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Re: [BISECTED REGRESSION] b43legacy broken on G4 PowerBook

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On Tue, 2019-06-11 at 09:54 +0200, Christoph Hellwig wrote:
> On Tue, Jun 11, 2019 at 04:59:54PM +1000, Benjamin Herrenschmidt
> wrote:
> > Ah stupid me ... it's dma_set_mask that failed, since it has no
> > idea
> > that the calling driver is limited to lowmem.
> > 
> > That's also why the "wrong" patch worked.
> > 
> > So yes, a ZONE_DMA at 30-bits will work, though it's somewhat
> > overkill.
> 
> Well, according to Larry it doesn't actually work, which is odd.

Oh I assume that's just a glitch in the patch :-)

Cheers,
Ben.





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