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* acpi-tables:
ACPI: add NFIT and HMAT to the initrd override list
* acpi-cppc:
ACPI / CPPC: Update all pr_(debug/err) messages to log the susbspace id
* acpi-pci:
ACPI / PCI: pci_link: Allow the absence of _PRS and change log level
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* acpi-battery:
Revert "ACPI: battery: Add the ThinkPad "Not Charging" quirk"
ACPI: battery: do not export degraded capacity values over 100
ACPI: battery: make function __battery_hook_unregister() static
ACPI: battery: Add the ThinkPad "Not Charging" quirk
thinkpad_acpi: Add support for battery thresholds
power: add to_power_supply macro to the API
battery: Add the battery hooking API
* acpi-doc:
ACPI: sysfs: Update device object sysfs documentation
* acpi-pmic:
ACPI / PMIC: Replace license boilerplate with SPDX license identifier
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* acpica: (21 commits)
ACPICA: Update version to 20180313
ACPICA: Cleanup/simplify module-level code support
ACPICA: Events: add a return on failure from acpi_hw_register_read
ACPICA: adding SPDX headers
ACPICA: Rename a global for clarity, no functional change
ACPICA: macros: fix ACPI_ERROR_NAMESPACE macro
ACPICA: Change a compile-time option to a runtime option
ACPICA: Remove calling of _STA from acpi_get_object_info()
ACPICA: AML Debug Object: Don't ignore output of zero-length strings
ACPICA: Fix memory leak on unusual memory leak
ACPICA: Events: Dispatch GPEs after enabling for the first time
ACPICA: Events: Add parallel GPE handling support to fix potential redundant _Exx evaluations
ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume
ACPICA: acpi: acpica: fix acpi operand cache leak in nseval.c
ACPICA: Update version to 20180209
ACPICA: Add option to disable Package object name resolution errors
ACPICA: Integrate package handling with module-level code
ACPICA: Revert "Fix for implicit result conversion for the To____ functions"
ACPICA: Update for some debug output. No functional change
ACPICA: Update error message, no functional change
...
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Fix once per second (round_robin_time) memory leak of about 1 KB in
each acpi_pad kernel idling thread that is activated.
Found by testing with kmemleak.
Signed-off-by: Lenny Szubowicz <lszubowi@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"Two regression fixes, two bug fixes for older issues, two fixes for
new functionality added this cycle that have userspace ABI concerns,
and a small cleanup. These have appeared in a linux-next release and
have a build success report from the 0day robot.
* The 4.16 rework of altmap handling led to some configurations
leaking page table allocations due to freeing from the altmap
reservation rather than the page allocator.
The impact without the fix is leaked memory and a WARN() message
when tearing down libnvdimm namespaces. The rework also missed a
place where error handling code needed to be removed that can lead
to a crash if devm_memremap_pages() fails.
* acpi_map_pxm_to_node() had a latent bug whereby it could
misidentify the closest online node to a given proximity domain.
* Block integrity handling was reworked several kernels back to allow
calling add_disk() after setting up the integrity profile.
The nd_btt and nd_blk drivers are just now catching up to fix
automatic partition detection at driver load time.
* The new peristence_domain attribute, a platform indicator of
whether cpu caches are powerfail protected for example, is meant to
be a single value enum and not a set of flags.
This oversight was caught while reviewing new userspace code in
libndctl to communicate the attribute.
Fix this new enabling up so that we are not stuck with an unwanted
userspace ABI"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm, nfit: fix persistence domain reporting
libnvdimm, region: hide persistence_domain when unknown
acpi, numa: fix pxm to online numa node associations
x86, memremap: fix altmap accounting at free
libnvdimm: remove redundant assignment to pointer 'dev'
libnvdimm, {btt, blk}: do integrity setup before add_disk()
kernel/memremap: Remove stale devres_free() call
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* acpi-wdat:
ACPI / watchdog: Fix off-by-one error at resource assignment
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The persistence domain is a point in the platform where once writes
reach that destination the platform claims it will make them persistent
relative to power loss. In the ACPI NFIT this is currently communicated
as 2 bits in the "NFIT - Platform Capabilities Structure". The bits
comprise a hierarchy, i.e. bit0 "CPU Cache Flush to NVDIMM Durability on
Power Loss Capable" implies bit1 "Memory Controller Flush to NVDIMM
Durability on Power Loss Capable".
