On Mon, Jun 20, 2011 at 09:50:10AM +0200, Marek Szyprowski wrote:
> This patch removes dma bounce hooks from the common dma mapping
> implementation on ARM architecture and creates a separate set of
> dma_map_ops for dma bounce devices.
Why all this additional indirection for no gain?
> @@ -278,7 +278,7 @@ static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size,
> * We don't need to sync the DMA buffer since
> * it was allocated via the coherent allocators.
> */
> - __dma_single_cpu_to_dev(ptr, size, dir);
> + dma_ops.sync_single_for_device(dev, dma_addr, size, dir);
> }
>
> return dma_addr;
> @@ -317,7 +317,7 @@ static inline void unmap_single(struct device *dev, dma_addr_t dma_addr,
> }
> free_safe_buffer(dev->archdata.dmabounce, buf);
> } else {
> - __dma_single_dev_to_cpu(dma_to_virt(dev, dma_addr), size, dir);
> + dma_ops.sync_single_for_cpu(dev, dma_addr, size, dir);
> }
> }
>
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