[PATCH v3 4/4] drm/i915/display: Error codes for async flip failures

[Arun R Murthy <arun.r.murthy@intel.com>]

For failures in async flip atomic check/commit path return user readable
error codes in struct drm_atomic_state.

Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index c1a3a95c65f0b66c24ddd64f47dfdc67bbde86c9..5e23f4fc747bd01fa05eba63661bf7279b083317 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5950,6 +5950,7 @@ static int intel_async_flip_check_uapi(struct intel_atomic_state *state,
 		drm_dbg_kms(display->drm,
 			    "[CRTC:%d:%s] modeset required\n",
 			    crtc->base.base.id, crtc->base.name);
+		state->base.error_code->failure_flags = DRM_MODE_ATOMIC_CRTC_NEED_FULL_MODESET;
 		return -EINVAL;
 	}
 
@@ -6019,6 +6020,7 @@ static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct in
 		drm_dbg_kms(display->drm,
 			    "[CRTC:%d:%s] modeset required\n",
 			    crtc->base.base.id, crtc->base.name);
+		state->base.error_code->failure_flags = DRM_MODE_ATOMIC_CRTC_NEED_FULL_MODESET;
 		return -EINVAL;
 	}
 
@@ -6061,6 +6063,8 @@ static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct in
 				    plane->base.base.id, plane->base.name,
 				    &new_plane_state->hw.fb->format->format,
 				    new_plane_state->hw.fb->modifier);
+			state->base.error_code->failure_flags =
+				DRM_MODE_ATOMIC_ASYNC_MODIFIER_NOT_SUPPORTED;
 			return -EINVAL;
 		}
 

-- 
2.25.1