From dede9ba02705e84ff5aae0ebffbad5a37ea24a54 Mon Sep 17 00:00:00 2001 From: Zhang Changzhong Date: Fri, 28 Oct 2022 10:09:11 +0800 Subject: [PATCH] net: fec: fix improper use of NETDEV_TX_BUSY [ Upstream commit 06a4df5863f73af193a4ff7abf7cb04058584f06 ] The ndo_start_xmit() method must not free skb when returning NETDEV_TX_BUSY, since caller is going to requeue freed skb. Fix it by returning NETDEV_TX_OK in case of dma_map_single() fails. Fixes: 79f339125ea3 ("net: fec: Add software TSO support") Signed-off-by: Zhang Changzhong Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/freescale/fec_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 313ae81..a829ba1 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -656,7 +656,7 @@ fec_enet_txq_put_data_tso(struct fec_enet_priv_tx_q *txq, struct sk_buff *skb, dev_kfree_skb_any(skb); if (net_ratelimit()) netdev_err(ndev, "Tx DMA memory map failed\n"); - return NETDEV_TX_BUSY; + return NETDEV_TX_OK; } bdp->cbd_datlen = cpu_to_fec16(size); @@ -718,7 +718,7 @@ fec_enet_txq_put_hdr_tso(struct fec_enet_priv_tx_q *txq, dev_kfree_skb_any(skb); if (net_ratelimit()) netdev_err(ndev, "Tx DMA memory map failed\n"); - return NETDEV_TX_BUSY; + return NETDEV_TX_OK; } } -- 2.7.4