Re: [PATCH 1/3] x86: remove the NULL device hack in dma-mapping.h

[Robert Hancock]

FUJITA Tomonori wrote:
> On Wed, 3 Sep 2008 22:01:14 +0200
> Joerg Roedel <joro@xxxxxxxxxx> wrote:
>
> > On Thu, Sep 04, 2008 at 03:04:23AM +0900, FUJITA Tomonori wrote:
> > > +static void *x86_swiotlb_alloc_coherent(struct device *dev, size_t size,
> > > +					dma_addr_t *dma_handle, gfp_t gfp)
> > > +{
> > > +	if (!dev) {
> > > +		dev = &x86_dma_fallback_dev;
> > > +		gfp |= GFP_DMA;
> > > +	}
> > This really should be checked in the generic x86 dma_alloc_coherent
> > function.
>
> I don't think so. Any motherboards with the recent IOMMUs support ISA?

Probably some LPC devices on those boards..
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