UGEN_BBSIZE
error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE,
while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) {
char sc_buffer[UGEN_BBSIZE];
sce->ra_wb_reqsize = UGEN_BBSIZE;
error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE,
while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) {