sparc: use generic dma_set_mask

Sparc already uses the same code as the generic code for the PCI
implementation but just fails the call sbus.  This moves to the generic
implemenation which eventually return -EIO due to the NULL dma_mask
pointer in the device.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

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

@@ -37,21 +37,6 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 	return dma_ops;
 }
 
-#define HAVE_ARCH_DMA_SET_MASK 1
-
-static inline int dma_set_mask(struct device *dev, u64 mask)
-{
-#ifdef CONFIG_PCI
-	if (dev->bus == &pci_bus_type) {
-		if (!dev->dma_mask || !dma_supported(dev, mask))
-			return -EINVAL;
-		*dev->dma_mask = mask;
-		return 0;
-	}
-#endif
-	return -EINVAL;
-}
-
 #include <asm-generic/dma-mapping-common.h>
 
 #endif