linux-kernel - Re: [PATCH 4/8] fbdev: sm712fb: fix boot screen glitch when sm712fb replaces VGA.

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Message-ID: <20190331121944.s67z7seyrgl5xnrw@debian>
Date:   Sun, 31 Mar 2019 13:19:44 +0100
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Yifeng Li <tomli@...li.me>
Cc:     Teddy Wang <teddy.wang@...iconmotion.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 4/8] fbdev: sm712fb: fix boot screen glitch when sm712fb
 replaces VGA.

On Sun, Mar 17, 2019 at 06:25:00AM +0800, Yifeng Li wrote:
> When the machine is booted in VGA mode, loading sm712fb would cause
> a glitch of random pixels shown on the screen. To prevent it from
> happening, we first clear the entire framebuffer, and we also need
> to stop calling smtcfb_setmode() during initialization, the fbdev
> layer will call it for us later when it's ready.
> 
> Signed-off-by: Yifeng Li <tomli@...li.me>
> Cc: stable@...r.kernel.org  # v4.4+

Tested-by: Sudip Mukherjee <sudipm.mukherjee@...il.com>

--
Regards
Sudip