drm/amd/display: Fix KUnit test crash after global alpha change

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[WHY]
amdgpu_dm_plane_fill_blending_from_plane_state added drm_to_adev() but
dm_test_fill_blending_global_alpha did not initialize
plane_state->plane, causing a NULL pointer dereference.

[HOW]
Add an amdgpu_device and drm_plane so the plane->dev
dereference is valid in the test.

Fixes: 829769f1cf ("drm/amd/display: scale plane global alpha to 12 bits on DCN 4.2")
Cc: PingLei.Lin@amd.com
Assisted-by: Copilot:Claude-Opus-4.6
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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Alex Hung 2026-06-16 09:47:28 -06:00 • committed by Alex Deucher

parent 829769f1cf

commit dcce6246e6

1 changed files with 7 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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