s390/blacklist: Perform subchannel scan only when needed
Move scheduling of a subchannel scan to those instances where new
devices may actually have become available. This reduces unnecessary
scan work in case devices were added to the blacklist.
Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index 77ee4da..b3f791b 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -260,16 +260,16 @@
parm = strsep(&buf, " ");
- if (strcmp("free", parm) == 0)
+ if (strcmp("free", parm) == 0) {
rc = blacklist_parse_parameters(buf, free, 0);
- else if (strcmp("add", parm) == 0)
+ css_schedule_eval_all_unreg(0);
+ } else if (strcmp("add", parm) == 0)
rc = blacklist_parse_parameters(buf, add, 0);
else if (strcmp("purge", parm) == 0)
return ccw_purge_blacklisted();
else
return -EINVAL;
- css_schedule_eval_all_unreg(0);
return rc;
}