Kunit drm_test_check_plane_state: EXPECTATION FAILED at drivers/gpu/drm/tests/drm_plane_helper_test.c:123

[Maxime Ripard]

Hi Naresh,

Thanks for the report

On Mon, Dec 04, 2023 at 11:05:36PM +0530, Naresh Kamboju wrote:
> The Kunit drm_plane_helper failed on all devices running Linux next-20231204
> 
> ## Test Regressions (compared to next-20231201)
> * qemu-armv7, kunit and
> * x86, kunit
>   - drm_test_check_invalid_plane_state_downscaling_invalid
>   - drm_test_check_invalid_plane_state_drm_plane_helper
>   - drm_test_check_invalid_plane_state_drm_test_check_invalid_plane_state
>   - drm_test_check_invalid_plane_state_positioning_invalid
>   - drm_test_check_invalid_plane_state_upscaling_invalid
>   - drm_test_check_plane_state_clipping_rotate_reflect
>   - drm_test_check_plane_state_clipping_simple
>   - drm_test_check_plane_state_downscaling
>   - drm_test_check_plane_state_drm_test_check_plane_state
>   - drm_test_check_plane_state_positioning_simple
>   - drm_test_check_plane_state_rounding1
>   - drm_test_check_plane_state_rounding2
>   - drm_test_check_plane_state_rounding3
>   - drm_test_check_plane_state_rounding4
>   - drm_test_check_plane_state_upscaling

I found the source of failure to be f1e75da5364e ("drm/atomic: Loosen FB
atomic checks").

Fortunately for us, it's already been reverted yesterday for some
unrelated reason, so it should be fixed in next-20231205 onward.

Maxime
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