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    SubjectRe: [PATCH] SPARC64: fix iommu sg chaining
    On Wed, Oct 17 2007, David Miller wrote:
    > From: David Miller <davem@davemloft.net>
    > Date: Wed, 17 Oct 2007 01:33:25 -0700 (PDT)
    >
    > > sg_next() gives you a NULL after the last entry, but tests have been
    > > changed to compare against sg_last() which is likely not what we
    > > want for those checks.
    >
    > This of course isn't true, ignore me as I'm still learning how this
    > new stuff works :-)

    Righto, it's invalid to call sg_next() on the last entry! Let me know if
    you need any help with debugging this, unfortunately I cannot test on
    sparc64 myself...

    (I can say that easily, since I know that davem will a) not rest until
    this is fixed, and b) is a really good debugger and will not need my
    help)

    --
    Jens Axboe

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