X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=include%2Fasm-arm%2Fdma-mapping.h;h=55eb4dc3253ddfd1dea70d7900b2be0a1caa9ed9;hb=76a081e5b32fde17f6f6d007e1806744cc848712;hp=d62ade4e4cbb24facf3b95a3774e4ec508ba6001;hpb=7a228aaa879c119c9fb9b9d7e062ac13cb1a9079;p=powerpc.git

diff --git a/include/asm-arm/dma-mapping.h b/include/asm-arm/dma-mapping.h
index d62ade4e4c..55eb4dc325 100644
--- a/include/asm-arm/dma-mapping.h
+++ b/include/asm-arm/dma-mapping.h
@@ -3,7 +3,6 @@
 
 #ifdef __KERNEL__
 
-#include <linux/config.h>
 #include <linux/mm.h> /* need struct page */
 
 #include <asm/scatterlist.h>
@@ -47,7 +46,7 @@ static inline int dma_get_cache_alignment(void)
 
 static inline int dma_is_consistent(dma_addr_t handle)
 {
-	return 0;
+	return !!arch_is_coherent();
 }
 
 /*
@@ -70,7 +69,7 @@ static inline int dma_mapping_error(dma_addr_t dma_addr)
  * device-viewed address.
  */
 extern void *
-dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, int gfp);
+dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp);
 
 /**
  * dma_free_coherent - free memory allocated by dma_alloc_coherent
@@ -117,7 +116,7 @@ int dma_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
  * device-viewed address.
  */
 extern void *
-dma_alloc_writecombine(struct device *dev, size_t size, dma_addr_t *handle, int gfp);
+dma_alloc_writecombine(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp);
 
 #define dma_free_writecombine(dev,size,cpu_addr,handle) \
 	dma_free_coherent(dev,size,cpu_addr,handle)
@@ -145,7 +144,9 @@ static inline dma_addr_t
 dma_map_single(struct device *dev, void *cpu_addr, size_t size,
 	       enum dma_data_direction dir)
 {
-	consistent_sync(cpu_addr, size, dir);
+	if (!arch_is_coherent())
+		consistent_sync(cpu_addr, size, dir);
+
 	return virt_to_dma(dev, (unsigned long)cpu_addr);
 }
 #else
@@ -255,7 +256,9 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 
 		sg->dma_address = page_to_dma(dev, sg->page) + sg->offset;
 		virt = page_address(sg->page) + sg->offset;
-		consistent_sync(virt, sg->length, dir);
+
+		if (!arch_is_coherent())
+			consistent_sync(virt, sg->length, dir);
 	}
 
 	return nents;
@@ -310,14 +313,16 @@ static inline void
 dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, size_t size,
 			enum dma_data_direction dir)
 {
-	consistent_sync((void *)dma_to_virt(dev, handle), size, dir);
+	if (!arch_is_coherent())
+		consistent_sync((void *)dma_to_virt(dev, handle), size, dir);
 }
 
 static inline void
 dma_sync_single_for_device(struct device *dev, dma_addr_t handle, size_t size,
 			   enum dma_data_direction dir)
 {
-	consistent_sync((void *)dma_to_virt(dev, handle), size, dir);
+	if (!arch_is_coherent())
+		consistent_sync((void *)dma_to_virt(dev, handle), size, dir);
 }
 #else
 extern void dma_sync_single_for_cpu(struct device*, dma_addr_t, size_t, enum dma_data_direction);
@@ -347,7 +352,8 @@ dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents,
 
 	for (i = 0; i < nents; i++, sg++) {
 		char *virt = page_address(sg->page) + sg->offset;
-		consistent_sync(virt, sg->length, dir);
+		if (!arch_is_coherent())
+			consistent_sync(virt, sg->length, dir);
 	}
 }
 
@@ -359,7 +365,8 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
 
 	for (i = 0; i < nents; i++, sg++) {
 		char *virt = page_address(sg->page) + sg->offset;
-		consistent_sync(virt, sg->length, dir);
+		if (!arch_is_coherent())
+			consistent_sync(virt, sg->length, dir);
 	}
 }
 #else