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    SubjectRe: [Regression] PCI resources allocation problem on HP nx6325
    Date
    Linus Torvalds wrote:
    > I'm not going to do anything about it right now, since clearly we've
    > not changed any actual behavior from before. But if you remind me after
    > 2.6.31 is out, I'll look at perhaps making a better
    > "pci_claim_resource()" that actually iterates over the different parent
    > resources and doesn't just try to find one (and then fail if that
    > particular one doesn't work out).

    Just for your information, this issue also affects my (old) Toshiba
    Satellite A40.

    With pre-2.6.31 kernels I always had the following in dmesg:
    pci 0000:00:1d.0: BAR 4: can't allocate resource
    pci 0000:00:1d.1: BAR 4: can't allocate resource
    [...]
    pnp 00:08: io resource (0x10-0x1f) overlaps 0000:00:1d.0 BAR 4 (0x0-0x1f), disabling
    pnp 00:08: io resource (0x10-0x1f) overlaps 0000:00:1d.1 BAR 4 (0x0-0x1f), disabling

    I was very happy to see that for 2.6.31-rc2 those messages were gone.

    But with .31-rc5 they are back again, with added "address space collision":
    pci 0000:00:1d.0: BAR 4: address space collision on of device [0xcfe0-0xcfff]
    pci 0000:00:1d.0: BAR 4: can't allocate resource
    pci 0000:00:1d.1: BAR 4: address space collision on of device [0xcf80-0xcf9f]
    pci 0000:00:1d.1: BAR 4: can't allocate resource
    [...]
    pnp 00:08: io resource (0x10-0x1f) overlaps 0000:00:1d.0 BAR 4 (0x0-0x1f), disabling
    pnp 00:08: io resource (0x10-0x1f) overlaps 0000:00:1d.1 BAR 4 (0x0-0x1f), disabling

    It's never resulted in things not working, but it would still be nice if
    it got solved. Please let me know if you'd like anything tested.

    Cheers,
    FJP


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