microblaze: remove dma_nommu_dma_supported

Always returning 1 is the same behavior as not supplying a method at all.
Signed-off-by: NChristoph Hellwig <hch@lst.de>

arch/microblaze/kernel/dma.c

@@ -89,11 +89,6 @@ static int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl,
 	return nents;
 }
 
-static int dma_nommu_dma_supported(struct device *dev, u64 mask)
-{
-	return 1;
-}
-
 static inline dma_addr_t dma_nommu_map_page(struct device *dev,
 					     struct page *page,
 					     unsigned long offset,
@@ -209,7 +204,6 @@ const struct dma_map_ops dma_nommu_ops = {
 	.free			= dma_nommu_free_coherent,
 	.mmap			= dma_nommu_mmap_coherent,
 	.map_sg			= dma_nommu_map_sg,
-	.dma_supported		= dma_nommu_dma_supported,
 	.map_page		= dma_nommu_map_page,
 	.unmap_page		= dma_nommu_unmap_page,
 	.sync_single_for_cpu	= dma_nommu_sync_single_for_cpu,

arch/parisc/kernel/pci-dma.c

@@ -75,11 +75,6 @@ void dump_resmap(void)
 static inline void dump_resmap(void) {;}
 #endif
 
-static int pa11_dma_supported( struct device *dev, u64 mask)
-{
-	return 1;
-}
-
 static inline int map_pte_uncached(pte_t * pte,
 		unsigned long vaddr,
 		unsigned long size, unsigned long *paddr_ptr)
@@ -579,7 +574,6 @@ static void pa11_dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 }
 
 const struct dma_map_ops pcxl_dma_ops = {
-	.dma_supported =	pa11_dma_supported,
 	.alloc =		pa11_dma_alloc,
 	.free =			pa11_dma_free,
 	.map_page =		pa11_dma_map_page,
@@ -616,7 +610,6 @@ static void pcx_dma_free(struct device *dev, size_t size, void *vaddr,
 }
 
 const struct dma_map_ops pcx_dma_ops = {
-	.dma_supported =	pa11_dma_supported,
 	.alloc =		pcx_dma_alloc,
 	.free =			pcx_dma_free,
 	.map_page =		pa11_dma_map_page,