tag	line	file	source code
UART_FCR_CLEAR_CMD	689	kernel/chr_drv/serial.c	outb_p(UART_FCR_CLEAR_CMD, UART_FCR + port);
UART_FCR_CLEAR_CMD	750	kernel/chr_drv/serial.c	outb_p(UART_FCR_CLEAR_CMD, UART_FCR + info->port); /* disable FIFO's */