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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2005-05-17 12:54:10 +08:00
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/*
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2009-05-20 16:08:26 +08:00
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* Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
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* flexcop-common.h - common header file for device-specific source files
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* see flexcop.c for copyright information
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2005-05-17 12:54:10 +08:00
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*/
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#ifndef __FLEXCOP_COMMON_H__
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#define __FLEXCOP_COMMON_H__
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2011-06-06 18:43:46 +08:00
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#include <linux/interrupt.h>
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2005-05-17 12:54:10 +08:00
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#include <linux/pci.h>
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2006-02-07 16:49:14 +08:00
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#include <linux/mutex.h>
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2005-05-17 12:54:10 +08:00
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#include "flexcop-reg.h"
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2017-12-29 02:03:51 +08:00
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#include <media/dmxdev.h>
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#include <media/dvb_demux.h>
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#include <media/dvb_net.h>
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#include <media/dvb_frontend.h>
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2005-05-17 12:54:10 +08:00
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#define FC_MAX_FEED 256
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#ifndef FC_LOG_PREFIX
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#warning please define a log prefix for your file, using a default one
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#define FC_LOG_PREFIX "b2c2-undef"
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#endif
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/* Steal from usb.h */
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#undef err
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2009-03-29 18:46:58 +08:00
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#define err(format, arg...) \
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printk(KERN_ERR FC_LOG_PREFIX ": " format "\n" , ## arg)
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2005-05-17 12:54:10 +08:00
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#undef info
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2009-03-29 18:46:58 +08:00
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#define info(format, arg...) \
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printk(KERN_INFO FC_LOG_PREFIX ": " format "\n" , ## arg)
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2005-05-17 12:54:10 +08:00
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#undef warn
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2009-03-29 18:46:58 +08:00
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#define warn(format, arg...) \
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printk(KERN_WARNING FC_LOG_PREFIX ": " format "\n" , ## arg)
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2005-05-17 12:54:10 +08:00
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struct flexcop_dma {
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struct pci_dev *pdev;
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u8 *cpu_addr0;
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dma_addr_t dma_addr0;
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u8 *cpu_addr1;
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dma_addr_t dma_addr1;
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u32 size; /* size of each address in bytes */
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};
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2008-03-30 07:49:57 +08:00
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struct flexcop_i2c_adapter {
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struct flexcop_device *fc;
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struct i2c_adapter i2c_adap;
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u8 no_base_addr;
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flexcop_i2c_port_t port;
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};
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2005-05-17 12:54:10 +08:00
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/* Control structure for data definitions that are common to
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* the B2C2-based PCI and USB devices.
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*/
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struct flexcop_device {
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/* general */
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struct device *dev; /* for firmware_class */
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#define FC_STATE_DVB_INIT 0x01
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#define FC_STATE_I2C_INIT 0x02
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#define FC_STATE_FE_INIT 0x04
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int init_state;
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/* device information */
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int has_32_hw_pid_filter;
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flexcop_revision_t rev;
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flexcop_device_type_t dev_type;
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flexcop_bus_t bus_type;
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/* dvb stuff */
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struct dvb_adapter dvb_adapter;
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struct dvb_frontend *fe;
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struct dvb_net dvbnet;
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struct dvb_demux demux;
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struct dmxdev dmxdev;
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struct dmx_frontend hw_frontend;
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struct dmx_frontend mem_frontend;
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int (*fe_sleep) (struct dvb_frontend *);
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2008-03-30 07:49:57 +08:00
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struct flexcop_i2c_adapter fc_i2c_adap[3];
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2006-02-07 16:49:14 +08:00
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struct mutex i2c_mutex;
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2005-05-17 12:54:16 +08:00
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struct module *owner;
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2005-05-17 12:54:10 +08:00
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/* options and status */
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2005-05-17 12:54:15 +08:00
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int extra_feedcount;
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2005-05-17 12:54:10 +08:00
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int feedcount;
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int pid_filtering;
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2005-05-17 12:54:15 +08:00
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int fullts_streaming_state;
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2015-05-31 02:10:06 +08:00
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int skip_6_hw_pid_filter;
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2005-05-17 12:54:10 +08:00
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/* bus specific callbacks */
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2009-03-29 18:46:58 +08:00
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flexcop_ibi_value(*read_ibi_reg) (struct flexcop_device *,
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flexcop_ibi_register);
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int (*write_ibi_reg) (struct flexcop_device *,
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flexcop_ibi_register, flexcop_ibi_value);
