From e42734e270b9e5ada83188d73b733533ce11ee4a Mon Sep 17 00:00:00 2001
From: Stefan Bader <shbader@de.ibm.com>
Date: Fri, 15 Dec 2006 17:18:30 +0100
Subject: [PATCH] [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>
---
drivers/s390/cio/css.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 4c81d890791e4..9d6c02446863c 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -139,6 +139,8 @@ css_register_subchannel(struct subchannel *sch)
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 @@ css_register_subchannel(struct subchannel *sch)
__func__, sch->dev.bus_id);
return ret;
}
- css_get_ssd_info(sch);
return ret;
}