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    SubjectRE: resending patch: Documentation/pci.txt
    Jeff Garzik [] wrote:
    > > If there is something incorrect in what I wrote, please let
    > me know. I am
    > > not sure that the lines about
    > > check_region()/request_region()/release_region() are
    > correct, there don't
    > > seem to be any PCI drivers doing this. I included it
    > because Jeff Garzik and
    > > Martin Mares both said it was needed.
    > I don't know what the general intent of pci.txt is, only Martin can
    > answer that. Your addition IMHO seems like it belongs in a new
    > 'drivers.txt' not specifically pci.txt, because a lot of the text
    > applies to all architectures.

    I don't know how much may apply to other systems.

    > Martin already added a pointer to IO-mapping.txt in recent kernels.
    > And, small error in your text, there is no base_address[] in 2.3.x
    > kernels.

    Damn it! The name appears to have changed between 2.2 and 2.3.

    In pci.h the struct in 2.2.13 (and I would assume later) had

    unsigned long base_address[6]

    which cooresponded to the various PCI Base Address Registers.

    Looking in the 2.3.24, I see that the name has changed. I assume that the
    equivilent is somewhere buried in struct resource resource[].

    I have no clue as to why this would have changed. It never came up during
    any of the discussion (subject: Specifying properly the PCI driver model on
    all linux ...) where I collected most of this information.

    Why did this change, and what was wrong with the old base_address[] array?
    Since every PCI driver is supposed to get the address from this field, I
    think this is a legitimate question.


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