From: Russell King Date: Mon, 7 Jul 2014 23:23:25 +0000 (+0100) Subject: net: fec: ensure fec_enet_free_buffers() properly cleans the rings X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8b7c9efa018f96e58fa379ddb8c03f002c4f6a84;p=deliverable%2Flinux.git net: fec: ensure fec_enet_free_buffers() properly cleans the rings Ensure that we do not double-free any allocations, and that any transmit skbuffs are properly freed when we clean up the rings. Acked-by: Fugang Duan Signed-off-by: Russell King Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 9c5570a3e32e..5499bd8ad0a5 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -2079,8 +2079,13 @@ static void fec_enet_free_buffers(struct net_device *ndev) } bdp = fep->tx_bd_base; - for (i = 0; i < fep->tx_ring_size; i++) + for (i = 0; i < fep->tx_ring_size; i++) { kfree(fep->tx_bounce[i]); + fep->tx_bounce[i] = NULL; + skb = fep->tx_skbuff[i]; + fep->tx_skbuff[i] = NULL; + dev_kfree_skb(skb); + } } static int fec_enet_alloc_buffers(struct net_device *ndev)