Re: [PATCH] gpio: cdev: don't report GPIOs requested as interrupts as used

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Thu, Oct 31, 2024 at 9:08 PM Bartosz Golaszewski <brgl@xxxxxxxx> wrote:

> From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
>
> GPIOs used as shared irqs can still be requested by user-space (or
> kernel drivers for that matter) yet we report them as used over the
> chardev ABI. Drop the test for FLAG_USED_AS_IRQ from
> gpio_desc_to_lineinfo().
>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>

I think at the time this was added to not let userspace meddle with
such GPIO lines since they were used for "something" in the kernel.
(Userspace as second-class citizen.)

But I guess this is fine:
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij