[S390] cio: css_register_subchannel race.
Asynchronous probe can release memory of a subchannel before
css_get_ssd_info is called. To fix this call css_get_ssd_info
before registering with driver core.
Signed-off-by: Stefan Bader <shbader@de.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 4c81d89..9d6c024 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -139,6 +139,8 @@
sch->dev.release = &css_subchannel_release;
sch->dev.groups = subch_attr_groups;
+ css_get_ssd_info(sch);
+
/* make it known to the system */
ret = css_sch_device_register(sch);
if (ret) {
@@ -146,7 +148,6 @@
__func__, sch->dev.bus_id);
return ret;
}
- css_get_ssd_info(sch);
return ret;
}