tag	line	file	source code
UART_MSR_DCD	417	drivers/char/serial.c	if (status & UART_MSR_DCD)
UART_MSR_DCD	1166	drivers/char/serial.c	| ((status  & UART_MSR_DCD) ? TIOCM_CAR : 0)
UART_MSR_DCD	1547	drivers/char/serial.c	UART_MSR_DCD))) {