drm/amd/display: Test modifier list de-duplication

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[WHAT]
Add KUnit tests for amdgpu_dm_plane_add_modifier_dedup() covering a
modifier already present in the list, which is not appended a second
time, a new modifier, which is appended, and a NULL list left over from
an earlier allocation failure, which is a no-op.

Assisted-by: Copilot:Claude-Opus-5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@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 2026-08-11 17:08:31 -06:00 • committed by Alex Deucher

parent 3dcd57191e

commit 57d69ed23e

1 changed files with 53 additions and 0 deletions

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

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