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    SubjectRe: pcibios_scanned needs to be set in ACPI? (was Re: 2.6.25-rc5: Reported regressions from 2.6.24)
    On Wed, 12 Mar 2008, Greg KH wrote:

    > On Wed, Mar 12, 2008 at 04:09:17PM -0700, Linus Torvalds wrote:
    > >
    > >
    > > On Wed, 12 Mar 2008, Greg KH wrote:
    > > >
    > > > I can't get a box here to produce both of those PCI: messages myself,
    > > > and neither can Len, so something is really odd here.
    > Ok, stupid me, this was my fault. I was assuming that pci busses would
    > never be registered multiple times with the pci core. Obviously this
    > isn't true. The previous patch I proposed was only paying attention to
    > the PCI devices, and that logic is just fine (it's already protected
    > when it is attempted to be registered multiple times.)
    > So, the patch below fixes the issue for me, and reboot seems to work as
    > well.
    > Guennadi, can you test this out on your machine?

    Yes, it fixes all _3_ startup warnings and lets the machine reboot and
    power off again. 3 warnings are the 2 reported as a regression from
    2.6.24, and one present also under 2.6.24:

    PCI: Probing PCI hardware
    sysfs: duplicate filename 'bridge' can not be created
    WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
    Pid: 1, comm: swapper Not tainted 2.6.24-hires-nohz #2
    [<c010541a>] show_trace_log_lvl+0x1a/0x30
    [<c0105ed2>] show_trace+0x12/0x20
    [<c010675e>] dump_stack+0x6e/0x80
    [<c01b246d>] sysfs_add_one+0x9d/0xe0
    [<c01b328b>] sysfs_create_link+0x8b/0x130
    [<c01f9f14>] pci_bus_add_devices+0x94/0x120
    [<c03f3920>] pci_legacy_init+0x50/0xf0
    [<c03d95f2>] kernel_init+0x142/0x320
    [<c0104fe3>] kernel_thread_helper+0x7/0x14
    pci 0000:00:01.0: Error creating sysfs bridge symlink, continuing...

    So, well done! I was going to disturb you with that one after 2.6.25, now
    I don't have to any more, unless we want it fixed in 2.6.24-stable.

    > thanks for your patience,

    always at your disposal:-)

    Guennadi Liakhovetski

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