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/drivers/usb/host/ehci-st.c
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@@ -152,17 +152,14 @@
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 	struct resource *res_mem;
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 	struct usb_ehci_pdata *pdata = &ehci_platform_defaults;
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 	struct st_ehci_platform_priv *priv;
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-	struct ehci_hcd *ehci;
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 	int err, irq, clk = 0;
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 	if (usb_disabled())
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 		return -ENODEV;
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 	irq = platform_get_irq(dev, 0);
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-	if (irq < 0) {
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-		dev_err(&dev->dev, "no irq provided");
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+	if (irq < 0)
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 		return irq;
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-	}
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 	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
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 	if (!res_mem) {
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 		dev_err(&dev->dev, "no memory resource provided");
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@@ -177,7 +174,6 @@
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 	platform_set_drvdata(dev, hcd);
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 	dev->dev.platform_data = pdata;
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 	priv = hcd_to_ehci_priv(hcd);
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-	ehci = hcd_to_ehci(hcd);
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 	priv->phy = devm_phy_get(&dev->dev, "usb");
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 	if (IS_ERR(priv->phy)) {