Simply return early in case there are no updated rects. Signed-off-by: Gerd Hoffmann <kra...@redhat.com> --- hw/display/qxl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/hw/display/qxl.c b/hw/display/qxl.c index 919dc5c..f867cdf 100644 --- a/hw/display/qxl.c +++ b/hw/display/qxl.c @@ -893,7 +893,8 @@ static void interface_update_area_complete(QXLInstance *sin, int qxl_i; qemu_mutex_lock(&qxl->ssd.lock); - if (surface_id != 0 || !qxl->render_update_cookie_num) { + if (surface_id != 0 || !num_updated_rects || + !qxl->render_update_cookie_num) { qemu_mutex_unlock(&qxl->ssd.lock); return; } -- 1.8.3.1