net: lantiq_etop: don't free skb when returning NETDEV_TX_BUSY

[ Upstream commit 9c1eaa27ec599fcc25ed4970c0b73c247d147a2b ]

The ndo_start_xmit() method must not free skb when returning
NETDEV_TX_BUSY, since caller is going to requeue freed skb.

Fixes: 504d4721ee8e ("MIPS: Lantiq: Add ethernet driver")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c
index 62f8c52..057d655 100644 (file)
--- a/drivers/net/ethernet/lantiq_etop.c
+++ b/drivers/net/ethernet/lantiq_etop.c
@@ -466,7 +466,6 @@ ltq_etop_tx(struct sk_buff *skb, struct net_device *dev)
        len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
 
        if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) || ch->skb[ch->dma.desc]) {
-               dev_kfree_skb_any(skb);
                netdev_err(dev, "tx ring full\n");
                netif_tx_stop_queue(txq);
                return NETDEV_TX_BUSY;