diff --git a/[refs] b/[refs]
index 9692662638d1..df4cda33beee 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 934aeb587bab3173b6dec8e7717b909d8efc77b0
+refs/heads/master: 10d00f78e67223ef429fa5f4abfc9ea4ad740490
diff --git a/trunk/drivers/s390/scsi/zfcp_fsf.c b/trunk/drivers/s390/scsi/zfcp_fsf.c
index 38a7e4a6b639..5126461d846e 100644
--- a/trunk/drivers/s390/scsi/zfcp_fsf.c
+++ b/trunk/drivers/s390/scsi/zfcp_fsf.c
@@ -1475,9 +1475,16 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
 		plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els;
 		if (req->qtcb->bottom.support.els1_length >=
 		    FSF_PLOGI_MIN_LEN) {
-			if (plogi->serv_param.wwpn != port->wwpn)
+			if (plogi->serv_param.wwpn != port->wwpn) {
 				port->d_id = 0;
-			else {
+				dev_warn(&port->adapter->ccw_device->dev,
+					 "A port opened with WWPN 0x%016Lx "
+					 "returned data that identifies it as "
+					 "WWPN 0x%016Lx\n",
+					 (unsigned long long) port->wwpn,
+					 (unsigned long long)
+					  plogi->serv_param.wwpn);
+			} else {
 				port->wwnn = plogi->serv_param.wwnn;
 				zfcp_fc_plogi_evaluate(port, plogi);
 			}