tag	line	file	source code
UART_LCR_DLAB	1246	drivers/char/serial.c	serial_outp(info, UART_LCR, cval | UART_LCR_DLAB);  /* set DLAB */
UART_LCR_DLAB	2513	drivers/char/serial.c	serial_outp(info, UART_LCR, scratch2 | UART_LCR_DLAB);
UART_LCR_DLAB	2530	drivers/char/serial.c	serial_outp(info, UART_LCR, scratch2 | UART_LCR_DLAB);