[Intel-gfx] [PATCH 17/18] drm/i915: Only commit planes on crtc's that have changed planes.

[Maarten Lankhorst]

No point in applying vblank evasion if there's nothing to evade.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ce031dd75649..6189ae3d3f9e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -13308,7 +13308,10 @@ static int intel_atomic_commit(struct drm_device *dev,
 		if (!modeset)
 			intel_pre_plane_update(intel_crtc);
 
-		drm_atomic_helper_commit_planes_on_crtc(crtc_state);
+		if (crtc->state->planes_changed ||
+		    to_intel_crtc_state(crtc->state)->update_pipe)
+			drm_atomic_helper_commit_planes_on_crtc(crtc_state);
+
 		intel_post_plane_update(intel_crtc);
 	}
 
-- 
2.1.0