Re: [PATCH v3] gpio: vf610: add locking to gpio direction functions

[Bartosz Golaszewski <brgl@xxxxxxxx>]

From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>


On Mon, 17 Feb 2025 10:16:43 +0100, Johan Korsnes wrote:
> Add locking to `vf610_gpio_direction_input|output()` functions. Without
> this locking, a race condition exists between concurrent calls to these
> functions, potentially leading to incorrect GPIO direction settings.
> 
> To verify the correctness of this fix, a `trylock` patch was applied,
> where after a couple of reboots the race was confirmed. I.e., one user
> had to wait before acquiring the lock. With this patch the race has not
> been encountered. It's worth mentioning that any type of debugging
> (printing, tracing, etc.) would "resolve"/hide the issue.
> 
> [...]

Applied, thanks!

[1/1] gpio: vf610: add locking to gpio direction functions
      commit: 4e667a1968099c6deadee2313ecd648f8f0a8956

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>