UART_EXAR_8XMODE  250 drivers/tty/serial/8250/8250_exar.c 	writeb(0x00, p + UART_EXAR_8XMODE);
UART_EXAR_8XMODE  500 drivers/tty/serial/8250/8250_exar.c 	writeb(0x00, p + UART_EXAR_8XMODE);