From: Alex Hung <alex.hung@xxxxxxx>
[Why & How]
This fixes kernel errors when IGT disables primary planes during the
tests kms_universal_plane::functional_test_pipe/pageflip_test_pipe.
Acked-by: Wayne Lin <wayne.lin@xxxxxxx>
Signed-off-by: Alex Hung <alex.hung@xxxxxxx>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
index c89594f3a5cb..099a226407a3 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
@@ -376,18 +376,6 @@ static int dm_crtc_helper_atomic_check(struct drm_crtc *crtc,
return ret;
}
- /*
- * We require the primary plane to be enabled whenever the CRTC is, otherwise
- * drm_mode_cursor_universal may end up trying to enable the cursor plane while all other
- * planes are disabled, which is not supported by the hardware. And there is legacy
- * userspace which stops using the HW cursor altogether in response to the resulting EINVAL.
- */
- if (crtc_state->enable &&
- !(crtc_state->plane_mask & drm_plane_mask(crtc->primary))) {
- DRM_DEBUG_ATOMIC("Can't enable a CRTC without enabling the primary plane\n");
- return -EINVAL;
- }
-
/* In some use cases, like reset, no stream is attached */
if (!dm_crtc_state->stream)
return 0;
--
2.37.3
