On Wed,  4 May 2011 20:13:37 +1200
Michael Cree <mcree@orcon.net.nz> 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@orcon.net.nz>
> ---
>  arch/alpha/include/asm/dma-mapping.h |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)

This isn't correct. The drivers should not use DMA_ERROR_CODE directly
(some architecture specific drivers use it though). Fix rademon
drm/kms instead.