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(parent: a717ad8) | patch
drm/amd/display: NULL pointer hang
authorQingqing Zhuo <qingqing.zhuo@amd.com>
Wed, 9 Dec 2020 23:04:04 +0000 (18:04 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Thu, 14 Jan 2021 04:42:45 +0000 (23:42 -0500)
commit33fd9cb8a267937e0902ade4cdefd8a008c93e65
tree198d14611a6f1c5cc0f05297d53b0f7ba134dacetree | snapshot
parenta717ad8ce5868eaddbc6a094df046a047ac7e910commit | diff
drm/amd/display: NULL pointer hang

[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>
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c diff | blob | history
Domain: System / Kernel;