From: Ville Syrjälä <[email protected]>

Write the PLANE_SURF register instead of PLANE_CTL to arm the double
buffer regisrter update.

Signed-off-by: Ville Syrjälä <[email protected]>
---
 drivers/gpu/drm/i915/intel_sprite.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_sprite.c 
b/drivers/gpu/drm/i915/intel_sprite.c
index 5a7662e..4302f21 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -301,8 +301,8 @@ skl_disable_plane(struct drm_plane *drm_plane, struct 
drm_crtc *crtc)
        I915_WRITE(PLANE_CTL(pipe, plane), 0);
 
        /* Activate double buffered register update */
-       I915_WRITE(PLANE_CTL(pipe, plane), 0);
-       POSTING_READ(PLANE_CTL(pipe, plane));
+       I915_WRITE(PLANE_SURF(pipe, plane), 0);
+       POSTING_READ(PLANE_SURF(pipe, plane));
 
        intel_update_sprite_watermarks(drm_plane, crtc, 0, 0, 0, false, false);
 }
-- 
2.0.5

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