Re: [PATCH v5 2/2] pinctrl: sunxi: fix gpiochip_lock_as_irq() failure when pinmux is unknown

[Chen-Yu Tsai]

On Fri, Mar 20, 2026 at 1:19 AM Michal Piekos
<michal.piekos@xxxxxxxxxxxxx> wrote:
>
> Fixes kernel hang during boot due to inability to set up IRQ on AXP313a.
>
> The issue is caused by gpiochip_lock_as_irq() which is failing when gpio
> is in uninitialized state.
>
> Solution is to set pinmux to GPIO INPUT in
> sunxi_pinctrl_irq_request_resources() if it wasn't initialized
> earlier.
>
> Tested on Orange Pi Zero 3.
>
> Fixes: 01e10d0272b9 ("pinctrl: sunxi: Implement gpiochip::get_direction()")
> Signed-off-by: Michal Piekos <michal.piekos@xxxxxxxxxxxxx>

Reviewed-by: Chen-Yu Tsai <wens@xxxxxxxxxx>