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
|
2011-05-06 18:00:15 +08:00
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/*
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* UHCI HCD (Host Controller Driver) PCI Bus Glue.
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*
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* Extracted from uhci-hcd.c:
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* Maintainer: Alan Stern <stern@rowland.harvard.edu>
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*
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* (C) Copyright 1999 Linus Torvalds
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* (C) Copyright 1999-2002 Johannes Erdfelt, johannes@erdfelt.com
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* (C) Copyright 1999 Randy Dunlap
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* (C) Copyright 1999 Georg Acher, acher@in.tum.de
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* (C) Copyright 1999 Deti Fliegl, deti@fliegl.de
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* (C) Copyright 1999 Thomas Sailer, sailer@ife.ee.ethz.ch
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* (C) Copyright 1999 Roman Weissgaerber, weissg@vienna.at
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* (C) Copyright 2000 Yggdrasil Computing, Inc. (port of new PCI interface
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* support from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
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* (C) Copyright 1999 Gregory P. Smith (from usb-ohci.c)
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* (C) Copyright 2004-2007 Alan Stern, stern@rowland.harvard.edu
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*/
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#include "pci-quirks.h"
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/*
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* Make sure the controller is completely inactive, unable to
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* generate interrupts or do DMA.
|
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*/
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static void uhci_pci_reset_hc(struct uhci_hcd *uhci)
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{
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uhci_reset_hc(to_pci_dev(uhci_dev(uhci)), uhci->io_addr);
|
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}
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/*
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* Initialize a controller that was newly discovered or has just been
|
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* resumed. In either case we can't be sure of its previous state.
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*
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* Returns: 1 if the controller was reset, 0 otherwise.
|
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|
|
*/
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static int uhci_pci_check_and_reset_hc(struct uhci_hcd *uhci)
|
|
|
|
{
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return uhci_check_and_reset_hc(to_pci_dev(uhci_dev(uhci)),
|
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|
uhci->io_addr);
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}
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/*
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* Store the basic register settings needed by the controller.
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* This function is called at the end of configure_hc in uhci-hcd.c.
|
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|
*/
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static void uhci_pci_configure_hc(struct uhci_hcd *uhci)
|
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|
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{
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struct pci_dev *pdev = to_pci_dev(uhci_dev(uhci));
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/* Enable PIRQ */
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pci_write_config_word(pdev, USBLEGSUP, USBLEGSUP_DEFAULT);
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/* Disable platform-specific non-PME# wakeup */
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if (pdev->vendor == PCI_VENDOR_ID_INTEL)
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pci_write_config_byte(pdev, USBRES_INTEL, 0);
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}
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static int uhci_pci_resume_detect_interrupts_are_broken(struct uhci_hcd *uhci)
|
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|
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{
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int port;
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switch (to_pci_dev(uhci_dev(uhci))->vendor) {
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default:
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break;
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case PCI_VENDOR_ID_GENESYS:
|
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/* Genesys Logic's GL880S controllers don't generate
|
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|
* resume-detect interrupts.
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|
*/
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return 1;
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case PCI_VENDOR_ID_INTEL:
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/* Some of Intel's USB controllers have a bug that causes
|
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|
|
* resume-detect interrupts if any port has an over-current
|
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|
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* condition. To make matters worse, some motherboards
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|
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* hardwire unused USB ports' over-current inputs active!
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|
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* To prevent problems, we will not enable resume-detect
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* interrupts if any ports are OC.
|
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|
*/
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for (port = 0; port < uhci->rh_numports; ++port) {
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if (inw(uhci->io_addr + USBPORTSC1 + port * 2) &
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USBPORTSC_OC)
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return 1;
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}
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break;
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}
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return 0;
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}
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static int uhci_pci_global_suspend_mode_is_broken(struct uhci_hcd *uhci)
|
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|
{
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int port;
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const char *sys_info;
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static const char bad_Asus_board[] = "A7V8X";
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/* One of Asus's motherboards has a bug which causes it to
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* wake up immediately from suspend-to-RAM if any of the ports
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* are connected. In such cases we will not set EGSM.
|
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|
*/
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sys_info = dmi_get_system_info(DMI_BOARD_NAME);
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if (sys_info && !strcmp(sys_info, bad_Asus_board)) {
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for (port = 0; port < uhci->rh_numports; ++port) {
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if (inw(uhci->io_addr + USBPORTSC1 + port * 2) &
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USBPORTSC_CCS)
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return 1;
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}
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}
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return 0;
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}
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static int uhci_pci_init(struct usb_hcd *hcd)
|
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{
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struct uhci_hcd *uhci = hcd_to_uhci(hcd);
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uhci->io_addr = (unsigned long) hcd->rsrc_start;
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uhci->rh_numports = uhci_count_ports(hcd);
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/* Intel controllers report the OverCurrent bit active on.
