ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY 111 include/linux/dma-mapping.h #ifndef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY 143 include/linux/dma-mapping.h #ifdef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY