[PATCH] iio: adc: Replace license text w/ SPDX identifier
Scott Branden
scott.branden at broadcom.com
Thu Nov 29 05:54:04 AEDT 2018
On 2018-11-28 9:53 a.m., Matheus Tavares wrote:
> From: Lucas Santos <ilucas.ms at gmail.com>
>
> This patch removes all license boilerplate texts from the .c and .h
I know other people don't follow the patch guidelines,
<https://www.kernel.org/doc/html/latest/process/submitting-patches.html>
but more info on proper commit message format in link.
<https://www.kernel.org/doc/html/latest/process/submitting-patches.html>
(Don't say "this patch" or "this commit" or "I changed") - use
imperative present tense.
<https://www.kernel.org/doc/html/latest/process/submitting-patches.html>
https://www.kernel.org/doc/html/latest/process/submitting-patches.html
> files at drivers/iio/adc/ and, instead, adds the proper SPDX license
> identifiers.
>
> Signed-off-by: Lucas Santos <ilucas.ms at gmail.com>
> Signed-off-by: Matheus Tavares <matheus.bernardino at usp.br>
> ---
> drivers/iio/adc/ad7266.c | 3 +--
> drivers/iio/adc/ad7291.c | 3 +--
> drivers/iio/adc/ad7298.c | 3 +--
> drivers/iio/adc/ad7766.c | 3 +--
> drivers/iio/adc/ad7791.c | 3 +--
> drivers/iio/adc/ad7793.c | 3 +--
> drivers/iio/adc/ad7887.c | 3 +--
> drivers/iio/adc/ad7923.c | 3 +--
> drivers/iio/adc/ad799x.c | 5 +----
> drivers/iio/adc/ad_sigma_delta.c | 3 +--
> drivers/iio/adc/aspeed_adc.c | 6 +-----
> drivers/iio/adc/at91-sama5d2_adc.c | 10 +---------
> drivers/iio/adc/at91_adc.c | 3 +--
> drivers/iio/adc/axp20x_adc.c | 5 +----
> drivers/iio/adc/axp288_adc.c | 13 +------------
> drivers/iio/adc/bcm_iproc_adc.c | 13 +------------
Broadcom change:
Acked-by: Scott Branden <scott.branden at broadcom.com>
> drivers/iio/adc/berlin2-adc.c | 5 +----
> drivers/iio/adc/cc10001_adc.c | 6 +-----
> drivers/iio/adc/cpcap-adc.c | 10 +---------
> drivers/iio/adc/da9150-gpadc.c | 6 +-----
> drivers/iio/adc/dln2-adc.c | 5 +----
> drivers/iio/adc/ep93xx_adc.c | 5 +----
> drivers/iio/adc/exynos_adc.c | 11 +----------
> drivers/iio/adc/fsl-imx25-gcq.c | 5 +----
> drivers/iio/adc/hi8435.c | 6 +-----
> drivers/iio/adc/hx711.c | 6 +-----
> drivers/iio/adc/imx7d_adc.c | 6 +-----
> drivers/iio/adc/ina2xx-adc.c | 7 +------
> drivers/iio/adc/lp8788_adc.c | 5 +----
> drivers/iio/adc/lpc18xx_adc.c | 5 +----
> drivers/iio/adc/lpc32xx_adc.c | 15 +--------------
> drivers/iio/adc/ltc2471.c | 3 +--
> drivers/iio/adc/ltc2485.c | 5 +----
> drivers/iio/adc/ltc2497.c | 3 +--
> drivers/iio/adc/max1027.c | 5 +----
> drivers/iio/adc/max1118.c | 5 +----
> drivers/iio/adc/max1363.c | 5 +----
> drivers/iio/adc/mcp320x.c | 5 +----
> drivers/iio/adc/mcp3422.c | 6 +-----
> drivers/iio/adc/men_z188_adc.c | 5 +----
> drivers/iio/adc/meson_saradc.c | 5 +----
> drivers/iio/adc/mt6577_auxadc.c | 10 +---------
> drivers/iio/adc/mxs-lradc-adc.c | 11 +----------
> drivers/iio/adc/nau7802.c | 3 +--
> drivers/iio/adc/palmas_gpadc.c | 5 +----
> drivers/iio/adc/qcom-pm8xxx-xoadc.c | 1 +
> drivers/iio/adc/qcom-spmi-iadc.c | 10 +---------
> drivers/iio/adc/qcom-spmi-vadc.c | 10 +---------
> drivers/iio/adc/rockchip_saradc.c | 11 +----------
> drivers/iio/adc/spear_adc.c | 3 +--
> drivers/iio/adc/stx104.c | 10 +---------
> drivers/iio/adc/sun4i-gpadc-iio.c | 5 +----
> drivers/iio/adc/ti-adc081c.c | 5 +----
> drivers/iio/adc/ti-adc0832.c | 5 +----
> drivers/iio/adc/ti-adc084s021.c | 5 +----
> drivers/iio/adc/ti-adc108s102.c | 10 +---------
> drivers/iio/adc/ti-adc12138.c | 5 +----
> drivers/iio/adc/ti-ads1015.c | 5 +----
> drivers/iio/adc/ti-ads8688.c | 5 +----
> drivers/iio/adc/ti-tlc4541.c | 5 +----
> drivers/iio/adc/ti_am335x_adc.c | 10 +---------
> drivers/iio/adc/twl4030-madc.c | 16 +---------------
> drivers/iio/adc/twl6030-gpadc.c | 16 +---------------
> drivers/iio/adc/vf610_adc.c | 15 +--------------
> drivers/iio/adc/viperboard_adc.c | 7 +------
> drivers/iio/adc/xilinx-xadc-core.c | 3 +--
> drivers/iio/adc/xilinx-xadc-events.c | 3 +--
> drivers/iio/adc/xilinx-xadc.h | 3 +--
> 68 files changed, 68 insertions(+), 361 deletions(-)
>
> diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
> index 605eb5e7e829..b538824e76cd 100644
> --- a/drivers/iio/adc/ad7266.c
> +++ b/drivers/iio/adc/ad7266.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * AD7266/65 SPI ADC driver
> *
> * Copyright 2012 Analog Devices Inc.
