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| author | Richard Chiang <Richard.Chiang@amd.com> | 2025-12-03 17:24:59 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-01-06 00:59:58 +0300 |
| commit | a8936060a01715552cac818019ca5e88201a3b7b (patch) | |
| tree | d320f2c9a86b926511d49e4a3ae479323e2f7cb0 | |
| parent | 9862d2ac667a0e731aa75c17c1b146da809bc3ae (diff) | |
| download | linux-a8936060a01715552cac818019ca5e88201a3b7b.tar.xz | |
drm/amd/display: sink EDID data null check
[Why]
When sink EDID data pointer is NULL, it will cause an
unexpected error.
[How]
Check data pointer is not NULL first.
Reviewed-by: Yihan Zhu <yihan.zhu@amd.com>
Signed-off-by: Richard Chiang <Richard.Chiang@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@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/link/link_detection.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c index 373e68cf2bde..080642dfde2a 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -623,6 +623,9 @@ static bool detect_dp(struct dc_link *link, static bool is_same_edid(struct dc_edid *old_edid, struct dc_edid *new_edid) { + if (old_edid == NULL || new_edid == NULL) + return false; + if (old_edid->length != new_edid->length) return false; |