Index: uspace/lib/usbdev/include/usb/dev/pipes.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/pipes.h	(revision bd575647525ea94b1e4d714096b7971bfb9e5353)
+++ uspace/lib/usbdev/include/usb/dev/pipes.h	(revision ab517f4449ead4e2cd98699c88113f45ac5f4789)
@@ -129,6 +129,6 @@
 int usb_pipe_unregister(usb_pipe_t *);
 
-void usb_pipe_start_long_transfer(usb_pipe_t *);
-void usb_pipe_end_long_transfer(usb_pipe_t *);
+int usb_pipe_start_long_transfer(usb_pipe_t *);
+int usb_pipe_end_long_transfer(usb_pipe_t *);
 
 int usb_pipe_read(usb_pipe_t *, void *, size_t, size_t *);