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authorCornelia Huck <cornelia.huck@de.ibm.com>2008-04-17 07:45:59 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2008-04-17 07:46:57 +0200
commit22806dc1a8ffd88a7c7bdd070879e6e323db496a (patch)
tree45db4877914d6e0dbdb9de4b09f37d5ecce795b6 /drivers/s390/cio/css.c
parent374b8f45f1d5cb17f45ba1d7c74ce8cc9e2f1407 (diff)
[S390] cio: Fix race for "fast" path gone/path back situations.
Make sure we wait for previous evaluations triggered by path state changes to have settled before we manipulate path states again. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/css.c')
-rw-r--r--drivers/s390/cio/css.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 3b45bbe6cce..3e829c82749 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -533,6 +533,12 @@ void css_schedule_eval_all(void)
spin_unlock_irqrestore(&slow_subchannel_lock, flags);
}
+void css_wait_for_slow_path(void)
+{
+ flush_workqueue(ccw_device_notify_work);
+ flush_workqueue(slow_path_wq);
+}
+
/* Reprobe subchannel if unregistered. */
static int reprobe_subchannel(struct subchannel_id schid, void *data)
{