hexagon: remove arch-specific dma_supported implementation

This implementation is simply bogus - hexagon only has a simple
direct mapped DMA implementation and thus doesn't care about the
address.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Richard Kuo <rkuo@codeaurora.org>

diff --git a/arch/hexagon/include/asm/dma-mapping.h b/arch/hexagon/include/asm/dma-mapping.h
index 00e3f10113b0dd075854c7985e7f0a2a1fe2f0f0..9c15cb5271a66e230b4bb1e88adbdcb3db8e72db 100644 (file)
--- a/arch/hexagon/include/asm/dma-mapping.h
+++ b/arch/hexagon/include/asm/dma-mapping.h
@@ -37,8 +37,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
        return dma_ops;
 }
 
-#define HAVE_ARCH_DMA_SUPPORTED 1
-extern int dma_supported(struct device *dev, u64 mask);
 extern int dma_is_consistent(struct device *dev, dma_addr_t dma_handle);
 extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
                           enum dma_data_direction direction);

diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c
index 8140b1c5de68f6c4f248daeb70ab9e57a5315ab2..546792d176a4801b7b4f7659ec3953a948a85ba0 100644 (file)
--- a/arch/hexagon/kernel/dma.c
+++ b/arch/hexagon/kernel/dma.c
@@ -35,15 +35,6 @@ static inline void *dma_addr_to_virt(dma_addr_t dma_addr)
        return phys_to_virt((unsigned long) dma_addr);
 }
 
-int dma_supported(struct device *dev, u64 mask)
-{
-       if (mask == DMA_BIT_MASK(32))
-               return 1;
-       else
-               return 0;
-}
-EXPORT_SYMBOL(dma_supported);
-
 static struct gen_pool *coherent_pool;