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))
>> + return 0;
>> +
>> + pos = pci_bus_find_ext_capability(bus, devfn,
>> PCI_EXT_CAP_ID_DSN);
>> + if (!pos)
>> + return 0;
>> +
>> + pci_bus_read_config_dword(bus, devfn, pos + 4, &lo);
>> + pci_bus_read_config_dword(bus, devfn, pos + 8, &hi);
>
> We have no macro for that?
Yes, I will try to define macros for them, thanks!
>
>> + return ((u64)hi << 32) | lo;
>> +}
>
> Regards
> Oliver
>
>
>
>
> .
>
--
Thanks!
Yijing
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