usbd_xfer_max_framelen
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_framelen(xfer));
mfl = usbd_xfer_max_framelen(xfer);
mfl = usbd_xfer_max_framelen(xfer);
if (isize > (int)usbd_xfer_max_framelen(sc->sc_xfer[UMS_INTR_DT])) {
usbd_xfer_max_framelen(sc->sc_xfer[UMS_INTR_DT]));
maxp = usbd_xfer_max_framelen(sc->sc_xfer[UMCT_BULK_DT_RD]);
usb_frlength_t usbd_xfer_max_framelen(struct usb_xfer *xfer);
usbd_xfer_max_framelen(xfer));
usbd_copy_out(pc, frame_no * usbd_xfer_max_framelen(xfer),
space = usbd_xfer_max_framelen(xfer) * nframes;
min(offset, usbd_xfer_max_framelen(xfer)));