add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/net/ethernet/wiznet/w5100.c
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@@ -1,10 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Ethernet driver for the WIZnet W5100 chip.
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  *
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  * Copyright (C) 2006-2008 WIZnet Co.,Ltd.
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  * Copyright (C) 2012 Mike Sinkovsky <msink@permonline.ru>
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- *
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- * Licensed under the GPL-2 or later.
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  */
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 #include <linux/kernel.h>
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@@ -219,7 +218,6 @@
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 static inline int w5100_write_direct(struct net_device *ndev, u32 addr, u8 data)
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 {
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 	__w5100_write_direct(ndev, addr, data);
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-	mmiowb();
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 	return 0;
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 }
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@@ -236,7 +234,6 @@
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 {
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 	__w5100_write_direct(ndev, addr, data >> 8);
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 	__w5100_write_direct(ndev, addr + 1, data);
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-	mmiowb();
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 	return 0;
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 }
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@@ -259,8 +256,6 @@
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 	for (i = 0; i < len; i++, addr++)
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 		__w5100_write_direct(ndev, addr, *buf++);
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-
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-	mmiowb();
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 	return 0;
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 }
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@@ -375,7 +370,6 @@
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 	for (i = 0; i < len; i++)
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 		*buf++ = w5100_read_direct(ndev, W5100_IDM_DR);
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-	mmiowb();
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 	spin_unlock_irqrestore(&mmio_priv->reg_lock, flags);
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 	return 0;
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@@ -394,7 +388,6 @@
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 	for (i = 0; i < len; i++)
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 		__w5100_write_direct(ndev, W5100_IDM_DR, *buf++);
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-	mmiowb();
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 	spin_unlock_irqrestore(&mmio_priv->reg_lock, flags);
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 	return 0;
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@@ -797,7 +790,7 @@
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 	w5100_restart(priv->ndev);
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 }
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-static void w5100_tx_timeout(struct net_device *ndev)
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+static void w5100_tx_timeout(struct net_device *ndev, unsigned int txqueue)
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 {
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 	struct w5100_priv *priv = netdev_priv(ndev);
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@@ -1166,7 +1159,7 @@
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 	INIT_WORK(&priv->setrx_work, w5100_setrx_work);
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 	INIT_WORK(&priv->restart_work, w5100_restart_work);
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-	if (mac_addr)
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+	if (!IS_ERR_OR_NULL(mac_addr))
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 		memcpy(ndev->dev_addr, mac_addr, ETH_ALEN);
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 	else
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 		eth_hw_addr_random(ndev);