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[S390] cio: Retry internal operations after vary off.

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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>
This commit is contained in:
Cornelia Huck
2006-12-04 15:41:04 +01:00
committed by Martin Schwidefsky
parent 24cb5b4846
commit d23861ff1a
7 changed files with 90 additions and 11 deletions
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10
drivers/s390/cio/device_id.c
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@@ -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