diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 42fe43f..7ea20bd 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -627,6 +627,7 @@ struct vmbus_channel_msginfo {
 
 	/* Synchronize the request/response if needed */
 	struct completion  waitevent;
+	struct vmbus_channel *waiting_channel;
 	union {
 		struct vmbus_channel_version_supported version_supported;
 		struct vmbus_channel_open_result open_result;