Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision 41df71f99dd4001594df602dcc612186bdf02430)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision 7faf0f0d6efa841b26c49ec60562635b2657ffdf)
@@ -44,11 +44,11 @@
 	/** Audio device pcm buffer interface */
 	AUDIO_PCM_BUFFER_IFACE,
-	
+
 	/** Network interface controller interface */
 	NIC_DEV_IFACE,
-		
+
 	/** IEEE 802.11 interface controller interface */
 	IEEE80211_DEV_IFACE,
-	
+
 	/** Interface provided by any PCI device. */
 	PCI_DEV_IFACE,
@@ -56,4 +56,6 @@
 	/** Interface provided by any USB device. */
 	USB_DEV_IFACE,
+	/** Interface provided by USB diagnostic devices. */
+	USBDIAG_DEV_IFACE,
 	/** Interface provided by USB host controller to USB device. */
 	USBHC_DEV_IFACE,