diff linux-lts-quantal-3.5.0/drivers/usb/host/pci-quirks.c orig/drivers/usb/host/pci-quirks.c

add_usb3_switch_boot_parameter.patch

94,107d93
< u32 intel_xusb2pr = 0xFFFFFFFF;
< 
< static int __init intel_xusb2pr_setup(char *str)
< {
< 	u32 value;
< 	if (kstrtoul(str, 16, &value)) {
< 		printk("Failed to convert value=%s\n", str);
< 		return 1;
< 	}
< 	intel_xusb2pr = value;
< 	return 1;
< }
< __setup("USB_INTEL_XUSB2PR=", intel_xusb2pr_setup);
< 
836,844c822,824
< 	if (intel_xusb2pr == 0xFFFFFFFF) {
< 		pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
< 				cpu_to_le32(ports_available));
< 		printk("USB3: set value = 0x%08X\n", ports_available);
< 	} else {
< 		pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
< 				intel_xusb2pr);
< 		printk("USB3: set value = 0x%08X\n", intel_xusb2pr);
< 	}
---
> 	pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
> 			cpu_to_le32(ports_available));
>