On Wed, May 4, 2011 at 4:13 AM, Michael Cree <mcree@xxxxxxxxxxxx> wrote:
> The radeon drm code now relies on DMA_ERROR_CODE. This defines
> it in alpha dma-mapping header to at least enable me to compile
> radeon drm/kms into kernel.
>
> Signed-off-by: Michael Cree <mcree@xxxxxxxxxxxx>
> ---
> arch/alpha/include/asm/dma-mapping.h | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h
> index 4567aca..644d9c3 100644
> --- a/arch/alpha/include/asm/dma-mapping.h
> +++ b/arch/alpha/include/asm/dma-mapping.h
> @@ -3,6 +3,8 @@
>
> #include <linux/dma-attrs.h>
>
> +#define DMA_ERROR_CODE 0
> +
> extern struct dma_map_ops *dma_ops;
>
> static inline struct dma_map_ops *get_dma_ops(struct device *dev)
> --
> 1.7.4.3
>
>
Other architectures define this differently.
arch/ia64/include/asm/dma-mapping.h:#define DMA_ERROR_CODE 0
arch/microblaze/include/asm/dma-mapping.h:#define DMA_ERROR_CODE
(~(dma_addr_t)0x0)
arch/powerpc/include/asm/dma-mapping.h:#define DMA_ERROR_CODE
(~(dma_addr_t)0x0)
arch/sparc/include/asm/dma-mapping.h:#define DMA_ERROR_CODE
(~(dma_addr_t)0x0)
arch/x86/include/asm/dma-mapping.h:#define DMA_ERROR_CODE 0
Any idea what the reason is?
Matt
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