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| author |   Alex Hung <alex.hung@amd.com> | 2024-06-27 20:05:14 -0600 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2024-07-23 17:07:11 -0400 |
| commit | 35ff747c86767937ee1e0ca987545b7eed7a0810 (patch) | |
| tree | 6f6b4b03c7665c8d0fedab457e3385372835562c | |
| parent | drm/amd/display: Check null pointers before using them (diff) | |
| download | wireguard-linux-35ff747c86767937ee1e0ca987545b7eed7a0810.tar.xz wireguard-linux-35ff747c86767937ee1e0ca987545b7eed7a0810.zip | |
drm/amd/display: Check stream before comparing them
[WHAT & HOW]
amdgpu_dm can pass a null stream to dc_is_stream_unchanged. It is
necessary to check for null before dereferencing them.
This fixes 1 FORWARD_NULL issue reported by Coverity.
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index bcb5267b5a6b..83aa3d8a997a 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -3241,6 +3241,8 @@ static bool are_stream_backends_same( bool dc_is_stream_unchanged( struct dc_stream_state *old_stream, struct dc_stream_state *stream) { + if (!old_stream || !stream) + return false; if (!are_stream_backends_same(old_stream, stream)) return false; |