DMA_ADDR_INVALID
#define DMA_ADDR_INVALID ((dma_addr_t) 0)
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define DMA_ADDR_INVALID (~(dma_addr_t)0)