This clarifies the license of the code. While here also add an include
guard to the header file.
Fixes: 07dbff0ddbd86c ("usb: core: add a wrapper for the USB PHYs on the HCD")
Suggested-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
---
drivers/usb/core/phy.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/usb/core/phy.h b/drivers/usb/core/phy.h
index bbc969383074..8451a7e88d38 100644
--- a/drivers/usb/core/phy.h
+++ b/drivers/usb/core/phy.h
@@ -1,3 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * USB roothub wrapper
+ *
+ * Copyright (C) 2018 Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
+ */
+
+#ifndef __USB_CORE_PHY_H_
+#define __USB_CORE_PHY_H_
+
struct device;
struct usb_phy_roothub;
@@ -13,3 +23,5 @@ int usb_phy_roothub_suspend(struct device *controller_dev,
struct usb_phy_roothub *phy_roothub);
int usb_phy_roothub_resume(struct device *controller_dev,
struct usb_phy_roothub *phy_roothub);
+
+#endif /* __USB_CORE_PHY_H_ */
--
2.17.0
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