diff options
| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2006-06-29 15:03:35 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-06-29 15:03:35 +0200 |
| commit | b4f7b1ee577857aca467e6825122a3b29d6c3c0e (patch) | |
| tree | bb17f4d6bea22b1d5a4c0a927c41f1ba782ef2ae /drivers/s390/cio/device_fsm.c | |
| parent | 3ee526841ba409f7b23f825f120772a79e7d7bd2 (diff) | |
[S390] cio chpid offline.
After setting a path to a dasd offline at the SE, I/O hangs on that
dasd for 5 minutes, then continues.
I/O for which an interrupt will not be reported after the channel
path has been disabled was not terminated by the common I/O layer,
causing the dasd MIH to hit after 5 minutes.
Be more aggressive in terminating I/O after setting a channel path
offline. Also make sure to generate a fake irb if the device
driver issues an I/O request after being notified of the killed
I/O and clear residual information from the irb before trying to
start the delayed verification.
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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index 49ec562d7f6..5ec8ef1df9f 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -861,6 +861,8 @@ ccw_device_clear_verify(struct ccw_device *cdev, enum dev_event dev_event) irb = (struct irb *) __LC_IRB; /* Accumulate status. We don't do basic sense. */ ccw_device_accumulate_irb(cdev, irb); + /* Remember to clear irb to avoid residuals. */ + memset(&cdev->private->irb, 0, sizeof(struct irb)); /* Try to start delayed device verification. */ ccw_device_online_verify(cdev, 0); /* Note: Don't call handler for cio initiated clear! */ |