On Thu, 01 Nov 2007 05:54:06 -0400
Jeff Garzik <[email protected]> wrote:
> Alan Cox wrote:
> > On Thu, 1 Nov 2007 05:07:33 -0400
> > Jeff Garzik <[email protected]> wrote:
> >
> >> This is purely for comment and testing, not for merging (yet?).
> >>
> >> A common recipe in several vendor drivers (either GPL'd, or I have NDA'd
> >> access to use them as a documentation-like reference) for ATAPI was
> >> slightly different from ours. This recipe can be found in
> >> atapi_tf_xfer_size(), and it's slightly different from Alan's.
> >
> > Looks mostly good. Might cause breakage on one or two controllers by
> > setting lbam/lbah to 0 for DMA but we can test that and find out.
>
> DMA always zeroed lbam/lbah thanks to memset(), my patch merely made it
> explicit.
That would be a bug if so - need to try fixing that and see if it sorts
out the remaining recalcitrant ALi chips.
Alan
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