taglinefilesource code
UART_MSR_DCD315kernel/chr_drv/serial.cif (status & UART_MSR_DCD) {
UART_MSR_DCD824kernel/chr_drv/serial.c| ((status  & UART_MSR_DCD) ? TIOCM_CAR : 0)
UART_MSR_DCD1036kernel/chr_drv/serial.c(serial_in(info, UART_MSR) & UART_MSR_DCD)))