linux-kernel - Re: [PATCH 1/2] video: ssd1307fb: Use gpiod_set_value

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Message-ID: <CAOMZO5CEh-UQA=QiyWMadkpp=LcWbGs6zaaXXqa9cYQgrTLiDA@mail.gmail.com>
Date:   Wed, 19 Sep 2018 09:11:03 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Michal Vokáč <michal.vokac@...ft.com>
Cc:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        Rob Herring <robh+dt@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-fbdev@...r.kernel.org
Subject: Re: [PATCH 1/2] video: ssd1307fb: Use gpiod_set_value_cansleep() for reset

Hi Michal,

On Wed, Sep 19, 2018 at 6:18 AM, Michal Vokáč <michal.vokac@...ft.com> wrote:
> The reset signal can be produced by GPIO expander that can sleep.
> In that case the probe function fails. Allow using GPIO expanders for
> the reset signal by using the non-atomic gpiod_set_value_cansleep()
> function.
>
> Signed-off-by: Michal Vokáč <michal.vokac@...ft.com>

Reviewed-by: Fabio Estevam <fabio.estevam@....com>