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    SubjectRe: ata_piix, laptop cdrom, ICH7: EH, limiting speed to PIO
    On 9/17/07, Tejun Heo <htejun@gmail.com> wrote:

    [...]
    > >>>> BTW, this only happens when using libata of course. The
    > >>>> old CONFIG_IDE stuff works fine every time.
    > >>> This maybe one of libata weirdness (I really don't get it why some hardware
    > >>> works perfectly fine with an old IDE and don't work well with libata).
    > >> Hmmm... Is MWDMA2 mode used with ide driver too?
    > >>
    > >
    > > What's the best way to tell whether it does or not? (the log says
    > > "selected mode 0x22", see below)
    >
    > Yes, that's MWDMA2. Hmm... We're seeing many cases where MWDMA doesn't
    > work with libata while it works fine with IDE but have no idea what's
    > going on yet. :-(
    >

    Okay, thanks. Please feel free to contact me if you need any more testing done.

    --
    Sergey
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