From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , alan@lxorguk.ukuu.org.uk, Johan Hovold Subject: [ 047/101] USB: mct_u232: fix broken close Date: Mon, 29 Oct 2012 14:35:00 -0700 Message-Id: <20121029213245.498794722@linuxfoundation.org> In-Reply-To: <20121029213240.128426598@linuxfoundation.org> References: <20121029213240.128426598@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 5260e458f5eff269a43e4f1e9c47186c57b88ddb upstream. Make sure generic close is called at close. The driver relies on the generic write implementation but did not call generic close. Note that the call to kill the read urb is not redundant, as mct_u232 uses an interrupt urb from the second port as the read urb and that generic close therefore fails to kill it. Compile-only tested. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mct_u232.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -524,12 +524,14 @@ static void mct_u232_dtr_rts(struct usb_ static void mct_u232_close(struct usb_serial_port *port) { - if (port->serial->dev) { - /* shutdown our urbs */ - usb_kill_urb(port->write_urb); - usb_kill_urb(port->read_urb); - usb_kill_urb(port->interrupt_in_urb); - } + /* + * Must kill the read urb as it is actually an interrupt urb, which + * generic close thus fails to kill. + */ + usb_kill_urb(port->read_urb); + usb_kill_urb(port->interrupt_in_urb); + + usb_serial_generic_close(port); } /* mct_u232_close */