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authorCornelia Huck <cohuck@de.ibm.com>2005-07-29 14:03:37 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-29 15:01:14 -0700
commit4ffa92340b22a59575afe60ea155195c43213120 (patch)
tree2d3c5fd21760d791ed1704b194cf9596370185c0 /drivers/s390
parent350e3ade9ed0809a94c51db6ee66883a35f0d6c9 (diff)
downloadop-kernel-dev-4ffa92340b22a59575afe60ea155195c43213120.zip
op-kernel-dev-4ffa92340b22a59575afe60ea155195c43213120.tar.gz
[PATCH] s390: device recognition
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>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/device_fsm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 9b7f6f5..ee7a05e 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -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;
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