[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: NPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>

drivers/s390/cio/chsc.c

@@ -1169,9 +1169,9 @@ chp_status_write(struct device *dev, struct device_attribute *attr, const char *
 	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;