Commit c9182e0f authored by Peter Oberparleiter's avatar Peter Oberparleiter Committed by Martin Schwidefsky
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[S390] cio: observe chpid valid flag 



Check validity flag of CHPID description data before continuing with
channel-path initialization.

Signed-off-by: default avatarPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent e6b6e10a

drivers/s390/cio/chp.c

+4 −0
Original line number Diff line number Diff line
@@ -339,6 +339,10 @@ int chp_new(struct chp_id chpid) 
	ret = chsc_determine_channel_path_description(chpid, &chp->desc);

	if (ret)

		goto out_free;

	if ((chp->desc.flags & 0x80) == 0) {

		ret = -ENODEV;

		goto out_free;

	}

	/* Get channel-measurement characteristics. */

	if (css_characteristics_avail && css_chsc_characteristics.scmc

	    && css_chsc_characteristics.secm) {