Re: [PATCH v2 3/3] gpiolib: pin GPIO devices in place during descriptor lookup

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Tue, Jan 2, 2024 at 4:59 PM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:

> From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
>
> There's time between when we locate the relevant descriptor during
> lookup and when we actually take the reference to its parent GPIO
> device where - if the GPIO device in question is removed - we'll end up
> with a dangling pointer to freed memory. Make sure devices cannot be
> removed until we hold a new reference to the device.
>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>

Also looks right to me!
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij