UPSTAT_DCD_ENABLE   53 drivers/tty/serial/serial_core.c 	return !!(uport->status & UPSTAT_DCD_ENABLE);
UPSTAT_DCD_ENABLE  527 drivers/tty/serial/serial_core.c 		uport->status &= ~UPSTAT_DCD_ENABLE;
UPSTAT_DCD_ENABLE  529 drivers/tty/serial/serial_core.c 		uport->status |= UPSTAT_DCD_ENABLE;