alpha: simplify get_arch_dma_ops

Remove the dma_ops indirection.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NMatt Turner <mattst88@gmail.com>

arch/alpha/include/asm/dma-mapping.h

@@ -2,14 +2,14 @@
 #ifndef _ALPHA_DMA_MAPPING_H
 #define _ALPHA_DMA_MAPPING_H
 
-extern const struct dma_map_ops *dma_ops;
+extern const struct dma_map_ops alpha_pci_ops;
 
 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
 {
 #ifdef CONFIG_ALPHA_JENSEN
 	return &dma_direct_ops;
 #else
-	return dma_ops;
+	return &alpha_pci_ops;
 #endif
 }
 

arch/alpha/kernel/pci_iommu.c

@@ -950,6 +950,4 @@ const struct dma_map_ops alpha_pci_ops = {
 	.mapping_error		= alpha_pci_mapping_error,
 	.dma_supported		= alpha_pci_supported,
 };
-
-const struct dma_map_ops *dma_ops = &alpha_pci_ops;
-EXPORT_SYMBOL(dma_ops);
+EXPORT_SYMBOL(alpha_pci_ops);