Index: uspace/lib/usbdev/include/usb/dev/hub.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/hub.h	(revision 013517b0cc26d6f9fba3a17eb1e11802c8c00986)
+++ uspace/lib/usbdev/include/usb/dev/hub.h	(revision 32ec567100de28432275d239d22a7f71e40208f8)
@@ -43,6 +43,6 @@
 
 int usb_hc_new_device_wrapper(ddf_dev_t *, usb_hc_connection_t *, usb_speed_t,
-    int (*)(int, void *), int, void *,
-    usb_address_t *, ddf_dev_ops_t *, void *, ddf_fun_t **);
+    int (*)(void *), void *, usb_address_t *, ddf_dev_ops_t *, void *,
+    ddf_fun_t **);
 
 /** Info about device attached to host controller.
Index: uspace/lib/usbdev/src/hub.c
===================================================================
--- uspace/lib/usbdev/src/hub.c	(revision 013517b0cc26d6f9fba3a17eb1e11802c8c00986)
+++ uspace/lib/usbdev/src/hub.c	(revision 32ec567100de28432275d239d22a7f71e40208f8)
@@ -155,8 +155,6 @@
  * The @p enable_port function is expected to enable signaling on given
  * port.
- * The two arguments to it can have arbitrary meaning
- * (the @p port_no is only a suggestion)
- * and are not touched at all by this function
- * (they are passed as is to the @p enable_port function).
+ * The argument can have arbitrary meaning and it is not touched at all
+ * by this function (it is passed as is to the @p enable_port function).
  *
  * If the @p enable_port fails (i.e. does not return EOK), the device
@@ -175,5 +173,4 @@
  * @param[in] enable_port Function for enabling signaling through the port the
  *	device is attached to.
- * @param[in] port_no Port number (passed through to @p enable_port).
  * @param[in] arg Any data argument to @p enable_port.
  * @param[out] assigned_address USB address of the device.
@@ -193,6 +190,5 @@
 int usb_hc_new_device_wrapper(ddf_dev_t *parent, usb_hc_connection_t *connection,
     usb_speed_t dev_speed,
-    int (*enable_port)(int port_no, void *arg), int port_no, void *arg,
-    usb_address_t *assigned_address,
+    int (*enable_port)(void *arg), void *arg, usb_address_t *assigned_address,
     ddf_dev_ops_t *dev_ops, void *new_dev_data, ddf_fun_t **new_fun)
 {
@@ -278,5 +274,5 @@
 	 * device address.
 	 */
-	rc = enable_port(port_no, arg);
+	rc = enable_port(arg);
 	if (rc != EOK) {
 		goto leave_release_default_address;