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    SubjectRe: [patch 2.5] 2-pass PCI probing, generic part
    On Thu, Jan 09, 2003 at 02:16:20PM -0800, Linus Torvalds wrote:
    > On Fri, 10 Jan 2003, Ivan Kokshaysky wrote:
    > >
    > > Note that in most cases PCI-PCI bridges can be safely excluded from
    > > pci_read_bases() simply because they have neither regular BARs nor
    > > ROM BAR (even though PCI spec allows that).
    >
    > This might be a good approach to take regardless - don't read pci-pci
    > bridge BAR (or host-bridge BAR's for that matter), simply because
    >
    > (a) bridges are more "interesting" than regular devices, and disabling
    > part of them might be a stupid thing.
    > (b) we're generally not really interested in the end result anyway

    PCI-PCI, PCI-ISA bridges - probably, but not host bridges. On x86 they
    often have quite a few BARs, like AGP window, AGP MMIO, power management
    etc., which we cannot ignore.

    OTOH, with that patch we can control probing for any given class of
    devices with a 4-5 lines fixups, per architecture. :-)

    Ivan.
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