linux-kernel - Re: [v1] video:fbdev:cobalt_lcdfb:- Handle return NULL error from devm

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Message-id: <2521746.Pc0WRFopsW@amdc3058>
Date:   Wed, 04 Jan 2017 13:41:49 +0100
From:   Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:     Yuasa Yoichi <yuasa@...ux-mips.org>,
        Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     tomi.valkeinen@...com, ralf@...ux-mips.org, paul.burton@...tec.com,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [v1] video:fbdev:cobalt_lcdfb:- Handle return NULL error from
 devm_ioremap


Hi,

On Wednesday, December 14, 2016 11:23:07 AM Yuasa Yoichi wrote:
> Hi Arvind,
> 
> Thank you for fixing it.
> 
> Acked-by: Yoichi Yuasa <yuasa@...ux-mips.org>
> 
> 2016-12-13 17:20 GMT+09:00 Arvind Yadav <arvind.yadav.cs@...il.com>:
> > Here, If devm_ioremap will fail. It will return NULL.
> > Kernel can run into a NULL-pointer dereference.
> > This error check will avoid NULL pointer dereference.
> >
> > Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>

Applied & queued for v4.10.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics