On 2014/2/10 18:21, Oliver Neukum wrote:
>
> On Mon, 2014-02-10 at 12:04 +0800, Yijing Wang wrote:
>> +static u64 pci_device_serial_number(struct pci_bus *bus, int devfn)
>> +{
>> + int pos;
>> + u32 lo, hi;
>> +
>> + if (!pci_bus_find_capability(bus, devfn, PCI_CAP_ID_EXP))
>> +
On Mon, 2014-02-10 at 12:04 +0800, Yijing Wang wrote:
> +static u64 pci_device_serial_number(struct pci_bus *bus, int devfn)
> +{
> + int pos;
> + u32 lo, hi;
> +
> + if (!pci_bus_find_capability(bus, devfn, PCI_CAP_ID_EXP))
> + return 0;
> +
> + pos = pci_bus
Add support for the Device Serial Number capability, so we can use the
unique device serial number to identify the physical device. This helps
determine whether a device was replaced while the system was suspended.
[bhelgaas: changelog, drop pci_dsn_init(), spell out "serial_number"]
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