diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 21c053c31b9ef2086c972416d92d48491b809df0..683304d60615a334554c3b6a0328de5d96879df5 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1556,11 +1556,6 @@ static int ftdi_open(struct tty_struct *tty,
 	if (tty)
 		ftdi_set_termios(tty, port, tty->termios);
 
-	/* FIXME: Flow control might be enabled, so it should be checked -
-	   we have no control of defaults! */
-	/* Turn on RTS and DTR since we are not flow controlling by default */
-	set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
-
 	/* Not throttled */
 	spin_lock_irqsave(&priv->rx_lock, flags);
 	priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED);