X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-avr32%2Fdma-mapping.h;h=81e342636ac4cb3d93fc612b9018f5895f57e2c7;hb=4fa435018d740cb83d74c92306aa1f796da91ddd;hp=115813e48fe0c11005181dee7bda548ebad73bb6;hpb=cbe56159a3e60624b5f44cf48b640fa470436e34;p=linux-2.6

diff --git a/include/asm-avr32/dma-mapping.h b/include/asm-avr32/dma-mapping.h
index 115813e48f..81e342636a 100644
--- a/include/asm-avr32/dma-mapping.h
+++ b/include/asm-avr32/dma-mapping.h
@@ -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
@@ -274,6 +278,24 @@ dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
 	dma_cache_sync(dev, bus_to_virt(dma_handle), size, direction);
 }
 
+static inline void
+dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
+			      unsigned long offset, size_t size,
+			      enum dma_data_direction direction)
+{
+	/* just sync everything, that's all the pci API can do */
+	dma_sync_single_for_cpu(dev, dma_handle, offset+size, direction);
+}
+
+static inline void
+dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
+				 unsigned long offset, size_t size,
+				 enum dma_data_direction direction)
+{
+	/* just sync everything, that's all the pci API can do */
+	dma_sync_single_for_device(dev, dma_handle, offset+size, direction);
+}
+
 /**
  * dma_sync_sg_for_cpu
  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
@@ -291,12 +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