linux-kernel - Re: [PATCH AUTOSEL 5.16 11/13] gpio: Revert regression in sysfs-gpio (gpiolib.c)

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Date:   Wed, 16 Mar 2022 17:06:09 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Marcelo Roberto Jimenez <marcelo.jimenez@...il.com>,
        Bartosz Golaszewski <brgl@...ev.pl>, linux-gpio@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.16 11/13] gpio: Revert regression in sysfs-gpio (gpiolib.c)

On Wed, Mar 16, 2022 at 3:14 PM Sasha Levin <sashal@...nel.org> wrote:

> From: Marcelo Roberto Jimenez <marcelo.jimenez@...il.com>
>
> [ Upstream commit fc328a7d1fcce263db0b046917a66f3aa6e68719 ]
>
> Some GPIO lines have stopped working after the patch
> commit 2ab73c6d8323f ("gpio: Support GPIO controllers without pin-ranges")
>
> And this has supposedly been fixed in the following patches
> commit 89ad556b7f96a ("gpio: Avoid using pin ranges with !PINCTRL")
> commit 6dbbf84603961 ("gpiolib: Don't free if pin ranges are not defined")
>
> But an erratic behavior where some GPIO lines work while others do not work
> has been introduced.
>
> This patch reverts those changes so that the sysfs-gpio interface works
> properly again.
>
> Signed-off-by: Marcelo Roberto Jimenez <marcelo.jimenez@...il.com>
> Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
> Signed-off-by: Sasha Levin <sashal@...nel.org>

I think you should not apply this for stable, because we will revert the revert.

Yours,
Linus Walleij