Re: [PATCH RFC] x86: Fix 64-bit DMA masks on VIA

[David Miller]

From: Michael Buesch <mb@xxxxxxxxx>
Date: Thu, 24 Apr 2008 16:06:00 +0200

> Why do we need to workaround this in _every_ driver? (Note that _every_
> driver supporting a 64bit mask is affected). Why not fix it in the DMA layer?

Because the driver has to make a conscious choice of what
DMA mask it wants to use.  Datastructures can change based
upon whether 32-bit or 64-bit DMA is available, etc.

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