drm/amd/display: Cover crtc duplicate_state stream and null guard

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[why]
The duplicate_state stream-reference and NULL-state guard paths in
amdgpu_dm_crtc_duplicate_state were not exercised by the KUnit suite.

[how]
Added dm_test_crtc_duplicate_state_retains_stream to verify the duplicated
state keeps the stream pointer and takes an extra reference that is dropped
on destroy, and dm_test_crtc_duplicate_state_null_state_returns_null to
verify the WARN_ON guard returns NULL. Registered both cases in
amdgpu_dm_crtc_tests.

Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Bhawanpreet Lakha 2026-07-23 14:09:50 -04:00 • committed by Alex Deucher

parent 41eca7350d

commit 29d303de76

1 changed files with 61 additions and 0 deletions

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

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