Re: [PATCH 04 of 14] swiotlb: consistently use address_needs_mapping everywhere

FUJITA Tomonori
2008-12-17T02:52:24Z

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

> On Tue, 16 Dec 2008 12:17:28 -0800
> Jeremy Fitzhardinge <jeremy@goop.org> wrote:
>
> > Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
> > ---
> > 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."