2017-01-17 19:07, Shreyansh Jain:

+ * Generic bus object passed only as a helper for implementation to find
+ * their respective registered bus object. Implementations can choose not
+ * to use this variable.

I think this comment is obsolete.

+ *
+ * @return
+ *     0 for successful scan
+ *     !0 (<0) for unsuccessful scan with error value

What do you mean with !0 (<0) ?
I guess <0 is enough.

+ */
+typedef int (*rte_bus_scan_t)(void);