diff options
| author |   Alex Hung <alex.hung@amd.com> | 2024-06-27 17:38:16 -0600 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2024-07-23 17:07:11 -0400 |
| commit | 1ff12bcd7deaeed25efb5120433c6a45dd5504a8 (patch) | |
| tree | 6337db4fcca1313897c77416b5c795e5ed360db6 /drivers/gpu | |
| parent | drm/amd/display: Pass non-null to dcn20_validate_apply_pipe_split_flags (diff) | |
| download | wireguard-linux-1ff12bcd7deaeed25efb5120433c6a45dd5504a8.tar.xz wireguard-linux-1ff12bcd7deaeed25efb5120433c6a45dd5504a8.zip | |
drm/amd/display: Check null pointers before using them
[WHAT & HOW]
These pointers are null checked previously in the same function,
indicating they might be null as reported by Coverity. As a result,
they need to be checked when used again.
This fixes 3 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>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index ea1e2d8dcd8c..92774a871e98 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -7195,6 +7195,9 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, int requested_bpc = drm_state ? drm_state->max_requested_bpc : 8; enum dc_status dc_result = DC_OK; + if (!dm_state) + return NULL; + do { stream = create_stream_for_sink(connector, drm_mode, dm_state, old_stream, @@ -9302,7 +9305,7 @@ static void amdgpu_dm_commit_streams(struct drm_atomic_state *state, if (acrtc) old_crtc_state = drm_atomic_get_old_crtc_state(state, &acrtc->base); - if (!acrtc->wb_enabled) + if (!acrtc || !acrtc->wb_enabled) continue; dm_old_crtc_state = to_dm_crtc_state(old_crtc_state); @@ -9706,9 +9709,10 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) DRM_INFO("[HDCP_DM] hdcp_update_display enable_encryption = %x\n", enable_encryption); - hdcp_update_display( - adev->dm.hdcp_workqueue, aconnector->dc_link->link_index, aconnector, - new_con_state->hdcp_content_type, enable_encryption); + if (aconnector->dc_link) + hdcp_update_display( + adev->dm.hdcp_workqueue, aconnector->dc_link->link_index, aconnector, + new_con_state->hdcp_content_type, enable_encryption); } } |