drm/virtio: defer backend notify for sprite update

Signed-off-by: Xue, Bosheng <bosheng.xue@intel.com>

Author: bosheng1

drivers/gpu/drm/virtio/virtgpu_plane.c

@@ -395,23 +395,6 @@ static void virtio_gpu_resource_flush_sprite(struct drm_plane *plane, int indx,
 	int plane_index = 0;
 
 	vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
-	fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0);
-
-	if (fence) {
-		objs = virtio_gpu_array_alloc(1);
-		if (!objs) {
-			kfree(fence);
-			return;
-		}
-
-		virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
-		for(i=1; i<fb->format->num_planes; i++) {
-			if(vgfb->base.obj[i] != vgfb->base.obj[0])
-				virtio_gpu_array_add_obj(objs, vgfb->base.obj[i]);
-		}
-		virtio_gpu_array_lock_resv(objs);
-	}
-
 	for(i=0; i<4; i++) {
 		if(vgfb->base.obj[i]) {
 			struct virtio_gpu_object *bo;
@@ -426,14 +409,6 @@ static void virtio_gpu_resource_flush_sprite(struct drm_plane *plane, int indx,
 	plane_index = plane->index - vgdev->outputs[indx].plane_idx_offset;
 	virtio_gpu_cmd_resource_flush_sprite(vgdev, indx, plane_index, fb,
 			resource_id, cnt, x, y, width, height, objs, fence);
-
-	virtio_gpu_notify(vgdev);
-
-	if (fence) {
-		dma_fence_wait_timeout(&fence->f, true,
-				       msecs_to_jiffies(50));
-		dma_fence_put(&fence->f);
-	}
 }
 
 static void virtio_gpu_sprite_plane_update(struct drm_plane *plane,

drivers/gpu/drm/virtio/virtgpu_vq.c

@@ -786,7 +786,10 @@ void virtio_gpu_cmd_resource_flush_sprite(struct virtio_gpu_device *vgdev,
 		cmd_p->offsets[i] = cpu_to_le32(fb->offsets[i]);
 	}
 
-	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+	if (fence)
+		virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence);
+	else
+		virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
 }
 
 void virtio_gpu_cmd_send_misc(struct virtio_gpu_device *vgdev, uint32_t scanout_id,