License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 08:07:57 -06:00
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// SPDX-License-Identifier: GPL-2.0
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2015-07-22 06:53:02 -06:00
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#include <dt-bindings/gpio/gpio.h>
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2014-01-18 01:41:30 -07:00
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/ {
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regulators {
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compatible = "simple-bus";
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#address-cells = <1>;
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#size-cells = <0>;
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dummy_reg: regulator@0 {
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compatible = "regulator-fixed";
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reg = <0>;
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regulator-name = "dummy-supply";
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};
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reg_usb_otg_vbus: regulator@1 {
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compatible = "regulator-fixed";
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reg = <1>;
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regulator-name = "usb_otg_vbus";
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regulator-min-microvolt = <5000000>;
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regulator-max-microvolt = <5000000>;
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gpio = <&gpio3 22 0>;
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enable-active-high;
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};
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};
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chosen {
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2014-05-07 07:19:00 -06:00
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stdout-path = &uart1;
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2014-01-18 01:41:30 -07:00
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};
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};
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&ecspi3 {
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cs-gpios = <&gpio4 24 0>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_ecspi3>;
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status = "okay";
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flash: m25p80@0 {
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#address-cells = <1>;
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#size-cells = <1>;
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2015-08-16 00:39:17 -06:00
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compatible = "sst,sst25vf040b", "jedec,spi-nor";
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2014-01-18 01:41:30 -07:00
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spi-max-frequency = <20000000>;
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reg = <0>;
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};
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};
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&fec {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_enet>;
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status = "okay";
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phy-mode = "rgmii";
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};
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&iomuxc {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_hog>;
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imx6qdl-dfi-fs700-m60 {
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pinctrl_hog: hoggrp {
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fsl,pins = <
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MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25 0x80000000
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MX6QDL_PAD_GPIO_18__GPIO7_IO13 0x80000000 /* PMIC irq */
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MX6QDL_PAD_EIM_D26__GPIO3_IO26 0x80000000 /* MAX11801 irq */
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MX6QDL_PAD_NANDF_D5__GPIO2_IO05 0x000030b0 /* Backlight enable */
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>;
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};
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pinctrl_enet: enetgrp {
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fsl,pins = <
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2016-07-08 15:22:54 -06:00
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MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b030
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MX6QDL_PAD_RGMII_RD0__RGMII_RD0 0x1b030
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MX6QDL_PAD_RGMII_RD1__RGMII_RD1 0x1b030
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MX6QDL_PAD_RGMII_RD2__RGMII_RD2 0x1b030
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MX6QDL_PAD_RGMII_RD3__RGMII_RD3 0x1b030
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MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x1b030
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MX6QDL_PAD_RGMII_TXC__RGMII_TXC 0x1b030
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MX6QDL_PAD_RGMII_TD0__RGMII_TD0 0x1b030
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MX6QDL_PAD_RGMII_TD1__RGMII_TD1 0x1b030
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MX6QDL_PAD_RGMII_TD2__RGMII_TD2 0x1b030
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MX6QDL_PAD_RGMII_TD3__RGMII_TD3 0x1b030
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MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL 0x1b030
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2014-01-18 01:41:30 -07:00
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MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK 0x1b0b0
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MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0x1b0b0
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MX6QDL_PAD_ENET_MDC__ENET_MDC 0x1b0b0
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MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0x4001b0a8
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>;
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};
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pinctrl_i2c2: i2c2grp {
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fsl,pins = <
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MX6QDL_PAD_EIM_EB2__I2C2_SCL 0x4001b8b1
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MX6QDL_PAD_EIM_D16__I2C2_SDA 0x4001b8b1
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>;
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};
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pinctrl_uart1: uart1grp {
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fsl,pins = <
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MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA 0x1b0b1
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MX6QDL_PAD_CSI0_DAT11__UART1_RX_DATA 0x1b0b1
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>;
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};
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pinctrl_usbotg: usbotggrp {
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fsl,pins = <
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MX6QDL_PAD_ENET_RX_ER__USB_OTG_ID 0x17059
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>;
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};
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pinctrl_usdhc2: usdhc2grp {
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fsl,pins = <
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MX6QDL_PAD_SD2_CMD__SD2_CMD 0x17059
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MX6QDL_PAD_SD2_CLK__SD2_CLK 0x10059
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MX6QDL_PAD_SD2_DAT0__SD2_DATA0 0x17059
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MX6QDL_PAD_SD2_DAT1__SD2_DATA1 0x17059
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MX6QDL_PAD_SD2_DAT2__SD2_DATA2 0x17059
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MX6QDL_PAD_SD2_DAT3__SD2_DATA3 0x17059
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MX6QDL_PAD_NANDF_D2__GPIO2_IO02 0x80000000 /* card detect */
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>;
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};
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pinctrl_usdhc3: usdhc3grp {
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fsl,pins = <
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MX6QDL_PAD_SD3_CMD__SD3_CMD 0x17059
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MX6QDL_PAD_SD3_CLK__SD3_CLK 0x10059
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MX6QDL_PAD_SD3_DAT0__SD3_DATA0 0x17059
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MX6QDL_PAD_SD3_DAT1__SD3_DATA1 0x17059
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MX6QDL_PAD_SD3_DAT2__SD3_DATA2 0x17059
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MX6QDL_PAD_SD3_DAT3__SD3_DATA3 0x17059
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>;
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};
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pinctrl_usdhc4: usdhc4grp {
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fsl,pins = <
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MX6QDL_PAD_SD4_CMD__SD4_CMD 0x17059
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MX6QDL_PAD_SD4_CLK__SD4_CLK 0x10059
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MX6QDL_PAD_SD4_DAT0__SD4_DATA0 0x17059
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MX6QDL_PAD_SD4_DAT1__SD4_DATA1 0x17059
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MX6QDL_PAD_SD4_DAT2__SD4_DATA2 0x17059
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MX6QDL_PAD_SD4_DAT3__SD4_DATA3 0x17059
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MX6QDL_PAD_SD4_DAT4__SD4_DATA4 0x17059
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MX6QDL_PAD_SD4_DAT5__SD4_DATA5 0x17059
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MX6QDL_PAD_SD4_DAT6__SD4_DATA6 0x17059
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MX6QDL_PAD_SD4_DAT7__SD4_DATA7 0x17059
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>;
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};
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pinctrl_ecspi3: ecspi3grp {
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fsl,pins = <
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MX6QDL_PAD_DISP0_DAT2__ECSPI3_MISO 0x100b1
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MX6QDL_PAD_DISP0_DAT1__ECSPI3_MOSI 0x100b1
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MX6QDL_PAD_DISP0_DAT0__ECSPI3_SCLK 0x100b1
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MX6QDL_PAD_DISP0_DAT3__GPIO4_IO24 0x80000000 /* SPI NOR chipselect */
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>;
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};
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};
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};
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&i2c2 {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_i2c2>;
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status = "okay";
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};
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&uart1 {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_uart1>;
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status = "okay";
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};
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&usbh1 {
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status = "okay";
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};
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&usbotg {
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vbus-supply = <®_usb_otg_vbus>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_usbotg>;
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disable-over-current;
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dr_mode = "host";
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status = "okay";
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};
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&usdhc2 { /* module slot */
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_usdhc2>;
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2015-07-22 06:53:02 -06:00
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cd-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
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2014-01-18 01:41:30 -07:00
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status = "okay";
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};
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&usdhc3 { /* baseboard slot */
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_usdhc3>;
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};
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&usdhc4 { /* eMMC */
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_usdhc4>;
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bus-width = <8>;
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non-removable;
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status = "okay";
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};
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