52 lines
1.7 KiB
Diff
52 lines
1.7 KiB
Diff
From bf80eaa34a1b9f503a779b13deed2fda642a1e87 Mon Sep 17 00:00:00 2001
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From: Igor Pecovnik <igor.pecovnik@gmail.com>
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Date: Wed, 21 Jul 2021 20:59:39 +0000
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Subject: [PATCH] Disable MTU validation
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This patch reverts: https://github.com/torvalds/linux/commit/eaf4fac478077d4ed57cbca2c044c4b58a96bd98
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It works around following issues:
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- no way to change MTU (tx_fifo_size is reported as 0 for Rockchip's dwmac)
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Signed-off-by: Piotr Szczepanik <piter75@gmail.com>
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Signed-off-by: Igor Pecovnik <igor.pecovnik@gmail.com>
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---
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drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 12 ------------
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1 file changed, 12 deletions(-)
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diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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index 91cd5073d..b409a7598 100644
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--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@@ -5435,14 +5435,8 @@ static void stmmac_set_rx_mode(struct net_device *dev)
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static int stmmac_change_mtu(struct net_device *dev, int new_mtu)
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{
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struct stmmac_priv *priv = netdev_priv(dev);
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- int txfifosz = priv->plat->tx_fifo_size;
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const int mtu = new_mtu;
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- if (txfifosz == 0)
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- txfifosz = priv->dma_cap.tx_fifo_size;
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-
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- txfifosz /= priv->plat->tx_queues_to_use;
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-
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if (netif_running(dev)) {
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netdev_err(priv->dev, "must be stopped to change its MTU\n");
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return -EBUSY;
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@@ -5453,12 +5447,6 @@ static int stmmac_change_mtu(struct net_device *dev, int new_mtu)
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return -EINVAL;
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}
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- new_mtu = STMMAC_ALIGN(new_mtu);
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-
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- /* If condition true, FIFO is too small or MTU too large */
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- if ((txfifosz < new_mtu) || (new_mtu > BUF_SIZE_16KiB))
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- return -EINVAL;
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-
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dev->mtu = mtu;
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netdev_update_features(dev);
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--
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Created with Armbian build tools https://github.com/armbian/build
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