struct drm_i915_gem_object *obj = front->obj;
        struct i915_vma *vma;
  
 +      drm_WARN_ON(obj->base.dev, atomic_read(&front->bits));
 +
        spin_lock(&obj->vma.lock);
-       for_each_ggtt_vma(vma, obj)
+       for_each_ggtt_vma(vma, obj) {
+               i915_vma_clear_scanout(vma);
                vma->display_alignment = I915_GTT_MIN_ALIGNMENT;
+       }
        spin_unlock(&obj->vma.lock);
  
        RCU_INIT_POINTER(obj->frontbuffer, NULL);