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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2006-12-04 15:41:01 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-12-04 15:41:01 +0100 |
| commit | 24cb5b4846ebae5543869b5c596c2650f380df53 (patch) | |
| tree | fd45cf7fab0a065c7529c5811e3258a66e877095 /drivers/s390/cio/device_fsm.c | |
| parent | 9163bb2e556f6c7879961df94540f0879db4717b (diff) | |
| download | blackbird-op-linux-24cb5b4846ebae5543869b5c596c2650f380df53.tar.gz blackbird-op-linux-24cb5b4846ebae5543869b5c596c2650f380df53.zip | |
[S390] cio: Use path verification for last path gone after vary off.
If the last path to a device is gone after a chpid has been varied
off, putting it on the slow queue doesn't prevent a device driver
from still attempting to use it (it may stay on the slow queue for a
long time). Instead, trigger a verify event which will prevent I/O
attempts from the device driver immediately.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/device_fsm.c')
| -rw-r--r-- | drivers/s390/cio/device_fsm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index de3d0857db9f..7665000e8dfe 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -59,6 +59,17 @@ device_set_disconnected(struct subchannel *sch) cdev->private->state = DEV_STATE_DISCONNECTED; } +int device_trigger_verify(struct subchannel *sch) +{ + struct ccw_device *cdev; + + cdev = sch->dev.driver_data; + if (!cdev || !cdev->online) + return -EINVAL; + dev_fsm_event(cdev, DEV_EVENT_VERIFY); + return 0; +} + /* * Timeout function. It just triggers a DEV_EVENT_TIMEOUT. */ |
