can: kvaser_usb: free buf in error paths

commit 435019b48033138581a6171093b181fc6b4d3d30 upstream.

The allocated buffer was not freed if usb_submit_urb() failed.

Signed-off-by: Jimmy Assarsson <jimmyassarsson@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c
index c2e2821a3346407b7f7e43629df2e0fd6ac7b676..8b95c98b226f41ff14d9f0e2051dda47e20ec385 100644 (file)
--- a/drivers/net/can/usb/kvaser_usb.c
+++ b/drivers/net/can/usb/kvaser_usb.c
@@ -809,6 +809,7 @@ static int kvaser_usb_simple_msg_async(struct kvaser_usb_net_priv *priv,
        if (err) {
                netdev_err(netdev, "Error transmitting URB\n");
                usb_unanchor_urb(urb);
+               kfree(buf);
                usb_free_urb(urb);
                return err;
        }
@@ -1767,6 +1768,7 @@ static netdev_tx_t kvaser_usb_start_xmit(struct sk_buff *skb,
                spin_unlock_irqrestore(&priv->tx_contexts_lock, flags);
 
                usb_unanchor_urb(urb);
+               kfree(buf);
 
                stats->tx_dropped++;