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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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