switch ->is_visible() to returning umode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 7c34d8e..db47158 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -873,7 +873,7 @@
 	iscsi_host_free(shost);
 }
 
-static mode_t iscsi_sw_tcp_attr_is_visible(int param_type, int param)
+static umode_t iscsi_sw_tcp_attr_is_visible(int param_type, int param)
 {
 	switch (param_type) {
 	case ISCSI_HOST_PARAM: