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[S390] cio chpid offline.

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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>
This commit is contained in:
Cornelia Huck
2006-06-29 15:03:35 +02:00
committed by Martin Schwidefsky
parent 3ee526841b
commit b4f7b1ee57
3 changed files with 5 additions and 3 deletions
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3
drivers/s390/cio/chsc.c
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@@ -244,8 +244,7 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
if ((sch->schib.scsw.actl & SCSW_ACTL_DEVACT) &&
(sch->schib.scsw.actl & SCSW_ACTL_SCHACT) &&
(sch->schib.pmcw.lpum == mask) &&
(sch->vpm == 0)) {
(sch->schib.pmcw.lpum == mask)) {
int cc;
cc = cio_clear(sch);