From 8b7c9efa018f96e58fa379ddb8c03f002c4f6a84 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 8 Jul 2014 00:23:25 +0100 Subject: [PATCH] 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 --- drivers/net/ethernet/freescale/fec_main.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) 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) -- 2.20.1