diff options
| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2006-12-04 17:41:04 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-12-04 17:41:04 +0300 |
| commit | d23861ff1a4da1f4a5255eb4582f620191c6e1c0 (patch) | |
| tree | fcf5cd0ce14600f2ace203bc71ae940db7fe6497 /drivers/s390/cio/device_id.c | |
| parent | 24cb5b4846ebae5543869b5c596c2650f380df53 (diff) | |
| download | linux-d23861ff1a4da1f4a5255eb4582f620191c6e1c0.tar.xz | |
[S390] cio: Retry internal operations after vary off.
If I/O was running on a just varied off chpid, it will be terminated.
If this was a common I/O layer internal I/O, it needs to be retried.
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_id.c')
| -rw-r--r-- | drivers/s390/cio/device_id.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c index a74785b9e4eb..f17275917fe5 100644 --- a/drivers/s390/cio/device_id.c +++ b/drivers/s390/cio/device_id.c @@ -191,6 +191,8 @@ __ccw_device_sense_id_start(struct ccw_device *cdev) if ((sch->opm & cdev->private->imask) != 0 && cdev->private->iretry > 0) { cdev->private->iretry--; + /* Reset internal retry indication. */ + cdev->private->flags.intretry = 0; ret = cio_start (sch, cdev->private->iccws, cdev->private->imask); /* ret is 0, -EBUSY, -EACCES or -ENODEV */ @@ -237,8 +239,14 @@ ccw_device_check_sense_id(struct ccw_device *cdev) return 0; /* Success */ } /* Check the error cases. */ - if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC | SCSW_FCTL_CLEAR_FUNC)) + if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC | SCSW_FCTL_CLEAR_FUNC)) { + /* Retry Sense ID if requested. */ + if (cdev->private->flags.intretry) { + cdev->private->flags.intretry = 0; + return -EAGAIN; + } return -ETIME; + } if (irb->esw.esw0.erw.cons && (irb->ecw[0] & SNS0_CMD_REJECT)) { /* * if the device doesn't support the SenseID |