From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757195Ab2BAVJf (ORCPT ); Wed, 1 Feb 2012 16:09:35 -0500 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:59192 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757061Ab2BAVJT (ORCPT ); Wed, 1 Feb 2012 16:09:19 -0500 X-Sasl-enc: 4ajF1j92vsxxAbaSz/qja8LuyymUBACJLjQEv705MB0C 1328130558 X-Mailbox-Line: From gregkh@clark.kroah.org Wed Feb 1 12:57:43 2012 Message-Id: <20120201205743.074116436@clark.kroah.org> User-Agent: quilt/0.51-15.1 Date: Wed, 01 Feb 2012 12:56:44 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Johan Hovold , Preston Fick Subject: [64/65] USB: cp210x: initialise baud rate at open In-Reply-To: <20120201210236.GA25966@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold 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 Cc: Preston Fick Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -408,6 +408,10 @@ static int cp210x_open(struct tty_struct /* 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); }