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Commit 758976f9 authored by Cornelia Huck's avatar Cornelia Huck Committed by Martin Schwidefsky
Browse files

[S390] cio: Catch operand exceptions on stsch. 



If we have a subchannel id which has been generated via
for_each_subchannel(), it might contain an invalid subchannel set id.
We need to catch the ensuing operand exception by using stsch_err()
instead of stsch() in all possible cases.

Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent d8c351a9

drivers/s390/cio/chsc.c

+1 −1
Original line number Diff line number Diff line
@@ -608,7 +608,7 @@ __chp_add_new_sch(struct subchannel_id schid) 
	struct schib schib;

	int ret;



	if (stsch(schid, &schib))

	if (stsch_err(schid, &schib))

		/* We're through */

		return need_rescan ? -EAGAIN : -ENXIO;

drivers/s390/cio/css.c

+1 −1
Original line number Diff line number Diff line
@@ -296,7 +296,7 @@ static int css_evaluate_new_subchannel(struct subchannel_id schid, int slow) 
		/* Will be done on the slow path. */

		return -EAGAIN;

	}

	if (stsch(schid, &schib) || !schib.pmcw.dnv) {

	if (stsch_err(schid, &schib) || !schib.pmcw.dnv) {

		/* Unusable - ignore. */

		return 0;

	}