Index: uspace/lib/drv/include/usbhc_iface.h
===================================================================
--- uspace/lib/drv/include/usbhc_iface.h	(revision 3e6a98c595287c43d200d28d97f57755342be117)
+++ uspace/lib/drv/include/usbhc_iface.h	(revision 94c40ce2fbf2aaad836abc367830f94458ebe367)
@@ -58,9 +58,8 @@
 
 /** Callback for outgoing transfer. */
-typedef void (*usbhc_iface_transfer_out_callback_t)(ddf_fun_t *, int, void *);
+typedef void (*usbhc_iface_transfer_out_callback_t)(int, void *);
 
 /** Callback for incoming transfer. */
-typedef void (*usbhc_iface_transfer_in_callback_t)(ddf_fun_t *,
-    int, size_t, void *);
+typedef void (*usbhc_iface_transfer_in_callback_t)(int, size_t, void *);
 
 /** USB host controller communication interface. */