Index: uspace/lib/drv/include/usbhc_iface.h
===================================================================
--- uspace/lib/drv/include/usbhc_iface.h	(revision 1e64b25007a3434f4217cb4a5f05c0ad5cfb253a)
+++ uspace/lib/drv/include/usbhc_iface.h	(revision f673f60c269705830c19b24bbbd777fa47f1ed9c)
@@ -207,9 +207,9 @@
 /** Callback for outgoing transfer. */
 typedef void (*usbhc_iface_transfer_out_callback_t)(device_t *,
-    usb_transaction_outcome_t, void *);
+    int, void *);
 
 /** Callback for incoming transfer. */
 typedef void (*usbhc_iface_transfer_in_callback_t)(device_t *,
-    usb_transaction_outcome_t, size_t, void *);
+    int, size_t, void *);