![Greg Kroah-Hartman](/assets/img/avatar_default.png)
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>
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ARCH_ORION5X_COMMON_H
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#define __ARCH_ORION5X_COMMON_H
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#include <linux/reboot.h>
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struct dsa_chip_data;
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struct mv643xx_eth_platform_data;
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struct mv_sata_platform_data;
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#define ORION_MBUS_PCIE_MEM_TARGET 0x04
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#define ORION_MBUS_PCIE_MEM_ATTR 0x59
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#define ORION_MBUS_PCIE_IO_TARGET 0x04
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#define ORION_MBUS_PCIE_IO_ATTR 0x51
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#define ORION_MBUS_PCIE_WA_TARGET 0x04
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#define ORION_MBUS_PCIE_WA_ATTR 0x79
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#define ORION_MBUS_PCI_MEM_TARGET 0x03
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#define ORION_MBUS_PCI_MEM_ATTR 0x59
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#define ORION_MBUS_PCI_IO_TARGET 0x03
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#define ORION_MBUS_PCI_IO_ATTR 0x51
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#define ORION_MBUS_DEVBUS_BOOT_TARGET 0x01
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#define ORION_MBUS_DEVBUS_BOOT_ATTR 0x0f
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#define ORION_MBUS_DEVBUS_TARGET(cs) 0x01
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#define ORION_MBUS_DEVBUS_ATTR(cs) (~(1 << cs))
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#define ORION_MBUS_SRAM_TARGET 0x09
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#define ORION_MBUS_SRAM_ATTR 0x00
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/*
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* Basic Orion init functions used early by machine-setup.
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*/
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void orion5x_map_io(void);
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void orion5x_init_early(void);
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void orion5x_init_irq(void);
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void orion5x_init(void);
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void orion5x_id(u32 *dev, u32 *rev, char **dev_name);
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void clk_init(void);
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extern int orion5x_tclk;
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extern void orion5x_timer_init(void);
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void orion5x_setup_wins(void);
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void orion5x_ehci0_init(void);
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void orion5x_ehci1_init(void);
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void orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data);
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void orion5x_eth_switch_init(struct dsa_chip_data *d);
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void orion5x_i2c_init(void);
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void orion5x_sata_init(struct mv_sata_platform_data *sata_data);
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void orion5x_spi_init(void);
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void orion5x_uart0_init(void);
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void orion5x_uart1_init(void);
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void orion5x_xor_init(void);
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void orion5x_restart(enum reboot_mode, const char *);
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/*
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* PCIe/PCI functions.
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*/
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struct pci_bus;
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struct pci_host_bridge;
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struct pci_sys_data;
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struct pci_dev;
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void orion5x_pcie_id(u32 *dev, u32 *rev);
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void orion5x_pci_disable(void);
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void orion5x_pci_set_cardbus_mode(void);
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int orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys);
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int orion5x_pci_sys_scan_bus(int nr, struct pci_host_bridge *bridge);
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int orion5x_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
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struct tag;
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extern void __init tag_fixup_mem32(struct tag *, char **);
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#ifdef CONFIG_MACH_MSS2_DT
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extern void mss2_init(void);
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#else
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static inline void mss2_init(void) {}
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#endif
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/*****************************************************************************
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* Helpers to access Orion registers
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****************************************************************************/
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/*
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* These are not preempt-safe. Locks, if needed, must be taken
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* care of by the caller.
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*/
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#define orion5x_setbits(r, mask) writel(readl(r) | (mask), (r))
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#define orion5x_clrbits(r, mask) writel(readl(r) & ~(mask), (r))
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#endif
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