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/device.h>
> diff --git a/drivers/iio/adc/ad7291.c b/drivers/iio/adc/ad7291.c
> index a862b5d8fb4b..7bc9f2e8cd3c 100644
> --- a/drivers/iio/adc/ad7291.c
> +++ b/drivers/iio/adc/ad7291.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * AD7291 8-Channel, I2C, 12-Bit SAR ADC with Temperature Sensor
> *
> * Copyright 2010-2011 Analog Devices Inc.
> - *
> - * Licensed under the GPL-2 or later.
> */
>
> #include <linux/device.h>
> diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
> index e0220825fde0..e7ba5e29d0d6 100644
> --- a/drivers/iio/adc/ad7298.c
> +++ b/drivers/iio/adc/ad7298.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * AD7298 SPI ADC driver
> *
> * Copyright 2011 Analog Devices Inc.
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/device.h>
> diff --git a/drivers/iio/adc/ad7766.c b/drivers/iio/adc/ad7766.c
> index 3ae14fc8c649..ff14959f55de 100644
> --- a/drivers/iio/adc/ad7766.c
> +++ b/drivers/iio/adc/ad7766.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * AD7766/AD7767 SPI ADC driver
> *
> * Copyright 2016 Analog Devices Inc.
> - *
> - * Licensed under the GPL-2 or later.
> */
>
> #include <linux/clk.h>
> diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c
> index a9ff0695ddf7..1b9ab2ef9bae 100644
> --- a/drivers/iio/adc/ad7791.c
> +++ b/drivers/iio/adc/ad7791.c
> @@ -1,10 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * AD7787/AD7788/AD7789/AD7790/AD7791 SPI ADC driver
> *
> * Copyright 2012 Analog Devices Inc.
> * Author: Lars-Peter Clausen <lars at metafoo.de>
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/interrupt.h>
> diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
> index 4ac3ae62f56f..886263a3d2b1 100644
> --- a/drivers/iio/adc/ad7793.c
> +++ b/drivers/iio/adc/ad7793.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * AD7785/AD7792/AD7793/AD7794/AD7795 SPI ADC driver
> *
> * Copyright 2011-2012 Analog Devices Inc.
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/interrupt.h>
> diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c
> index 9d4c2467d362..7c17b53dea2e 100644
> --- a/drivers/iio/adc/ad7887.c
> +++ b/drivers/iio/adc/ad7887.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * AD7887 SPI ADC driver
> *
> * Copyright 2010-2011 Analog Devices Inc.
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/device.h>
> diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
> index d62dbb62be45..cad67ee9bb38 100644
> --- a/drivers/iio/adc/ad7923.c
> +++ b/drivers/iio/adc/ad7923.c
> @@ -1,10 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * AD7904/AD7914/AD7923/AD7924 SPI ADC driver
> *
> * Copyright 2011 Analog Devices Inc (from AD7923 Driver)
> * Copyright 2012 CS Systemes d'Information
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/device.h>
> diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
> index 7a5b5d00a87d..65d60fc173aa 100644
> --- a/drivers/iio/adc/ad799x.c
> +++ b/drivers/iio/adc/ad799x.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * iio/adc/ad799x.c
> * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
> @@ -11,10 +12,6 @@
> * based on linux/drivers/acron/char/pcf8583.c
> * Copyright (C) 2000 Russell King
> *
> - * 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.
> - *
> * ad799x.c
> *
> * Support for ad7991, ad7995, ad7999, ad7992, ad7993, ad7994, ad7997,
> diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
> index ff5f2da2e1b1..cd0c3cda132a 100644
> --- a/drivers/iio/adc/ad_sigma_delta.c
> +++ b/drivers/iio/adc/ad_sigma_delta.c
> @@ -1,10 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Support code for Analog Devices Sigma-Delta ADCs
> *
> * Copyright 2012 Analog Devices Inc.
> * Author: Lars-Peter Clausen <lars at metafoo.de>
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/interrupt.h>
> diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c
> index 9515ca165dfd..5eec9d2a3eb1 100644
> --- a/drivers/iio/adc/aspeed_adc.c
> +++ b/drivers/iio/adc/aspeed_adc.c
> @@ -1,12 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Aspeed AST2400/2500 ADC
> *
> * Copyright (C) 2017 Google, Inc.
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms and conditions of the GNU General Public License,
> - * version 2, as published by the Free Software Foundation.
> - *
> */
>
> #include <linux/clk.h>
> diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
> index d5ea84cf6460..62ceca3fe3bf 100644
> --- a/drivers/iio/adc/at91-sama5d2_adc.c
> +++ b/drivers/iio/adc/at91-sama5d2_adc.c
> @@ -1,17 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Atmel ADC driver for SAMA5D2 devices and compatible.
> *
> * Copyright (C) 2015 Atmel,
> * 2015 Ludovic Desroches <ludovic.desroches at atmel.com>
> - *
> - * This software is licensed under the terms of the GNU General Public
> - * License version 2, as published by the Free Software Foundation, and
> - * may be copied, distributed, and modified under those terms.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> */
>
> #include <linux/bitops.h>
> diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
> index 75d2f73582a3..21b07413a998 100644
> --- a/drivers/iio/adc/at91_adc.c
> +++ b/drivers/iio/adc/at91_adc.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * Driver for the ADC present in the Atmel AT91 evaluation boards.
> *
> * Copyright 2011 Free Electrons
> - *
> - * Licensed under the GPLv2 or later.
> */
>
> #include <linux/bitmap.h>
> diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
> index 5be789269353..42eefe2593ec 100644
> --- a/drivers/iio/adc/axp20x_adc.c
> +++ b/drivers/iio/adc/axp20x_adc.c
> @@ -1,11 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /* ADC driver for AXP20X and AXP22X PMICs
> *
> * Copyright (c) 2016 Free Electrons NextThing Co.
> * Quentin Schulz <quentin.schulz at free-electrons.com>
> - *
> - * 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/completion.h>
> diff --git a/drivers/iio/adc/axp288_adc.c b/drivers/iio/adc/axp288_adc.c
> index 031d568b4972..24c0ec2cfd67 100644
> --- a/drivers/iio/adc/axp288_adc.c
> +++ b/drivers/iio/adc/axp288_adc.c
> @@ -1,19 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * axp288_adc.c - X-Powers AXP288 PMIC ADC Driver
> *
> * Copyright (C) 2014 Intel Corporation
> - *
> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> - *
> - * 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; version 2 of the License.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> - * General Public License for more details.
> - *
> */
>
> #include <linux/module.h>
> diff --git a/drivers/iio/adc/bcm_iproc_adc.c b/drivers/iio/adc/bcm_iproc_adc.c
> index 7af59a4bbd8d..2eadef68bd49 100644
> --- a/drivers/iio/adc/bcm_iproc_adc.c
> +++ b/drivers/iio/adc/bcm_iproc_adc.c
> @@ -1,17 +1,6 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright 2016 Broadcom
> - *
> - * 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 (the "GPL").
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> - * General Public License version 2 (GPLv2) for more details.
> - *
> - * You should have received a copy of the GNU General Public License
> - * version 2 (GPLv2) along with this source code.
> */
>
> #include <linux/module.h>
> diff --git a/drivers/iio/adc/berlin2-adc.c b/drivers/iio/adc/berlin2-adc.c
> index 72d8fa94ab31..3b0ca5f326ed 100644
> --- a/drivers/iio/adc/berlin2-adc.c
> +++ b/drivers/iio/adc/berlin2-adc.c
> @@ -1,13 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Marvell Berlin2 ADC driver
> *
> * Copyright (C) 2015 Marvell Technology Group Ltd.
> *
> * Antoine Tenart <antoine.tenart at free-electrons.com>
> - *
> - * This file is licensed under the terms of the GNU General Public
> - * License version 2. This program is licensed "as is" without any
> - * warranty of any kind, whether express or implied.
> */
>
> #include <linux/iio/iio.h>
> diff --git a/drivers/iio/adc/cc10001_adc.c b/drivers/iio/adc/cc10001_adc.c
> index 707d8b24b072..8b72037e04b2 100644
> --- a/drivers/iio/adc/cc10001_adc.c
> +++ b/drivers/iio/adc/cc10001_adc.c
> @@ -1,10 +1,6 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (c) 2014-2015 Imagination Technologies Ltd.
> - *
> - * 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/clk.h>
> diff --git a/drivers/iio/adc/cpcap-adc.c b/drivers/iio/adc/cpcap-adc.c
> index 9ad60421d360..c1bfa4543125 100644
> --- a/drivers/iio/adc/cpcap-adc.c
> +++ b/drivers/iio/adc/cpcap-adc.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (C) 2017 Tony Lindgren <tony at atomide.com>
> *
> @@ -5,15 +6,6 @@
> * earlier driver found in the Motorola Linux kernel:
> *
> * Copyright (C) 2009-2010 Motorola, Inc.
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> */
>
> #include <linux/delay.h>
> diff --git a/drivers/iio/adc/da9150-gpadc.c b/drivers/iio/adc/da9150-gpadc.c
> index 0a5d9ce79164..620274890645 100644
> --- a/drivers/iio/adc/da9150-gpadc.c
> +++ b/drivers/iio/adc/da9150-gpadc.c
> @@ -1,14 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * DA9150 GPADC Driver
> *
> * Copyright (c) 2014 Dialog Semiconductor
> *
> * Author: Adam Thomson <Adam.Thomson.Opensource at diasemi.com>
> - *
> - * 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/kernel.h>
> diff --git a/drivers/iio/adc/dln2-adc.c b/drivers/iio/adc/dln2-adc.c
> index c64c6675cae6..03f0f8fc6350 100644
> --- a/drivers/iio/adc/dln2-adc.c
> +++ b/drivers/iio/adc/dln2-adc.c
> @@ -1,11 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Driver for the Diolan DLN-2 USB-ADC adapter
> *
> * Copyright (c) 2017 Jack Andersen
> - *
> - * 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, version 2.
