On Wed, 2018-12-19 at 13:27 +0100, Gerd Hoffmann wrote:
> Sending the flush command only makes sense if we actually have
> a framebuffer attached to the scanout (handle != 0).
> 
> Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
> ---
>  drivers/gpu/drm/virtio/virtgpu_plane.c | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c 
> b/drivers/gpu/drm/virtio/virtgpu_plane.c
> index ead5c53d4e..548265b8e8 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_plane.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
> @@ -130,11 +130,12 @@ static void virtio_gpu_primary_plane_update(struct 
> drm_plane *plane,
>                                  plane->state->src_h >> 16,
>                                  plane->state->src_x >> 16,
>                                  plane->state->src_y >> 16);
> -     virtio_gpu_cmd_resource_flush(vgdev, handle,
> -                                   plane->state->src_x >> 16,
> -                                   plane->state->src_y >> 16,
> -                                   plane->state->src_w >> 16,
> -                                   plane->state->src_h >> 16);
> +     if (handle)
> +             virtio_gpu_cmd_resource_flush(vgdev, handle,
> +                                           plane->state->src_x >> 16,
> +                                           plane->state->src_y >> 16,
> +                                           plane->state->src_w >> 16,
> +                                           plane->state->src_h >> 16);
>  }
>  
>  static int virtio_gpu_cursor_prepare_fb(struct drm_plane *plane,

Reviewed-by: Ezequiel Garcia <ezequ...@collabora.com>

Regards,
Ezequiel

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