netdev - [PATCH] net: ethernet: mtk-star-emac: return ok when xmit drops

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Date:   Thu, 12 Nov 2020 09:48:33 +0100
From:   Vincent Stehlé <vincent.stehle@...oste.net>
To:     netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Vincent Stehlé <vincent.stehle@...oste.net>,
        "David S . Miller" <davem@...emloft.net>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH] net: ethernet: mtk-star-emac: return ok when xmit drops

The ndo_start_xmit() method must return NETDEV_TX_OK if the DMA mapping
fails, after freeing the socket buffer.
Fix the mtk_star_netdev_start_xmit() function accordingly.

Fixes: 8c7bd5a454ff ("net: ethernet: mtk-star-emac: new driver")
Signed-off-by: Vincent Stehlé <vincent.stehle@...oste.net>
Cc: David S. Miller <davem@...emloft.net>
Cc: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 drivers/net/ethernet/mediatek/mtk_star_emac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_star_emac.c b/drivers/net/ethernet/mediatek/mtk_star_emac.c
index 13250553263b5..e56a26f797f28 100644
--- a/drivers/net/ethernet/mediatek/mtk_star_emac.c
+++ b/drivers/net/ethernet/mediatek/mtk_star_emac.c
@@ -1053,7 +1053,7 @@ static int mtk_star_netdev_start_xmit(struct sk_buff *skb,
 err_drop_packet:
 	dev_kfree_skb(skb);
 	ndev->stats.tx_dropped++;
-	return NETDEV_TX_BUSY;
+	return NETDEV_TX_OK;
 }
 
 /* Returns the number of bytes sent or a negative number on the first
-- 
2.28.0