linux-kernel - Re: [PATCH v1 1/3] drm/tegra: plane: Fix RGB565 plane format on older Tegra's

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Date:   Thu, 15 Mar 2018 11:27:00 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/3] drm/tegra: plane: Fix RGB565 plane format on
 older Tegra's

On Thu, Mar 15, 2018 at 04:00:23AM +0300, Dmitry Osipenko wrote:
> Simplify opaque format adjustment by removing format checking. There are
> only 4 formats that require the adjustment and so this way is less error
> prone, avoiding mishandling native formats, like in this case RGB565 is
> the format that was erroneously treated as invalid.
> 
> Fixes: ebae8d07435a ("drm/tegra: dc: Implement legacy blending")
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/gpu/drm/tegra/dc.c    | 11 ++---------
>  drivers/gpu/drm/tegra/plane.c | 21 ++++++---------------
>  drivers/gpu/drm/tegra/plane.h |  2 +-
>  3 files changed, 9 insertions(+), 25 deletions(-)

I've applied a slightly different version of this which doesn't rework
as much of the surrounding code and is therefore easier to backport to
v4.16.

Thierry

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