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* VIA controllers report it active off, so we'll adjust the
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* bit value. (It's not standardized in the UHCI spec.)
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*/
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if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_VIA)
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uhci->oc_low = 1;
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/* HP's server management chip requires a longer port reset delay. */
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if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_HP)
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uhci->wait_for_hp = 1;
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2016-10-22 04:49:07 +08:00
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/* Intel controllers use non-PME wakeup signalling */
|
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if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_INTEL)
|
2017-06-24 07:58:53 +08:00
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device_set_wakeup_capable(uhci_dev(uhci), true);
|
2016-10-22 04:49:07 +08:00
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|
2011-05-06 18:00:15 +08:00
|
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/* Set up pointers to PCI-specific functions */
|
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uhci->reset_hc = uhci_pci_reset_hc;
|
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uhci->check_and_reset_hc = uhci_pci_check_and_reset_hc;
|
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uhci->configure_hc = uhci_pci_configure_hc;
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uhci->resume_detect_interrupts_are_broken =
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uhci_pci_resume_detect_interrupts_are_broken;
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uhci->global_suspend_mode_is_broken =
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uhci_pci_global_suspend_mode_is_broken;
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/* Kick BIOS off this hardware and reset if the controller
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* isn't already safely quiescent.
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*/
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check_and_reset_hc(uhci);
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return 0;
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}
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/* Make sure the controller is quiescent and that we're not using it
|
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* any more. This is mainly for the benefit of programs which, like kexec,
|
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* expect the hardware to be idle: not doing DMA or generating IRQs.
|
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*
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* This routine may be called in a damaged or failing kernel. Hence we
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* do not acquire the spinlock before shutting down the controller.
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*/
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static void uhci_shutdown(struct pci_dev *pdev)
|
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{
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struct usb_hcd *hcd = pci_get_drvdata(pdev);
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uhci_hc_died(hcd_to_uhci(hcd));
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}
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#ifdef CONFIG_PM
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2013-10-18 23:19:18 +08:00
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static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated);
|
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2011-05-06 18:00:15 +08:00
|
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static int uhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
|
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|
{
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struct uhci_hcd *uhci = hcd_to_uhci(hcd);
|
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struct pci_dev *pdev = to_pci_dev(uhci_dev(uhci));
|
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int rc = 0;
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dev_dbg(uhci_dev(uhci), "%s\n", __func__);
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spin_lock_irq(&uhci->lock);
|
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|
if (!HCD_HW_ACCESSIBLE(hcd) || uhci->dead)
|
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goto done_okay; /* Already suspended or dead */
|
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|
|
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/* All PCI host controllers are required to disable IRQ generation
|
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|
* at the source, so we must turn off PIRQ.
|
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|
*/
|
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pci_write_config_word(pdev, USBLEGSUP, 0);
|
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clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
|
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|
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/* Enable platform-specific non-PME# wakeup */
|
|
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|
if (do_wakeup) {
|
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|
|
if (pdev->vendor == PCI_VENDOR_ID_INTEL)
|
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|
|
pci_write_config_byte(pdev, USBRES_INTEL,
|
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|
|
USBPORT1EN | USBPORT2EN);
|
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|
}
|
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done_okay:
|
|
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|
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
|
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|
|
spin_unlock_irq(&uhci->lock);
|
2013-10-18 23:19:18 +08:00
|
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synchronize_irq(hcd->irq);
|
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|
|
|
|
|
|
/* Check for race with a wakeup request */
|
|
|
|
if (do_wakeup && HCD_WAKEUP_PENDING(hcd)) {
|
|
|
|
uhci_pci_resume(hcd, false);
|
|
|
|
rc = -EBUSY;
|
|
|
|
}
|
2011-05-06 18:00:15 +08:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
|
|
|
|
{
|
|
|
|
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
|
|
|
|
|
|
|
|
dev_dbg(uhci_dev(uhci), "%s\n", __func__);
|
|
|
|
|
|
|
|
/* Since we aren't in D3 any more, it's safe to set this flag
|
|
|
|
* even if the controller was dead.
|
|
|
|
*/
|
|
|
|
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
|
|
|
|
|
|
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spin_lock_irq(&uhci->lock);
|
|
|
|
|
|
|
|
/* Make sure resume from hibernation re-enumerates everything */
|
|
|
|
if (hibernated) {
|
|
|
|
uhci->reset_hc(uhci);
|
|
|
|
finish_reset(uhci);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The firmware may have changed the controller settings during
|
|
|
|
* a system wakeup. Check it and reconfigure to avoid problems.
