| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 53/67] net: ethernet: mtk_eth_soc: fix MTU warnings | Date | Mon, 10 Aug 2020 17:21:40 +0200 |
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From: Landen Chao <landen.chao@mediatek.com>
[ Upstream commit 555a893303872e044fb86f0a5834ce78d41ad2e2 ]
in recent kernel versions there are warnings about incorrect MTU size like these:
eth0: mtu greater than device maximum mtk_soc_eth 1b100000.ethernet eth0: error -22 setting MTU to include DSA overhead
Fixes: bfcb813203e6 ("net: dsa: configure the MTU for switch ports") Fixes: 72579e14a1d3 ("net: dsa: don't fail to probe if we couldn't set the MTU") Fixes: 7a4c53bee332 ("net: report invalid mtu value via netlink extack") Signed-off-by: Landen Chao <landen.chao@mediatek.com> Signed-off-by: Frank Wunderlich <frank-w@public-files.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2878,6 +2878,8 @@ static int mtk_add_mac(struct mtk_eth *e eth->netdev[id]->irq = eth->irq[0]; eth->netdev[id]->dev.of_node = np; + eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; + return 0; free_netdev:
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