drm/amd/display: Test SW init and fini

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[WHAT]
Add KUnit tests for dm_sw_init() on an ASIC without a DMUB, and for the
DMUB bounding box release in dm_sw_fini().

[HOW]
An ASIC without DMUB support makes dm_dmub_sw_init() return early. The
bounding box allocation is left without a buffer object, which
amdgpu_bo_free_kernel() short-circuits.

Assisted-by: Copilot:Claude-Opus-5 GPT-5.6-Sol
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Alex Hung 2026-08-13 21:00:44 -06:00 • committed by Alex Deucher

parent bd58757973

commit 3acdc92a00

3 changed files with 54 additions and 1 deletions

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3

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

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1

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h

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51

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

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