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 14:07:57 +00:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2014-08-25 14:44:00 +00:00
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/*
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* This header provides constants clk index STMicroelectronics
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* STiH407 SoC.
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*/
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#ifndef _DT_BINDINGS_CLK_STIH407
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#define _DT_BINDINGS_CLK_STIH407
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2016-06-07 11:19:00 +00:00
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/* CLOCKGEN A0 */
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#define CLK_IC_LMI0 0
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#define CLK_IC_LMI1 1
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2014-08-25 14:44:00 +00:00
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/* CLOCKGEN C0 */
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2014-09-04 12:59:00 +00:00
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#define CLK_ICN_GPU 0
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#define CLK_FDMA 1
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#define CLK_NAND 2
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#define CLK_HVA 3
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#define CLK_PROC_STFE 4
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#define CLK_PROC_TP 5
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#define CLK_RX_ICN_DMU 6
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#define CLK_RX_ICN_DISP_0 6
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#define CLK_RX_ICN_DISP_1 6
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#define CLK_RX_ICN_HVA 7
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#define CLK_RX_ICN_TS 7
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#define CLK_ICN_CPU 8
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#define CLK_TX_ICN_DMU 9
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#define CLK_TX_ICN_HVA 9
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#define CLK_TX_ICN_TS 9
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#define CLK_ICN_COMPO 9
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#define CLK_MMC_0 10
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#define CLK_MMC_1 11
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#define CLK_JPEGDEC 12
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#define CLK_ICN_REG 13
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#define CLK_TRACE_A9 13
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#define CLK_PTI_STM 13
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2014-08-25 14:44:00 +00:00
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#define CLK_EXT2F_A9 13
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2014-09-04 12:59:00 +00:00
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#define CLK_IC_BDISP_0 14
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#define CLK_IC_BDISP_1 15
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#define CLK_PP_DMU 16
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#define CLK_VID_DMU 17
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#define CLK_DSS_LPC 18
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#define CLK_ST231_AUD_0 19
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#define CLK_ST231_GP_0 19
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#define CLK_ST231_GP_1 20
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#define CLK_ST231_DMU 21
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#define CLK_ICN_LMI 22
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#define CLK_TX_ICN_DISP_0 23
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#define CLK_TX_ICN_DISP_1 23
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#define CLK_ICN_SBC 24
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#define CLK_STFE_FRC2 25
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#define CLK_ETH_PHY 26
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#define CLK_ETH_REF_PHYCLK 27
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#define CLK_FLASH_PROMIP 28
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#define CLK_MAIN_DISP 29
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#define CLK_AUX_DISP 30
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#define CLK_COMPO_DVP 31
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2014-08-25 14:44:00 +00:00
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2014-09-04 12:59:00 +00:00
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/* CLOCKGEN D0 */
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#define CLK_PCM_0 0
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#define CLK_PCM_1 1
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#define CLK_PCM_2 2
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#define CLK_SPDIFF 3
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/* CLOCKGEN D2 */
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#define CLK_PIX_MAIN_DISP 0
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#define CLK_PIX_PIP 1
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#define CLK_PIX_GDP1 2
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#define CLK_PIX_GDP2 3
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#define CLK_PIX_GDP3 4
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#define CLK_PIX_GDP4 5
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#define CLK_PIX_AUX_DISP 6
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#define CLK_DENC 7
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#define CLK_PIX_HDDAC 8
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#define CLK_HDDAC 9
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#define CLK_SDDAC 10
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#define CLK_PIX_DVO 11
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#define CLK_DVO 12
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#define CLK_PIX_HDMI 13
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#define CLK_TMDS_HDMI 14
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#define CLK_REF_HDMIPHY 15
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/* CLOCKGEN D3 */
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#define CLK_STFE_FRC1 0
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#define CLK_TSOUT_0 1
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#define CLK_TSOUT_1 2
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#define CLK_MCHI 3
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#define CLK_VSENS_COMPO 4
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#define CLK_FRC1_REMOTE 5
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#define CLK_LPC_0 6
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#define CLK_LPC_1 7
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2014-08-25 14:44:00 +00:00
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#endif
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