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    SubjectRe: [PATCH 2/2] PNP: work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB

    * Bjorn Helgaas <> wrote:

    > On Thu, Jan 5, 2012 at 2:27 PM, Bjorn Helgaas <> wrote:
    > > Some Dell BIOSes have MCFG tables that don't report the entire
    > > MMCONFIG area claimed by the chipset.  If we move PCI devices into
    > > that claimed-but-unreported area, they don't work.
    > >
    > > This quirk reads the AMD MMCONFIG MSRs and adds PNP0C01 resources as
    > > needed to cover the entire area.
    > PNP stuff usually goes through Len's ACPI tree, but this is
    > really x86-specific, and these two patches need to go
    > together, so I think it would make sense to put them both in
    > the x86 tree. Len, do you object?

    I'd really suggest the PCI tree for this - mmconfig is really
    PCI related.


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