drm/amd/display: Test colorop error paths

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[WHAT]
Add KUnit tests for the failure paths of
amdgpu_dm_build_default_pipeline(): a failed allocation and a failed
initialization at each of the eight pipeline steps.

[HOW]
Add struct amdgpu_dm_colorop_kunit_ops, a KUnit-only indirection table
for the colorop allocation and the five DRM colorop constructors. The
constructors cannot be made to fail through their arguments, so tests
install a fake allocator and spies that delegate to the real
constructors and override the return value of one selected call.
Non-KUnit builds call the same functions directly.

Assisted-by: Copilot:Claude-Opus-5
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 16:29:48 -06:00 • committed by Alex Deucher

parent 4b6281959e

commit 34da32ffe3

3 changed files with 312 additions and 58 deletions

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110

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

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28

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

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232

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

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