Index: uspace/lib/usbdev/src/hub.c
===================================================================
--- uspace/lib/usbdev/src/hub.c	(revision ae754e5fd338c0edb990842c782f78f9f6dd8af4)
+++ uspace/lib/usbdev/src/hub.c	(revision 10059a68788a72850b73bfc6dc8e4acdd530bd51)
@@ -177,5 +177,5 @@
  * @param[in] arg Any data argument to @p enable_port.
  * @param[out] assigned_address USB address of the device.
- * @param[in] dev_ops Child device ops.
+ * @param[in] dev_ops Child device ops. Will use default if not provided.
  * @param[in] new_dev_data Arbitrary pointer to be stored in the child
  *	as @c driver_data.
@@ -357,13 +357,17 @@
 	 */
 leave_release_default_address:
-	usb_pipe_unregister(&ctrl_pipe, &hc_conn);
+	if (usb_pipe_unregister(&ctrl_pipe, &hc_conn) != EOK)
+		usb_log_warning("%s: Failed to unregister default pipe.\n",
+		    __FUNCTION__);
 
 leave_release_free_address:
-	usb_hc_unregister_device(&hc_conn, dev_addr);
+	if (usb_hc_unregister_device(&hc_conn, dev_addr) != EOK)
+		usb_log_warning("%s: Failed to unregister device.\n",
+		    __FUNCTION__);
 
 close_connection:
 	if (usb_hc_connection_close(&hc_conn) != EOK)
-		usb_log_warning("usb_hc_new_device_wrapper(): Failed to close "
-		    "connection.\n");
+		usb_log_warning("%s: Failed to close connection.\n",
+		    __FUNCTION__);
 
 	return rc;