> */
>
> #include <linux/kernel.h>
> diff --git a/drivers/iio/adc/ep93xx_adc.c b/drivers/iio/adc/ep93xx_adc.c
> index 5036c392cb20..8f614c84b643 100644
> --- a/drivers/iio/adc/ep93xx_adc.c
> +++ b/drivers/iio/adc/ep93xx_adc.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Driver for ADC module on the Cirrus Logic EP93xx series of SoCs
> *
> * Copyright (C) 2015 Alexander Sverdlin
> *
> - * 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.
> - *
> * The driver uses polling to get the conversion status. According to EP93xx
> * datasheets, reading ADCResult register starts the conversion, but user is also
> * responsible for ensuring that delay between adjacent conversion triggers is
> diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
> index f10443f92e4c..9f9c186e2135 100644
> --- a/drivers/iio/adc/exynos_adc.c
> +++ b/drivers/iio/adc/exynos_adc.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * exynos_adc.c - Support for ADC in EXYNOS SoCs
> *
> @@ -5,16 +6,6 @@
> *
> * Copyright (C) 2013 Naveen Krishna Chatradhi <ch.naveen at samsung.com>
> *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> - *
> * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
> diff --git a/drivers/iio/adc/fsl-imx25-gcq.c b/drivers/iio/adc/fsl-imx25-gcq.c
> index 929c617db364..e03a434b3cd5 100644
> --- a/drivers/iio/adc/fsl-imx25-gcq.c
> +++ b/drivers/iio/adc/fsl-imx25-gcq.c
> @@ -1,10 +1,7 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (C) 2014-2015 Pengutronix, Markus Pargmann <mpa at pengutronix.de>
> *
> - * 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.
> - *
> * This is the driver for the imx25 GCQ (Generic Conversion Queue)
> * connected to the imx25 ADC.
> */
> diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
> index 6f6c9a348158..0b6bf71af685 100644
> --- a/drivers/iio/adc/hi8435.c
> +++ b/drivers/iio/adc/hi8435.c
> @@ -1,13 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * Holt Integrated Circuits HI-8435 threshold detector driver
> *
> * Copyright (C) 2015 Zodiac Inflight Innovations
> * Copyright (C) 2015 Cogent Embedded, Inc.
> - *
> - * 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/delay.h>
> diff --git a/drivers/iio/adc/hx711.c b/drivers/iio/adc/hx711.c
> index 36b59d8957fb..894d49843854 100644
> --- a/drivers/iio/adc/hx711.c
> +++ b/drivers/iio/adc/hx711.c
> @@ -1,13 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * HX711: analog to digital converter for weight sensor module
> *
> * Copyright (c) 2016 Andreas Klinger <ak at it-klinger.de>
> *
> - * 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.
> - *
> * This program is distributed in the hope that it will be useful,
> * but WITHOUT ANY WARRANTY; without even the implied warranty of
> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> diff --git a/drivers/iio/adc/imx7d_adc.c b/drivers/iio/adc/imx7d_adc.c
> index ad6764fb2a23..2f54ea1e4292 100644
> --- a/drivers/iio/adc/imx7d_adc.c
> +++ b/drivers/iio/adc/imx7d_adc.c
> @@ -1,12 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * Freescale i.MX7D ADC driver
> *
> * Copyright (C) 2015 Freescale Semiconductor, Inc.
> - *
> - * 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/clk.h>
> diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
> index bdd7cba6f6b0..9bbcca9df401 100644
> --- a/drivers/iio/adc/ina2xx-adc.c
> +++ b/drivers/iio/adc/ina2xx-adc.c
> @@ -1,20 +1,15 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * INA2XX Current and Power Monitors
> *
> * Copyright 2015 Baylibre SAS.
> *
> - * 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.
> - *
> * Based on linux/drivers/iio/adc/ad7291.c
> * Copyright 2010-2011 Analog Devices Inc.
> *
> * Based on linux/drivers/hwmon/ina2xx.c
> * Copyright 2012 Lothar Felten <l-felten at ti.com>
> *
> - * Licensed under the GPL-2 or later.
> - *
> * IIO driver for INA219-220-226-230-231
> *
> * Configurable 7-bit I2C slave address from 0x40 to 0x4F
> diff --git a/drivers/iio/adc/lp8788_adc.c b/drivers/iio/adc/lp8788_adc.c
> index 3bc4df916420..09dd55bff7bc 100644
> --- a/drivers/iio/adc/lp8788_adc.c
> +++ b/drivers/iio/adc/lp8788_adc.c
> @@ -1,13 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * TI LP8788 MFD - ADC driver
> *
> * Copyright 2012 Texas Instruments
> *
> * Author: Milo(Woogyom) Kim <milo.kim at ti.com>
> - *
> - * 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/delay.h>
> diff --git a/drivers/iio/adc/lpc18xx_adc.c b/drivers/iio/adc/lpc18xx_adc.c
> index 041dc4a3f66c..00d39234143d 100644
> --- a/drivers/iio/adc/lpc18xx_adc.c
> +++ b/drivers/iio/adc/lpc18xx_adc.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * IIO ADC driver for NXP LPC18xx ADC
> *
> * Copyright (C) 2016 Joachim Eastwood <manabian at gmail.com>
> *
> - * 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.
