diff --git a/drivers/vfio/pci/vfio_pci_igd.c b/drivers/vfio/pci/vfio_pci_igd.c
index 56cd551e..362f91ec 100644
--- a/drivers/vfio/pci/vfio_pci_igd.c
+++ b/drivers/vfio/pci/vfio_pci_igd.c
@@ -98,7 +98,8 @@
 			version = cpu_to_le16(0x0201);
 
 		if (igd_opregion_shift_copy(buf, &off,
-					    &version + (pos - OPREGION_VERSION),
+					    (u8 *)&version +
+					    (pos - OPREGION_VERSION),
 					    &pos, &remaining, bytes))
 			return -EFAULT;
 	}
@@ -121,7 +122,7 @@
 					  OPREGION_SIZE : 0);
 
 		if (igd_opregion_shift_copy(buf, &off,
-					    &rvda + (pos - OPREGION_RVDA),
+					    (u8 *)&rvda + (pos - OPREGION_RVDA),
 					    &pos, &remaining, bytes))
 			return -EFAULT;
 	}
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 82fb754..735d1d3 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -232,7 +232,7 @@
 }
 #endif /* CONFIG_VFIO_NOIOMMU */
 
-/**
+/*
  * IOMMU driver registration
  */
 int vfio_register_iommu_driver(const struct vfio_iommu_driver_ops *ops)
@@ -285,7 +285,7 @@
 				     unsigned long action, void *data);
 static void vfio_group_get(struct vfio_group *group);
 
-/**
+/*
  * Container objects - containers are created when /dev/vfio/vfio is
  * opened, but their lifecycle extends until the last user is done, so
  * it's freed via kref.  Must support container/group/device being
@@ -309,7 +309,7 @@
 	kref_put(&container->kref, vfio_container_release);
 }
 
-/**
+/*
  * Group objects - create, release, get, put, search
  */
 static struct vfio_group *
@@ -488,7 +488,7 @@
 	return group;
 }
 
-/**
+/*
  * Device objects - create, release, get, put, search
  */
 /* Device reference always implies a group reference */
@@ -595,7 +595,7 @@
 	return ret;
 }
 
-/**
+/*
  * Async device support
  */
 static int vfio_group_nb_add_dev(struct vfio_group *group, struct device *dev)
@@ -689,7 +689,7 @@
 	return NOTIFY_OK;
 }
 
-/**
+/*
  * VFIO driver API
  */
 void vfio_init_group_dev(struct vfio_device *device, struct device *dev,
@@ -831,7 +831,7 @@
 }
 EXPORT_SYMBOL_GPL(vfio_register_emulated_iommu_dev);
 
-/**
+/*
  * Get a reference to the vfio_device for a device.  Even if the
  * caller thinks they own the device, they could be racing with a
  * release call path, so we can't trust drvdata for the shortcut.
@@ -965,7 +965,7 @@
 }
 EXPORT_SYMBOL_GPL(vfio_unregister_group_dev);
 
-/**
+/*
  * VFIO base fd, /dev/vfio/vfio
  */
 static long vfio_ioctl_check_extension(struct vfio_container *container,
@@ -1183,7 +1183,7 @@
 	.compat_ioctl	= compat_ptr_ioctl,
 };
 
-/**
+/*
  * VFIO Group fd, /dev/vfio/$GROUP
  */
 static void __vfio_group_unset_container(struct vfio_group *group)
@@ -1536,7 +1536,7 @@
 	.release	= vfio_group_fops_release,
 };
 
-/**
+/*
  * VFIO Device fd
  */
 static int vfio_device_fops_release(struct inode *inode, struct file *filep)
@@ -1611,7 +1611,7 @@
 	.mmap		= vfio_device_fops_mmap,
 };
 
-/**
+/*
  * External user API, exported by symbols to be linked dynamically.
  *
  * The protocol includes:
@@ -1659,7 +1659,7 @@
 }
 EXPORT_SYMBOL_GPL(vfio_group_get_external_user);
 
-/**
+/*
  * External user API, exported by symbols to be linked dynamically.
  * The external user passes in a device pointer
  * to verify that:
@@ -1725,7 +1725,7 @@
 }
 EXPORT_SYMBOL_GPL(vfio_external_check_extension);
 
-/**
+/*
  * Sub-module support
  */
 /*
@@ -2272,7 +2272,7 @@
 }
 EXPORT_SYMBOL_GPL(vfio_group_iommu_domain);
 
-/**
+/*
  * Module/class support
  */
 static char *vfio_devnode(struct device *dev, umode_t *mode)