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In-Reply-To: <20150511124649.1221e86e@hyperion>
References: <20150511124649.1221e86e@hyperion>
Date: Tue, 12 May 2015 13:50:26 +0200
Message-ID: <CACRpkdaXBjvdi+-Lbtibgdi1vRjSfgKzb+8Y+6Wk0YE=CcFz_Q@mail.gmail.com>
Subject: Re: [PATCH] gpio: gpio-kempld: Fix get_direction return value
From: Linus Walleij <linus.walleij@linaro.org>
To: Michael Brunner <mibru@gmx.de>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Alexandre Courbot <gnurou@gmail.com>,
        "linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
        Jochen Henneberg <jh@henneberg-systemdesign.com>,
        Michael Brunner <michael.brunner@kontron.com>,
        Darren Hart <dvhart@linux.intel.com>,
        Kevin Strasser <kevin.strasser@linux.intel.com>,
        Guenter Roeck <linux@roeck-us.net>
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Sender: linux-kernel-owner@vger.kernel.org
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On Mon, May 11, 2015 at 12:46 PM, Michael Brunner <mibru@gmx.de> wrote:

> This patch fixes an inverted return value of the gpio get_direction
> function.
>
> The wrong value causes the direction sysfs entry and GPIO debugfs file
> to indicate incorrect GPIO direction settings. In some cases it also
> prevents setting GPIO output values.
>
> The problem is also present in all other stable kernel versions since
> linux-3.12.
>
> Reported-by: Jochen Henneberg <jh@henneberg-systemdesign.com>
> Signed-off-by: Michael Brunner <michael.brunner@kontron.com>

Patch applied and tagged for stable v3.12+

Yours,
Linus Walleij
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