[S390] cio: Allow 0 and 1 as input for channel path status attribute.

Channel path status can now be modified by writing '0' and '1'
to the sysfs status attribute in addition to 'offline' and
'online' respectively.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index bb6f876..b329851 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -1169,9 +1169,9 @@
 	if (!num_args)
 		return count;
 
-	if (!strnicmp(cmd, "on", 2))
+	if (!strnicmp(cmd, "on", 2) || !strcmp(cmd, "1"))
 		error = s390_vary_chpid(cp->chpid, 1);
-	else if (!strnicmp(cmd, "off", 3))
+	else if (!strnicmp(cmd, "off", 3) || !strcmp(cmd, "0"))
 		error = s390_vary_chpid(cp->chpid, 0);
 	else
 		error = -EINVAL;