/openwrt/openwrt/issues/7835
>
> Tested-by: Hans Hasert
> Signed-off-by: Shiji Yang <yangshiji66 at qq.com>
> ---
>  target/linux/ath79/dts/qca9558_tplink_archer-c7-v2.dts | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/target/linux/ath79/dts/qca9558_tplink_archer-c7-v2.dts b/target/linux/ath79/dts/qca9558_tplink_archer-c7-v2.dts
> index b7ac902003..1b860dbf2d 100644
> --- a/target/linux/ath79/dts/qca9558_tplink_archer-c7-v2.dts
> +++ b/target/linux/ath79/dts/qca9558_tplink_archer-c7-v2.dts
> @@ -13,10 +13,11 @@
>
>  &keys {
>         rfkill {
> +               label = "rfkill";
>                 gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
>                 linux,code = <KEY_RFKILL>;
>                 linux,input-type = <EV_SW>;
> -               debounce-interval = <60>;
> +               debounce-interval = <1000>;
>         };
>  };
>
> --
> 2.30.2
>
>
> _______________________________________________
> openwrt-devel mailing list
> openwrt-devel at lists.openwrt.org
> https://lists.openwrt.org/mailman/listinfo/openwrt-devel