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 23:07:57 +09:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2005-04-17 07:20:36 +09:00
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/* drivers/atm/uPD98402.h - NEC uPD98402 (PHY) declarations */
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/* Written 1995 by Werner Almesberger, EPFL LRC */
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#ifndef DRIVERS_ATM_uPD98402_H
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#define DRIVERS_ATM_uPD98402_H
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/*
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* Registers
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*/
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#define uPD98402_CMR 0x00 /* Command Register */
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#define uPD98402_MDR 0x01 /* Mode Register */
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#define uPD98402_PICR 0x02 /* PHY Interrupt Cause Register */
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#define uPD98402_PIMR 0x03 /* PHY Interrupt Mask Register */
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#define uPD98402_ACR 0x04 /* Alarm Cause Register */
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#define uPD98402_ACMR 0x05 /* Alarm Cause Mask Register */
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#define uPD98402_PCR 0x06 /* Performance Cause Register */
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#define uPD98402_PCMR 0x07 /* Performance Cause Mask Register */
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#define uPD98402_IACM 0x08 /* Internal Alarm Cause Mask Register */
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#define uPD98402_B1ECT 0x09 /* B1 Error Count Register */
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#define uPD98402_B2ECT 0x0a /* B2 Error Count Register */
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#define uPD98402_B3ECT 0x0b /* B3 Error Count Regster */
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#define uPD98402_PFECB 0x0c /* Path FEBE Count Register */
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#define uPD98402_LECCT 0x0d /* Line FEBE Count Register */
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#define uPD98402_HECCT 0x0e /* HEC Error Count Register */
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#define uPD98402_FJCT 0x0f /* Frequence Justification Count Reg */
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#define uPD98402_PCOCR 0x10 /* Perf. Counter Overflow Cause Reg */
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#define uPD98402_PCOMR 0x11 /* Perf. Counter Overflow Mask Reg */
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#define uPD98402_C11T 0x20 /* C11T Data Register */
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#define uPD98402_C12T 0x21 /* C12T Data Register */
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#define uPD98402_C13T 0x22 /* C13T Data Register */
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#define uPD98402_F1T 0x23 /* F1T Data Register */
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#define uPD98402_K2T 0x25 /* K2T Data Register */
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#define uPD98402_C2T 0x26 /* C2T Data Register */
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#define uPD98402_F2T 0x27 /* F2T Data Register */
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#define uPD98402_C11R 0x30 /* C11T Data Register */
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#define uPD98402_C12R 0x31 /* C12T Data Register */
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#define uPD98402_C13R 0x32 /* C13T Data Register */
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#define uPD98402_F1R 0x33 /* F1T Data Register */
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#define uPD98402_K2R 0x35 /* K2T Data Register */
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#define uPD98402_C2R 0x36 /* C2T Data Register */
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#define uPD98402_F2R 0x37 /* F2T Data Register */
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/* CMR is at 0x00 */
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#define uPD98402_CMR_PFRF 0x01 /* Send path FERF */
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#define uPD98402_CMR_LFRF 0x02 /* Send line FERF */
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#define uPD98402_CMR_PAIS 0x04 /* Send path AIS */
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#define uPD98402_CMR_LAIS 0x08 /* Send line AIS */
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/* MDR is at 0x01 */
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#define uPD98402_MDR_ALP 0x01 /* ATM layer loopback */
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#define uPD98402_MDR_TPLP 0x02 /* PMD loopback, to host */
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#define uPD98402_MDR_RPLP 0x04 /* PMD loopback, to network */
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#define uPD98402_MDR_SS0 0x08 /* SS0 */
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#define uPD98402_MDR_SS1 0x10 /* SS1 */
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#define uPD98402_MDR_SS_MASK 0x18 /* mask */
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#define uPD98402_MDR_SS_SHIFT 3 /* shift */
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#define uPD98402_MDR_HEC 0x20 /* disable HEC inbound processing */
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#define uPD98402_MDR_FSR 0x40 /* disable frame scrambler */
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#define uPD98402_MDR_CSR 0x80 /* disable cell scrambler */
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/* PICR is at 0x02, PIMR is at 0x03 */
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#define uPD98402_INT_PFM 0x01 /* performance counter has changed */
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#define uPD98402_INT_ALM 0x02 /* line fault */
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#define uPD98402_INT_RFO 0x04 /* receive FIFO overflow */
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#define uPD98402_INT_PCO 0x08 /* performance counter overflow */
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#define uPD98402_INT_OTD 0x20 /* OTD has occurred */
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#define uPD98402_INT_LOS 0x40 /* Loss Of Signal */
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#define uPD98402_INT_LOF 0x80 /* Loss Of Frame */
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/* ACR is as 0x04, ACMR is at 0x05 */
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#define uPD98402_ALM_PFRF 0x01 /* path FERF */
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#define uPD98402_ALM_LFRF 0x02 /* line FERF */
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#define uPD98402_ALM_PAIS 0x04 /* path AIS */
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#define uPD98402_ALM_LAIS 0x08 /* line AIS */
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#define uPD98402_ALM_LOD 0x10 /* loss of delineation */
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#define uPD98402_ALM_LOP 0x20 /* loss of pointer */
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#define uPD98402_ALM_OOF 0x40 /* out of frame */
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/* PCR is at 0x06, PCMR is at 0x07 */
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#define uPD98402_PFM_PFEB 0x01 /* path FEBE */
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#define uPD98402_PFM_LFEB 0x02 /* line FEBE */
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#define uPD98402_PFM_B3E 0x04 /* B3 error */
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#define uPD98402_PFM_B2E 0x08 /* B2 error */
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#define uPD98402_PFM_B1E 0x10 /* B1 error */
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#define uPD98402_PFM_FJ 0x20 /* frequency justification */
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/* IACM is at 0x08 */
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#define uPD98402_IACM_PFRF 0x01 /* don't generate path FERF */
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#define uPD98402_IACM_LFRF 0x02 /* don't generate line FERF */
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/* PCOCR is at 0x010, PCOMR is at 0x11 */
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#define uPD98402_PCO_B1EC 0x01 /* B1ECT overflow */
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#define uPD98402_PCO_B2EC 0x02 /* B2ECT overflow */
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#define uPD98402_PCO_B3EC 0x04 /* B3ECT overflow */
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#define uPD98402_PCO_PFBC 0x08 /* PFEBC overflow */
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#define uPD98402_PCO_LFBC 0x10 /* LFEVC overflow */
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#define uPD98402_PCO_HECC 0x20 /* HECCT overflow */
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#define uPD98402_PCO_FJC 0x40 /* FJCT overflow */
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int uPD98402_init(struct atm_dev *dev);
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#endif
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