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[PATCH] s390: device recognition

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Close a small window where a device may be not operational again after senseid
finished and the "same device" check fails due to dev=0000 by checking for dnv
after stsch() by then setting the device to not operational.  (No need to
check for dnv in ccw_device_handle_oper() again since we don't do stsch() into
the subchannel's schib in the meantime and will get a crw anyway if the device
becomes not oper again).

Signed-off-by: Cornelia Huck <cohuck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Cornelia Huck 2005-07-29 14:03:37 -07:00 committed by Linus Torvalds
parent 350e3ade9e
commit 4ffa92340b
1 changed files with 3 additions and 0 deletions
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3
drivers/s390/cio/device_fsm.c
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@ -235,6 +235,9 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
sch->schib.pmcw.pam &
sch->schib.pmcw.pom &
sch->opm;
/* Check since device may again have become not operational. */
if (!sch->schib.pmcw.dnv)
state = DEV_STATE_NOT_OPER;
if (cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID)
/* Force reprobe on all chpids. */
old_lpm = 0;