[PATCH] gpio: Use SPDX header for core library

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

Use the SPDX headers and cut down on boilerplate to indicate the
license in the core gpiolib implementation.

Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
 drivers/gpio/devres.c          | 12 ++----------
 drivers/gpio/gpio-mmio.c       |  6 +-----
 drivers/gpio/gpiolib-acpi.c    |  5 +----
 drivers/gpio/gpiolib-devprop.c |  5 +----
 drivers/gpio/gpiolib-legacy.c  |  1 +
 drivers/gpio/gpiolib-of.c      |  6 +-----
 drivers/gpio/gpiolib-sysfs.c   |  1 +
 drivers/gpio/gpiolib.c         |  1 +
 drivers/gpio/gpiolib.h         |  5 +----
 9 files changed, 10 insertions(+), 32 deletions(-)

diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c
index e82cc763633c..01959369360b 100644
--- a/drivers/gpio/devres.c
+++ b/drivers/gpio/devres.c
@@ -1,14 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
- * drivers/gpio/devres.c - managed gpio resources
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
+ * devres.c - managed gpio resources
  * This file is based on kernel/irq/devres.c
  *
  * Copyright (c) 2011 John Crispin <john@xxxxxxxxxxx>
diff --git a/drivers/gpio/gpio-mmio.c b/drivers/gpio/gpio-mmio.c
index 935292a30c99..50bdc29591c0 100644
--- a/drivers/gpio/gpio-mmio.c
+++ b/drivers/gpio/gpio-mmio.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Generic driver for memory-mapped GPIO controllers.
  *
  * Copyright 2008 MontaVista Software, Inc.
  * Copyright 2008,2010 Anton Vorontsov <cbouatmailru@xxxxxxxxx>
  *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
  * ....``.```~~~~````.`.`.`.`.```````'',,,.........`````......`.......
  * ...``                                                         ```````..
  * ..The simplest form of a GPIO controller that the driver supports is``
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 79271e08eea5..3fd3887d9ba8 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * ACPI helpers for GPIO API
  *
  * Copyright (C) 2012, Intel Corporation
  * Authors: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
  *          Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/errno.h>
diff --git a/drivers/gpio/gpiolib-devprop.c b/drivers/gpio/gpiolib-devprop.c
index f748aa3e77f7..43443b2c32a8 100644
--- a/drivers/gpio/gpiolib-devprop.c
+++ b/drivers/gpio/gpiolib-devprop.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Device property helpers for GPIO chips.
  *
  * Copyright (C) 2016, Intel Corporation
  * Author: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/property.h>
diff --git a/drivers/gpio/gpiolib-legacy.c b/drivers/gpio/gpiolib-legacy.c
index 8b830996fe02..30e2476a6dc4 100644
--- a/drivers/gpio/gpiolib-legacy.c
+++ b/drivers/gpio/gpiolib-legacy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
 
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 9985b748b14d..cb8ceddf05ac 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * OF helpers for the GPIO API
  *
  * Copyright (c) 2007-2008  MontaVista Software, Inc.
  *
  * Author: Anton Vorontsov <avorontsov@xxxxxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/device.h>
diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c
index 3d7c90fe7189..fbf6b1a0a4fa 100644
--- a/drivers/gpio/gpiolib-sysfs.c
+++ b/drivers/gpio/gpiolib-sysfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/idr.h>
 #include <linux/mutex.h>
 #include <linux/device.h>
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 03d15d84bdd8..1ffd3fb88466 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/bitmap.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index f23a0c681494..7b5dcef1605b 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Internal GPIO functions.
  *
  * Copyright (C) 2013, Intel Corporation
  * Author: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #ifndef GPIOLIB_H
-- 
2.17.1