1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 256ee1c9f51..69ce0727edb 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -128,6 +128,14 @@ static inline int dma_supported(struct device *dev, u64 mask)
 
 static inline int dma_set_mask(struct device *dev, u64 dma_mask)
 {
+#ifdef CONFIG_DMABOUNCE
+        if (dev->archdata.dmabounce) {
+                if (dma_mask >= ISA_DMA_THRESHOLD)
+                        return 0;
+                else
+                        return -EIO;
+        }
+#endif
         if (!dev->dma_mask || !dma_supported(dev, dma_mask))
                 return -EIO;