drm/amd/display: fix bug of accessing invalid memory

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[Why]
A loop inside of build_evenly_distributed_points function that traverse through
the array of points become an infinite loop when m_GammaUpdates does not
get assigned to any value.

[How]
In DMColor, clear m_gammaIsValid bit just before writting all Zeromem for
m_GammaUpdates, to prevent calling build_evenly_distributed_points
before m_GammaUpdates gets assigned to some value.

Signed-off-by: Su Sung Chung <Su.Chung@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Su Sung Chung 2018-09-20 15:03:27 -04:00 • committed by Alex Deucher

parent 4692403047

commit 43c3ff27a4

1 changed files with 6 additions and 2 deletions

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drivers/gpu/drm/amd/display/modules/color/color_gamma.c

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