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-rw-r--r--drivers/usb/serial/quatech2.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index 085cad471c41..3c278521f7e2 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -422,12 +422,6 @@ 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),
@@ -458,8 +452,6 @@ static void qt2_close(struct usb_serial_port *port)
if (i < 0)
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)