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    SubjectRe: ARM: 2.6.3[45] PCI regression (IXP4xx and PXA?)
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    On Tue, 17 Aug 2010 01:29:49 +0200
    Krzysztof Halasa <khc@pm.waw.pl> wrote:

    > Hi,
    >
    > FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> writes:
    >
    > > A long solution would be having two dma_mask for a device and a
    > > bus. We also need something to represent a DMA-capable range instead
    > > of the dma mask.
    > >
    > > --- a/arch/arm/mm/dma-mapping.c
    > > +++ b/arch/arm/mm/dma-mapping.c
    > > @@ -77,6 +77,11 @@ static struct page *__dma_alloc_buffer(struct device *dev, size_t size, gfp_t gf
    > > if (mask < 0xffffffffULL)
    > > gfp |= GFP_DMA;
    > >
    > > +#ifdef CONFIG_DMABOUNCE
    > > + if (dev->archdata.dmabounce)
    > > + gfp |= GFP_DMA;
    > > +#endif
    > > +
    > > page = alloc_pages(gfp, order);
    > > if (!page)
    > > return NULL;
    >
    > This patch fixes the problem on my IXP425.

    Thanks a lot!

    I'll re-send the patch in the proper format. Can you send it to
    mainline for 2.6.36?

    I'll work on the proper solution for this issue for 2.6.37.


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