Hi,

On 3/19/26 15:06, Chen-Yu Tsai wrote:

On Thu, Mar 19, 2026 at 9:46 PM Linus Walleij [off-list ref] wrote:

quoted

On Sat, Mar 14, 2026 at 9:10 AM Michal Piekos
[off-list ref] wrote:

quoted

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 unitialized 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.

Signed-off-by: Michal Piekos <redacted>
Suggested-by: Chen-Yu Tsai <wens@kernel.org>

Should this have a Fixes: tag and should it be applied as an urgent fix?

Fixes: 01e10d0272b9 ("pinctrl: sunxi: Implement gpiochip::get_direction()")

quoted

Tag for stable?

The original patch wasn't tagged for stable. And it doesn't seem like it
was auto picked.

quoted

Also: is there consensus with Andre that this is the way to proceed?

As Andre mentioned, the mux value for "disabled" is different between
generations. So we likely need to make the value part of
|struct sunxi_pinctrl_desc|.

There is already the SUNXI_PINCTRL_NEW_REG_LAYOUT flag, which describes 
exactly that: the new layout increased the bit field to 4 bits, moving 
the HiZ value to 0xf.
But it's just a flag passed to sunxi_pinctrl_init_with_flags(), not 
stored in desc, and not available during runtime. Which is what I tried 
to fix for my A733 series:
https://lore.kernel.org/linux-arm-kernel/20250821004232.8134-3-andre.przywara@arm.com/ (local)

So maybe we can cherry-pick just this patch, then check for that flag?

Cheers,
Andre

Michal, can you respin a version so that we can get this fixed in the
same release?


ChenYu