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drm/i915: Only call commit_planes when there are things to commit.

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The atomic helpers set planes_changed on a crtc_state if there is
any plane_state bound to that crtc. If there's none and there is
no pipe update required the crtc has nothing to update, so vblank
evasion can be skipped.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Maarten Lankhorst 2015-09-23 16:29:39 +02:00 committed by Daniel Vetter
parent 6285262259
commit 6173ee2886
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/intel_display.c
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@ -13153,7 +13153,8 @@ static int intel_atomic_commit(struct drm_device *dev,
if (!modeset)
intel_pre_plane_update(intel_crtc);
if (crtc->state->active)
if (crtc->state->active &&
(crtc->state->planes_changed || update_pipe))
drm_atomic_helper_commit_planes_on_crtc(crtc_state);
if (put_domains)