Re: [PATCH v2 1/2] gpio: shared-proxy: always serialize with a sleeping mutex

[Viacheslav]

Hi!

26.06.2026 08:54, Marek Szyprowski wrote:
> On 25.06.2026 13:57, Viacheslav Bocharov wrote:
> > The shared GPIO descriptor used either a mutex or a spinlock, chosen at
> > runtime from the underlying chip's can_sleep:
> >
> > 	shared_desc->can_sleep = gpiod_cansleep(shared_desc->desc);
> > 	... if (can_sleep) mutex_lock(); else spin_lock_irqsave();

...

> > The lock type was added by commit a060b8c511ab ("gpiolib: implement
> > low-level, shared GPIO support"); the sleeping call under it arrived with
> > the proxy driver.
> >
> > Fixes: e992d54c6f97 ("gpio: shared-proxy: implement the shared GPIO proxy driver")
> > Reported-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> > Closes: https://lore.kernel.org/all/00107523-7737-4b92-a785-14ce4e93b8cb@xxxxxxxxxxx/
> > Signed-off-by: Viacheslav Bocharov <v@xxxxxxxxxxx>
>
>
> Tested-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>

Thanks!


Best regards
--
Viacheslav Bocharov