02 Nov, 2017
1 commit
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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
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
28 Jun, 2017
1 commit
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The run_wake flag in struct acpi_device_wakeup_flags stores the
information on whether or not the device can generate wakeup
signals at run time, but in ACPI that really is equivalent to
being able to generate wakeup signals at all.In fact, run_wake will always be set after successful executeion of
acpi_setup_gpe_for_wake(), but if that fails, the device will not be
able to use a wakeup GPE at all, so it won't be able to wake up the
systems from sleep states too. Hence, run_wake actually means that
the device is capable of triggering wakeup and so it is equivalent
to the valid flag.For this reason, drop run_wake from struct acpi_device_wakeup_flags
and make sure that the valid flag is only set if
acpi_setup_gpe_for_wake() has been successful.Signed-off-by: Rafael J. Wysocki
Reviewed-by: Mika Westerberg
Acked-by: Bjorn Helgaas
25 Dec, 2016
1 commit
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This was entirely automated, using the script by Al:
PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*'
sed -i -e "s!$PATT!#include !" \
$(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)to do the replacement at the end of the merge window.
Requested-by: Al Viro
Signed-off-by: Linus Torvalds
15 Sep, 2015
1 commit
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This patch changes the type of the return value of the acpi_sleep_proc_init()
method to be void, as this method never fails and its return value is never
used.Signed-off-by: Rami Rosen \
[ rjw : Fixed up the static inline stub ]
Signed-off-by: Rafael J. Wysocki
05 Feb, 2014
1 commit
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We already verified that "ldev" was non-NULL earlier and also we
dereference again without checking a three lines later.Signed-off-by: Dan Carpenter
Signed-off-by: Rafael J. Wysocki
06 Jan, 2014
1 commit
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Include appropriate header file internal.h in proc.c because function
acpi_sleep_proc_init() has its prototype declaration in internal.h.This eliminates the following warning in proc.c:
drivers/acpi/proc.c:148:12: warning: no previous prototype for ‘acpi_sleep_proc_init’ [-Wmissing-prototypes]Signed-off-by: Rashika Kheria
Reviewed-by: Josh Triplett
Signed-off-by: Rafael J. Wysocki
07 Dec, 2013
1 commit
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Replace direct inclusions of , and
, which are incorrect, with
inclusions and remove some inclusions of those files that aren't
necessary.First of all, , and
should not be included directly from any files that are built for
CONFIG_ACPI unset, because that generally leads to build warnings about
undefined symbols in !CONFIG_ACPI builds. For CONFIG_ACPI set,
includes those files and for CONFIG_ACPI unset it
provides stub ACPI symbols to be used in that case.Second, there are ordering dependencies between those files that always
have to be met. Namely, it is required that be included
prior to so that the acpi_pci_root declarations the
latter depends on are always there. And which provides
basic ACPICA type declarations should always be included prior to any other
ACPI headers in CONFIG_ACPI builds. That also is taken care of including
as appropriate.Signed-off-by: Lv Zheng
Cc: Greg Kroah-Hartman
Cc: Matthew Garrett
Cc: Tony Luck
Cc: "H. Peter Anvin"
Acked-by: Bjorn Helgaas (drivers/pci stuff)
Acked-by: Konrad Rzeszutek Wilk (Xen stuff)
Signed-off-by: Rafael J. Wysocki
12 Oct, 2013
1 commit
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Alarm proc file provides the info and control of RTC-CMOS alarm and
RTC CMOS driver provides wakealarm sysfs attribute for the same
purpose. The alarm file isn't compiled into kernel when RTC CMOS
driver is selected. The driver is default to be selected for x86
platform. So alarm file is default not to include. This patch is
to remove it to prepare remove /proc/acpi directory.Signed-off-by: Lan Tianyu
Signed-off-by: Rafael J. Wysocki
06 Aug, 2013
1 commit
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The list of physical devices corresponding to an ACPI device
object is walked by acpi_system_wakeup_device_seq_show() and
physical_device_enable_wakeup() without taking that object's
physical_node_lock mutex. Since each of those functions may be
run at any time as a result of a user space action, the lack of
appropriate locking in them may lead to a kernel crash if that
happens during device hot-add or hot-remove involving the device
object in question.Fix the issue by modifying acpi_system_wakeup_device_seq_show() and
physical_device_enable_wakeup() to use physical_node_lock as
appropriate.Signed-off-by: Rafael J. Wysocki
Cc: All
10 Apr, 2013
1 commit
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The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data. Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.Signed-off-by: Al Viro
28 Jan, 2013
1 commit
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Fix /proc/acpi/wakeup for devices without bus or parent
This patch fixes printing the wakeup status for devices without a bus
or parent, such as laptop lid switches and sleep buttons. These devices
have an empty physical_node_list, because acpi_bind_one is never run
for them.[rjw: White space and coding style.]
Signed-off-by: Andreas Fleig
Signed-off-by: Rafael J. Wysocki
23 Nov, 2012
1 commit
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The LEN variable is unsigned, therefore checking whether it is less than 0 is
useless. Also drop the LEN variable, since the COUNT parameter can be used
instead.[rjw: Changed the subject.]
Signed-off-by: Cyril Roelandt
Signed-off-by: Rafael J. Wysocki
22 Sep, 2012
1 commit
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A USB port's position and connectability can't be identified on some boards
via USB hub registers. ACPI _UPC and _PLD can help to resolve this issue
and so it is necessary to bind USB with ACPI. This patch is to allow ACPI
binding with USB-3.0 hub.Current ACPI only can bind one struct-device to one ACPI device node.
