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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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