Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision f9d0a86c86defda4d9f30fbb4f7217a75048bf8b)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision 1ea0bbf904b247218cfae78b7d3a61582f2a159a)
@@ -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,