linux-kernel - Re: [PATCH] gpio: mockup: fix a potential crash when creating debugfs entries

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Message-ID: <CACRpkdZyjKJXfqKkiqWAmYoqLW5i28HTaRRsx_a1jk076cJdmg@mail.gmail.com>
Date:   Tue, 27 Mar 2018 15:14:01 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Bamvor Jian Zhang <bamvor.zhangjian@...aro.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio: mockup: fix a potential crash when creating debugfs entries

On Sun, Mar 4, 2018 at 1:45 PM, Bartosz Golaszewski <brgl@...ev.pl> wrote:

> If we failed to create the top debugfs directory, we must not try to
> create the child nodes. We currently only check if gpio_mockup_dbg_dir
> is not NULL, but it can also contain an errno if debugfs is disabled
> in build options. Use IS_ERR_OR_NULL() instead.
>
> Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>

Patch applied.

Yours,
Linus Walleij