Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog

[linux-2.6] / include / asm-avr32 / dma-mapping.h

diff --git a/include/asm-avr32/dma-mapping.h b/include/asm-avr32/dma-mapping.h
index 21bb60bbb9a1889e3eb058f5b4045238b45bf33a..a7131630c057ae3c3b1b00c92ec712a26fa1eaf4 100644 (file)
--- a/include/asm-avr32/dma-mapping.h
+++ b/include/asm-avr32/dma-mapping.h
@@ -217,8 +217,8 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
        for (i = 0; i < nents; i++) {
                char *virt;
 
-               sg[i].dma_address = page_to_bus(sg[i].page) + sg[i].offset;
-               virt = page_address(sg[i].page) + sg[i].offset;
+               sg[i].dma_address = page_to_bus(sg_page(&sg[i])) + sg[i].offset;
+               virt = sg_virt(&sg[i]);
                dma_cache_sync(dev, virt, sg[i].length, direction);
        }
 
@@ -264,7 +264,11 @@ static inline void
 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
                        size_t size, enum dma_data_direction direction)
 {
-       dma_cache_sync(dev, bus_to_virt(dma_handle), size, direction);
+       /*
+        * No need to do anything since the CPU isn't supposed to
+        * touch this memory after we flushed it at mapping- or
+        * sync-for-device time.
+        */
 }
 
 static inline void
@@ -309,12 +313,11 @@ static inline void
 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
                    int nents, enum dma_data_direction direction)
 {
-       int i;
-
-       for (i = 0; i < nents; i++) {
-               dma_cache_sync(dev, page_address(sg[i].page) + sg[i].offset,
-                              sg[i].length, direction);
-       }
+       /*
+        * No need to do anything since the CPU isn't supposed to
+        * touch this memory after we flushed it at mapping- or
+        * sync-for-device time.
+        */
 }
 
 static inline void
@@ -324,8 +327,7 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
        int i;
 
        for (i = 0; i < nents; i++) {
-               dma_cache_sync(dev, page_address(sg[i].page) + sg[i].offset,
-                              sg[i].length, direction);
+               dma_cache_sync(dev, sg_virt(&sg[i]), sg[i].length, direction);
        }
 }