HelenOS sources

USB_DEVREQ_SET_INTERFACE   89 uspace/drv/bus/usb/xhci/transfers.c 	    setup->request == USB_DEVREQ_SET_INTERFACE);
USB_DEVREQ_SET_INTERFACE  655 uspace/lib/usbdev/src/request.c 	    USB_DEVREQ_SET_INTERFACE,
USB_DEVREQ_SET_INTERFACE  279 uspace/lib/usbhost/src/utility.c 	case USB_DEVREQ_SET_INTERFACE: