diff --git a/include/asm-arm/arch-versatile/io.h b/include/asm-arm/arch-versatile/io.h
index dbb7158..9f895bf 100644
--- a/include/asm-arm/arch-versatile/io.h
+++ b/include/asm-arm/arch-versatile/io.h
@@ -20,7 +20,7 @@
 #ifndef __ASM_ARM_ARCH_IO_H
 #define __ASM_ARM_ARCH_IO_H
 
-#define IO_SPACE_LIMIT 0xffff
+#define IO_SPACE_LIMIT 0xffffffff
 
 #define __io(a)			((void __iomem *)(a))
 #define __mem_pci(a)		(a)