diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 820c332..436bf1f 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -3803,8 +3803,9 @@
 		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
 		return rc;
 	}
-
-	mpno = QETH_MAX_PORTNO;
+	mpno = qdio_get_ssqd_pct(CARD_DDEV(card));
+	if (mpno)
+		mpno = min(mpno - 1, QETH_MAX_PORTNO);
 	if (card->info.portno > mpno) {
 		PRINT_ERR("Device %s does not offer port number %d \n.",
 			CARD_BUS_ID(card), card->info.portno);
diff --git a/include/asm-s390/qdio.h b/include/asm-s390/qdio.h
index 4b8ff55..1124034 100644
--- a/include/asm-s390/qdio.h
+++ b/include/asm-s390/qdio.h
@@ -127,6 +127,7 @@
 		   unsigned int qidx,unsigned int count,
 		   struct qdio_buffer *buffers);
 
+extern int qdio_get_ssqd_pct(struct ccw_device*);
 extern int qdio_synchronize(struct ccw_device*, unsigned int flags,
 			    unsigned int queue_number);