Index: uspace/lib/usbdev/src/recognise.c
===================================================================
--- uspace/lib/usbdev/src/recognise.c	(revision e978adad9c345c1bf9c58d63e399a1952875dfe5)
+++ uspace/lib/usbdev/src/recognise.c	(revision eea3e39c84d40649f8c994cf924f850eabab33c6)
@@ -50,5 +50,5 @@
 
 /** DDF operations of child devices. */
-ddf_dev_ops_t child_ops = {
+static ddf_dev_ops_t child_ops = {
 	.interfaces[USB_DEV_IFACE] = &usb_iface_hub_child_impl
 };
@@ -339,5 +339,5 @@
  * @param[in] hc_handle Handle of the host controller.
  * @param[in] parent Parent device.
- * @param[in] dev_ops Child device ops.
+ * @param[in] dev_ops Child device ops. Default child_ops will be used if NULL.
  * @param[in] dev_data Arbitrary pointer to be stored in the child
  *	as @c driver_data.