From: Andri Yngvason andri.yngvason@marel.com

This fixes use after free introduced by the last cc770 patch.

Signed-off-by: Andri Yngvason andri.yngvason@marel.com Fixes: 746201235b3f ("can: cc770: Fix queue stall & dropped RTR reply") Cc: linux-stable stable@vger.kernel.org Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de --- drivers/net/can/cc770/cc770.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c index 2743d82d4424..6da69af103e6 100644 --- a/drivers/net/can/cc770/cc770.c +++ b/drivers/net/can/cc770/cc770.c @@ -706,13 +706,12 @@ static void cc770_tx_interrupt(struct net_device *dev, unsigned int o) return; }

- can_put_echo_skb(priv->tx_skb, dev, 0); - can_get_echo_skb(dev, 0); - cf = (struct can_frame *)priv->tx_skb->data; stats->tx_bytes += cf->can_dlc; stats->tx_packets++;

+ can_put_echo_skb(priv->tx_skb, dev, 0); + can_get_echo_skb(dev, 0); priv->tx_skb = NULL;

netif_wake_queue(dev);