diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 4a0f86fa1e90566c03c693c413a581a80e40e7b6..6b844d422578e5661780d4ef8a13158f5830a192 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1256,12 +1256,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
 
 static void atmel_set_ldisc(struct uart_port *port, int new)
 {
-	int line = port->line;
-
-	if (line >= port->state->port.tty->driver->num)
-		return;
-
-	if (port->state->port.tty->ldisc->ops->num == N_PPS) {
+	if (new == N_PPS) {
 		port->flags |= UPF_HARDPPS_CD;
 		atmel_enable_ms(port);
 	} else {