diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 2e54e34..c056f05 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1069,6 +1069,8 @@
 					 const char *mod_name);
 void vmbus_driver_unregister(struct hv_driver *hv_driver);
 
+void vmbus_hvsock_device_unregister(struct vmbus_channel *channel);
+
 int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj,
 			resource_size_t min, resource_size_t max,
 			resource_size_t size, resource_size_t align,