Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753516Ab3F1TIu (ORCPT ); Fri, 28 Jun 2013 15:08:50 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:41812 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752524Ab3F1S4r (ORCPT ); Fri, 28 Jun 2013 14:56:47 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Johan Hovold , Greg Kroah-Hartman , Kamal Mostafa Subject: [PATCH 043/105] USB: spcp8x5: fix device initialisation at open Date: Fri, 28 Jun 2013 11:51:05 -0700 Message-Id: <1372445527-24414-44-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1372445527-24414-1-git-send-email-kamal@canonical.com> References: <1372445527-24414-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2599 Lines: 74 3.8.13.4 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 5e4211f1c47560c36a8b3d4544dfd866dcf7ccd0 upstream. Do not use uninitialised termios data to determine when to configure the device at open. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman Signed-off-by: Kamal Mostafa --- drivers/usb/serial/spcp8x5.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 85de44d..76f11d0 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -314,7 +314,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; unsigned int cflag = tty->termios.c_cflag; - unsigned int old_cflag = old_termios->c_cflag; unsigned short uartdata; unsigned char buf[2] = {0, 0}; int baud; @@ -323,15 +322,15 @@ static void spcp8x5_set_termios(struct tty_struct *tty, /* check that they really want us to change something */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; /* set DTR/RTS active */ spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; - if ((old_cflag & CBAUD) == B0) { + if (old_termios && (old_termios->c_cflag & CBAUD) == B0) { priv->line_control |= MCR_DTR; - if (!(old_cflag & CRTSCTS)) + if (!(old_termios->c_cflag & CRTSCTS)) priv->line_control |= MCR_RTS; } if (control != priv->line_control) { @@ -421,7 +420,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, * status of the device. */ static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; struct usb_serial *serial = port->serial; struct spcp8x5_private *priv = usb_get_serial_port_data(port); int ret; @@ -442,7 +440,7 @@ static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) /* Setup termios */ if (tty) - spcp8x5_set_termios(tty, port, &tmp_termios); + spcp8x5_set_termios(tty, port, NULL); spcp8x5_get_msr(serial->dev, &status, priv->type); -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/