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igt@kms_selftest@drm_format_helper@.* - dmesg-fail/dmesg-warn - drm_test_fb_build_fourcc_list: ASSERTION FAILED at drivers/gpu/drm/tests/drm_format_helper_test.c:.*, Expected dev is not error, but is: -22

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_14156/shard-snb2/igt@kms_selftest@drm_format_helper@drm_format_helper_test-drm_test_fb_xrgb8888_to_xbgr8888.html#dmesg-warnings2

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<6> [196.710803] [IGT] kms_selftest: starting dynamic subtest drm_format_helper_test-drm_test_fb_xrgb8888_to_xbgr8888
<3> [196.710902] Driver 'drm-kunit-mock-device' was unable to register with bus_type 'kunit' because the bus was not initialized.
<3> [196.710970]     # drm_test_fb_build_fourcc_list: ASSERTION FAILED at drivers/gpu/drm/tests/drm_format_helper_test.c:1458
    Expected dev is not error, but is: -22
<6> [196.711172]         not ok 2 XRGB8888 as native format
<3> [196.711299] Driver 'drm-kunit-mock-device' was unable to register with bus_type 'kunit' because the bus was not initialized.
<3> [196.711398]     # drm_test_fb_build_fourcc_list: ASSERTION FAILED at drivers/gpu/drm/tests/drm_format_helper_test.c:1458
    Expected dev is not error, but is: -22
<6> [196.711589]         not ok 3 remove duplicates
<3> [196.711681] Driver 'drm-kunit-mock-device' was unable to register with bus_type 'kunit' because the bus was not initialized.
<3> [196.711749]     # drm_test_fb_build_fourcc_list: ASSERTION FAILED at drivers/gpu/drm/tests/drm_format_helper_test.c:1458
    Expected dev is not error, but is: -22
<6> [196.711888] [IGT] kms_selftest: finished subtest drm_format_helper_test-drm_test_fb_xrgb8888_to_xbgr8888, SUCCESS
<6> [196.711922]         not ok 4 convert alpha formats
<3> [196.712020] Driver 'drm-kunit-mock-device' was unable to register with bus_type 'kunit' because the bus was not initialized.
<3> [196.712086]     # drm_test_fb_build_fourcc_list: ASSERTION FAILED at drivers/gpu/drm/tests/drm_format_helper_test.c:1458
    Expected dev is not error, but is: -22
<6> [196.712265]         not ok 5 random formats
<6> [196.712269]     # drm_test_fb_build_fourcc_list: pass:0 fail:5 skip:0 total:5
<6> [196.712272]     not ok 16 drm_test_fb_build_fourcc_list
<6> [196.712277]         KTAP version 1
<6> [196.712279]         # Subtest: drm_test_fb_memcpy
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