Commit 96c3a239054a "libnvdimm: expose platform persistence attr..."
shows the persistence domain as flags, but it's really an enumerated
hierarchy.
Fix this newly introduced user ABI to show the closest available
persistence domain before userspace develops dependencies on seeing, or
needing to develop code to tolerate, the raw NFIT flags communicated
through the libnvdimm-generic region attribute.
Fixes: 96c3a239054a ("libnvdimm: expose platform persistence attr...")
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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The resource allocation in WDAT watchdog has off-one-by error, it sets
one byte more than the actual end address. This may eventually lead
to unexpected resource conflicts.
Fixes: 058dfc767008 (ACPI / watchdog: Add support for WDAT hardware watchdog)
Cc: 4.9+ <stable@vger.kernel.org> # 4.9+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Revert commit c68f0676ef7d ("ACPI / battery: Add quirk for Asus
GL502VSK and UX305LA") and commit 4446823e2573 ("ACPI / battery: Add
quirk for Asus UX360UA and UX410UAK").
On many many Asus products, the battery is sometimes reported as
charging or discharging even when it is full and you are on AC power.
This change quirked the kernel to avoid advertising the discharging
state when this happens on 4 laptop models, under the belief that
this was incorrect information. I presume it originates from user
reports who are confused that their battery status icon says that it
is discharging.
However, the reported information is indeed correct, and the quirk
approach taken is inadequate and more thought is needed first.
Specifically:
1. It only quirks discharging state, not charging
2. There are so many different Asus products and DMI naming variants
within those product families that behave this way; Linux could
grow to quirk hundreds of products and still not even be close at
"winning" this battle.
3. Asus previously clarified that this behaviour is intentional. The
platform will periodically do a partial discharge/charge cycle
when the battery is full, because this is one way to extend the
lifetime of the battery (leaving a battery at 100% charge and
unused will decrease its usable capacity over time).
My understanding is that any decent consumer product will have
this behaviour, but it appears that Asus is different in that
they expose this info through ACPI.
However, the behaviour seems correct. The ACPI spec does not
suggest in that the platform should hide the truth. It lets you
report that the battery is full of charge, and discharging, and
with external power connected; and Asus does this.
4. In terms of not confusing the user, this seems like something that
could/should be handled by userspace, which can also detect these
same (accurate) conditions in the general case.
Revert this quirk before it gets included in a release, while we look
for better approaches.
Signed-off-by: Daniel Drake <drake@endlessm.com>
Acked-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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This prepares the code for eventual removal of the original
style of deferred execution of the MLC.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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This ensures that acpi_ev_fixed_event_detect() does not use fixed_status
and and fixed_enable as uninitialized variables.
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Was acpi_gbl_parse_table_as_term_list, changed to:
acpi_gbl_execute_tables_as_methods.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Fixing the ACPI_ERROR_NAMESPACE macros created an "unused variable"
compile error when ACPI_NO_ERROR_MESSAGES was defined. This commit
also fixes the above compilation errors by surrounding variables
meant for debugging inside a new ACPI_ERROR_ONLY macro.
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Changes the option to ignore package resolution errors into
a runtime option.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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As the documentatuon above its declaration indicates, acpi_get_object_info()
is intended for early probe usage and as such should not call any methods
which may rely on op_regions, before this commit it was also calling _STA,
which on some systems does rely on op_regions.
Calling _STA before things are ready leads to errors such as these
(under Linux, on some hardware):
[ 0.123579] ACPI Error: No handler for Region [ECRM] (00000000ba9edc4c)
[generic_serial_bus] (20170831/evregion-166)
[ 0.123601] ACPI Error: Region generic_serial_bus (ID=9) has no handler
(20170831/exfldio-299)
[ 0.123618] ACPI Error: Method parse/execution failed
\_SB.I2C1.BAT1._STA, AE_NOT_EXIST (20170831/psparse-550)
End 2015 support for the _SUB method was removed for exactly the same
reason. Removing current_status from struct acpi_device_info only has a limited
impact. Within ACPICA it is only used by 2 debug messages, both
of which are modified to no longer print it with this commit.
Outside of ACPICA, there was one user in Linux, which has been patched to
no longer use current_status in Torvald's current master.
I've not checked if free_BSD or others are using the current_status field.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The implementation previously ignored null strings (""), but
these could be important, especially for debug.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Fixes a single-object memory leak on a store-to-reference method
invocation. ACPICA BZ 1439.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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After being enabled for the first time, the GPEs may have STS bits already
set. Setting EN bits is not sufficient to trigger the GPEs again, so this
patch polls GPEs after enabling them for the first time.
This is a cleaner version on top of the "GPE clear" fix generated according
to Mika's report and Rafael's original Linux based fix. Based on Linux
commit originated from Rafael J. Wysocki, fixed by Lv Zheng.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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_Exx evaluations
There is a risk that a GPE method/handler may be invoked twice. Let's
consider a case, both GPE0(RAW_HANDLER) and GPE1(_Exx) is triggered.
=======================================+=============================
IRQ handler (top-half) |IRQ polling
=======================================+=============================
acpi_ev_detect_gpe() |
LOCK() |
READ (GPE0-7 enable/status registers)|
^^^^^^^^^^^^ROOT CAUSE^^^^^^^^^^^^^^^|
Walk GPE0 |
UNLOCK() |LOCK()
Invoke GPE0 RAW_HANDLER |READ (GPE1 enable/status bit)
|acpi_ev_gpe_dispatch(irq=false)
| CLEAR (GPE1 enable bit)
| CLEAR (GPE1 status bit)
LOCK() |UNLOCK()
Walk GPE1 +=============================
acpi_ev_gpe_dispatch(irq=true) |IRQ polling (defer)
CLEAR (GPE1 enable bit) +=============================
CLEAR (GPE1 status bit) |acpi_ev_async_execute_gpe_method()
Walk others | Evaluate GPE1 _Exx
fi | acpi_ev_async_enable_gpe()
UNLOCK() | LOCK()
=======================================+ SET (GPE enable bit)
IRQ handler (bottom-half) | UNLOCK()
=======================================+
acpi_ev_async_execute_gpe_method() |
Evaluate GPE1 _Exx |
acpi_ev_async_enable_gpe() |
LOCK() |
SET (GPE1 enable bit) |
UNLOCK() |
=======================================+=============================
If acpi_ev_detect_gpe() is only invoked from the IRQ context, there won't be
more than one _Lxx/_Exx evaluations for one status bit flagging if the IRQ
handlers controlled by the underlying IRQ chip/driver (ex. APIC) are run in
serial. Note that, this is a known potential gap and we had an approach,
locking entire non-raw-handler processes in the top-half IRQ handler and
handling all raw-handlers out of the locked loop to be friendly to those
IRQ chip/driver. But the approach is too complicated while the issue is not
so real, thus ACPICA treated such issue (if any) as a parallelism/quality
issue of the underlying IRQ chip/driver to stop putting it on the radar.
Bug in link #1 is suspiciously reflecting the same cause, and if so, it can
also be fixed by this simpler approach.
But it will be no excuse an ACPICA problem now if ACPICA starts to poll
IRQs itself. In the changed scenario, _Exx will be evaluated from the task
context due to new ACPICA provided "polling after enabling GPEs" mechanism.
And the above figure uses edge-triggered GPEs demonstrating the possibility
of evaluating _Exx twice for one status bit flagging.
As a conclusion, there is now an increased chance of evaluating _Lxx/_Exx
more than once for one status bit flagging.
However this is still not a real problem if the _Lxx/_Exx checks the
underlying hardware IRQ reasoning and finally just changes the 2nd and the
follow-up evaluations into no-ops. Note that _Lxx should always be written
in this way as a level-trigger GPE could have it's status wrongly
duplicated by the underlying IRQ delivery mechanisms. But _Exx may have
very low quality BIOS by BIOS to trigger real issues. For example, trigger
duplicated button notifications.
To solve this issue, we need to stop reading a bunch of enable/status
register bits, but read only one GPE's enable/status bit. And GPE status
register's W1C nature ensures that acknowledging one GPE won't affect
another GPEs' status bits. Thus the hardware GPE architecture has already
provided us with the mechanism of implementing such parallelism.
So we can lock around one GPE handling process to achieve the parallelism:
1. If we can incorporate GPE enable bit check in detection and ensure the
atomicity of the following process (top-half IRQ handler):
READ (enable/status bit)
if (enabled && raised)
CLEAR (enable bit)
and handle the GPE after this process, we can ensure that we will only
invoke GPE handler once for one status bit flagging.
2. In addtion for edge-triggered GPEs, if we can ensure the atomicity of
the following process (top-half IRQ handler):
READ (enable/status bit)
if (enabled && raised)
CLEAR (enable bit)
CLEAR (status bit)
and handle the GPE after this process, we can ensure that we will only
invoke GPE handler once for one status bit flagging.
By doing a cleanup in this way, we can remove duplicate GPE handling code
and ensure that all logics are collected in 1 function. And the function
will be safe for both IRQ interrupt and IRQ polling, and will be safe for
us to release and re-acquire acpi_gbl_gpe_lock at any time rather than raw
handler only during the top-half IRQ handler. Lv Zheng.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196703 [#1]
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Unconditionally clearing ACPI IRQs during suspend/resume can lead to
unexpected IRQ losts. This patch fixes this issue by removing such IRQ
clearing code.
If this patch triggers regression, the regression should be in the GPE
handlers that cannot correctly determine some spurious triggered events as
no-ops. Please report any regression related to this commit to the ACPI
component on kernel bugzilla. Lv Zheng.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196249
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reported-and-tested-by: Eric Bakula-Davis <ericbakuladavis@gmail.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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I found an ACPI cache leak in ACPI early termination and boot continuing case.
When early termination occurs due to malicious ACPI table, Linux kernel
terminates ACPI function and continues to boot process. While kernel terminates
ACPI function, kmem_cache_destroy() reports Acpi-Operand cache leak.
Boot log of ACPI operand cache leak is as follows:
>[ 0.464168] ACPI: Added _OSI(Module Device)
>[ 0.467022] ACPI: Added _OSI(Processor Device)
>[ 0.469376] ACPI: Added _OSI(3.0 _SCP Extensions)
>[ 0.471647] ACPI: Added _OSI(Processor Aggregator Device)
>[ 0.477997] ACPI Error: Null stack entry at ffff880215c0aad8 (20170303/exresop-174)
>[ 0.482706] ACPI Exception: AE_AML_INTERNAL, While resolving operands for [opcode_name unavailable] (20170303/dswexec-461)
>[ 0.487503] ACPI Error: Method parse/execution failed [\DBG] (Node ffff88021710ab40), AE_AML_INTERNAL (20170303/psparse-543)
>[ 0.492136] ACPI Error: Method parse/execution failed [\_SB._INI] (Node ffff88021710a618), AE_AML_INTERNAL (20170303/psparse-543)
>[ 0.497683] ACPI: Interpreter enabled
>[ 0.499385] ACPI: (supports S0)
>[ 0.501151] ACPI: Using IOAPIC for interrupt routing
>[ 0.503342] ACPI Error: Null stack entry at ffff880215c0aad8 (20170303/exresop-174)
>[ 0.506522] ACPI Exception: AE_AML_INTERNAL, While resolving operands for [opcode_name unavailable] (20170303/dswexec-461)
>[ 0.510463] ACPI Error: Method parse/execution failed [\DBG] (Node ffff88021710ab40), AE_AML_INTERNAL (20170303/psparse-543)
>[ 0.514477] ACPI Error: Method parse/execution failed [\_PIC] (Node ffff88021710ab18), AE_AML_INTERNAL (20170303/psparse-543)
>[ 0.518867] ACPI Exception: AE_AML_INTERNAL, Evaluating _PIC (20170303/bus-991)
>[ 0.522384] kmem_cache_destroy Acpi-Operand: Slab cache still has objects
>[ 0.524597] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.12.0-rc5 #26
>[ 0.526795] Hardware name: innotek gmb_h virtual_box/virtual_box, BIOS virtual_box 12/01/2006
>[ 0.529668] Call Trace:
>[ 0.530811] ? dump_stack+0x5c/0x81
>[ 0.532240] ? kmem_cache_destroy+0x1aa/0x1c0
>[ 0.533905] ? acpi_os_delete_cache+0xa/0x10
>[ 0.535497] ? acpi_ut_delete_caches+0x3f/0x7b
>[ 0.537237] ? acpi_terminate+0xa/0x14
>[ 0.538701] ? acpi_init+0x2af/0x34f
>[ 0.540008] ? acpi_sleep_proc_init+0x27/0x27
>[ 0.541593] ? do_one_initcall+0x4e/0x1a0
>[ 0.543008] ? kernel_init_freeable+0x19e/0x21f
>[ 0.546202] ? rest_init+0x80/0x80
>[ 0.547513] ? kernel_init+0xa/0x100
>[ 0.548817] ? ret_from_fork+0x25/0x30
>[ 0.550587] vgaarb: loaded
>[ 0.551716] EDAC MC: Ver: 3.0.0
>[ 0.553744] PCI: Probing PCI hardware
>[ 0.555038] PCI host bridge to bus 0000:00
> ... Continue to boot and log is omitted ...
