From mboxrd@z Thu Jan 1 00:00:00 1970 From: rmk+kernel@arm.linux.org.uk (Russell King) Date: Tue, 08 Jul 2014 00:23:25 +0100 Subject: [PATCH A 11/12] net: fec: ensure fec_enet_free_buffers() properly cleans the rings In-Reply-To: <20140707232148.GG21766@n2100.arm.linux.org.uk> References: <20140707232148.GG21766@n2100.arm.linux.org.uk> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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) -- 1.8.3.1