Re: [RFC PATCH #upstream-fixes] libata: don't use 32bit PIO for small transfers

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On Wed, 14 Sep 2011 15:44:43 +0800
Ming Lei <tom.leiming@xxxxxxxxx> wrote:

> Hi Tejun and Alan,
> 
> Thanks for your spending time on the bug.
> 
> On Tue, Sep 6, 2011 at 5:49 PM, Alan Cox <alan@xxxxxxxxxxxxxxx> wrote:
> 
> >
> > So NACK.
> >
> > Add a piix_sata_data_xfer32_maybe() function to the ata_piix driver
> > specifically for this chipset.
> 
> Could you accept the quirk patch below to make these controllers
> working at least now?

To me that looks like the right fix. It affects the minimum amount of
hardware. It uses the standard operations in full and it documents
clearly what it is doing.

Alan
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