+static int
+i915_gem_wait_for_pending_flip(struct drm_device *dev,
+ struct drm_gem_object **object_list,
+ int count)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_i915_gem_object *obj_priv;
+ DEFINE_WAIT(wait);
+ int i, ret = 0;
+
+ for (;;) {
+ prepare_to_wait(&dev_priv->pending_flip_queue,
+ &wait, TASK_INTERRUPTIBLE);
+ for (i = 0; i < count; i++) {
+ obj_priv = object_list[i]->driver_private;
+ if (atomic_read(&obj_priv->pending_flip) > 0)
+ break;
+ }
+ if (i == count)
+ break;
+
+ if (!signal_pending(current)) {
+ mutex_unlock(&dev->struct_mutex);
+ schedule();
+ mutex_lock(&dev->struct_mutex);
+ continue;
+ }
+ ret = -ERESTARTSYS;
+ break;
+ }
+ finish_wait(&dev_priv->pending_flip_queue, &wait);
+
+ return ret;
+}
+