From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/drivers/net/usb/smsc75xx.c | 58 +++++++++++++++++++++++++---------------------------------
1 files changed, 25 insertions(+), 33 deletions(-)
diff --git a/kernel/drivers/net/usb/smsc75xx.c b/kernel/drivers/net/usb/smsc75xx.c
index 8b9fd4e..6310841 100644
--- a/kernel/drivers/net/usb/smsc75xx.c
+++ b/kernel/drivers/net/usb/smsc75xx.c
@@ -1,19 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
*
* Copyright (C) 2007-2010 SMSC
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*****************************************************************************/
@@ -102,7 +90,9 @@
ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
| USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, index, &buf, 4);
- if (unlikely(ret < 0)) {
+ if (unlikely(ret < 4)) {
+ ret = ret < 0 ? ret : -ENODATA;
+
netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
index, ret);
return ret;
@@ -673,8 +663,7 @@
return;
}
- memcpy(&intdata, urb->transfer_buffer, 4);
- le32_to_cpus(&intdata);
+ intdata = get_unaligned_le32(urb->transfer_buffer);
netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
@@ -770,13 +759,14 @@
static void smsc75xx_init_mac_address(struct usbnet *dev)
{
- const u8 *mac_addr;
-
/* maybe the boot loader passed the MAC address in devicetree */
- mac_addr = of_get_mac_address(dev->udev->dev.of_node);
- if (mac_addr) {
- memcpy(dev->net->dev_addr, mac_addr, ETH_ALEN);
- return;
+ if (!eth_platform_get_mac_address(&dev->udev->dev,
+ dev->net->dev_addr)) {
+ if (is_valid_ether_addr(dev->net->dev_addr)) {
+ /* device tree values are valid so use them */
+ netif_dbg(dev, ifup, dev->net, "MAC address read from the device tree\n");
+ return;
+ }
}
/* try reading mac address from EEPROM */
@@ -2199,12 +2189,10 @@
struct sk_buff *ax_skb;
unsigned char *packet;
- memcpy(&rx_cmd_a, skb->data, sizeof(rx_cmd_a));
- le32_to_cpus(&rx_cmd_a);
+ rx_cmd_a = get_unaligned_le32(skb->data);
skb_pull(skb, 4);
- memcpy(&rx_cmd_b, skb->data, sizeof(rx_cmd_b));
- le32_to_cpus(&rx_cmd_b);
+ rx_cmd_b = get_unaligned_le32(skb->data);
skb_pull(skb, 4 + RXW_PADDING);
packet = skb->data;
@@ -2212,6 +2200,13 @@
/* get the packet length */
size = (rx_cmd_a & RX_CMD_A_LEN) - RXW_PADDING;
align_count = (4 - ((size + RXW_PADDING) % 4)) % 4;
+
+ if (unlikely(size > skb->len)) {
+ netif_dbg(dev, rx_err, dev->net,
+ "size err rx_cmd_a=0x%08x\n",
+ rx_cmd_a);
+ return 0;
+ }
if (unlikely(rx_cmd_a & RX_CMD_A_RED)) {
netif_dbg(dev, rx_err, dev->net,
@@ -2276,6 +2271,7 @@
struct sk_buff *skb, gfp_t flags)
{
u32 tx_cmd_a, tx_cmd_b;
+ void *ptr;
if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
dev_kfree_skb_any(skb);
@@ -2296,13 +2292,9 @@
tx_cmd_b = 0;
}
- skb_push(skb, 4);
- cpu_to_le32s(&tx_cmd_b);
- memcpy(skb->data, &tx_cmd_b, 4);
-
- skb_push(skb, 4);
- cpu_to_le32s(&tx_cmd_a);
- memcpy(skb->data, &tx_cmd_a, 4);
+ ptr = skb_push(skb, 8);
+ put_unaligned_le32(tx_cmd_a, ptr);
+ put_unaligned_le32(tx_cmd_b, ptr + 4);
return skb;
}
--
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