diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 54d6d690073c1cb5119671b99df70af3ddfc615d..0a85199191b9377fbdd89ee1d7e69e3b1e0df76d 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -20,6 +20,7 @@
 #define __LINUX_IOMMU_H
 
 #include <linux/errno.h>
+#include <linux/types.h>
 
 #define IOMMU_READ	(1)
 #define IOMMU_WRITE	(2)