linux-kernel - Re: [PATCH] pinctrl: check ops->pin_config_set in pinconf_set

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Message-ID: <CACRpkda7xLrd5z=WXXbPFL+_iwZ=x5ctZGhm5yPoUurtb9Yspg@mail.gmail.com>
Date:   Mon, 7 Aug 2017 15:21:53 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] pinctrl: check ops->pin_config_set in pinconf_set_config()

On Fri, Aug 4, 2017 at 4:59 AM, Masahiro Yamada
<yamada.masahiro@...ionext.com> wrote:

> pinconf_set_config() is called by pinctrl_gpio_set_config().
> If a GPIO driver is backed by a pinctrl driver and it does not
> support .pin_config_set() hook, it causes NULL pointer dereference.
>
> Fixes: 15381bc7c7f5 ("pinctrl: Allow configuration of pins from gpiolib based drivers")
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>

Patcg applied with Mika's ACK.

Yours,
Linus Walleij