drm/amd/display: NULL pointer hang

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[Why]
In dc_link_dp_set_test_pattern, we assume all pipes have a stream, which
can cause null pointer dereference.

[How]
Add a null pointer check before accessing stream.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Qingqing Zhuo 2020-12-09 18:04:04 -05:00 • committed by Alex Deucher

parent f14a5c34d1

commit 73644143b3

1 changed files with 7 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

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