Re: [PATCH] gpio: Move freeing of GPIO hogs before numbing of the device
From: Linus Walleij
Date: Fri Dec 30 2016 - 03:12:14 EST
On Mon, Dec 19, 2016 at 6:29 PM, Geert Uytterhoeven
> When removing a gpiochip that uses GPIO hogging (e.g. by unloading the
> chip's DT overlay), a warning is printed:
> gpio gpiochip8: REMOVING GPIOCHIP WITH GPIOS STILL REQUESTED
> This happens because gpiochip_free_hogs() is called after the gdev->chip
> pointer is reset to NULL. Hence __gpiod_free() cannot determine the
> chip in use, and cannot clear flags nor call the optional chip-specific
> .free() callback.
> Move the call to gpiochip_free_hogs() up to fix this.
> Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Patch applied to fixes and tagged for stable.