Sending the flush command only makes sense if we actually have a framebuffer attached to the scanout (handle != 0).
Signed-off-by: Gerd Hoffmann kraxel@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,