Index: uspace/lib/usb/include/usb/pipes.h
===================================================================
--- uspace/lib/usb/include/usb/pipes.h	(revision 27a001239f0ff2de46b2832c475f5a2a852ba253)
+++ uspace/lib/usb/include/usb/pipes.h	(revision 18cb870c5021a54901fd39c798fb3b9183310e5a)
@@ -107,4 +107,6 @@
 	/** Endpoint description. */
 	const usb_endpoint_description_t *description;
+	/** Interface number the endpoint must belong to (-1 for any). */
+	const int interface_no;
 	/** Found descriptor fitting the description. */
 	usb_standard_endpoint_descriptor_t *descriptor;