diff --git a/include/linux/device.h b/include/linux/device.h
index 161d962..d0e4d99 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -36,6 +36,7 @@
 struct bus_type;
 struct device_node;
 struct iommu_ops;
+struct iommu_group;
 
 struct bus_attribute {
 	struct attribute	attr;
@@ -687,6 +688,7 @@
 	const struct attribute_group **groups;	/* optional groups */
 
 	void	(*release)(struct device *dev);
+	struct iommu_group	*iommu_group;
 };
 
 /* Get the wakeup routines, which depend on struct device */