lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[S390] cio: Catch operand exceptions on stsch.

Browse Source 
If we have a subchannel id which has been generated via
for_each_subchannel(), it might contain an invalid subchannel set id.
We need to catch the ensuing operand exception by using stsch_err()
instead of stsch() in all possible cases.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Cornelia Huck
2007-02-05 21:17:36 +01:00
committed by Martin Schwidefsky
parent d8c351a97e
commit 758976f9a5
2 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/s390/cio/chsc.c
View File

@@ -608,7 +608,7 @@ __chp_add_new_sch(struct subchannel_id schid)
struct schib schib; struct schib schib;
int ret; int ret;
if (stsch(schid, &schib)) if (stsch_err(schid, &schib))
/* We're through */ /* We're through */
return need_rescan ? -EAGAIN : -ENXIO; return need_rescan ? -EAGAIN : -ENXIO;

2
drivers/s390/cio/css.c
View File

@@ -296,7 +296,7 @@ static int css_evaluate_new_subchannel(struct subchannel_id schid, int slow)
/* Will be done on the slow path. */ /* Will be done on the slow path. */
return -EAGAIN; return -EAGAIN;
} }
if (stsch(schid, &schib) || !schib.pmcw.dnv) { if (stsch_err(schid, &schib) || !schib.pmcw.dnv) {
/* Unusable - ignore. */ /* Unusable - ignore. */
return 0; return 0;
} }