[S390] cio: always query all paths on path verification.

Reappearing channel paths are sometimes not utilized by CCW devices
because path verification incorrectly relies on path-operational-mask
information which is not updated until a channel path has been used
again.
Modify path verification procedure to always query all available paths
to a device.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 9f9134b..3bb4e47 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -256,7 +256,7 @@
 	/* trigger path verification. */
 	if (sch->driver && sch->driver->verify)
 		sch->driver->verify(&sch->dev);
-	else if (sch->vpm == mask)
+	else if (sch->lpm == mask)
 		goto out_unreg;
 out_unlock:
 	spin_unlock_irq(&sch->lock);