Re: [PATCH 04 of 14] swiotlb: consistently useaddress_needs_mapping everywhere

[FUJITA Tomonori]

On Wed, 17 Dec 2008 11:48:41 +0900
FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> wrote:

> On Tue, 16 Dec 2008 12:17:28 -0800
> Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
> 
> > Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> > ---
> >  lib/swiotlb.c |   10 +++-------
> >  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> This patch is wrong.
> 
> dma_mask and coherent_dma_mask represent different restrictions.
> 
> You can't use coherent_dma_mask for alloc_coherent.

Oops, "you can't use dma_mask for alloc_coherent."
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