tag	line	file	source code
UART_LCR	167	kernel/chr_drv/serial.c	port += UART_LCR;
UART_LCR	702	kernel/chr_drv/serial.c	outb_p(UART_LCR_WLEN8, UART_LCR + port);  /* reset DLAB */
UART_LCR	807	kernel/chr_drv/serial.c	outb_p(cval | UART_LCR_DLAB, UART_LCR + port);  /* set DLAB */
UART_LCR	810	kernel/chr_drv/serial.c	outb(cval, UART_LCR + port);    /* reset DLAB */