diff options
| author | Johan Hovold <jhovold@gmail.com> | 2012-10-25 10:29:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-25 09:36:57 -0700 |
| commit | 2ee44fbeac92c36e53779a57ee84cfee1affe418 (patch) | |
| tree | 2af799d3fe59dc19fc994e65f71a7d4d505c9ada /drivers/usb | |
| parent | 50dde8686eec41bf3d7cbec7a6f76c073ab01903 (diff) | |
| download | linux-2ee44fbeac92c36e53779a57ee84cfee1affe418.tar.gz linux-2ee44fbeac92c36e53779a57ee84cfee1affe418.tar.xz | |
USB: metro-usb: fix io after disconnect
Make sure no control urb is submitted during close after a disconnect by
checking the disconnected flag.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/metro-usb.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c index 25cb97c25ad4..6f29c74eb769 100644 --- a/drivers/usb/serial/metro-usb.c +++ b/drivers/usb/serial/metro-usb.c @@ -179,16 +179,13 @@ static void metrousb_cleanup(struct usb_serial_port *port) { dev_dbg(&port->dev, "%s\n", __func__); - if (port->serial->dev) { - /* Shutdown any interrupt in urbs. */ - if (port->interrupt_in_urb) { - usb_unlink_urb(port->interrupt_in_urb); - usb_kill_urb(port->interrupt_in_urb); - } - - /* Send deactivate cmd to device */ + usb_unlink_urb(port->interrupt_in_urb); + usb_kill_urb(port->interrupt_in_urb); + + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) metrousb_send_unidirectional_cmd(UNI_CMD_CLOSE, port); - } + mutex_unlock(&port->serial->disc_mutex); } static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port) |