usb_endpoint_xfer_isoc 785 include/linux/usb.h return (usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_in(epd)); usb_endpoint_xfer_isoc 798 include/linux/usb.h return (usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd));