23 Apr, 2020
1 commit
-
[ Upstream commit 696ac2e3bf267f5a2b2ed7d34e64131f2287d0ad ]
Similar to commit 0266d81e9bf5 ("acpi/processor: Prevent cpu hotplug
deadlock") except this is for acpi_processor_ffh_cstate_probe():"The problem is that the work is scheduled on the current CPU from the
hotplug thread associated with that CPU.It's not required to invoke these functions via the workqueue because
the hotplug thread runs on the target CPU already.Check whether current is a per cpu thread pinned on the target CPU and
invoke the function directly to avoid the workqueue."WARNING: possible circular locking dependency detected
------------------------------------------------------
cpuhp/1/15 is trying to acquire lock:
ffffc90003447a28 ((work_completion)(&wfc.work)){+.+.}-{0:0}, at: __flush_work+0x4c6/0x630but task is already holding lock:
ffffffffafa1c0e8 (cpuidle_lock){+.+.}-{3:3}, at: cpuidle_pause_and_lock+0x17/0x20which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (cpu_hotplug_lock){++++}-{0:0}:
cpus_read_lock+0x3e/0xc0
irq_calc_affinity_vectors+0x5f/0x91
__pci_enable_msix_range+0x10f/0x9a0
pci_alloc_irq_vectors_affinity+0x13e/0x1f0
pci_alloc_irq_vectors_affinity at drivers/pci/msi.c:1208
pqi_ctrl_init+0x72f/0x1618 [smartpqi]
pqi_pci_probe.cold.63+0x882/0x892 [smartpqi]
local_pci_probe+0x7a/0xc0
work_for_cpu_fn+0x2e/0x50
process_one_work+0x57e/0xb90
worker_thread+0x363/0x5b0
kthread+0x1f4/0x220
ret_from_fork+0x27/0x50-> #0 ((work_completion)(&wfc.work)){+.+.}-{0:0}:
__lock_acquire+0x2244/0x32a0
lock_acquire+0x1a2/0x680
__flush_work+0x4e6/0x630
work_on_cpu+0x114/0x160
acpi_processor_ffh_cstate_probe+0x129/0x250
acpi_processor_evaluate_cst+0x4c8/0x580
acpi_processor_get_power_info+0x86/0x740
acpi_processor_hotplug+0xc3/0x140
acpi_soft_cpu_online+0x102/0x1d0
cpuhp_invoke_callback+0x197/0x1120
cpuhp_thread_fun+0x252/0x2f0
smpboot_thread_fn+0x255/0x440
kthread+0x1f4/0x220
ret_from_fork+0x27/0x50other info that might help us debug this:
Chain exists of:
(work_completion)(&wfc.work) --> cpuhp_state-up --> cpuidle_lockPossible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(cpuidle_lock);
lock(cpuhp_state-up);
lock(cpuidle_lock);
lock((work_completion)(&wfc.work));*** DEADLOCK ***
3 locks held by cpuhp/1/15:
#0: ffffffffaf51ab10 (cpu_hotplug_lock){++++}-{0:0}, at: cpuhp_thread_fun+0x69/0x2f0
#1: ffffffffaf51ad40 (cpuhp_state-up){+.+.}-{0:0}, at: cpuhp_thread_fun+0x69/0x2f0
#2: ffffffffafa1c0e8 (cpuidle_lock){+.+.}-{3:3}, at: cpuidle_pause_and_lock+0x17/0x20Call Trace:
dump_stack+0xa0/0xea
print_circular_bug.cold.52+0x147/0x14c
check_noncircular+0x295/0x2d0
__lock_acquire+0x2244/0x32a0
lock_acquire+0x1a2/0x680
__flush_work+0x4e6/0x630
work_on_cpu+0x114/0x160
acpi_processor_ffh_cstate_probe+0x129/0x250
acpi_processor_evaluate_cst+0x4c8/0x580
acpi_processor_get_power_info+0x86/0x740
acpi_processor_hotplug+0xc3/0x140
acpi_soft_cpu_online+0x102/0x1d0
cpuhp_invoke_callback+0x197/0x1120
cpuhp_thread_fun+0x252/0x2f0
smpboot_thread_fn+0x255/0x440
kthread+0x1f4/0x220
ret_from_fork+0x27/0x50Signed-off-by: Qian Cai
Tested-by: Borislav Petkov
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Sasha Levin
17 Apr, 2020
1 commit
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commit 0ce792d660bda990c675eaf14ce09594a9b85cbf upstream.
The check carried out by acpi_any_gpe_status_set() is not precise enough
for the suspend-to-idle implementation in Linux and in some cases it is
necessary make it skip one GPE (specifically, the EC GPE) from the check
to prevent a race condition leading to a premature system resume from
occurring.For this reason, redefine acpi_any_gpe_status_set() to take the number
of a GPE to skip as an argument.Link: https://bugzilla.kernel.org/show_bug.cgi?id=206629
Tested-by: Ondřej Caletka
Cc: 5.4+ # 5.4+
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Greg Kroah-Hartman
05 Mar, 2020
1 commit
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commit 1dade3a7048ccfc675650cd2cf13d578b095e5fb upstream.
Sometimes it is useful to find the access_width field value in bytes and
not in bits so add a helper that can be used for this purpose.Suggested-by: Jean Delvare
Signed-off-by: Mika Westerberg
Reviewed-by: Jean Delvare
Cc: 4.16+ # 4.16+
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Greg Kroah-Hartman
29 Feb, 2020
1 commit
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commit 63fb9623427fbb44e3782233b6e4714057b76ff2 upstream.
Commit fdde0ff8590b ("ACPI: PM: s2idle: Prevent spurious SCIs from
waking up the system") overlooked the fact that fixed events can wake
up the system too and broke RTC wakeup from suspend-to-idle as a
result.Fix this issue by checking the fixed events in acpi_s2idle_wake() in
addition to checking wakeup GPEs and break out of the suspend-to-idle
loop if the status bits of any enabled fixed events are set then.Fixes: fdde0ff8590b ("ACPI: PM: s2idle: Prevent spurious SCIs from waking up the system")
Reported-and-tested-by: Chris Wilson
Cc: 5.4+ # 5.4+
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Linus Torvalds
Signed-off-by: Greg Kroah-Hartman
20 Feb, 2020
1 commit
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commit ea128834dd76f9a72a35d011c651fa96658f06a7 upstream.
Introduce a new helper function, acpi_any_gpe_status_set(), for
checking the status bits of all enabled GPEs in one go.It is needed to distinguish spurious SCIs from genuine ones when
deciding whether or not to wake up the system from suspend-to-idle.Cc: 5.4+ # 5.4+
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Greg Kroah-Hartman
18 Dec, 2019
1 commit
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commit a814dcc269830c9dbb8a83731cfc6fc5dd787f8d upstream.
We have a stub defined for the acpi_dev_get_first_match_dev() in acpi.h
for the case when CONFIG_ACPI=n.Moreover, acpi_dev_put(), counterpart function, is already placed under
CONFIG_ACPI.Thus, move acpi_dev_get_first_match_dev() under CONFIG_ACPI as well.
Fixes: 817b4d64da03 ("ACPI / utils: Introduce acpi_dev_get_first_match_dev() helper")
Reported-by: kbuild test robot
Signed-off-by: Andy Shevchenko
Reviewed-by: Mika Westerberg
Cc: 5.2+ # 5.2+
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Greg Kroah-Hartman
21 Oct, 2019
1 commit
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Replace the CPU device PM QoS used for the management of min and max
frequency constraints in cpufreq (and its users) with per-policy
frequency QoS to avoid problems with cpufreq policies covering
more then one CPU.Namely, a cpufreq driver is registered with the subsys interface
which calls cpufreq_add_dev() for each CPU, starting from CPU0, so
currently the PM QoS notifiers are added to the first CPU in the
policy (i.e. CPU0 in the majority of cases).In turn, when the cpufreq driver is unregistered, the subsys interface
doing that calls cpufreq_remove_dev() for each CPU, starting from CPU0,
and the PM QoS notifiers are only removed when cpufreq_remove_dev() is
called for the last CPU in the policy, say CPUx, which as a rule is
not CPU0 if the policy covers more than one CPU. Then, the PM QoS
notifiers cannot be removed, because CPUx does not have them, and
they are still there in the device PM QoS notifiers list of CPU0,
which prevents new PM QoS notifiers from being registered for CPU0
on the next attempt to register the cpufreq driver.The same issue occurs when the first CPU in the policy goes offline
before unregistering the driver.After this change it does not matter which CPU is the policy CPU at
the driver registration time and whether or not it is online all the
time, because the frequency QoS is per policy and not per CPU.Fixes: 67d874c3b2c6 ("cpufreq: Register notifiers with the PM QoS framework")
Reported-by: Dmitry Osipenko
Tested-by: Dmitry Osipenko
Reported-by: Sudeep Holla
Tested-by: Sudeep Holla
Diagnosed-by: Viresh Kumar
Link: https://lore.kernel.org/linux-pm/5ad2624194baa2f53acc1f1e627eb7684c577a19.1562210705.git.viresh.kumar@linaro.org/T/#md2d89e95906b8c91c15f582146173dce2e86e99f
Link: https://lore.kernel.org/linux-pm/20191017094612.6tbkwoq4harsjcqv@vireshk-i7/T/#m30d48cc23b9a80467fbaa16e30f90b3828a5a29b
Signed-off-by: Rafael J. Wysocki
Acked-by: Viresh Kumar
18 Sep, 2019
1 commit
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Pull ACPI updates from Rafael Wysocki:
"These include an ACPICA update (to upstream revision 20190816),
improvements of support for memory hot-add in the HMAT handling code
and some assorted fixes and cleanups.Specifics:
- Update the ACPICA code in the kernel to upstream revision 20190816
including:
* Internal limits change to support larger systems (Bob Moore).
* Macros clean up (Bob Moore).
* printf format string fixes (Bob Moore).
* Full deployment of the ACPI_PRINTF_LIKE macro (Bob Moore).
* Tools improvements (Bob Moore, Colin Ian King).
* Windows _OSI support fixes (Jung-uk Kim).- Improve memory hot-add support in the ACPI HMAT handling code (Dan
Williams, Keith Busch).- Fix the ACPI LPSS (Low-Power Subsystem) driver for Intel SoCs to
save and restore private registers during system-wide suspend and
resume on systems with the Lynxpoint PCH (Jarkko Nikula).- Convert the ACPI documentation related to LEDs to ReST (Sakari
Ailus).- Fix assorted issues and make assorted minor improvements in the
ACPI-related code (Al Stone, Andy Shevchenko, Jiri Slaby, Kelsey
Skunberg, Krzysztof Wilczynski, Liguang Zhang, Wenwen Wang,
YueHaibing)"* tag 'acpi-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (23 commits)
ACPI / PCI: fix acpi_pci_irq_enable() memory leak
ACPI: custom_method: fix memory leaks
ACPI: thermal: Remove redundant acpi_has_method() calls
ACPI / CPPC: do not require the _PSD method
ACPI: SBS: remove unused const variable 'SMBUS_PEC'
ACPI / LPSS: Save/restore LPSS private registers also on Lynxpoint
ACPI/PCI: Remove surplus parentheses from a return statement
ACPICA: Update version to 20190816.
ACPICA: Add "Windows 2019" string to _OSI support.
ACPICA: Differentiate Windows 8.1 from Windows 8.
ACPICA: Fully deploy ACPI_PRINTF_LIKE macro
ACPICA: iASL,acpi_dump: Improve y/n query
ACPICA: Fix issues with arg types within printf format strings
ACPICA: Macros: remove pointer math on a null pointer
ACPICA: Increase total number of possible Owner IDs
ACPICA: Debugger: remove redundant assignment on obj_desc
Documentation: ACPI: DSD: Convert LED documentation to ReST
ACPI / APEI: Release resources if gen_pool_add() fails
HMAT: Skip publishing target info for nodes with no online memory
HMAT: Register attributes for memory hot add
...
17 Sep, 2019
1 commit
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* pm-cpufreq: (36 commits)
cpufreq: Add qcs404 to cpufreq-dt-platdev blacklist
cpufreq: qcom: Add support for qcs404 on nvmem driver
cpufreq: qcom: Refactor the driver to make it easier to extend
cpufreq: qcom: Re-organise kryo cpufreq to use it for other nvmem based qcom socs
dt-bindings: opp: Add qcom-opp bindings with properties needed for CPR
dt-bindings: opp: qcom-nvmem: Support pstates provided by a power domain
Documentation: cpufreq: Update policy notifier documentation
cpufreq: Remove CPUFREQ_ADJUST and CPUFREQ_NOTIFY policy notifier events
sched/cpufreq: Align trace event behavior of fast switching
ACPI: cpufreq: Switch to QoS requests instead of cpufreq notifier
video: pxafb: Remove cpufreq policy notifier
video: sa1100fb: Remove cpufreq policy notifier
arch_topology: Use CPUFREQ_CREATE_POLICY instead of CPUFREQ_NOTIFY
cpufreq: powerpc_cbe: Switch to QoS requests for freq limits
cpufreq: powerpc: macintosh: Switch to QoS requests for freq limits
cpufreq: Print driver name if cpufreq_suspend() fails
cpufreq: mediatek: Add support for mt8183
cpufreq: mediatek: change to regulator_get_optional
cpufreq: imx-cpufreq-dt: Add i.MX8MN support
cpufreq: Use imx-cpufreq-dt for i.MX8MN's speed grading
...
28 Aug, 2019
1 commit
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The cpufreq core now takes the min/max frequency constraints via QoS
requests and the CPUFREQ_ADJUST notifier shall get removed later on.Switch over to using the QoS request for maximum frequency constraint
for acpi driver.Signed-off-by: Viresh Kumar
Signed-off-by: Rafael J. Wysocki
21 Aug, 2019
6 commits
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ACPICA commit db29ce57ced39ec610667c4b946bc3bb38bc8efa
Version 20190816.
Link: https://github.com/acpica/acpica/commit/db29ce57
Signed-off-by: Bob Moore
Signed-off-by: Erik Schmauss
Signed-off-by: Rafael J. Wysocki -
ACPICA commit 32fffb242800b0202986e86d9b0e16f88a23de66
Link: https://github.com/acpica/acpica/commit/32fffb24
Signed-off-by: Jung-uk Kim
Signed-off-by: Bob Moore
Signed-off-by: Erik Schmauss
Signed-off-by: Rafael J. Wysocki -
ACPICA commit 66db7b38f61e63f11e48a0ea993d92b12e0a17ca
Link: https://github.com/acpica/acpica/commit/66db7b38
Signed-off-by: Jung-uk Kim
Signed-off-by: Bob Moore
Signed-off-by: Erik Schmauss
Signed-off-by: Rafael J. Wysocki -
ACPICA commit d06def132a8852d02c9c7fee60f17b2011066e8e
Macro was not being used across all "printf-like" functions.
Also, clean up all calls to such functions now that they are
analyzed by the compiler (gcc). Both in 32-bit mode and 64-bit
mode.Link: https://github.com/acpica/acpica/commit/d06def13
Signed-off-by: Bob Moore
Signed-off-by: Erik Schmauss
Signed-off-by: Rafael J. Wysocki -
ACPICA commit 02bbca5070e42d298c9b824300aa0eb8a082d797
Causes warnings on some compilers and/or tools.
Changed ACPI_TO_POINTER to use ACPI_CAST_PTR instead of using
arithmetic.Link: https://github.com/acpica/acpica/commit/02bbca50
Reported-by: Qian Cai
Signed-off-by: Bob Moore
Signed-off-by: Erik Schmauss
Signed-off-by: Rafael J. Wysocki -
ACPICA commit 1f1652dad88b9d767767bc1f7eb4f7d99e6b5324
From 255 to 4095 possible IDs.
Link: https://github.com/acpica/acpica/commit/1f1652da
Reported-by: Hedi Berriche
Signed-off-by: Bob Moore
Signed-off-by: Erik Schmauss
Signed-off-by: Rafael J. Wysocki
23 Jul, 2019
1 commit
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In some cases it is useful to know whether or not the
acpi_ev_detect_gpe() called by acpi_dispatch_gpe() has found
the GPE to be active, so return the return value of it (whose
data type is u32) from latter.Signed-off-by: Rafael J. Wysocki
Acked-by: Thomas Gleixner
10 Jul, 2019
2 commits
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Pull Documentation updates from Jonathan Corbet:
"It's been a relatively busy cycle for docs:- A fair pile of RST conversions, many from Mauro. These create more
than the usual number of simple but annoying merge conflicts with
other trees, unfortunately. He has a lot more of these waiting on
the wings that, I think, will go to you directly later on.- A new document on how to use merges and rebases in kernel repos,
and one on Spectre vulnerabilities.- Various improvements to the build system, including automatic
markup of function() references because some people, for reasons I
will never understand, were of the opinion that
:c:func:``function()`` is unattractive and not fun to type.- We now recommend using sphinx 1.7, but still support back to 1.4.
- Lots of smaller improvements, warning fixes, typo fixes, etc"
* tag 'docs-5.3' of git://git.lwn.net/linux: (129 commits)
docs: automarkup.py: ignore exceptions when seeking for xrefs
docs: Move binderfs to admin-guide
Disable Sphinx SmartyPants in HTML output
doc: RCU callback locks need only _bh, not necessarily _irq
docs: format kernel-parameters -- as code
Doc : doc-guide : Fix a typo
platform: x86: get rid of a non-existent document
Add the RCU docs to the core-api manual
Documentation: RCU: Add TOC tree hooks
Documentation: RCU: Rename txt files to rst
Documentation: RCU: Convert RCU UP systems to reST
Documentation: RCU: Convert RCU linked list to reST
Documentation: RCU: Convert RCU basic concepts to reST
docs: filesystems: Remove uneeded .rst extension on toctables
scripts/sphinx-pre-install: fix out-of-tree build
docs: zh_CN: submitting-drivers.rst: Remove a duplicated Documentation/
Documentation: PGP: update for newer HW devices
Documentation: Add section about CPU vulnerabilities for Spectre
Documentation: platform: Delete x86-laptop-drivers.txt
docs: Note that :c:func: should no longer be used
... -
Pull ACPI updates from Rafael Wysocki:
"These update the ACPICA code in the kernel to upstream revision
20190703, fix up the handling of GPEs in ACPICA, allow some more ACPI
code to be built on ARM64 platforms, allow BGRT to be overridden, fix
minor issues and clean up assorted pieces of ACPI code.Specifics:
- Update the ACPICA code in the kernel to upstream revision 20190703
including:
- Initial/default namespace creation simplification (Bob Moore).
- Object initialization sequence update (Bob Moore).
- Removal of legacy module-level (dead) code (Erik Schmauss).
- Table load object initialization update (Erik Schmauss,
Nikolaus Voss).- Fix GPE enabling issue in ACPICA causing premature wakeups from
suspend-to-idle to occur (Rafael Wysocki).- Allow ACPI AC and battery drivers to be built on non-X86 (Ard
Biesheuvel).- Fix address space handler removal in the ACPI PMIC driver for Intel
platforms (Andy Shevchenko).- Allow BGRT to be overridden via initrd or configfs (Andrea
Oliveri).- Fix object resolution on table loads via configfs (Nikolaus Voss).
- Clean up assorted pieces of ACPI code and tools (Colin Ian King,
Liguang Zhang, Masahiro Yamada).- Fix documentation build warning, convert the extcon document to
ReST and add it to the ACPI documentation (Mauro Carvalho Chehab,
Qian Cai)"* tag 'acpi-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / APEI: Remove needless __ghes_check_estatus() calls
ACPICA: Update version to 20190703
ACPICA: Update table load object initialization
ACPICA: Update for object initialization sequence
ACPICA: remove legacy module-level code due to deprecation
ACPICA: Namespace: simplify creation of the initial/default namespace
ACPI / PMIC: intel: Drop double removal of address space handler
ACPI: APD: remove redundant assignment to pointer clk
docs: extcon: convert it to ReST and move to ACPI dir
ACPI: Make AC and battery drivers available on !X86
ACPICA: Clear status of GPEs on first direct enable
ACPI: configfs: Resolve objects on host-directed table loads
ACPI: tables: Allow BGRT to be overridden
ACPI: OSL: Make a W=1 kernel-doc warning go away
ACPI: tools: Exclude tools/* from .gitignore patterns
08 Jul, 2019
3 commits
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* acpica:
ACPICA: Update version to 20190703
ACPICA: Update table load object initialization
ACPICA: Update for object initialization sequence
ACPICA: remove legacy module-level code due to deprecation
ACPICA: Namespace: simplify creation of the initial/default namespace
ACPICA: Clear status of GPEs on first direct enable -
* acpi-tables:
ACPI: configfs: Resolve objects on host-directed table loads
ACPI: tables: Allow BGRT to be overridden* acpi-osl:
ACPI: OSL: Make a W=1 kernel-doc warning go away* acpi-misc:
ACPI: Make AC and battery drivers available on !X86* acpi-tools:
ACPI: tools: Exclude tools/* from .gitignore patterns -
* acpi-pm:
ACPI: PM: Make acpi_sleep_state_supported() non-static
ACPI: PM: Allow transitions to D0 to occur in special cases
ACPI: PM: Avoid evaluating _PS3 on transitions from D3hot to D3cold
ACPI / sleep: Switch to use acpi_dev_get_first_match_dev()
ACPI / LPIT: Correct LPIT end address for lpit_process()* pm-pci:
ACPI: PM: Unexport acpi_device_get_power()
PCI: PM/ACPI: Refresh all stale power state data in pci_pm_complete()
PCI / ACPI: Add _PR0 dependent devices
ACPI / PM: Introduce concept of a _PR0 dependent device
PCI / ACPI: Use cached ACPI device state to get PCI device power state
PCI: Do not poll for PME if the device is in D3cold
PCI: Add missing link delays required by the PCIe spec
PCI: PM: Replace pci_dev_keep_suspended() with two functions
PCI: PM: Avoid resuming devices in D3hot during system suspend
06 Jul, 2019
1 commit
-
With some upcoming patches to save/restore the Hyper-V drivers related
states, a Linux VM running on Hyper-V will be able to hibernate. When
a Linux VM hibernates, unluckily we must disable the memory hot-add/remove
and balloon up/down capabilities in the hv_balloon driver
(drivers/hv/hv_balloon.c), because these can not really work according to
the design of the related back-end driver on the host.By default, Hyper-V does not enable the virtual ACPI S4 state for a VM;
on recent Hyper-V hosts, the administrator is able to enable the virtual
ACPI S4 state for a VM, so we hope to use the presence of the virtual ACPI
S4 state as a hint for hv_balloon to disable the aforementioned
capabilities. In this way, hibernation will work more reliably, from the
user's perspective.By marking acpi_sleep_state_supported() non-static, we'll be able to
implement a hv_is_hibernation_supported() API in the always-built-in
module arch/x86/hyperv/hv_init.c, and the API will be called by hv_balloon.Signed-off-by: Dexuan Cui
Signed-off-by: Rafael J. Wysocki
04 Jul, 2019
2 commits
-
Using acpi_device_get_power() outside of ACPI device initialization
and ACPI sysfs is problematic due to the way in which power resources
are handled by it, so unexport it and add a paragraph explaining the
pitfalls to its kerneldoc comment.Signed-off-by: Rafael J. Wysocki
Reviewed-by: Mika Westerberg -
ACPICA commit 450ffd8b9c100db561ecf23063620cb107d68c30
Version 20190703.
Link: https://github.com/acpica/acpica/commit/450ffd8b
Signed-off-by: Bob Moore
Signed-off-by: Erik Schmauss
Signed-off-by: Rafael J. Wysocki
27 Jun, 2019
1 commit
-
If there are shared power resources between otherwise unrelated devices
turning them on causes the other devices sharing them to be powered up
as well. In case of PCI devices go into D0uninitialized state meaning
that if they were configured to trigger wake that configuration is lost
at this point.For this reason introduce a concept of "_PR0 dependent device" that can
be added to any ACPI device that has power resources. The dependent
device will be included in a list of dependent devices for all power
resources returned by the ACPI device's _PR0 (assuming it has one).
Whenever a power resource having dependent devices is turned physically
on (its _ON method is called) we runtime resume all of them to allow
their driver or in case of PCI the PCI core to re-initialize the device
and its wake configuration.This adds two functions that can be used to add and remove these
dependent devices. Note the dependent device does not necessary need
share power resources so this functionality can be used to add "software
dependencies" as well if needed.Signed-off-by: Mika Westerberg
Signed-off-by: Rafael J. Wysocki
15 Jun, 2019
1 commit
-
We need to pick up post-rc1 changes to various document files so they don't
get lost in Mauro's massive RST conversion push.
09 Jun, 2019
1 commit
-
Mostly due to x86 and acpi conversion, several documentation
links are still pointing to the old file. Fix them.Signed-off-by: Mauro Carvalho Chehab
Reviewed-by: Wolfram Sang
Reviewed-by: Sven Van Asbroeck
Reviewed-by: Bhupesh Sharma
Acked-by: Mark Brown
Signed-off-by: Jonathan Corbet
05 Jun, 2019
2 commits
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Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation version 2 of the licenseextracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 315 file(s).
Signed-off-by: Thomas Gleixner
Reviewed-by: Allison Randal
Reviewed-by: Armijn Hemel
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de
Signed-off-by: Greg Kroah-Hartman -
Based on 1 normalized pattern(s):
this file is released under the gplv2
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 68 file(s).
Signed-off-by: Thomas Gleixner
Reviewed-by: Armijn Hemel
Reviewed-by: Allison Randal
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190114.292346262@linutronix.de
Signed-off-by: Greg Kroah-Hartman
04 Jun, 2019
1 commit
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It appears that kernel-doc does not understand the return type *__ref,
drivers/acpi/osl.c:306: warning: cannot understand function prototype:
'void __iomem *__ref acpi_os_map_iomem(acpi_physical_address phys,
acpi_size size)Signed-off-by: Qian Cai
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki
31 May, 2019
2 commits
-
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation this program is
distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more detailsextracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 655 file(s).
Signed-off-by: Thomas Gleixner
Reviewed-by: Allison Randal
Reviewed-by: Kate Stewart
Reviewed-by: Richard Fontana
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman -
Based on 3 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more detailsthis program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version [author] [kishon] [vijay] [abraham]
[i] [kishon]@[ti] [com] this program is distributed in the hope that
it will be useful but without any warranty without even the implied
warranty of merchantability or fitness for a particular purpose see
the gnu general public license for more detailsthis program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version [author] [graeme] [gregory]
[gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
[kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
[hk] [hemahk]@[ti] [com] this program is distributed in the hope
that it will be useful but without any warranty without even the
implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more detailsextracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 1105 file(s).
Signed-off-by: Thomas Gleixner
Reviewed-by: Allison Randal
Reviewed-by: Richard Fontana
Reviewed-by: Kate Stewart
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman
15 May, 2019
2 commits
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Pull more ACPI updates from Rafael Wysocki:
"These fix two regressions introduced during the 5.0 cycle, in ACPICA
and in device PM, cause the values returned by _ADR to be stored in 64
bits and fix two ACPI documentation issues.Specifics:
- Update the ACPICA code in the kernel to upstream revision 20190509
including one regression fix:
* Prevent excessive ACPI debug messages from being printed by
moving the ACPI_DEBUG_DEFAULT definition to the right place
(Erik Schmauss).- Set the enable_for_wake bits for wakeup GPEs during suspend to idle
to allow acpi_enable_all_wakeup_gpes() to enable them as
aproppriate and make wakeup devices sighaling events through ACPI
GPEs work with suspend-to-idle again (Rajat Jain).- Use 64 bits to store the return values of _ADR which are assumed to
be 64-bit by some bus specs and may contain nonzero bits in the
upper 32 bits part for some devices (Pierre-Louis Bossart).- Fix two minor issues with the ACPI documentation (Sakari Ailus)"
* tag 'acpi-5.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: PM: Set enable_for_wake for wakeup GPEs during suspend-to-idle
Documentation: ACPI: Direct references are allowed to devices only
Documentation: ACPI: Use tabs for graph ASL indentation
ACPICA: Update version to 20190509
ACPICA: Linux: move ACPI_DEBUG_DEFAULT flag out of ifndef
ACPI: bus: change _ADR representation to 64 bits -
* acpi-bus:
ACPI: bus: change _ADR representation to 64 bits* acpi-doc:
Documentation: ACPI: Direct references are allowed to devices only
Documentation: ACPI: Use tabs for graph ASL indentation* acpi-pm:
ACPI: PM: Set enable_for_wake for wakeup GPEs during suspend-to-idle
13 May, 2019
2 commits
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ACPICA commit 36449fa1dc914113f2b096622d22c2621fd22861
Version 20190509.
Link: https://github.com/acpica/acpica/commit/36449fa1
Signed-off-by: Bob Moore
Signed-off-by: Erik Schmauss
Signed-off-by: Rafael J. Wysocki -
ACPICA commit c14f17fa0acf8c93497ce04b9a7f4ada51b69383
This flag should not be included in #ifndef CONFIG_ACPI. It should be
used unconditionally.Link: https://github.com/acpica/acpica/commit/c14f17fa
Fixes: aa9aaa4d61c0 ("ACPI: use different default debug value than ACPICA")
Reported-by: Gabriel C
Tested-by: Gabriel C
Signed-off-by: Erik Schmauss
Signed-off-by: Bob Moore
Cc: 5.1+ 5.1+
Signed-off-by: Rafael J. Wysocki
10 May, 2019
1 commit
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Standards such as the MIPI DisCo for SoundWire 1.0 specification
assume the _ADR field is 64 bits._ADR is defined as an "Integer" represented as 64 bits since ACPI 2.0
released in 2002. The low levels already use _ADR as 64 bits, e.g. in
struct acpi_device_info.This patch bumps the representation used for sysfs to 64 bits. To
avoid any compatibility/ABI issues, the printf format is only extended
to 16 characters when the actual _ADR value exceeds the 32 bit
maximum.Example with a SoundWire device, the results show the complete
vendorID and linkID which were omitted before:Before:
$ more /sys/bus/acpi/devices/device\:38/adr
0x5d070000
After:
$ more /sys/bus/acpi/devices/device\:38/adr
0x000010025d070000Signed-off-by: Pierre-Louis Bossart
[ rjw: Replace 0xFFFFFFFF with U32_MAX, clean up subject ]
Signed-off-by: Rafael J. Wysocki
08 May, 2019
1 commit
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Pull driver core/kobject updates from Greg KH:
"Here is the "big" set of driver core patches for 5.2-rc1There are a number of ACPI patches in here as well, as Rafael said
they should go through this tree due to the driver core changes they
required. They have all been acked by the ACPI developers.There are also a number of small subsystem-specific changes in here,
due to some changes to the kobject core code. Those too have all been
acked by the various subsystem maintainers.As for content, it's pretty boring outside of the ACPI changes:
- spdx cleanups
- kobject documentation updates
- default attribute groups for kobjects
- other minor kobject/driver core fixesAll have been in linux-next for a while with no reported issues"
* tag 'driver-core-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (47 commits)
kobject: clean up the kobject add documentation a bit more
kobject: Fix kernel-doc comment first line
kobject: Remove docstring reference to kset
firmware_loader: Fix a typo ("syfs" -> "sysfs")
kobject: fix dereference before null check on kobj
Revert "driver core: platform: Fix the usage of platform device name(pdev->name)"
init/config: Do not select BUILD_BIN2C for IKCONFIG
Provide in-kernel headers to make extending kernel easier
kobject: Improve doc clarity kobject_init_and_add()
kobject: Improve docs for kobject_add/del
driver core: platform: Fix the usage of platform device name(pdev->name)
livepatch: Replace klp_ktype_patch's default_attrs with groups
cpufreq: schedutil: Replace default_attrs field with groups
padata: Replace padata_attr_type default_attrs field with groups
irqdesc: Replace irq_kobj_type's default_attrs field with groups
net-sysfs: Replace ktype default_attrs field with groups
block: Replace all ktype default_attrs with groups
samples/kobject: Replace foo_ktype's default_attrs field with groups
kobject: Add support for default attribute groups to kobj_type
driver core: Postpone DMA tear-down until after devres release for probe failure
...
06 May, 2019
1 commit
-
* acpi-utils:
gpio: merrifield: Fix build err without CONFIG_ACPI
ACPI / utils: Remove deprecated function since no user left
ASoC: Intel: cht_bsw_rt5672: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: cht_bsw_rt5645: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: bytcr_rt5651: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: bytcr_rt5640: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: bytcht_es8316: Convert to use acpi_dev_get_first_match_dev()
ASoC: Intel: bytcht_da7213: Convert to use acpi_dev_get_first_match_dev()
gpio: merrifield: Convert to use acpi_dev_get_first_match_dev()
extcon: axp288: Convert to use acpi_dev_get_first_match_dev()
ACPI / utils: Introduce acpi_dev_get_first_match_dev() helper* acpi-video:
ACPI: video: Use vendor backlight on Sony VPCEH3U1E* acpi-soc:
ACPI / LPSS: Use acpi_lpss_* instead of acpi_subsys_* functions for hibernate* acpi-button:
ACPI: button: reinitialize button state upon resume