UART_EXAR_TXTRG   252 drivers/tty/serial/8250/8250_exar.c 	writeb(32, p + UART_EXAR_TXTRG);
UART_EXAR_TXTRG   502 drivers/tty/serial/8250/8250_exar.c 	writeb(128, p + UART_EXAR_TXTRG);