On Wed, 2011-12-07 at 11:19 -0600, Kumar Gala wrote:
> struct dma_map_ops swiotlb_dma_ops = {
> +#ifdef CONFIG_PPC64
> + .alloc_coherent = swiotlb_alloc_coherent,
> + .free_coherent = swiotlb_free_coherent,
> +#else
> .alloc_coherent = dma_direct_alloc_coherent,
> .free_coherent = dma_direct_free_coherent,
> +#endif
> .map_sg = swiotlb_map_sg_attrs,
> .unmap_sg = swiotlb_unmap_sg_attrs,
> .dma_supported = swiotlb_dma_supported,
Do we really need the ifdef ? What happens if we use
swiotlb_alloc_coherent() on ppc32 ? Won't it allocate lowmem, realize
that it doesn't need bouncing and be happy ?
Cheers,
Ben.
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