Re: [PATCH 16/86] pata_efar: MWDMA0 is unsupported

[Jeff Garzik]

On 11/26/2009 10:15 AM, Alan Cox wrote:
> On Thu, 26 Nov 2009 15:53:58 +0100
> Bartlomiej Zolnierkiewicz<bzolnier@xxxxxxxxx>  wrote:
>
> > On Wednesday 25 November 2009 06:25:52 pm Alan Cox wrote:
> > > On Wed, 25 Nov 2009 18:04:15 +0100
> > > Bartlomiej Zolnierkiewicz<bzolnier@xxxxxxxxx>  wrote:
> > >
> > > > From: Bartlomiej Zolnierkiewicz<bzolnier@xxxxxxxxx>
> > > > Subject: [PATCH] pata_efar: MWDMA0 is unsupported
> > > >
> > > > MWDMA0 timings cannot be met with the PIIX based controller
> > > > programming interface.
> > >
> > > The efar documentation makes no reference to not being capable of MWDMA0,
> > > so where does this come from ? No MWDMA0 is an Intel erratum it appears.
> >
> > No MWDMA0 support is a common issue on all 'PIIX-like' controllers.
> >
> > In case of this chipset while the (preliminary) documentation claims MWDMA0
> > support on the 'FEATURES' page the later 'programming guide' part describes
> > only PIO0-4, SWDMA2, MWDMA1-2 and UDMA0-4 transfer modes as supported.
>
> Cool - I only have the original docs.

ACK Bart's patch, then?

This thread was a bit unclear, and I want to be certain (well, as 
certain as we can be :))

	Jeff



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