Re: [PATCH] Re: regression, 2.6.26-rc7, pnp: quirk_system_pci_resources()

From: Rene Herman
Date: Wed Jun 25 2008 - 14:08:04 EST


On 24-06-08 17:17, Bjorn Helgaas wrote:

I think your patch makes sense, and you can add my ack.

Thank you, done. I used pnp_resource_type_name() from your patches...

I do have the feeling that the reason we need the quirk is because we
aren't handling those PNP device resources quite correctly in the first place. But I don't have any good ideas about what's wrong yet.

My first thought was that those regions might be marked as ACPI_PRODUCER resources (i.e., the PNP device forwards transactions in that region to a downstream device). In that case, the PNP device
is really a bridge, and it shouldn't reserve the region (or at least
should not mark it as busy). But I think we currently ignore ACPI_PRODUCER resources completely, so I don't see how that could cause this problem.

I'm not up on the ACPI side of things at least, but am available for any testing you'd like me to do. Just say the word.

Rene.
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