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drm/amd/display: Check null pointers before using them

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[WHAT & HOW]
dc_link is null checked previously in the same function, indicating it
might be null as reported by Coverity.

This fixes 1 FORWARD_NULL issue reported by Coverity.

Signed-off-by: Alex Hung <alex.hung@amd.com>
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Hung 2024-07-15 10:24:58 -06:00 committed by Alex Deucher
parent 3f96f545f8
commit 722e96c99f
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -12083,7 +12083,8 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
}
}
as_type = dm_get_adaptive_sync_support_type(amdgpu_dm_connector->dc_link);
if (amdgpu_dm_connector->dc_link)
as_type = dm_get_adaptive_sync_support_type(amdgpu_dm_connector->dc_link);
if (as_type == FREESYNC_TYPE_PCON_IN_WHITELIST) {
i = parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);