> - *
> * UNSUPPORTED hardware features:
> * - Hardware triggers
> * - Burst mode
> diff --git a/drivers/iio/adc/lpc32xx_adc.c b/drivers/iio/adc/lpc32xx_adc.c
> index 20b36690fa4f..e361c1532a75 100644
> --- a/drivers/iio/adc/lpc32xx_adc.c
> +++ b/drivers/iio/adc/lpc32xx_adc.c
> @@ -1,23 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * lpc32xx_adc.c - Support for ADC in LPC32XX
> *
> * 3-channel, 10-bit ADC
> *
> * Copyright (C) 2011, 2012 Roland Stigge <stigge at antcom.de>
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> - *
> - * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
> */
>
> #include <linux/module.h>
> diff --git a/drivers/iio/adc/ltc2471.c b/drivers/iio/adc/ltc2471.c
> index b88102b751cf..9d5326377676 100644
> --- a/drivers/iio/adc/ltc2471.c
> +++ b/drivers/iio/adc/ltc2471.c
> @@ -1,11 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Driver for Linear Technology LTC2471 and LTC2473 voltage monitors
> * The LTC2473 is identical to the 2471, but reports a differential signal.
> *
> * Copyright (C) 2017 Topic Embedded Products
> * Author: Mike Looijmans <mike.looijmans at topic.nl>
> - *
> - * License: GPLv2
> */
>
> #include <linux/err.h>
> diff --git a/drivers/iio/adc/ltc2485.c b/drivers/iio/adc/ltc2485.c
> index b24c14037fd4..c0e9a7ba7af4 100644
> --- a/drivers/iio/adc/ltc2485.c
> +++ b/drivers/iio/adc/ltc2485.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * ltc2485.c - Driver for Linear Technology LTC2485 ADC
> *
> * Copyright (C) 2016 Alison Schofield <amsfield22 at gmail.com>
> *
> - * 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.
> - *
> * Datasheet: http://cds.linear.com/docs/en/datasheet/2485fd.pdf
> */
>
> diff --git a/drivers/iio/adc/ltc2497.c b/drivers/iio/adc/ltc2497.c
> index f1f7cdf66fbd..0fe12c0e3b3c 100644
> --- a/drivers/iio/adc/ltc2497.c
> +++ b/drivers/iio/adc/ltc2497.c
> @@ -1,10 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * ltc2497.c - Driver for Analog Devices/Linear Technology LTC2497 ADC
> *
> * Copyright (C) 2017 Analog Devices Inc.
> *
> - * Licensed under the GPL-2.
> - *
> * Datasheet: http://cds.linear.com/docs/en/datasheet/2497fd.pdf
> */
>
> diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
> index 311c1a89c329..af83207b2804 100644
> --- a/drivers/iio/adc/max1027.c
> +++ b/drivers/iio/adc/max1027.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * iio/adc/max1027.c
> * Copyright (C) 2014 Philippe Reynes
> @@ -6,10 +7,6 @@
> * Copyright 2011 Analog Devices Inc (from AD7923 Driver)
> * Copyright 2012 CS Systemes d'Information
> *
> - * 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.
> - *
> * max1027.c
> *
> * Partial support for max1027 and similar chips.
> diff --git a/drivers/iio/adc/max1118.c b/drivers/iio/adc/max1118.c
> index 49db9e9ae625..027ee7f6f5d0 100644
> --- a/drivers/iio/adc/max1118.c
> +++ b/drivers/iio/adc/max1118.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * MAX1117/MAX1118/MAX1119 8-bit, dual-channel ADCs driver
> *
> * Copyright (c) 2017 Akinobu Mita <akinobu.mita at 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 this archive for more details.
> - *
> * Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX1117-MAX1119.pdf
> *
> * SPI interface connections
> diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
> index a8d35aebee80..6d191ffc4c7e 100644
> --- a/drivers/iio/adc/max1363.c
> +++ b/drivers/iio/adc/max1363.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * iio/adc/max1363.c
> * Copyright (C) 2008-2010 Jonathan Cameron
> @@ -9,10 +10,6 @@
> * Copyright (C) 2000 Russell King
> *
> * Driver for max1363 and similar chips.
> - *
> - * 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/interrupt.h>
> diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c
> index a04856d8afdb..4b873afe8e5a 100644
> --- a/drivers/iio/adc/mcp320x.c
> +++ b/drivers/iio/adc/mcp320x.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (C) 2013 Oskar Andero <oskar.andero at gmail.com>
> * Copyright (C) 2014 Rose Technology
> @@ -34,10 +35,6 @@
> * http://ww1.microchip.com/downloads/en/DeviceDoc/21298c.pdf mcp3204/08
> * http://ww1.microchip.com/downloads/en/DeviceDoc/21700E.pdf mcp3301
> * http://ww1.microchip.com/downloads/en/DeviceDoc/21950D.pdf mcp3550/1/3
> - *
> - * 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/err.h>
> diff --git a/drivers/iio/adc/mcp3422.c b/drivers/iio/adc/mcp3422.c
> index 819f26011500..c8232ba24667 100644
> --- a/drivers/iio/adc/mcp3422.c
> +++ b/drivers/iio/adc/mcp3422.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * mcp3422.c - driver for the Microchip mcp3421/2/3/4/5/6/7/8 chip family
> *
> @@ -10,11 +11,6 @@
> *
> * This driver exports the value of analog input voltage to sysfs, the
> * voltage unit is nV.
