HelenOS sources

USB_HIDREQ_SET_PROTOCOL   63 uspace/app/vuhid/main.c 		CLASS_REQ_OUT(USB_REQUEST_RECIPIENT_INTERFACE, USB_HIDREQ_SET_PROTOCOL),
USB_HIDREQ_SET_PROTOCOL  134 uspace/lib/usbhid/src/hidreq.c 	    USB_HIDREQ_SET_PROTOCOL, protocol, iface_no, NULL, 0);