|
|
|
|
*/
|
|
|
|
else {
|
|
|
|
check_and_reset_hc(uhci);
|
|
|
|
}
|
|
|
|
configure_hc(uhci);
|
|
|
|
|
|
|
|
/* Tell the core if the controller had to be reset */
|
|
|
|
if (uhci->rh_state == UHCI_RH_RESET)
|
|
|
|
usb_root_hub_lost_power(hcd->self.root_hub);
|
|
|
|
|
|
|
|
spin_unlock_irq(&uhci->lock);
|
|
|
|
|
|
|
|
/* If interrupts don't work and remote wakeup is enabled then
|
|
|
|
* the suspended root hub needs to be polled.
|
|
|
|
*/
|
|
|
|
if (!uhci->RD_enable && hcd->self.root_hub->do_remote_wakeup)
|
|
|
|
set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
|
|
|
|
|
|
|
|
/* Does the root hub have a port wakeup pending? */
|
|
|
|
usb_hcd_poll_rh_status(hcd);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static const struct hc_driver uhci_driver = {
|
|
|
|
.description = hcd_name,
|
|
|
|
.product_desc = "UHCI Host Controller",
|
|
|
|
.hcd_priv_size = sizeof(struct uhci_hcd),
|
|
|
|
|
|
|
|
/* Generic hardware linkage */
|
|
|
|
.irq = uhci_irq,
|
2019-08-16 14:24:32 +08:00
|
|
|
.flags = HCD_DMA | HCD_USB11,
|
2011-05-06 18:00:15 +08:00
|
|
|
|
|
|
|
/* Basic lifecycle operations */
|
|
|
|
.reset = uhci_pci_init,
|
|
|
|
.start = uhci_start,
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
.pci_suspend = uhci_pci_suspend,
|
|
|
|
.pci_resume = uhci_pci_resume,
|
|
|
|
.bus_suspend = uhci_rh_suspend,
|
|
|
|
.bus_resume = uhci_rh_resume,
|
|
|
|
#endif
|
|
|
|
.stop = uhci_stop,
|
|
|
|
|
|
|
|
.urb_enqueue = uhci_urb_enqueue,
|
|
|
|
.urb_dequeue = uhci_urb_dequeue,
|
|
|
|
|
|
|
|
.endpoint_disable = uhci_hcd_endpoint_disable,
|
|
|
|
.get_frame_number = uhci_hcd_get_frame_number,
|
|
|
|
|
|
|
|
.hub_status_data = uhci_hub_status_data,
|
|
|
|
.hub_control = uhci_hub_control,
|
|
|
|
};
|
|
|
|
|
2013-12-03 07:27:58 +08:00
|
|
|
static const struct pci_device_id uhci_pci_ids[] = { {
|
2011-05-06 18:00:15 +08:00
|
|
|
/* handle any USB UHCI controller */
|
|
|
|
PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_UHCI, ~0),
|
|
|
|
}, { /* end: all zeroes */ }
|
|
|
|
};
|
|
|
|
|
|
|
|
MODULE_DEVICE_TABLE(pci, uhci_pci_ids);
|
|
|
|
|
2020-05-14 20:20:36 +08:00
|
|
|
static int uhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
|
|
|
|
{
|
2022-08-31 20:50:52 +08:00
|
|
|
return usb_hcd_pci_probe(dev, &uhci_driver);
|
2020-05-14 20:20:36 +08:00
|
|
|
}
|
|
|
|
|
2011-05-06 18:00:15 +08:00
|
|
|
static struct pci_driver uhci_pci_driver = {
|
2020-02-19 03:33:01 +08:00
|
|
|
.name = hcd_name,
|
2011-05-06 18:00:15 +08:00
|
|
|
.id_table = uhci_pci_ids,
|
|
|
|
|
2020-05-14 20:20:36 +08:00
|
|
|
.probe = uhci_pci_probe,
|
2011-05-06 18:00:15 +08:00
|
|
|
.remove = usb_hcd_pci_remove,
|
|
|
|
.shutdown = uhci_shutdown,
|
|
|
|
|
2013-09-25 03:45:25 +08:00
|
|
|
#ifdef CONFIG_PM
|
2011-05-06 18:00:15 +08:00
|
|
|
.driver = {
|
|
|
|
.pm = &usb_hcd_pci_pm_ops
|
|
|
|
},
|
|
|
|
#endif
|
|
|
|
};
|
2013-09-11 05:30:14 +08:00
|
|
|
|
|
|
|
MODULE_SOFTDEP("pre: ehci_pci");
|