This can not work with USB-3.0 hub, because the USB-3.0 hub has two logical
devices. Each works for USB-2.0 and USB-3.0 devices. In the Linux USB subsystem,
those two logical hubs are treated as two seperate devices that have two struct
devices. But in the ACPI DSDT, these two logical hubs share one ACPI device
node. So there is a requirement to bind multi struct-devices to one ACPI
device node. This patch is to resolve such problem.Following is the ACPI device nodes' description under xhci hcd.
Device (XHC)
Device (RHUB)
Device (HSP1)
Device (HSP2)
Device (HSP3)
Device (HSP4)
Device (SSP1)
Device (SSP2)
Device (SSP3)
Device (SSP4)Topology in the Linux
device XHC
USB-2.0 logical hub USB-3.0 logical hub
HSP1 SSP1
HSP2 SSP2
HSP3 SSP3
HSP4 SSP4This patch also modifies the output of /proc/acpi/wakeup. One ACPI node
can be associated with multiple devices:XHC S4 *enabled pci:0000:00:14.0
RHUB S0 disabled usb:usb1
disabled usb:usb2Signed-off-by: Lan Tianyu
Acked-by: Sarah Sharp
Signed-off-by: Len Brown
01 Nov, 2011
1 commit
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These files were relying on module.h to come in via the path
in an include/acpi header file, but we don't want to have
instances of module.h being included from include/* files
if it can be avoided. Have the files include export.h instead.Signed-off-by: Paul Gortmaker
07 Jan, 2011
2 commits
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There are ACPI devices (buttons and the laptop lid) that can wake up
the system from sleep states and have no "physical" companion
devices. The ACPI subsystem uses two flags, wakeup.state.enabled and
wakeup.flags.always_enabled, for handling those devices, but they
are not accessible through the standard device wakeup infrastructure.
User space can only control them via the /proc/acpi/wakeup interface
that is not really convenient (e.g. the way in which devices are
enabled to wake up the system is not portable between different
systems, because it requires one to know the devices' "names" used in
the system's ACPI tables).To address this problem, use standard device wakeup flags instead of
the special ACPI flags for handling those devices. In particular,
use device_set_wakeup_capable() to mark the ACPI wakeup devices
during initialization and use device_set_wakeup_enable() to allow
or disallow them to wake up the system from sleep states. Rework
the /proc/acpi/wakeup interface to take these changes into account.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Len Brown -
If a device is enabled to wake up the system from sleep states via
/proc/acpi/wakeup and there are other devices associated with the
same wakeup GPE, all of these devices are automatically enabled to
wake up the system. This isn't correct, because the fact the GPE is
shared need not imply that wakeup power has to be enabled for all the
devices at the same time (i.e. it is possible that one device will
have its wakeup power enabled and it will wake up the system from a
sleep state if the shared wakeup GPE is enabled, while another device
having its wakeup power disabled will not wake up the system even
though the GPE is enabled). Rework acpi_system_write_wakeup_device()
so that it only enables wakeup for one device at a time.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Len Brown
15 Aug, 2010
1 commit
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Rmove deprecated ACPI procfs I/F, including
/proc/acpi/debug_layer
/proc/acpi/debug_level
/proc/acpi/info
/proc/acpi/dsdt
/proc/acpi/fadt
/proc/acpi/sleepbecause the sysfs I/F is already available
and has been working well for years.Signed-off-by: Zhang Rui
Signed-off-by: Len Brown
04 Feb, 2010
1 commit
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Some string messages misspell "separate"; this fixes them. No change in
functionality.Signed-off-by: Adam Buchbinder
Signed-off-by: Jiri Kosina
28 Oct, 2009
1 commit
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proc.c and video.c are a bit sloppy around types and style,
confusing gcc for a new feature that'll be in 2.6.33 and will
cause a warning on the current code.This patch changes
if (foo + 1 > sizeof bar)
into
if (foo >= sizeof(bar))
which is more kernel-style.
it also changes a variable in proc.c to unsigned; it gets assigned
a value from an unsigned type, and is then only compared for > not
for negative, so using unsigned is just outright the right typeSigned-off-by: Arjan van de Ven
Signed-off-by: Len Brown
03 Oct, 2009
1 commit
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The ACPI /proc write() code takes an unsigned length argument like any write()
function, but then assigned it to a *signed* integer called "len".
Only after this is a sanity check for len done to make it not larger than 4.Due to the type change a len < 0 is in principle also possible; this patch
adds a check for this.Signed-off-by: Arjan van de Ven
Signed-off-by: Len Brown
07 Apr, 2009
1 commit
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Convert acpi_device_lock to a mutex to avoid
a potential race upon access to /proc/acpi/wakeupDelete the lock entirely in wakeup.c
since it is not necessary (and can not sleep)Found-by: Linus Torvalds
Signed-off-by: Shaohua Li
Signed-off-by: Len Brown
28 Mar, 2009
1 commit
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This patch makes acpi_init() call acpi_sleep_proc_init() directly.
Previously, acpi_sleep_proc_init() was a late_initcall (sequence 7),
apparently to make sure that the /proc hierarchy already exists:2003/02/13 12:38:03-06:00 mochel
acpi sleep: demote sleep proc file creation.- Make acpi_sleep_proc_init() a late_initcall(), and not called from
acpi_sleep_init(). This guarantees that the acpi proc hierarchy is at
least there when we create the dang file.This should no longer be an issue because acpi_bus_init() (called early
in acpi_init()) creates acpi_root_dir (/proc/acpi).Signed-off-by: Bjorn Helgaas
Signed-off-by: Len Brown
09 Jan, 2009
2 commits
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also, delete sleep/ and delete ACPI_CFLAGS from Makefile
Signed-off-by: Len Brown
