Subject: Re: AW: PowerPC PCI DMA issues (prefetch/coherency?)

From: Stefan Roese <[email-masked]>
Date: Fri, 11 Sep 2009 07:25:36 +0200

On Friday 11 September 2009 07:17:50 Benjamin Herrenschmidt wrote:
> On Fri, 2009-09-11 at 07:12 +0200, Stefan Roese wrote:
> > It's already there. See commit:
> >
> > 5ce4b59653b2c2053cd9a011918ac1e4747f24cc
> >
> > powerpc/4xx: Workaround for PPC440EPx/GRx PCI_28 Errata
> 
> Ok, that's another way to do it. Will catch nasty drivers who
> try to write directly rather than clear pci_cache_line_size I suppose...

Correct. IIRC, some PATA driver as Pravin already mentioned.
 
Cheers,
Stefan