tag	line	file	source code
UART_MCR_OUT2	868	drivers/char/serial.c	info->MCR = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2;
UART_MCR_OUT2	2003	drivers/char/serial.c	UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2);