diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index a97dd1ba964ee5086a57972906fcc2a7271f5cb7..73f4482d833a7017cd4b91ea083c12fd1647046a 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * usb hub driver head file
  *
diff --git a/drivers/usb/core/otg_whitelist.h b/drivers/usb/core/otg_whitelist.h
index 2ae90158ded7227b4f60cb37f815200989eb421c..fdd4897401e2786f08a1dbfb9a60b21367e12fe7 100644
--- a/drivers/usb/core/otg_whitelist.h
+++ b/drivers/usb/core/otg_whitelist.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * drivers/usb/core/otg_whitelist.h
  *
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 64ed4023a8c8823fb624cb94d9941324ecd4e460..19e4c550bc733dd9b9dafc03c88b6da6f0404717 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Released under the GPLv2 only.
  */