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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2005-04-17 06:20:36 +08:00
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#ifndef TRIDENTFB_DEBUG
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#define TRIDENTFB_DEBUG 0
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#endif
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#if TRIDENTFB_DEBUG
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2008-07-24 12:31:05 +08:00
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#define debug(f, a...) printk("%s:" f, __func__ , ## a);
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2005-04-17 06:20:36 +08:00
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#else
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2008-07-24 12:31:05 +08:00
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#define debug(f, a...)
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2005-04-17 06:20:36 +08:00
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#endif
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#define output(f, a...) pr_info("tridentfb: " f, ## a)
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#define Kb (1024)
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#define Mb (Kb*Kb)
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/* PCI IDS of supported cards temporarily here */
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#define CYBER9320 0x9320
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#define CYBER9388 0x9388
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#define CYBER9382 0x9382 /* the real PCI id for this is 9660 */
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#define CYBER9385 0x9385 /* ditto */
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#define CYBER9397 0x9397
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#define CYBER9397DVD 0x939A
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#define CYBER9520 0x9520
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#define CYBER9525DVD 0x9525
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2008-07-24 12:30:58 +08:00
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#define TGUI9440 0x9440
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#define TGUI9660 0x9660
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#define PROVIDIA9685 0x9685
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2005-04-17 06:20:36 +08:00
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#define IMAGE975 0x9750
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#define IMAGE985 0x9850
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#define BLADE3D 0x9880
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#define CYBERBLADEE4 0x9540
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#define CYBERBLADEi7 0x8400
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#define CYBERBLADEi7D 0x8420
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#define CYBERBLADEi1 0x8500
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#define CYBERBLADEi1D 0x8520
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#define CYBERBLADEAi1 0x8600
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#define CYBERBLADEAi1D 0x8620
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#define CYBERBLADEXPAi1 0x8820
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#define CYBERBLADEXPm8 0x9910
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#define CYBERBLADEXPm16 0x9930
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/* these defines are for 'lcd' variable */
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#define LCD_STRETCH 0
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#define LCD_CENTER 1
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#define LCD_BIOS 2
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/* General Registers */
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#define SPR 0x1F /* Software Programming Register (videoram) */
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/* 3C4 */
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#define RevisionID 0x09
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#define OldOrNew 0x0B
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#define ConfPort1 0x0C
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#define ConfPort2 0x0C
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#define NewMode2 0x0D
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#define NewMode1 0x0E
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#define Protection 0x11
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#define MCLKLow 0x16
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#define MCLKHigh 0x17
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#define ClockLow 0x18
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#define ClockHigh 0x19
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#define SSetup 0x20
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#define SKey 0x37
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#define SPKey 0x57
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/* 3x4 */
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#define CRTCModuleTest 0x1E
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#define FIFOControl 0x20
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#define LinearAddReg 0x21
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#define DRAMTiming 0x23
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#define New32 0x23
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#define RAMDACTiming 0x25
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#define CRTHiOrd 0x27
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#define AddColReg 0x29
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#define InterfaceSel 0x2A
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#define HorizOverflow 0x2B
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#define GETest 0x2D
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#define Performance 0x2F
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#define GraphEngReg 0x36
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#define I2C 0x37
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#define PixelBusReg 0x38
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#define PCIReg 0x39
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#define DRAMControl 0x3A
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#define MiscContReg 0x3C
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#define CursorXLow 0x40
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#define CursorXHigh 0x41
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#define CursorYLow 0x42
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#define CursorYHigh 0x43
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#define CursorLocLow 0x44
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#define CursorLocHigh 0x45
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#define CursorXOffset 0x46
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#define CursorYOffset 0x47
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#define CursorFG1 0x48
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#define CursorFG2 0x49
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#define CursorFG3 0x4A
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#define CursorFG4 0x4B
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#define CursorBG1 0x4C
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#define CursorBG2 0x4D
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#define CursorBG3 0x4E
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#define CursorBG4 0x4F
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#define CursorControl 0x50
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#define PCIRetry 0x55
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#define PreEndControl 0x56
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#define PreEndFetch 0x57
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#define PCIMaster 0x60
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#define Enhancement0 0x62
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#define NewEDO 0x64
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#define TVinterface 0xC0
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#define TVMode 0xC1
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#define ClockControl 0xCF
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/* 3CE */
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#define MiscExtFunc 0x0F
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#define PowerStatus 0x23
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#define MiscIntContReg 0x2F
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#define CyberControl 0x30
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#define CyberEnhance 0x31
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#define FPConfig 0x33
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#define VertStretch 0x52
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#define HorStretch 0x53
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#define BiosMode 0x5c
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#define BiosReg 0x5d
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2008-07-24 12:31:02 +08:00
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/* Graphics Engine */
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#define STATUS 0x2120
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#define OLDCMD 0x2124
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#define DRAWFL 0x2128
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#define OLDCLR 0x212C
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#define OLDDST 0x2138
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#define OLDSRC 0x213C
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#define OLDDIM 0x2140
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#define CMD 0x2144
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#define ROP 0x2148
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#define COLOR 0x2160
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2008-07-24 12:31:08 +08:00
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#define BGCOLOR 0x2164
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2008-07-24 12:31:02 +08:00
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#define SRC1 0x2100
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#define SRC2 0x2104
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#define DST1 0x2108
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#define DST2 0x210C
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#define ROP_S 0xCC
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#define ROP_P 0xF0
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#define ROP_X 0x66
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