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SubjectRe: [Regression] PCI resources allocation problem on HP nx6325
On Sun, Aug 02, 2009 at 04:19:47PM +0200, Rafael J. Wysocki wrote:
> Hi Matthew,
>
> As reported at
>
> http://bugzilla.kernel.org/show_bug.cgi?id=13891
>
> there is a problem with allocating PCI resources on HP nx6325 introduced by
> your commit a76117dfd687ec4be0a9a05214f3009cc5f73a42
> (x86: Use pci_claim_resource).
>
> On this particular box it causes the audio adapter's PCI memory space to
> be allocated for something else.

Could you also attach lspci -v? It seems that the 0000:00:12.0 resource
is nesting inside the 0000:00:14.2 resource, which is just not possible.
Also, could you boot -rc5 (without
a76117dfd687ec4be0a9a05214f3009cc5f73a42 reverted) with this patch
applied? It may give us some idea of what's going wrong.

diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index ec80b88..3f422db 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -105,6 +105,10 @@ int pci_claim_resource(struct pci_dev *dev, int resource)

root = pci_find_parent_resource(dev, res);

+if (root)
+ printk("Inserting resource %s %pR (BAR %d) inside resource %s %pR\n", res->name, res, resource, root->name, root);
+else
+ printk("No parent found for resource %s %pR\n", res->name, res);
err = -EINVAL;
if (root != NULL)
err = insert_resource(root, res);
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."


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