diff options
| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2008-04-17 07:46:00 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-04-17 07:46:57 +0200 |
| commit | fe6173d9b33dba18ec462051750fb1b9abcd796d (patch) | |
| tree | 393cf3a058e880365b069915d6cb8bad96ec36aa /drivers/s390/cio/device_ops.c | |
| parent | [S390] cio: Fix race for "fast" path gone/path back situations. (diff) | |
| download | linux-fe6173d9b33dba18ec462051750fb1b9abcd796d.tar.xz linux-fe6173d9b33dba18ec462051750fb1b9abcd796d.zip | |
[S390] cio: Trigger verification on device/path not operational.
Currently, we don't do much on no path or no device situations during
normal user I/O, since we rely on reports regarding those events by
the machine. If we trigger a path verification to bring our device
state up-to-date, we (a) may recover from path failures earlier and
(b) better handle situations where the hardware/hypervisor doesn't
give us enough notifications.
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/device_ops.c')
| -rw-r--r-- | drivers/s390/cio/device_ops.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index 49b58eb0fab8..a1718a0aa539 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -193,8 +193,15 @@ int ccw_device_start_key(struct ccw_device *cdev, struct ccw1 *cpa, return -EACCES; } ret = cio_start_key (sch, cpa, lpm, key); - if (ret == 0) + switch (ret) { + case 0: cdev->private->intparm = intparm; + break; + case -EACCES: + case -ENODEV: + dev_fsm_event(cdev, DEV_EVENT_VERIFY); + break; + } return ret; } |