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| author | Cornelia Huck <cohuck@de.ibm.com> | 2005-07-29 14:03:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-29 15:01:14 -0700 |
| commit | 4ffa92340b22a59575afe60ea155195c43213120 (patch) | |
| tree | 2d3c5fd21760d791ed1704b194cf9596370185c0 | |
| parent | 350e3ade9ed0809a94c51db6ee66883a35f0d6c9 (diff) | |
| download | op-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>
| -rw-r--r-- | drivers/s390/cio/device_fsm.c | 3 |
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; |
