drm/amd/display: Fix KUnit writeback warnings

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[WHY]
Writeback mode tests call drm_mode_probed_add without holding
mode_config.mutex, producing a warning for every generated mode.

[HOW]
Hold the mutex around writeback mode enumeration and release it before
checking the returned count or inspecting the generated modes.

Assisted-by: Copilot:GPT-6-Astra
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Zhang <george.zhang@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Alex Hung 2026-09-10 10:28:11 -06:00 • committed by Alex Deucher

parent 2e6d5212d4

commit 47a84adcad

1 changed files with 4 additions and 0 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_wb_test.c

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