3.5.7u1 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Johan Hovold <[email protected]> commit 2f0295adf6438188c4cd0868f2b1976a2b034e1d upstream. Make sure no control urb is submitted during close after a disconnect by checking the disconnected flag. Signed-off-by: Johan Hovold <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> Signed-off-by: Herton Ronaldo Krzesinski <[email protected]> --- drivers/usb/serial/quatech2.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index d170271..09d736a 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -434,6 +434,12 @@ static void qt2_close(struct usb_serial_port *port) port_priv->urb_in_use = false; spin_unlock_irqrestore(&port_priv->urb_lock, flags); + mutex_lock(&port->serial->disc_mutex); + if (port->serial->disconnected) { + mutex_unlock(&port->serial->disc_mutex); + return; + } + /* flush the port transmit buffer */ i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), @@ -465,6 +471,7 @@ static void qt2_close(struct usb_serial_port *port) dev_err(&port->dev, "%s - close port failed %i\n", __func__, i); + mutex_unlock(&port->serial->disc_mutex); } static void qt2_disconnect(struct usb_serial *serial) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
