ARM: dma-mapping: split dma_unmap_page() from dma_unmap_single()

We will need to treat dma_unmap_page() differently from dma_unmap_single()

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-By: Jamie Iles <jamie@jamieiles.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index f06d80c22748..a96300bf83fd 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -257,9 +257,11 @@ extern int dma_needs_bounce(struct device*, dma_addr_t, size_t);
  */
 extern dma_addr_t dma_map_single(struct device *, void *, size_t,
                 enum dma_data_direction);
+extern void dma_unmap_single(struct device *, dma_addr_t, size_t,
+                enum dma_data_direction);
 extern dma_addr_t dma_map_page(struct device *, struct page *,
                 unsigned long, size_t, enum dma_data_direction);
-extern void dma_unmap_single(struct device *, dma_addr_t, size_t,
+extern void dma_unmap_page(struct device *, dma_addr_t, size_t,
                 enum dma_data_direction);
 
 /*
@@ -352,7 +354,6 @@ static inline void dma_unmap_single(struct device *dev, dma_addr_t handle,
 {
         /* nothing to do */
 }
-#endif /* CONFIG_DMABOUNCE */
 
 /**
  * dma_unmap_page - unmap a buffer previously mapped through dma_map_page()
@@ -371,8 +372,9 @@ static inline void dma_unmap_single(struct device *dev, dma_addr_t handle,
 static inline void dma_unmap_page(struct device *dev, dma_addr_t handle,
                 size_t size, enum dma_data_direction dir)
 {
-        dma_unmap_single(dev, handle, size, dir);
+        /* nothing to do */
 }
+#endif /* CONFIG_DMABOUNCE */
 
 /**
  * dma_sync_single_range_for_cpu