diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index df313913e856..d9102af5e26c 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
-// Copyright(c) 2015-17 Intel Corporation.
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/* Copyright(c) 2015-17 Intel Corporation. */
 
 #ifndef __SOUNDWIRE_H
 #define __SOUNDWIRE_H
diff --git a/include/linux/soundwire/sdw_registers.h b/include/linux/soundwire/sdw_registers.h
index df472b1ab410..e75b2e3cf93d 100644
--- a/include/linux/soundwire/sdw_registers.h
+++ b/include/linux/soundwire/sdw_registers.h
@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
-// Copyright(c) 2015-17 Intel Corporation.
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/* Copyright(c) 2015-17 Intel Corporation. */
 
 #ifndef __SDW_REGISTERS_H
 #define __SDW_REGISTERS_H
diff --git a/include/linux/soundwire/sdw_type.h b/include/linux/soundwire/sdw_type.h
index 9fd553e553e9..b7e198a035c9 100644
--- a/include/linux/soundwire/sdw_type.h
+++ b/include/linux/soundwire/sdw_type.h
@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright(c) 2015-17 Intel Corporation.
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2015-17 Intel Corporation. */
 
 #ifndef __SOUNDWIRE_TYPES_H
 #define __SOUNDWIRE_TYPES_H