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    SubjectRe: [PATCH] ide: Fix ata_id_has_dword_io to return DWORD I/O support properly
    > OTOH the current patch is safe even for 2.6.28 (based on years of experience
    > with the check that we had in IDE subsystem) and will fix some libata drivers
    > (pata_legacy, pata_qdi and pata_winbond) to use dword IO on >= ATA-2 devices.
    > [ In reality this a regression fix for IDE -> libata conversion as it is a
    > huge performance improvement for the above mentioned DMA-less drivers. ]

    The 32bit PIO support is already queued up and went to Jeff a while ago
    so thats all in hand - its btw a big win on some suprising chipset cases
    including Intel ICH chipsets.

    > Jeff, I would like to merge it through IDE tree since the other patch depends
    > on it but if you want to go ahead and push it to Linus earlier feel free to
    > do it (or I can include it into the next IDE fixes pull request if you like).

    Its still broken. You cannot use the version check for versions below 3.
    I remain unconvinced we should be looking at it anywhere except specific
    pure ISA cycle pass through hardware and thus it belongs as a helper for
    those drivers not as ata_has_mumble stuff as its not ATA - eide_* maybe.

    Doubly complicating it is the small detail that ATA1 devices don't
    all respond to IDENTIFY in the first place....


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      Last update: 2008-12-18 23:43    [W:0.020 / U:61.244 seconds]
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