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Commit 4ffa9234 authored by Cornelia Huck's avatar Cornelia Huck Committed by Linus Torvalds
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[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: default avatarCornelia Huck <cohuck@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 350e3ade

drivers/s390/cio/device_fsm.c

+3 −0
Original line number Diff line number Diff line
@@ -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;