drm/amd/display: Cover crtc destroy callback

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[why]
The amdgpu_dm_crtc_destroy() .destroy callback, which runs
drm_crtc_cleanup() and frees the CRTC, was not exercised by the KUnit
suite.

[how]
Exposed amdgpu_dm_crtc_destroy() via STATIC_IFN_KUNIT/EXPORT_IF_KUNIT and a
KUnit-only declaration, and added dm_test_crtc_destroy_cleans_up_and_frees
which initializes a CRTC with a primary plane and verifies
mode_config.num_crtc drops from 1 to 0 after destroy. Registered the case
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 14:33:24 -04:00 • committed by Alex Deucher

parent 29d303de76

commit b40f65c125

3 changed files with 46 additions and 1 deletions

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3

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

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1

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

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43

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

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