Remove various unused flags, and return a reasonable error code.
- clean up dma_declare_coherent_memory calling conventions Christoph Hellwig
- [PATCH 1/2] dma-coherent: remove the DMA_MEMORY_INC... Christoph Hellwig
- Re: [PATCH 1/2] dma-coherent: remove the DMA_ME... Robin Murphy
- [PATCH 2/2] dma-coherent: remove the DMA_MEMORY_MAP... Christoph Hellwig
- Re: [PATCH 2/2] dma-coherent: remove the DMA_ME... Robin Murphy
