Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision df6b760f1bd75c44a53207ccec0e9abb8ca6ea0e)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision 7972b5174bd5f797d8676d4e3c36a81a8748fd94)
@@ -38,4 +38,8 @@
 	HW_RES_DEV_IFACE = 0,	
 	CHAR_DEV_IFACE,
+
+	/** Interface provided by USB host controller. */
+	USBHC_DEV_IFACE,
+
 	// TODO add more interfaces
 	DEV_IFACE_MAX