1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index b70554523552..e1913518f354 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -144,6 +144,7 @@ struct schib;
 int css_sch_is_valid(struct schib *);
 
 extern struct workqueue_struct *slow_path_wq;
+void css_wait_for_slow_path(void);
 
 extern struct attribute_group *subch_attr_groups[];
 #endif