> - *
> - * 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/err.h>
> diff --git a/drivers/iio/adc/men_z188_adc.c b/drivers/iio/adc/men_z188_adc.c
> index c80261748d8f..0cb809bf1730 100644
> --- a/drivers/iio/adc/men_z188_adc.c
> +++ b/drivers/iio/adc/men_z188_adc.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * MEN 16z188 Analog to Digial Converter
> *
> * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
> * Author: Johannes Thumshirn <johannes.thumshirn at men.de>
> - *
> - * 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; version 2 of the License.
> */
>
> #include <linux/kernel.h>
> diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
> index 729becb2d3d9..f5299c9bdbde 100644
> --- a/drivers/iio/adc/meson_saradc.c
> +++ b/drivers/iio/adc/meson_saradc.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Amlogic Meson Successive Approximation Register (SAR) A/D Converter
> *
> * Copyright (C) 2017 Martin Blumenstingl <martin.blumenstingl at googlemail.com>
> *
> - * 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, see <http://www.gnu.org/licenses/>.
> */
> diff --git a/drivers/iio/adc/mt6577_auxadc.c b/drivers/iio/adc/mt6577_auxadc.c
> index 95d76abb64ec..cba0e47c6013 100644
> --- a/drivers/iio/adc/mt6577_auxadc.c
> +++ b/drivers/iio/adc/mt6577_auxadc.c
> @@ -1,15 +1,7 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (c) 2016 MediaTek Inc.
> * Author: Zhiyong Tao <zhiyong.tao at mediatek.com>
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> */
>
> #include <linux/clk.h>
> diff --git a/drivers/iio/adc/mxs-lradc-adc.c b/drivers/iio/adc/mxs-lradc-adc.c
> index c627513d9f0f..80983334e5c2 100644
> --- a/drivers/iio/adc/mxs-lradc-adc.c
> +++ b/drivers/iio/adc/mxs-lradc-adc.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * Freescale MXS LRADC ADC driver
> *
> @@ -7,16 +8,6 @@
> * Authors:
> * Marek Vasut <marex at denx.de>
> * Ksenija Stanojevic <ksenija.stanojevic at gmail.com>
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> */
>
> #include <linux/completion.h>
> diff --git a/drivers/iio/adc/nau7802.c b/drivers/iio/adc/nau7802.c
> index 8997e74a8847..4e53a63e5fb9 100644
> --- a/drivers/iio/adc/nau7802.c
> +++ b/drivers/iio/adc/nau7802.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * Driver for the Nuvoton NAU7802 ADC
> *
> * Copyright 2013 Free Electrons
> - *
> - * Licensed under the GPLv2 or later.
> */
>
> #include <linux/delay.h>
> diff --git a/drivers/iio/adc/palmas_gpadc.c b/drivers/iio/adc/palmas_gpadc.c
> index 69b9affeef1e..45d1bf1253d7 100644
> --- a/drivers/iio/adc/palmas_gpadc.c
> +++ b/drivers/iio/adc/palmas_gpadc.c
> @@ -1,13 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * palmas-adc.c -- TI PALMAS GPADC.
> *
> * Copyright (c) 2013, NVIDIA Corporation. All rights reserved.
> *
> * Author: Pradeep Goudagunta <pgoudagunta at nvidia.com>
> - *
> - * 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 version 2.
> */
>
> #include <linux/module.h>
> diff --git a/drivers/iio/adc/qcom-pm8xxx-xoadc.c b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
> index c30c002f1fef..648136ed1f85 100644
> --- a/drivers/iio/adc/qcom-pm8xxx-xoadc.c
> +++ b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Qualcomm PM8xxx PMIC XOADC driver
> *
> diff --git a/drivers/iio/adc/qcom-spmi-iadc.c b/drivers/iio/adc/qcom-spmi-iadc.c
> index 3f062cd61aba..a8402a47c8e4 100644
> --- a/drivers/iio/adc/qcom-spmi-iadc.c
> +++ b/drivers/iio/adc/qcom-spmi-iadc.c
> @@ -1,14 +1,6 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
> - *
> - * This program is free software; you can redistribute it and/or modify
> - * it under the terms of the GNU General Public License version 2 and
> - * only version 2 as published by the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> */
>
> #include <linux/bitops.h>
> diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
> index 3680e0d47412..f3e8fdee39d8 100644
> --- a/drivers/iio/adc/qcom-spmi-vadc.c
> +++ b/drivers/iio/adc/qcom-spmi-vadc.c
> @@ -1,14 +1,6 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
> - *
> - * This program is free software; you can redistribute it and/or modify
> - * it under the terms of the GNU General Public License version 2 and
> - * only version 2 as published by the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> */
>
> #include <linux/bitops.h>
> diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
> index 1f98566d5b3c..234c6df348ce 100644
> --- a/drivers/iio/adc/rockchip_saradc.c
> +++ b/drivers/iio/adc/rockchip_saradc.c
> @@ -1,16 +1,7 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * Rockchip Successive Approximation Register (SAR) A/D Converter
> * Copyright (C) 2014 ROCKCHIP, Inc.
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> */
>
> #include <linux/module.h>
> diff --git a/drivers/iio/adc/spear_adc.c b/drivers/iio/adc/spear_adc.c
> index b1da2c46107c..009019a39bba 100644
> --- a/drivers/iio/adc/spear_adc.c
> +++ b/drivers/iio/adc/spear_adc.c
> @@ -1,9 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * ST SPEAr ADC driver
> *
> * Copyright 2012 Stefan Roese <sr at denx.de>
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/module.h>
> diff --git a/drivers/iio/adc/stx104.c b/drivers/iio/adc/stx104.c
> index 0662ca199eb0..f9d0aaae836f 100644
> --- a/drivers/iio/adc/stx104.c
> +++ b/drivers/iio/adc/stx104.c
> @@ -1,15 +1,7 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * IIO driver for the Apex Embedded Systems STX104
> * Copyright (C) 2016 William Breathitt Gray
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> - * General Public License for more details.
