Index: uspace/lib/usbdev/include/usb/dev/device.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/device.h	(revision c01987c628cf7402a7cb7a0193f89707a0bb2a15)
+++ uspace/lib/usbdev/include/usb/dev/device.h	(revision 08d4ea2111e5db01d0a6194bd9da4248ee282dc7)
@@ -58,5 +58,5 @@
 
 /* DDF parts */
-int usb_device_create_ddf(ddf_dev_t *, const usb_endpoint_description_t **, const char **);
+errno_t usb_device_create_ddf(ddf_dev_t *, const usb_endpoint_description_t **, const char **);
 void usb_device_destroy_ddf(ddf_dev_t *);
 
@@ -76,8 +76,8 @@
 void usb_device_bus_exchange_end(async_exch_t *);
 
-int usb_device_select_interface(usb_device_t *, uint8_t,
+errno_t usb_device_select_interface(usb_device_t *, uint8_t,
     const usb_endpoint_description_t **);
 
-int usb_device_create_pipes(usb_device_t *usb_dev,
+errno_t usb_device_create_pipes(usb_device_t *usb_dev,
     const usb_endpoint_description_t **endpoints);
 void usb_device_destroy_pipes(usb_device_t *);