Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/cgroup_rdma.h b/include/linux/cgroup_rdma.h
index e94290b..80edae0 100644
--- a/include/linux/cgroup_rdma.h
+++ b/include/linux/cgroup_rdma.h
@@ -1,9 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (C) 2016 Parav Pandit <pandit.parav@gmail.com>
- *
- * This file is subject to the terms and conditions of version 2 of the GNU
- * General Public License. See the file COPYING in the main directory of the
- * Linux distribution for more details.
  */
 
 #ifndef _CGROUP_RDMA_H
@@ -39,7 +36,7 @@
  * APIs for RDMA/IB stack to publish when a device wants to
  * participate in resource accounting
  */
-int rdmacg_register_device(struct rdmacg_device *device);
+void rdmacg_register_device(struct rdmacg_device *device);
 void rdmacg_unregister_device(struct rdmacg_device *device);
 
 /* APIs for RDMA/IB stack to charge/uncharge pool specific resources */