修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/arch/xtensa/platforms/iss/network.c
..
..
@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *
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  * arch/xtensa/platforms/iss/network.c
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..
@@ -8,12 +9,6 @@
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  * Based on work form the UML team.
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  *
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  * Copyright 2005 Tensilica Inc.
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- *
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- * This program is free software; you can redistribute  it and/or modify it
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- * under  the terms of  the GNU General  Public License as published by the
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- * Free Software Foundation;  either version 2 of the  License, or (at your
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- * option) any later version.
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- *
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  */
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13
 
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 #define pr_fmt(fmt) "%s: " fmt, __func__
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@@ -30,7 +25,7 @@
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 #include <linux/etherdevice.h>
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 #include <linux/interrupt.h>
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 #include <linux/ioctl.h>
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-#include <linux/bootmem.h>
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+#include <linux/memblock.h>
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 #include <linux/ethtool.h>
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 #include <linux/rtnetlink.h>
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 #include <linux/platform_device.h>
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@@ -209,7 +204,7 @@
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 	return simc_write(lp->tp.info.tuntap.fd, (*skb)->data, (*skb)->len);
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 }
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-unsigned short tuntap_protocol(struct sk_buff *skb)
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+static unsigned short tuntap_protocol(struct sk_buff *skb)
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 {
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 	return eth_type_trans(skb, skb->dev);
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 }
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@@ -236,7 +231,7 @@
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 	init += sizeof(TRANSPORT_TUNTAP_NAME) - 1;
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 	if (*init == ',') {
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-		rem = split_if_spec(init + 1, &mac_str, &dev_name);
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+		rem = split_if_spec(init + 1, &mac_str, &dev_name, NULL);
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 		if (rem != NULL) {
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 			pr_err("%s: extra garbage on specification : '%s'\n",
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 			       dev->name, rem);
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@@ -460,7 +455,7 @@
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 {
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 }
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457
 
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-static void iss_net_tx_timeout(struct net_device *dev)
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+static void iss_net_tx_timeout(struct net_device *dev, unsigned int txqueue)
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 {
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 }
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461
 
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@@ -482,7 +477,7 @@
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 	return -EINVAL;
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 }
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-void iss_net_user_timer_expire(struct timer_list *unused)
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+static void iss_net_user_timer_expire(struct timer_list *unused)
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 {
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 }
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@@ -507,16 +502,24 @@
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 	.ndo_set_rx_mode	= iss_net_set_multicast_list,
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 };
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-static int iss_net_configure(int index, char *init)
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+static void iss_net_pdev_release(struct device *dev)
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+{
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+	struct platform_device *pdev = to_platform_device(dev);
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+	struct iss_net_private *lp =
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+		container_of(pdev, struct iss_net_private, pdev);
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+
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+	free_netdev(lp->dev);
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+}
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+
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+static void iss_net_configure(int index, char *init)
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 {
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 	struct net_device *dev;
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 	struct iss_net_private *lp;
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-	int err;
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518
 
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 	dev = alloc_etherdev(sizeof(*lp));
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 	if (dev == NULL) {
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 		pr_err("eth_configure: failed to allocate device\n");
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-		return 1;
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+		return;
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 	}
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 	/* Initialize private element. */
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@@ -545,7 +548,7 @@
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 	if (!tuntap_probe(lp, index, init)) {
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 		pr_err("%s: invalid arguments. Skipping device!\n",
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 		       dev->name);
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-		goto errout;
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+		goto err_free_netdev;
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 	}
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 	pr_info("Netdevice %d (%pM)\n", index, dev->dev_addr);
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@@ -553,7 +556,8 @@
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 	/* sysfs register */
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 	if (!driver_registered) {
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-		platform_driver_register(&iss_net_driver);
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+		if (platform_driver_register(&iss_net_driver))
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+			goto err_free_netdev;
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 		driver_registered = 1;
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 	}
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@@ -563,7 +567,9 @@
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 	lp->pdev.id = index;
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 	lp->pdev.name = DRIVER_NAME;
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-	platform_device_register(&lp->pdev);
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+	lp->pdev.dev.release = iss_net_pdev_release;
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+	if (platform_device_register(&lp->pdev))
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+		goto err_free_netdev;
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 	SET_NETDEV_DEV(dev, &lp->pdev.dev);
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 	dev->netdev_ops = &iss_netdev_ops;
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@@ -572,23 +578,20 @@
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 	dev->irq = -1;
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579
 
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 	rtnl_lock();
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-	err = register_netdevice(dev);
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-	rtnl_unlock();
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-
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-	if (err) {
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+	if (register_netdevice(dev)) {
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+		rtnl_unlock();
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 		pr_err("%s: error registering net device!\n", dev->name);
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-		/* XXX: should we call ->remove() here? */
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-		free_netdev(dev);
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-		return 1;
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+		platform_device_unregister(&lp->pdev);
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+		return;
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 	}
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+	rtnl_unlock();
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 	timer_setup(&lp->tl, iss_net_user_timer_expire, 0);
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-	return 0;
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+	return;
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-errout:
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-	/* FIXME: unregister; free, etc.. */
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-	return -EIO;
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+err_free_netdev:
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+	free_netdev(dev);
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 }
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 /* ------------------------------------------------------------------------- */
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@@ -646,7 +649,7 @@
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 		return 1;
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 	}
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-	new = alloc_bootmem(sizeof(*new));
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+	new = memblock_alloc(sizeof(*new), SMP_CACHE_BYTES);
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 	if (new == NULL) {
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 		pr_err("Alloc_bootmem failed\n");
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 		return 1;