[SCSI] zfcp: provide support for NPIV

N_Port ID Virtualization (NPIV) allows a single FCP port to appear as
multiple, distinct ports providing separate port identification. NPIV
is supported by FC HBAs on System z9. zfcp was adapted to support this
new feature.

Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 104b742..c378226 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -96,7 +96,8 @@
 extern int  zfcp_fsf_close_unit(struct zfcp_erp_action *);
 
 extern int  zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
-extern int  zfcp_fsf_exchange_port_data(struct zfcp_adapter *,
+extern int  zfcp_fsf_exchange_port_data(struct zfcp_erp_action *,
+					struct zfcp_adapter *,
 					struct fsf_qtcb_bottom_port *);
 extern int  zfcp_fsf_control_file(struct zfcp_adapter *, struct zfcp_fsf_req **,
 				  u32, u32, struct zfcp_sg_list *);