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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2008-04-17 09:45:59 +0400 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-04-17 09:46:57 +0400 |
| commit | 22806dc1a8ffd88a7c7bdd070879e6e323db496a (patch) | |
| tree | 45db4877914d6e0dbdb9de4b09f37d5ecce795b6 /drivers/s390/cio/css.c | |
| parent | 374b8f45f1d5cb17f45ba1d7c74ce8cc9e2f1407 (diff) | |
| download | linux-22806dc1a8ffd88a7c7bdd070879e6e323db496a.tar.xz | |
[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.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 3b45bbe6cce0..3e829c827493 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) { |