[S390] cio: trigger subchannel event at resume time

ccw_device_pm_restore: trigger subchannel event to better handle
changes to the subchannel device.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 169a277..2769da5 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -1020,7 +1020,7 @@
 	return 0;
 }
 
-static inline int css_complete_work(void)
+int css_complete_work(void)
 {
 	int ret;