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int (*i2c_request) (struct flexcop_i2c_adapter *,
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2008-03-30 07:49:57 +08:00
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flexcop_access_op_t, u8 chipaddr, u8 addr, u8 *buf, u16 len);
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2009-03-29 18:46:58 +08:00
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int (*stream_control) (struct flexcop_device *, int);
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2005-05-17 12:54:10 +08:00
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int (*get_mac_addr) (struct flexcop_device *fc, int extended);
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void *bus_specific;
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};
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/* exported prototypes */
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/* from flexcop.c */
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void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len);
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void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no);
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struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len);
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2009-03-29 18:46:58 +08:00
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void flexcop_device_kfree(struct flexcop_device *);
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2005-05-17 12:54:10 +08:00
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2009-03-29 18:46:58 +08:00
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int flexcop_device_initialize(struct flexcop_device *);
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2005-05-17 12:54:10 +08:00
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void flexcop_device_exit(struct flexcop_device *fc);
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2005-07-08 08:57:49 +08:00
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void flexcop_reset_block_300(struct flexcop_device *fc);
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2005-05-17 12:54:10 +08:00
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/* from flexcop-dma.c */
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2009-03-29 18:46:58 +08:00
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int flexcop_dma_allocate(struct pci_dev *pdev,
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struct flexcop_dma *dma, u32 size);
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2005-05-17 12:54:10 +08:00
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void flexcop_dma_free(struct flexcop_dma *dma);
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2009-03-29 18:46:58 +08:00
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int flexcop_dma_control_timer_irq(struct flexcop_device *fc,
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flexcop_dma_index_t no, int onoff);
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int flexcop_dma_control_size_irq(struct flexcop_device *fc,
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flexcop_dma_index_t no, int onoff);
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int flexcop_dma_config(struct flexcop_device *fc, struct flexcop_dma *dma,
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flexcop_dma_index_t dma_idx);
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int flexcop_dma_xfer_control(struct flexcop_device *fc,
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flexcop_dma_index_t dma_idx, flexcop_dma_addr_index_t index,
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int onoff);
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int flexcop_dma_config_timer(struct flexcop_device *fc,
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flexcop_dma_index_t dma_idx, u8 cycles);
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2005-05-17 12:54:10 +08:00
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/* from flexcop-eeprom.c */
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/* the PCI part uses this call to get the MAC address, the USB part has its own */
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int flexcop_eeprom_check_mac_addr(struct flexcop_device *fc, int extended);
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/* from flexcop-i2c.c */
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/* the PCI part uses this a i2c_request callback, whereas the usb part has its own
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* one. We have it in flexcop-i2c.c, because it is going via the actual
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* I2C-channel of the flexcop.
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*/
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2008-03-30 07:49:57 +08:00
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int flexcop_i2c_request(struct flexcop_i2c_adapter*, flexcop_access_op_t,
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u8 chipaddr, u8 addr, u8 *buf, u16 len);
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2005-05-17 12:54:10 +08:00
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/* from flexcop-sram.c */
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2009-03-29 18:46:58 +08:00
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int flexcop_sram_set_dest(struct flexcop_device *fc, flexcop_sram_dest_t dest,
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flexcop_sram_dest_target_t target);
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2005-05-17 12:54:10 +08:00
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void flexcop_wan_set_speed(struct flexcop_device *fc, flexcop_wan_speed_t s);
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2009-03-29 18:46:58 +08:00
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void flexcop_sram_ctrl(struct flexcop_device *fc,
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int usb_wan, int sramdma, int maximumfill);
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2005-05-17 12:54:10 +08:00
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/* global prototypes for the flexcop-chip */
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/* from flexcop-fe-tuner.c */
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2009-03-29 18:46:58 +08:00
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int flexcop_frontend_init(struct flexcop_device *fc);
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2005-05-17 12:54:10 +08:00
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void flexcop_frontend_exit(struct flexcop_device *fc);
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/* from flexcop-i2c.c */
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int flexcop_i2c_init(struct flexcop_device *fc);
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void flexcop_i2c_exit(struct flexcop_device *fc);
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/* from flexcop-sram.c */
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int flexcop_sram_init(struct flexcop_device *fc);
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/* from flexcop-misc.c */
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void flexcop_determine_revision(struct flexcop_device *fc);
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2009-03-29 18:46:58 +08:00
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void flexcop_device_name(struct flexcop_device *fc,
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const char *prefix, const char *suffix);
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void flexcop_dump_reg(struct flexcop_device *fc,
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flexcop_ibi_register reg, int num);
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2005-05-17 12:54:10 +08:00
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/* from flexcop-hw-filter.c */
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2009-03-29 18:46:58 +08:00
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int flexcop_pid_feed_control(struct flexcop_device *fc,
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struct dvb_demux_feed *dvbdmxfeed, int onoff);
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2005-05-17 12:54:10 +08:00
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void flexcop_hw_filter_init(struct flexcop_device *fc);
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void flexcop_smc_ctrl(struct flexcop_device *fc, int onoff);
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void flexcop_set_mac_filter(struct flexcop_device *fc, u8 mac[6]);
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void flexcop_mac_filter_ctrl(struct flexcop_device *fc, int onoff);
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#endif
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