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Date: Tue, 28 Jul 2020 14:27:43 +0200 From: Frank Wunderlich <frank-w@...lic-files.de> To: linux-mediatek@...ts.infradead.org Cc: Landen Chao <landen.chao@...iatek.com>, Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>, Sean Wang <sean.wang@...iatek.com>, Mark Lee <Mark-MC.Lee@...iatek.com>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>, netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, René van Dorst <opensource@...rst.com>, Frank Wunderlich <frank-w@...lic-files.de> Subject: [PATCH v3] net: ethernet: mtk_eth_soc: fix mtu warning From: Landen Chao <landen.chao@...iatek.com> 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: René van Dorst <opensource@...rst.com> Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de> --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 85735d32ecb0..a1c45b39a230 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2891,6 +2891,8 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) 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: -- 2.25.1
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