SC16IS7XX_FIFO_SIZE
port->fifosize = SC16IS7XX_FIFO_SIZE;
.max_raw_read = SC16IS7XX_FIFO_SIZE,
.max_raw_write = SC16IS7XX_FIFO_SIZE,
unsigned char buf[SC16IS7XX_FIFO_SIZE]; /* Rx buffer. */
if (txlen > SC16IS7XX_FIFO_SIZE) {
txlen, SC16IS7XX_FIFO_SIZE);