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authorCornelia Huck <cohuck@de.ibm.com>2005-07-29 17:03:37 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-29 18:01:14 -0400
commit4ffa92340b22a59575afe60ea155195c43213120 (patch)
tree2d3c5fd21760d791ed1704b194cf9596370185c0
parent350e3ade9ed0809a94c51db6ee66883a35f0d6c9 (diff)
[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.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 9b7f6f548b1d..ee7a05e0c3ba 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)
235 sch->schib.pmcw.pam & 235 sch->schib.pmcw.pam &
236 sch->schib.pmcw.pom & 236 sch->schib.pmcw.pom &
237 sch->opm; 237 sch->opm;
238 /* Check since device may again have become not operational. */
239 if (!sch->schib.pmcw.dnv)
240 state = DEV_STATE_NOT_OPER;
238 if (cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID) 241 if (cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID)
239 /* Force reprobe on all chpids. */ 242 /* Force reprobe on all chpids. */
240 old_lpm = 0; 243 old_lpm = 0;