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    SubjectRe: Boot-time crash from "PCI/x86: detect host bridge config space size w/o using quirks"
    Brad Spengler wrote:
    > I'm running an SGI 750 (Itanium 1), and have spent all day git-bisecting
    > the patches between 2.6.29 and 2.6.30 (having tried all kernels from
    > 2.6.26 to 2.6.31) and found that your patch:
    > http://patchwork.kernel.org/patch/19486/
    > causes the crash I observed, which I've taken a picture of here:
    > http://yfrog.com/3oimg1457uj
    >
    > Let me know if you need any additional information or need me to test a
    > fix you'll submit to LKML.

    can you check if this debug patch?

    YH

    diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
    index 8105e32..4e6a896 100644
    --- a/drivers/pci/probe.c
    +++ b/drivers/pci/probe.c
    @@ -903,10 +903,6 @@ int pci_cfg_space_size(struct pci_dev *dev)
    u32 status;
    u16 class;

    - class = dev->class >> 8;
    - if (class == PCI_CLASS_BRIDGE_HOST)
    - return pci_cfg_space_size_ext(dev);
    -
    pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
    if (!pos) {
    pos = pci_find_capability(dev, PCI_CAP_ID_PCIX);

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