Index: uspace/lib/usb/include/usb/usb.h
===================================================================
--- uspace/lib/usb/include/usb/usb.h	(revision abe8ac52e704463a5ec096bac9fee0fc6b38d88d)
+++ uspace/lib/usb/include/usb/usb.h	(revision aec2ad462bb61ec47c424e5fb01a6dda11edbd56)
@@ -37,5 +37,19 @@
 
 #include <sys/types.h>
+#include <byteorder.h>
 #include <ipc/ipc.h>
+
+/** Convert 16bit value from native (host) endianness to USB endianness. */
+#define uint16_host2usb(n) host2uint16_t_le((n))
+
+/** Convert 32bit value from native (host) endianness to USB endianness. */
+#define uint32_host2usb(n) host2uint32_t_le((n))
+
+/** Convert 16bit value from USB endianness into native (host) one. */
+#define uint16_usb2host(n) uint16_t_le2host((n))
+
+/** Convert 32bit value from USB endianness into native (host) one. */
+#define uint32_usb2host(n) uint32_t_le2host((n))
+
 
 /** USB transfer type. */