diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index 58b8c6a..9908443 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -8,8 +8,8 @@
 #define MAX_DMA_ADDRESS	0xffffffffUL
 #else
 #define MAX_DMA_ADDRESS	({ \
-	extern unsigned long arm_dma_zone_size; \
-	arm_dma_zone_size ? \
+	extern phys_addr_t arm_dma_zone_size; \
+	arm_dma_zone_size && arm_dma_zone_size < (0x10000000 - PAGE_OFFSET) ? \
 		(PAGE_OFFSET + arm_dma_zone_size) : 0xffffffffUL; })
 #endif