Re: [PATCH 2/3] PCI: correctly detect ACPI PCI host bridge objects

[Yinghai Lu]

On Fri, Oct 26, 2012 at 2:10 AM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> On Thu, Oct 18, 2012 at 2:50 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>>
>> +static const struct acpi_device_id root_device_ids[] = {
>> +       {"PNP0A03", 0},
>> +       {"PNP0A08", 0},
>
> Why do we need PNP0A08 here?
>
> Per the PCI Firmware Spec, sec 4.1.5, PNP0A08 identifies a PCI Express
> or a PCI-X Mode 2 host bridge, and such a device is required to
> include PNP0A03 in _CID.  Therefore, it should be sufficient to look
> only for PNP0A03.

good, I removed that line and updated for-pci-split-pci-root-hp-2 branch.

Thanks

Yinghai
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