From 548b55d00abf0882c6d35b30d0d973ece1d8509b Mon Sep 17 00:00:00 2001
From: Johan Hovold <jhovold@gmail.com>
Date: Mon, 16 Jan 2012 00:36:52 +0100
Subject: [PATCH 87/90] USB: cp210x: initialise baud rate at open

commit cdc32fd6f7b2b2580d7f1b74563f888e4dd9eb8a upstream.

The newer cp2104 devices require the baud rate to be initialised after
power on. Make sure it is set when port is opened.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Cc: Preston Fick <preston.fick@silabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/serial/cp210x.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index d2c4080..07d297f 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -408,6 +408,10 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port)
 	/* Configure the termios structure */
 	cp210x_get_termios(tty, port);
 
+	/* The baud rate must be initialised on cp2104 */
+	if (tty)
+		cp210x_change_speed(tty, port, NULL);
+
 	return usb_serial_generic_open(tty, port);
 }
 
-- 
1.7.9.4

