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

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Message-ID: <20170804101202.GW2369@lahna.fi.intel.com>
Date:   Fri, 4 Aug 2017 13:12:02 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     linux-gpio@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pinctrl: check ops->pin_config_set in
 pinconf_set_config()

On Fri, Aug 04, 2017 at 11:59:32AM +0900, Masahiro Yamada 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>

Acked-by: Mika Westerberg <mika.westerberg@...ux.intel.com>