> */
> #include <linux/bitops.h>
> #include <linux/device.h>
> diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
> index 04d7147e0110..f13c6248a662 100644
> --- a/drivers/iio/adc/sun4i-gpadc-iio.c
> +++ b/drivers/iio/adc/sun4i-gpadc-iio.c
> @@ -1,11 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /* ADC driver for sunxi platforms' (A10, A13 and A31) GPADC
> *
> * Copyright (c) 2016 Quentin Schulz <quentin.schulz at free-electrons.com>
> *
> - * 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.
> - *
> * The Allwinner SoCs all have an ADC that can also act as a touchscreen
> * controller and a thermal sensor.
> * The thermal sensor works only when the ADC acts as a touchscreen controller
> diff --git a/drivers/iio/adc/ti-adc081c.c b/drivers/iio/adc/ti-adc081c.c
> index 405e3779c0c5..92c7584298f6 100644
> --- a/drivers/iio/adc/ti-adc081c.c
> +++ b/drivers/iio/adc/ti-adc081c.c
> @@ -1,13 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * TI ADC081C/ADC101C/ADC121C 8/10/12-bit ADC driver
> *
> * Copyright (C) 2012 Avionic Design GmbH
> * Copyright (C) 2016 Intel
> *
> - * 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.
> - *
> * Datasheets:
> * http://www.ti.com/lit/ds/symlink/adc081c021.pdf
> * http://www.ti.com/lit/ds/symlink/adc101c021.pdf
> diff --git a/drivers/iio/adc/ti-adc0832.c b/drivers/iio/adc/ti-adc0832.c
> index 188dae705bf7..482a00dc9273 100644
> --- a/drivers/iio/adc/ti-adc0832.c
> +++ b/drivers/iio/adc/ti-adc0832.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * ADC0831/ADC0832/ADC0834/ADC0838 8-bit ADC driver
> *
> * Copyright (c) 2016 Akinobu Mita <akinobu.mita at 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 this archive for more details.
> - *
> * Datasheet: http://www.ti.com/lit/ds/symlink/adc0832-n.pdf
> */
>
> diff --git a/drivers/iio/adc/ti-adc084s021.c b/drivers/iio/adc/ti-adc084s021.c
> index 25504640e126..914d097c8758 100644
> --- a/drivers/iio/adc/ti-adc084s021.c
> +++ b/drivers/iio/adc/ti-adc084s021.c
> @@ -1,13 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
> /**
> * Copyright (C) 2017 Axis Communications AB
> *
> * Driver for Texas Instruments' ADC084S021 ADC chip.
> * Datasheets can be found here:
> * http://www.ti.com/lit/ds/symlink/adc084s021.pdf
> - *
> - * 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/err.h>
> diff --git a/drivers/iio/adc/ti-adc108s102.c b/drivers/iio/adc/ti-adc108s102.c
> index 841203edaac5..a1c16199e7cc 100644
> --- a/drivers/iio/adc/ti-adc108s102.c
> +++ b/drivers/iio/adc/ti-adc108s102.c
> @@ -1,18 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * TI ADC108S102 SPI ADC driver
> *
> * Copyright (c) 2013-2015 Intel Corporation.
> * Copyright (c) 2017 Siemens AG
> *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms and conditions of the GNU General Public License,
> - * version 2, as published by the Free Software Foundation.
> - *
> - * This program is distributed in the hope it will be useful, but WITHOUT
> - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
> - * more details.
> - *
> * This IIO device driver is designed to work with the following
> * analog to digital converters from Texas Instruments:
> * ADC108S102
> diff --git a/drivers/iio/adc/ti-adc12138.c b/drivers/iio/adc/ti-adc12138.c
> index 703d68ae96b7..9445b79ad7b8 100644
> --- a/drivers/iio/adc/ti-adc12138.c
> +++ b/drivers/iio/adc/ti-adc12138.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * ADC12130/ADC12132/ADC12138 12-bit plus sign ADC driver
> *
> * Copyright (c) 2016 Akinobu Mita <akinobu.mita at 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 this archive for more details.
> - *
> * Datasheet: http://www.ti.com/lit/ds/symlink/adc12138.pdf
> */
>
> diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
> index 6a114dcb4a3a..cddb41a3919c 100644
> --- a/drivers/iio/adc/ti-ads1015.c
> +++ b/drivers/iio/adc/ti-ads1015.c
> @@ -1,12 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * ADS1015 - Texas Instruments Analog-to-Digital Converter
> *
> * Copyright (c) 2016, Intel Corporation.
> *
> - * 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 this archive for more details.
> - *
> * IIO driver for ADS1015 ADC 7-bit I2C slave address:
> * * 0x48 - ADDR connected to Ground
> * * 0x49 - ADDR connected to Vdd
> diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c
> index 184d686ebd99..83d99a79f79e 100644
> --- a/drivers/iio/adc/ti-ads8688.c
> +++ b/drivers/iio/adc/ti-ads8688.c
> @@ -1,9 +1,6 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Copyright (C) 2015 Prevas A/S
> - *
> - * 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/device.h>
> diff --git a/drivers/iio/adc/ti-tlc4541.c b/drivers/iio/adc/ti-tlc4541.c
> index 2290024c89fc..945d547302c6 100644
> --- a/drivers/iio/adc/ti-tlc4541.c
> +++ b/drivers/iio/adc/ti-tlc4541.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * TI tlc4541 ADC Driver
> *
> @@ -7,10 +8,6 @@
> * http://www.ti.com/lit/gpn/tlc3541
> * http://www.ti.com/lit/gpn/tlc4541
> *
> - * 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.
