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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2008-11-28 06:19:33 +00:00
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#ifndef __ASM_ARCH_REGS_AC97_H
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#define __ASM_ARCH_REGS_AC97_H
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/*
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* AC97 Controller registers
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*/
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2019-09-18 08:52:31 +00:00
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#define POCR (0x0000) /* PCM Out Control Register */
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2008-11-28 06:19:33 +00:00
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#define POCR_FEIE (1 << 3) /* FIFO Error Interrupt Enable */
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#define POCR_FSRIE (1 << 1) /* FIFO Service Request Interrupt Enable */
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#define PICR (0x0004) /* PCM In Control Register */
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#define PICR_FEIE (1 << 3) /* FIFO Error Interrupt Enable */
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#define PICR_FSRIE (1 << 1) /* FIFO Service Request Interrupt Enable */
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#define MCCR (0x0008) /* Mic In Control Register */
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#define MCCR_FEIE (1 << 3) /* FIFO Error Interrupt Enable */
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#define MCCR_FSRIE (1 << 1) /* FIFO Service Request Interrupt Enable */
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2019-09-18 08:52:31 +00:00
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#define GCR (0x000C) /* Global Control Register */
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2008-11-28 06:19:33 +00:00
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#ifdef CONFIG_PXA3xx
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#define GCR_CLKBPB (1 << 31) /* Internal clock enable */
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#endif
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#define GCR_nDMAEN (1 << 24) /* non DMA Enable */
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#define GCR_CDONE_IE (1 << 19) /* Command Done Interrupt Enable */
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#define GCR_SDONE_IE (1 << 18) /* Status Done Interrupt Enable */
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#define GCR_SECRDY_IEN (1 << 9) /* Secondary Ready Interrupt Enable */
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#define GCR_PRIRDY_IEN (1 << 8) /* Primary Ready Interrupt Enable */
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#define GCR_SECRES_IEN (1 << 5) /* Secondary Resume Interrupt Enable */
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#define GCR_PRIRES_IEN (1 << 4) /* Primary Resume Interrupt Enable */
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#define GCR_ACLINK_OFF (1 << 3) /* AC-link Shut Off */
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#define GCR_WARM_RST (1 << 2) /* AC97 Warm Reset */
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#define GCR_COLD_RST (1 << 1) /* AC'97 Cold Reset (0 = active) */
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#define GCR_GIE (1 << 0) /* Codec GPI Interrupt Enable */
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#define POSR (0x0010) /* PCM Out Status Register */
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#define POSR_FIFOE (1 << 4) /* FIFO error */
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#define POSR_FSR (1 << 2) /* FIFO Service Request */
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#define PISR (0x0014) /* PCM In Status Register */
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#define PISR_FIFOE (1 << 4) /* FIFO error */
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#define PISR_EOC (1 << 3) /* DMA End-of-Chain (exclusive clear) */
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#define PISR_FSR (1 << 2) /* FIFO Service Request */
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#define MCSR (0x0018) /* Mic In Status Register */
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#define MCSR_FIFOE (1 << 4) /* FIFO error */
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#define MCSR_EOC (1 << 3) /* DMA End-of-Chain (exclusive clear) */
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#define MCSR_FSR (1 << 2) /* FIFO Service Request */
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#define GSR (0x001C) /* Global Status Register */
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#define GSR_CDONE (1 << 19) /* Command Done */
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#define GSR_SDONE (1 << 18) /* Status Done */
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#define GSR_RDCS (1 << 15) /* Read Completion Status */
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#define GSR_BIT3SLT12 (1 << 14) /* Bit 3 of slot 12 */
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#define GSR_BIT2SLT12 (1 << 13) /* Bit 2 of slot 12 */
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#define GSR_BIT1SLT12 (1 << 12) /* Bit 1 of slot 12 */
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#define GSR_SECRES (1 << 11) /* Secondary Resume Interrupt */
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#define GSR_PRIRES (1 << 10) /* Primary Resume Interrupt */
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#define GSR_SCR (1 << 9) /* Secondary Codec Ready */
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#define GSR_PCR (1 << 8) /* Primary Codec Ready */
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#define GSR_MCINT (1 << 7) /* Mic In Interrupt */
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#define GSR_POINT (1 << 6) /* PCM Out Interrupt */
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#define GSR_PIINT (1 << 5) /* PCM In Interrupt */
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#define GSR_ACOFFD (1 << 3) /* AC-link Shut Off Done */
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#define GSR_MOINT (1 << 2) /* Modem Out Interrupt */
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#define GSR_MIINT (1 << 1) /* Modem In Interrupt */
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#define GSR_GSCI (1 << 0) /* Codec GPI Status Change Interrupt */
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#define CAR (0x0020) /* CODEC Access Register */
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#define CAR_CAIP (1 << 0) /* Codec Access In Progress */
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2019-09-18 08:52:31 +00:00
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#define PCDR (0x0040) /* PCM FIFO Data Register */
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#define MCDR (0x0060) /* Mic-in FIFO Data Register */
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2019-09-18 08:52:31 +00:00
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#define MOCR (0x0100) /* Modem Out Control Register */
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#define MOCR_FEIE (1 << 3) /* FIFO Error */
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#define MOCR_FSRIE (1 << 1) /* FIFO Service Request Interrupt Enable */
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2019-09-18 08:52:31 +00:00
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#define MICR (0x0108) /* Modem In Control Register */
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2008-11-28 06:19:33 +00:00
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#define MICR_FEIE (1 << 3) /* FIFO Error */
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#define MICR_FSRIE (1 << 1) /* FIFO Service Request Interrupt Enable */
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2019-09-18 08:52:31 +00:00
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#define MOSR (0x0110) /* Modem Out Status Register */
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2008-11-28 06:19:33 +00:00
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#define MOSR_FIFOE (1 << 4) /* FIFO error */
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#define MOSR_FSR (1 << 2) /* FIFO Service Request */
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2019-09-18 08:52:31 +00:00
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#define MISR (0x0118) /* Modem In Status Register */
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2008-11-28 06:19:33 +00:00
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#define MISR_FIFOE (1 << 4) /* FIFO error */
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#define MISR_EOC (1 << 3) /* DMA End-of-Chain (exclusive clear) */
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#define MISR_FSR (1 << 2) /* FIFO Service Request */
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2019-09-18 08:52:31 +00:00
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#define MODR (0x0140) /* Modem FIFO Data Register */
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2008-11-28 06:19:33 +00:00
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2019-09-18 08:52:31 +00:00
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#define PAC_REG_BASE (0x0200) /* Primary Audio Codec */
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#define SAC_REG_BASE (0x0300) /* Secondary Audio Codec */
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#define PMC_REG_BASE (0x0400) /* Primary Modem Codec */
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#define SMC_REG_BASE (0x0500) /* Secondary Modem Codec */
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2008-11-28 06:19:33 +00:00
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#endif /* __ASM_ARCH_REGS_AC97_H */
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