[S390] sclp: keep facility mask up to date.

In case the supported sclp facilities change
the new mask should be saved.

Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 2c7a1ee..277f9cc 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -506,6 +506,8 @@
 	if (scbuf->validity_sclp_send_mask)
 		sclp_send_mask = scbuf->sclp_send_mask;
 	spin_unlock_irqrestore(&sclp_lock, flags);
+	if (scbuf->validity_sclp_active_facility_mask)
+		sclp_facilities = scbuf->sclp_active_facility_mask;
 	sclp_dispatch_state_change();
 }