> - *
> * The tlc4541 requires 24 clock cycles to start a transfer.
> * Conversion then takes 2.94us to complete before data is ready
> * Data is returned MSB first.
> diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
> index cafb1dcadc48..aac5a1959b78 100644
> --- a/drivers/iio/adc/ti_am335x_adc.c
> +++ b/drivers/iio/adc/ti_am335x_adc.c
> @@ -1,16 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * TI ADC MFD driver
> *
> * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
> - *
> - * 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 version 2.
> - *
> - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> - * kind, whether express or implied; without even the implied warranty
> - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> */
>
> #include <linux/kernel.h>
> diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
> index 8c019bb6625f..d3ea08f8d33d 100644
> --- a/drivers/iio/adc/twl4030-madc.c
> +++ b/drivers/iio/adc/twl4030-madc.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> *
> * TWL4030 MADC module driver-This driver monitors the real time
> @@ -12,21 +13,6 @@
> * Mikko Ylinen <mikko.k.ylinen at nokia.com>
> *
> * Amit Kucheria <amit.kucheria at canonical.com>
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> - * General Public License for more details.
> - *
> - * 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., 51 Franklin St, Fifth Floor, Boston, MA
> - * 02110-1301 USA
> - *
> */
>
> #include <linux/device.h>
> diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c
> index e470510e76ea..201027839c1e 100644
> --- a/drivers/iio/adc/twl6030-gpadc.c
> +++ b/drivers/iio/adc/twl6030-gpadc.c
> @@ -1,3 +1,4 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * TWL6030 GPADC module driver
> *
> @@ -12,21 +13,6 @@
> * Based on twl4030-madc.c
> * Copyright (C) 2008 Nokia Corporation
> * Mikko Ylinen <mikko.k.ylinen at nokia.com>
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful, but
> - * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> - * General Public License for more details.
> - *
> - * 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., 51 Franklin St, Fifth Floor, Boston, MA
> - * 02110-1301 USA
> - *
> */
> #include <linux/interrupt.h>
> #include <linux/kernel.h>
> diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
> index bbcb7a4d7edf..a9d13b8b9a68 100644
> --- a/drivers/iio/adc/vf610_adc.c
> +++ b/drivers/iio/adc/vf610_adc.c
> @@ -1,21 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * Freescale Vybrid vf610 ADC driver
> *
> * Copyright 2013 Freescale Semiconductor, Inc.
> - *
> - * 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.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> - *
> - * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
> */
>
> #include <linux/module.h>
> diff --git a/drivers/iio/adc/viperboard_adc.c b/drivers/iio/adc/viperboard_adc.c
> index 53eb5a4136fe..5b64a5ea488f 100644
> --- a/drivers/iio/adc/viperboard_adc.c
> +++ b/drivers/iio/adc/viperboard_adc.c
> @@ -1,15 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0+
> /*
> * Nano River Technologies viperboard IIO ADC driver
> *
> * (C) 2012 by Lemonage GmbH
> * Author: Lars Poeschel <poeschel at lemonage.de>
> * All rights reserved.
> - *
> - * 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/kernel.h>
> diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
> index 3f6be5ac049a..b7b5adf6c9fc 100644
> --- a/drivers/iio/adc/xilinx-xadc-core.c
> +++ b/drivers/iio/adc/xilinx-xadc-core.c
> @@ -1,11 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Xilinx XADC driver
> *
> * Copyright 2013-2014 Analog Devices Inc.
> * Author: Lars-Peter Clauen <lars at metafoo.de>
> *
> - * Licensed under the GPL-2.
> - *
> * Documentation for the parts can be found at:
> * - XADC hardmacro: Xilinx UG480
> * - ZYNQ XADC interface: Xilinx UG585
> diff --git a/drivers/iio/adc/xilinx-xadc-events.c b/drivers/iio/adc/xilinx-xadc-events.c
> index dc0670308253..0c81ad4f0a05 100644
> --- a/drivers/iio/adc/xilinx-xadc-events.c
> +++ b/drivers/iio/adc/xilinx-xadc-events.c
> @@ -1,10 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0
> /*
> * Xilinx XADC driver
> *
> * Copyright 2013 Analog Devices Inc.
> * Author: Lars-Peter Clauen <lars at metafoo.de>
> - *
> - * Licensed under the GPL-2.
> */
>
> #include <linux/iio/events.h>
> diff --git a/drivers/iio/adc/xilinx-xadc.h b/drivers/iio/adc/xilinx-xadc.h
> index 8c0009585c16..5b9042e7441d 100644
> --- a/drivers/iio/adc/xilinx-xadc.h
> +++ b/drivers/iio/adc/xilinx-xadc.h
> @@ -1,10 +1,9 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> /*
> * Xilinx XADC driver
> *
> * Copyright 2013 Analog Devices Inc.
> * Author: Lars-Peter Clauen <lars at metafoo.de>
> - *
> - * Licensed under the GPL-2.
> */
>
> #ifndef __IIO_XILINX_XADC__
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