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 22:07:57 +08:00
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/* SPDX-License-Identifier: GPL-2.0 */
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[ARM] 3369/1: ep93xx: add core cirrus ep93xx support
Patch from Lennert Buytenhek
This patch adds support for the Cirrus ep93xx series of CPUs. The
ep93xx is an ARM920T based CPU with two VICs, PL010 based UARTs,
IrDA, MaverickCrunch floating point coprocessor, between 24 and 64
GPIOs, ethernet, OHCI USB and, depending on the model, pcmcia, raster
engine, graphics accelerator, IDE controller and a bunch of other
stuff.
This patch adds the core ep93xx support code, and support for the
Glomation GESBC-9312-sx and the Technologic Systems TS-72xx SBCs.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 01:10:13 +08:00
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/*
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2008-08-05 23:14:15 +08:00
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* arch/arm/mach-ep93xx/include/mach/irqs.h
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[ARM] 3369/1: ep93xx: add core cirrus ep93xx support
Patch from Lennert Buytenhek
This patch adds support for the Cirrus ep93xx series of CPUs. The
ep93xx is an ARM920T based CPU with two VICs, PL010 based UARTs,
IrDA, MaverickCrunch floating point coprocessor, between 24 and 64
GPIOs, ethernet, OHCI USB and, depending on the model, pcmcia, raster
engine, graphics accelerator, IDE controller and a bunch of other
stuff.
This patch adds the core ep93xx support code, and support for the
Glomation GESBC-9312-sx and the Technologic Systems TS-72xx SBCs.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 01:10:13 +08:00
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*/
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#ifndef __ASM_ARCH_IRQS_H
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#define __ASM_ARCH_IRQS_H
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#define IRQ_EP93XX_COMMRX 2
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#define IRQ_EP93XX_COMMTX 3
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#define IRQ_EP93XX_TIMER1 4
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#define IRQ_EP93XX_TIMER2 5
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#define IRQ_EP93XX_AACINTR 6
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#define IRQ_EP93XX_DMAM2P0 7
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#define IRQ_EP93XX_DMAM2P1 8
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#define IRQ_EP93XX_DMAM2P2 9
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#define IRQ_EP93XX_DMAM2P3 10
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#define IRQ_EP93XX_DMAM2P4 11
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#define IRQ_EP93XX_DMAM2P5 12
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#define IRQ_EP93XX_DMAM2P6 13
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#define IRQ_EP93XX_DMAM2P7 14
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#define IRQ_EP93XX_DMAM2P8 15
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#define IRQ_EP93XX_DMAM2P9 16
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#define IRQ_EP93XX_DMAM2M0 17
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#define IRQ_EP93XX_DMAM2M1 18
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2006-12-22 21:33:18 +08:00
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#define IRQ_EP93XX_GPIO0MUX 19
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#define IRQ_EP93XX_GPIO1MUX 20
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#define IRQ_EP93XX_GPIO2MUX 21
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[ARM] 3369/1: ep93xx: add core cirrus ep93xx support
Patch from Lennert Buytenhek
This patch adds support for the Cirrus ep93xx series of CPUs. The
ep93xx is an ARM920T based CPU with two VICs, PL010 based UARTs,
IrDA, MaverickCrunch floating point coprocessor, between 24 and 64
GPIOs, ethernet, OHCI USB and, depending on the model, pcmcia, raster
engine, graphics accelerator, IDE controller and a bunch of other
stuff.
This patch adds the core ep93xx support code, and support for the
Glomation GESBC-9312-sx and the Technologic Systems TS-72xx SBCs.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 01:10:13 +08:00
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#define IRQ_EP93XX_GPIO3MUX 22
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#define IRQ_EP93XX_UART1RX 23
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#define IRQ_EP93XX_UART1TX 24
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#define IRQ_EP93XX_UART2RX 25
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#define IRQ_EP93XX_UART2TX 26
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#define IRQ_EP93XX_UART3RX 27
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#define IRQ_EP93XX_UART3TX 28
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#define IRQ_EP93XX_KEY 29
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#define IRQ_EP93XX_TOUCH 30
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#define EP93XX_VIC1_VALID_IRQ_MASK 0x7ffffffc
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#define IRQ_EP93XX_EXT0 32
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#define IRQ_EP93XX_EXT1 33
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#define IRQ_EP93XX_EXT2 34
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#define IRQ_EP93XX_64HZ 35
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#define IRQ_EP93XX_WATCHDOG 36
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#define IRQ_EP93XX_RTC 37
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#define IRQ_EP93XX_IRDA 38
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#define IRQ_EP93XX_ETHERNET 39
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#define IRQ_EP93XX_EXT3 40
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#define IRQ_EP93XX_PROG 41
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#define IRQ_EP93XX_1HZ 42
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#define IRQ_EP93XX_VSYNC 43
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#define IRQ_EP93XX_VIDEO_FIFO 44
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#define IRQ_EP93XX_SSP1RX 45
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#define IRQ_EP93XX_SSP1TX 46
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#define IRQ_EP93XX_GPIO4MUX 47
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#define IRQ_EP93XX_GPIO5MUX 48
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#define IRQ_EP93XX_GPIO6MUX 49
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#define IRQ_EP93XX_GPIO7MUX 50
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#define IRQ_EP93XX_TIMER3 51
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#define IRQ_EP93XX_UART1 52
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#define IRQ_EP93XX_SSP 53
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#define IRQ_EP93XX_UART2 54
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#define IRQ_EP93XX_UART3 55
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#define IRQ_EP93XX_USB 56
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#define IRQ_EP93XX_ETHERNET_PME 57
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#define IRQ_EP93XX_DSP 58
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#define IRQ_EP93XX_GPIO_AB 59
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#define IRQ_EP93XX_SAI 60
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#define EP93XX_VIC2_VALID_IRQ_MASK 0x1fffffff
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2007-02-05 07:38:48 +08:00
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#define NR_EP93XX_IRQS (64 + 24)
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[ARM] 3369/1: ep93xx: add core cirrus ep93xx support
Patch from Lennert Buytenhek
This patch adds support for the Cirrus ep93xx series of CPUs. The
ep93xx is an ARM920T based CPU with two VICs, PL010 based UARTs,
IrDA, MaverickCrunch floating point coprocessor, between 24 and 64
GPIOs, ethernet, OHCI USB and, depending on the model, pcmcia, raster
engine, graphics accelerator, IDE controller and a bunch of other
stuff.
This patch adds the core ep93xx support code, and support for the
Glomation GESBC-9312-sx and the Technologic Systems TS-72xx SBCs.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 01:10:13 +08:00
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#define EP93XX_BOARD_IRQ(x) (NR_EP93XX_IRQS + (x))
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#define EP93XX_BOARD_IRQS 32
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#define NR_IRQS (NR_EP93XX_IRQS + EP93XX_BOARD_IRQS)
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#endif
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