tag	line	file	source code
UART_LCR_DLAB	270	drivers/char/console.c	serial_echo_outb(comstat | UART_LCR_DLAB, UART_LCR);
UART_LCR_DLAB	1260	drivers/char/serial.c	serial_outp(info, UART_LCR, cval | UART_LCR_DLAB);  /* set DLAB */
UART_LCR_DLAB	2581	drivers/char/serial.c	serial_outp(info, UART_LCR, scratch2 | UART_LCR_DLAB);
UART_LCR_DLAB	2598	drivers/char/serial.c	serial_outp(info, UART_LCR, scratch2 | UART_LCR_DLAB);