[PATCH] m68knommu: implement scatter/gather support macros

Implement the scattergather support macros for m68knommu targets.
Patch originally submitted by Leon Woestenberg <[e-mail]>.

Signed-off-by: Greg Ungerer <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

include/asm-m68knommu/scatterlist.h

···
 #ifndef _M68KNOMMU_SCATTERLIST_H
 #define _M68KNOMMU_SCATTERLIST_H
 
+#include <linux/mm.h>
+
 struct scatterlist {
 	struct page	*page;
 	unsigned int	offset;
 	dma_addr_t	dma_address;
 	unsigned int	length;
 };
+
+#define sg_address(sg) (page_address((sg)->page) + (sg)->offset
+#define sg_dma_address(sg)      ((sg)->dma_address)
+#define sg_dma_len(sg)          ((sg)->length)
 
 #define ISA_DMA_THRESHOLD	(0xffffffff)