diff --git a/include/linux/rio.h b/include/linux/rio.h
index cd3796e..18e0993 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -265,6 +265,11 @@
 	struct rio_scan *nscan;
 };
 
+/*
+ * Enumeration/discovery control flags
+ */
+#define RIO_SCAN_ENUM_NO_WAIT	0x00000001 /* Do not wait for enum completed */
+
 struct rio_id_table {
 	u16 start;	/* logical minimal id */
 	u32 max;	/* max number of IDs in table */
@@ -467,8 +472,8 @@
  * @discover: Callback to perform RapidIO fabric discovery.
  */
 struct rio_scan {
-	int (*enumerate)(struct rio_mport *mport);
-	int (*discover)(struct rio_mport *mport);
+	int (*enumerate)(struct rio_mport *mport, u32 flags);
+	int (*discover)(struct rio_mport *mport, u32 flags);
 };
 
 /* Architecture and hardware-specific functions */