[ARM] dma: Reduce to one dma_sync_sg_* implementation

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 8 insertions, 2 deletions

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index c9c1206e358c..0e28cf33f7dd 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -571,7 +571,6 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
 }
 EXPORT_SYMBOL(dma_unmap_sg);
 
-#ifndef CONFIG_DMABOUNCE
 /**
  * dma_sync_sg_for_cpu
  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
@@ -586,6 +585,10 @@ void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
         int i;
 
         for_each_sg(sg, s, nents, i) {
+                if (!dmabounce_sync_for_cpu(dev, sg_dma_address(s), 0,
+                                        sg_dma_len(s), dir))
+                        continue;
+
                 if (!arch_is_coherent())
                         dma_cache_maint(sg_virt(s), s->length, dir);
         }
@@ -606,9 +609,12 @@ void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
         int i;
 
         for_each_sg(sg, s, nents, i) {
+                if (!dmabounce_sync_for_device(dev, sg_dma_address(s), 0,
+                                        sg_dma_len(s), dir))
+                        continue;
+
                 if (!arch_is_coherent())
                         dma_cache_maint(sg_virt(s), s->length, dir);
         }
 }
 EXPORT_SYMBOL(dma_sync_sg_for_device);
-#endif