[SCSI] qla2xxx: Add a filter to compare port_name against the physical on vport creation.

During vport creation, there was a possibility to get create a
vport with same port_name as pport.  A new filter has added to
compare given port_name with the port_name of the pport.
Signed-Off-by: NSeokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/qla2xxx/qla_mid.c

@@ -341,6 +341,8 @@ qla24xx_vport_create_req_sanity_check(struct fc_vport *fc_vport)
 
 	/* Check up unique WWPN */
 	u64_to_wwn(fc_vport->port_name, port_name);
+	if (!memcmp(port_name, ha->port_name, WWN_SIZE))
+		return VPCERR_BAD_WWN;
 	vha = qla24xx_find_vhost_by_name(ha, port_name);
 	if (vha)
 		return VPCERR_BAD_WWN;