I analyzed this memory leak in detail and found acpi_ns_evaluate() function
only removes Info->return_object in AE_CTRL_RETURN_VALUE case. But, when errors
occur, the status value is not AE_CTRL_RETURN_VALUE, and Info->return_object is
also not null. Therefore, this causes acpi operand memory leak.
This cache leak causes a security threat because an old kernel (<= 4.9) shows
memory locations of kernel functions in stack dump. Some malicious users
could use this information to neutralize kernel ASLR.
I made a patch to fix ACPI operand cache leak.
Signed-off-by: Seunghun Han <kkamagui@gmail.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Commit 99759869faf1 "acpi: Add acpi_map_pxm_to_online_node()" added
support for mapping a given proximity to its nearest, by SLIT distance,
online node. However, it sometimes returns unexpected results due to the
fact that it switches from comparing the PXM node to the last node that
was closer than the current max.
for_each_online_node(n) {
dist = node_distance(node, n);
if (dist < min_dist) {
min_dist = dist;
node = n; <---- from this point we're using the
wrong node for node_distance()
Fixes: 99759869faf1 ("acpi: Add acpi_map_pxm_to_online_node()")
Cc: <stable@vger.kernel.org>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Revert commit 91eea70e5e5c (ACPI: battery: Add the ThinkPad "Not
Charging" quirk) as it is reported to cause user space to misbehave.
That appears to be due to bugs in user space, so this commit will go
in again after the bugs have been fixed and the fixes have been
delivered to users.
Link: https://marc.info/?l=linux-acpi&m=152089585129589&w=2
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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With a degraded battery, full_charge_capacity can be less
than design_capacity, however it's not sure that capacity_now's
max will follow.
Example from an affected machine:
/sys/class/power_supply/BAT0/charge_full -> 4290000
/sys/class/power_supply/BAT0/charge_full_design -> 5900000
/sys/class/power_supply/BAT0/charge_now -> 5900000
/sys/class/power_supply/BAT0/capacity -> 137
The battery is a degraded one with a full charge, and
charge_now is the value of charge_full_design instead of
charge_full.
Added a new quirk to test and correct this, and
a new function to check if the battery is a degraded one
or not. This keeps the possibility to be over 100 if
it's really the case.
Signed-off-by: Laszlo Toth <laszlth@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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In recent Intel hardware the IRQs become non-configurable after BIOS
initializes them in PEI phase and _PRS objects are no longer included in
ASL.
This is the same as "static (non-configurable) devices do not
specify a _PRS object" in ACPI spec. As a result, error messages
saying "ACPI Exception: AE_NOT_FOUND, Evaluating _PRS" does not need to
be in kernel messenges all the time but only when debug is enabled, and
acpi_pci_link_get_possible should not return -ENODEV when _PRS is
absent.
Signed-off-by: Alex Hung <alex.hung@canonical.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The function __battery_hook_unregister is local to the source and does
not need to be in global scope, so make it static.
Cleans up sparse warning:
drivers/acpi/battery.c:654:6: warning: symbol '__battery_hook_unregister'
was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Remove the GPL v2 license boilerplate and update with
the SPDX license identifier.
Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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CPPC dirver is aware of multiple PCC subspace IDs. Enhance the debug
and error messages in the driver to print the subspace id. In case of
error it will be helpful to find which particular subspace is failing.
Signed-off-by: George Cherian <george.cherian@cavium.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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These tables, NFIT and HMAT, are essential for describing
next-generation platform memory topologies and performance
characteristics. Allow them to be overridden for debug and test and
purposes.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit a6c3c725c44dd44ad9d3f2b2a64351fdbe6e0014
For the kernel-resident ACPICA, optionally be silent about the
NOT_FOUND case. Although this is potentially a serious problem,
it can generate a lot of noise/errors on platforms whose
firmware carries around a bunch of unused Package objects.
To disable these errors, define ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS
in the OS-specific header.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=198167
Link: https://github.com/acpica/acpica/commit/a6c3c725
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit 8faf6fca445eb7219963d80543fb802302a7a8c7
This change completes the integration of the recent changes to
package object handling with the module-level code support.
For acpi_exec, the -ep flag is removed.
