Index: uspace/lib/usbhost/include/usb/host/hcd.h
===================================================================
--- uspace/lib/usbhost/include/usb/host/hcd.h	(revision 80136376d214f46fb63a3d7a552c74395a0128b1)
+++ uspace/lib/usbhost/include/usb/host/hcd.h	(revision a801688bbb63ce8e1f39927867b7500c306a8b52)
@@ -98,8 +98,7 @@
  * @return pointer cast to hcd_t*.
  */
-static inline hcd_t * fun_to_hcd(const ddf_fun_t *fun)
+static inline hcd_t *fun_to_hcd(ddf_fun_t *fun)
 {
-	assert(fun);
-	return fun->driver_data;
+	return ddf_fun_data_get(fun);
 }