parisc: fix sg_page() fallout

arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_map_sg':
arch/parisc/kernel/pci-dma.c:487: error: 'struct scatterlist' has no member named 'page'
arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_unmap_sg':
arch/parisc/kernel/pci-dma.c:508: error: 'struct scatterlist' has no member named 'page'
arch/parisc/kernel/pci-dma.c:508: error: 'struct scatterlist' has no member named 'page'
arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_sync_sg_for_cpu':
arch/parisc/kernel/pci-dma.c:535: error: 'struct scatterlist' has no member named 'page'
arch/parisc/kernel/pci-dma.c:535: error: 'struct scatterlist' has no member named 'page'
arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_sync_sg_for_device':
arch/parisc/kernel/pci-dma.c:545: error: 'struct scatterlist' has no member named 'page'
arch/parisc/kernel/pci-dma.c:545: error: 'struct scatterlist' has no member named 'page'

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

arch/parisc/kernel/pci-dma.c

@@ -25,6 +25,7 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/types.h>
+#include <linux/scatterlist.h>
 
 #include <asm/cacheflush.h>
 #include <asm/dma.h>    /* for DMA_CHUNK_SIZE */

drivers/parisc/ccio-dma.c

@@ -42,6 +42,7 @@
 #include <linux/reboot.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/scatterlist.h>
 
 #include <asm/byteorder.h>
 #include <asm/cache.h>		/* for L1_CACHE_BYTES */

drivers/parisc/sba_iommu.c

@@ -28,6 +28,7 @@
 #include <linux/mm.h>
 #include <linux/string.h>
 #include <linux/pci.h>
+#include <linux/scatterlist.h>
 
 #include <asm/byteorder.h>
 #include <asm/io.h>

include/asm-parisc/scatterlist.h

@@ -18,7 +18,7 @@ struct scatterlist {
 	__u32      iova_length; /* bytes mapped */
 };
 
-#define sg_virt_addr(sg) ((unsigned long)(page_address(sg->page) + sg->offset))
+#define sg_virt_addr(sg) ((unsigned long)sg_virt(sg))
 #define sg_dma_address(sg) ((sg)->iova)
 #define sg_dma_len(sg)     ((sg)->iova_length)