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| author | Alex Hung <alex.hung@amd.com> | 2025-02-19 07:14:47 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-03-05 18:39:35 +0300 |
| commit | 02b2c97824df69f5a8618b28fcb7060be6166436 (patch) | |
| tree | 27e1ad59c5795ba91bf468c333f18c74bfc1b32f | |
| parent | 79fc4e856ea8f62ff7a46cd0ce5ad3a895d39298 (diff) | |
| download | linux-02b2c97824df69f5a8618b28fcb7060be6166436.tar.xz | |
drm/amd/display: Check NULL connector before it is used
[Why & How]
amdgpu_dm_find_first_crtc_matching_connector can return NULL.
It is necessary to the returned connector before passing it
drm_atomic_get_new_connector_state which always assumes connector is
not NULL.
Reviewed-by: Roman Li <roman.li@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@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/amdgpu_dm/amdgpu_dm_mst_types.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 056b17198956..7ceedf626d23 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -1632,6 +1632,9 @@ int pre_validate_dsc(struct drm_atomic_state *state, connector = amdgpu_dm_find_first_crtc_matching_connector(state, state->crtcs[ind].ptr); + if (!connector) + continue; + drm_new_conn_state = drm_atomic_get_new_connector_state(state, connector); |