Index: uspace/drv/uhci-hcd/iface.c
===================================================================
--- uspace/drv/uhci-hcd/iface.c	(revision fe10e72286750a2c5026467b72bb9becdb21e6da)
+++ uspace/drv/uhci-hcd/iface.c	(revision a72620d844b2def11ca79c28d58a9dfca9e925d0)
@@ -132,4 +132,18 @@
 }
 /*----------------------------------------------------------------------------*/
+static int control_write(device_t *dev, usb_target_t target,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
+static int control_read(device_t *dev, usb_target_t target,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
 static int control_write_setup(device_t *dev, usb_target_t target,
     void *data, size_t size,
@@ -213,4 +227,7 @@
 	.interrupt_out = interrupt_out,
 	.interrupt_in = interrupt_in,
+
+	.control_read = control_read,
+	.control_write = control_write,
 
 	.control_write_setup = control_write_setup,
Index: uspace/drv/uhci-hcd/tracker.c
===================================================================
--- uspace/drv/uhci-hcd/tracker.c	(revision fe10e72286750a2c5026467b72bb9becdb21e6da)
+++ uspace/drv/uhci-hcd/tracker.c	(revision a72620d844b2def11ca79c28d58a9dfca9e925d0)
@@ -51,4 +51,5 @@
 static void tracker_control_read_status(tracker_t *instance);
 static void tracker_control_write_status(tracker_t *instance);
+
 static void tracker_call_in(tracker_t *instance);
 static void tracker_call_out(tracker_t *instance);