[PATCH 11/13] drm/i915: Don't try to disable plane if it's already disabled

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From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Check plane->fb in intel_disable_plane() to determine if the plane
is already disabled.

If the plane has an fb, then it must also have a crtc, so we can drop
the plane->crtc check and just call intel_enable_primary() directly.

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/intel_sprite.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index d4e0592..35acbde 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -863,8 +863,10 @@ intel_disable_plane(struct drm_plane *plane)
 	struct intel_plane *intel_plane = to_intel_plane(plane);
 	int ret = 0;
 
-	if (plane->crtc)
-		intel_enable_primary(plane->crtc);
+	if (!plane->fb)
+		return 0;
+
+	intel_enable_primary(plane->crtc);
 	intel_plane->disable_plane(plane, plane->crtc);
 
 	if (!intel_plane->obj)
-- 
1.8.1.5

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