From 4ffa92340b22a59575afe60ea155195c43213120 Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Fri, 29 Jul 2005 14:03:37 -0700 Subject: [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 Signed-off-by: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/s390/cio/device_fsm.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') 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) 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; -- cgit v1.2.1