drm/amd/display: Fix dead-code panel type detection from DID

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[Why]
In amdgpu_dm_set_panel_type() the DID fallback branch tested and wrote
link->panel_type, while the rest of the function tracked the result in
the local variable panel_type. The final assignment unconditionally
overwrites link->panel_type from panel_type, so the value derived from
DID was always discarded, making the DID branch dead code.

[How]
Use the local panel_type variable in the DID fallback branch so that the
DID result participates in the source priority (VSDB -> DPCD -> DID ->
vendor luminance heuristic -> LCD default) and is preserved by the final
assignment.

Assisted-by: Copilot:Claude-Opus-4.8
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Chenyu Chen 2026-06-22 16:25:09 +08:00 • committed by Alex Deucher

parent 8fa813b7fd

commit 560cb7437c

1 changed files with 3 additions and 3 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c

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