diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 4ed149cbb32a401c26a6d91f062aa25151d994bf..22cb14ec3438e9d74b1fa8f626bb65945c2d4607 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -69,7 +69,9 @@ extern void dma_cache_maint(const void *kaddr, size_t size, int rw);
  */
 static inline int dma_supported(struct device *dev, u64 mask)
 {
-	return dev->dma_mask && *dev->dma_mask != 0;
+	if (mask < ISA_DMA_THRESHOLD)
+		return 0;
+	return 1;
 }
 
 static inline int dma_set_mask(struct device *dev, u64 dma_mask)