On Sat, Feb 10, 2007 at 02:25:53PM -0800, Linus Torvalds wrote:
>
>
> On Sat, 10 Feb 2007, Tejun Heo wrote:
> >
> > I think an arch needs to support ioport_map/unmap and noncoherent dma (just
> > alias to coherent interface on x86/amd64) interface whether PCI is implemented
> > or not. No?
>
> We haven't required ioport implementations in the past, afaik.
We don't even require ioremap(). What the hell could it possibly mean on
e.g. UML? The same goes for DMA. And yes, of course it means that a lot
of drivers are not buildable on it - hardly a surprise, that...
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