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authorCornelia Huck <cornelia.huck@de.ibm.com>2008-04-17 07:46:00 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2008-04-17 07:46:57 +0200
commitfe6173d9b33dba18ec462051750fb1b9abcd796d (patch)
tree393cf3a058e880365b069915d6cb8bad96ec36aa /drivers/s390/cio/device_ops.c
parent22806dc1a8ffd88a7c7bdd070879e6e323db496a (diff)
downloadop-kernel-dev-fe6173d9b33dba18ec462051750fb1b9abcd796d.zip
op-kernel-dev-fe6173d9b33dba18ec462051750fb1b9abcd796d.tar.gz
[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.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 49b58eb..a1718a0 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;
}
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