drm/amd/display: Guard against invalid array access

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[Why]
There are scenarios where no OPP is assigned to an OTG so its value is
0xF which is outside the size of the OPP array causing a potential
driver crash.

[How]
Change the assert to an early return to guard against access.  If
there's no OPP assigned already, then OTG will be blank anyways so no
functionality should be lost.

Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Zhan Liu <Zhan.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Aric Cyr 2020-05-12 23:36:05 -04:00 • committed by Alex Deucher

parent 15ce104c5a

commit 245a022163

1 changed files with 10 additions and 2 deletions

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drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

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