Re: [PATCH 2/2] gpio: use a mutex to protect the list of GPIO devices

[Linus Walleij]

On Tue, Nov 28, 2023 at 3:52 PM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:

> We don't need to lock the GPIO device or chip separately - the
> descriptor structs will stay alive as long as there's a live reference
> to the GPIO device. GPIO device will have an SRCU cookie for
> protecting API calls against removal of the chip.
>
> To summarize: one mutex for the GPIO device list, one lock per GPIO
> descriptor and SRCU protection of the GPIO device's chip.
>
> Does it make sense?

Absolutely, standing by to review, it's gonna look awesome!

Linus