drm/i915: Wait for vblank between disabling a sprite and unpinning the fb

When disabling a sprite, wait for the sprite to stop fetching data
from memory before unpinning the fb.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 414d325..27df5b8 100644 (file)
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -582,6 +582,8 @@ intel_disable_plane(struct drm_plane *plane)
        if (!intel_plane->obj)
                goto out;
 
+       intel_wait_for_vblank(dev, intel_plane->pipe);
+
        mutex_lock(&dev->struct_mutex);
        intel_unpin_fb_obj(intel_plane->obj);
        intel_plane->obj = NULL;