USB: ftdi_sio: remove redundant raise of DTR/RTS at open

Do not raise DTR/RTS a second time in set_termios at open -- this has
already been taken care of by the tty layer.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index abcaeaf..86f6dfe 100644 (file)
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -2187,7 +2187,7 @@ no_data_parity_stop_changes:
                        dev_err(ddev, "%s urb failed to set baudrate\n", __func__);
                mutex_unlock(&priv->cfg_lock);
                /* Ensure RTS and DTR are raised when baudrate changed from 0 */
-               if (!old_termios || (old_termios->c_cflag & CBAUD) == B0)
+               if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
                        set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
        }