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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2012-06-04 15:56:15 +08:00
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/*
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* FIXME correct answer depends on hmc_mode,
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* as does (on omap1) any nonzero value for config->otg port number
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*/
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2013-04-02 04:03:00 +08:00
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#if IS_ENABLED(CONFIG_USB_OMAP)
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2012-06-04 15:56:15 +08:00
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#define is_usb0_device(config) 1
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#else
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#define is_usb0_device(config) 0
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#endif
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2013-12-06 22:13:04 +08:00
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#include <linux/platform_data/usb-omap1.h>
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2012-06-04 15:56:15 +08:00
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2016-08-12 03:29:44 +08:00
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#if IS_ENABLED(CONFIG_USB)
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2012-06-04 15:56:15 +08:00
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void omap1_usb_init(struct omap_usb_config *pdata);
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#else
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static inline void omap1_usb_init(struct omap_usb_config *pdata)
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{
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}
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#endif
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#define OMAP1_OTG_BASE 0xfffb0400
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#define OMAP1_UDC_BASE 0xfffb4000
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#define OMAP1_OHCI_BASE 0xfffba000
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#define OMAP2_OHCI_BASE 0x4805e000
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#define OMAP2_UDC_BASE 0x4805e200
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#define OMAP2_OTG_BASE 0x4805e300
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#define OTG_BASE OMAP1_OTG_BASE
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#define UDC_BASE OMAP1_UDC_BASE
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#define OMAP_OHCI_BASE OMAP1_OHCI_BASE
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/*
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* OTG and transceiver registers, for OMAPs starting with ARM926
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*/
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#define OTG_REV (OTG_BASE + 0x00)
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#define OTG_SYSCON_1 (OTG_BASE + 0x04)
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# define USB2_TRX_MODE(w) (((w)>>24)&0x07)
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# define USB1_TRX_MODE(w) (((w)>>20)&0x07)
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# define USB0_TRX_MODE(w) (((w)>>16)&0x07)
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# define OTG_IDLE_EN (1 << 15)
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# define HST_IDLE_EN (1 << 14)
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# define DEV_IDLE_EN (1 << 13)
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# define OTG_RESET_DONE (1 << 2)
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# define OTG_SOFT_RESET (1 << 1)
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#define OTG_SYSCON_2 (OTG_BASE + 0x08)
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# define OTG_EN (1 << 31)
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# define USBX_SYNCHRO (1 << 30)
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# define OTG_MST16 (1 << 29)
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# define SRP_GPDATA (1 << 28)
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# define SRP_GPDVBUS (1 << 27)
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# define SRP_GPUVBUS(w) (((w)>>24)&0x07)
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# define A_WAIT_VRISE(w) (((w)>>20)&0x07)
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# define B_ASE_BRST(w) (((w)>>16)&0x07)
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# define SRP_DPW (1 << 14)
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# define SRP_DATA (1 << 13)
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# define SRP_VBUS (1 << 12)
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# define OTG_PADEN (1 << 10)
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# define HMC_PADEN (1 << 9)
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# define UHOST_EN (1 << 8)
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# define HMC_TLLSPEED (1 << 7)
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# define HMC_TLLATTACH (1 << 6)
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# define OTG_HMC(w) (((w)>>0)&0x3f)
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#define OTG_CTRL (OTG_BASE + 0x0c)
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# define OTG_USB2_EN (1 << 29)
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# define OTG_USB2_DP (1 << 28)
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# define OTG_USB2_DM (1 << 27)
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# define OTG_USB1_EN (1 << 26)
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# define OTG_USB1_DP (1 << 25)
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# define OTG_USB1_DM (1 << 24)
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# define OTG_USB0_EN (1 << 23)
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# define OTG_USB0_DP (1 << 22)
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# define OTG_USB0_DM (1 << 21)
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# define OTG_ASESSVLD (1 << 20)
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# define OTG_BSESSEND (1 << 19)
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# define OTG_BSESSVLD (1 << 18)
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# define OTG_VBUSVLD (1 << 17)
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# define OTG_ID (1 << 16)
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# define OTG_DRIVER_SEL (1 << 15)
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# define OTG_A_SETB_HNPEN (1 << 12)
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# define OTG_A_BUSREQ (1 << 11)
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# define OTG_B_HNPEN (1 << 9)
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# define OTG_B_BUSREQ (1 << 8)
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# define OTG_BUSDROP (1 << 7)
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# define OTG_PULLDOWN (1 << 5)
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# define OTG_PULLUP (1 << 4)
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# define OTG_DRV_VBUS (1 << 3)
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# define OTG_PD_VBUS (1 << 2)
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# define OTG_PU_VBUS (1 << 1)
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# define OTG_PU_ID (1 << 0)
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#define OTG_IRQ_EN (OTG_BASE + 0x10) /* 16-bit */
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# define DRIVER_SWITCH (1 << 15)
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# define A_VBUS_ERR (1 << 13)
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# define A_REQ_TMROUT (1 << 12)
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# define A_SRP_DETECT (1 << 11)
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# define B_HNP_FAIL (1 << 10)
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# define B_SRP_TMROUT (1 << 9)
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# define B_SRP_DONE (1 << 8)
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# define B_SRP_STARTED (1 << 7)
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# define OPRT_CHG (1 << 0)
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#define OTG_IRQ_SRC (OTG_BASE + 0x14) /* 16-bit */
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// same bits as in IRQ_EN
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#define OTG_OUTCTRL (OTG_BASE + 0x18) /* 16-bit */
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# define OTGVPD (1 << 14)
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# define OTGVPU (1 << 13)
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# define OTGPUID (1 << 12)
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# define USB2VDR (1 << 10)
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# define USB2PDEN (1 << 9)
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# define USB2PUEN (1 << 8)
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# define USB1VDR (1 << 6)
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# define USB1PDEN (1 << 5)
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# define USB1PUEN (1 << 4)
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# define USB0VDR (1 << 2)
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# define USB0PDEN (1 << 1)
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# define USB0PUEN (1 << 0)
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#define OTG_TEST (OTG_BASE + 0x20) /* 16-bit */
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#define OTG_VENDOR_CODE (OTG_BASE + 0xfc) /* 16-bit */
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/*-------------------------------------------------------------------------*/
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/* OMAP1 */
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#define USB_TRANSCEIVER_CTRL (0xfffe1000 + 0x0064)
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# define CONF_USB2_UNI_R (1 << 8)
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# define CONF_USB1_UNI_R (1 << 7)
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# define CONF_USB_PORT0_R(x) (((x)>>4)&0x7)
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# define CONF_USB0_ISOLATE_R (1 << 3)
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# define CONF_USB_PWRDN_DM_R (1 << 2)
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# define CONF_USB_PWRDN_DP_R (1 << 1)
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