This change allows table load to behave as if it were a method
invocation. Before this, the definition block definition below would
have loaded all named objects at the root scope. After loading, it
would execute the if statements at the root scope.
DefinitionBlock (...)
{
Name(OBJ1, 0)
if (1)
{
Device (DEV1)
{
Name (_HID,0x0)
}
}
Scope (DEV1)
{
Name (OBJ2)
}
}
The above code would load OBJ1 to the namespace, defer the execution
of the if statement and attempt to add OBJ2 within the scope of DEV1.
Since DEV1 is not in scope, this would incur an AE_NOT_FOUND error.
After this error is emitted, the if block is invoked and DEV1 and its
_HID is added to the namespace.
This commit changes the behavior to execute the if block in place
rather than deferring it until all tables are loaded. The new
behavior is as follows: insert OBJ1 in the namespace, invoke the if
statement and add DEV1 and its _HID to the namespace, add OBJ2 to the
scope of DEV1.
Bug report links:
Link: https://bugs.acpica.org/show_bug.cgi?id=963
Link: https://bugzilla.kernel.org/show_bug.cgi?id=153541
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196165
Link: https://bugzilla.kernel.org/show_bug.cgi?id=192621
Link: https://bugzilla.kernel.org/show_bug.cgi?id=197207
Link: https://bugzilla.kernel.org/show_bug.cgi?id=198051
Link: https://bugzilla.kernel.org/show_bug.cgi?id=198515
ACPICA repo:
Link: https://github.com/acpica/acpica/commit/8faf6fca
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit 0e44fee13434766ebbb4d156e3ed45604508d7c3
This reverts commit e1342c9f2dde37a67e916099658b65984ef8a434.
Implicit conversion should in fact be disabled for the "explicit
conversion" operators. This is stated in the ACPI specification.
The operators affected are:
to_integer
to_string
to_buffer
to_decimal_string
to_hex_string
to_BCD
from_BCD
Link: https://github.com/acpica/acpica/commit/0e44fee1
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit 3a08436fe3bff297a6de162252964e955946c7d3
Improve/simplify some of the debug messages.
Link: https://github.com/acpica/acpica/commit/3a08436f
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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ACPICA commit 0787fda3b224a78369e26ac6046658beb2b64c12
Clarify error when an attempt is made to evaluate things like
devices, events, etc. -- these objects have no data and cannot
be "evaluated".
Link: https://github.com/acpica/acpica/commit/0787fda3
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The EC/ACPI firmware on Lenovo ThinkPads used to report a status
of "Unknown" when the battery is between the charge start and
charge stop thresholds. On Windows, it reports "Not Charging"
so the quirk has been added to also report correctly.
Now the "status" attribute returns "Not Charging" when the
battery on ThinkPads is not physicaly charging.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ognjen Galic <smclt30p@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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This is a patch that implements a generic hooking API for the
generic ACPI battery driver.
With this new generic API, drivers can expose platform specific
behaviour via sysfs attributes in /sys/class/power_supply/BATn/
in a generic way.
A perfect example of the need for this API are Lenovo ThinkPads.
Lenovo ThinkPads have a ACPI extension that allows the setting of
start and stop charge thresholds in the EC and battery firmware
via ACPI. The thinkpad_acpi module can use this API to expose
sysfs attributes that it controls inside the ACPI battery driver
sysfs tree, under /sys/class/power_supply/BATN/.
The file drivers/acpi/battery.h has been moved to
include/acpi/battery.h and the includes inside ac.c, sbs.c, and
battery.c have been adjusted to reflect that.
When drivers hooks into the API, the API calls add_battery() for
each battery in the system that passes it a acpi_battery
struct. Then, the drivers can use device_create_file() to create
new sysfs attributes with that struct and identify the batteries
for per-battery attributes.
Signed-off-by: Ognjen Galic <smclt30p@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* acpi-ec:
ACPI / EC: Restore polling during noirq suspend/resume phases
* acpi-tables:
ACPI: SPCR: Mark expected switch fall-through in acpi_parse_spcr
* acpi-doc:
ACPI: dock: document sysfs interface
ACPI / DPTF: Document dptf_power sysfs atttributes
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Constify device_get_match_data() as OF and ACPI variants return
constant value.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Do the renaming to be consistent with its sibling, i.e.
of_device_get_match_data().
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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As well as its sibling of_device_get_match_data() has no such checks,
no need to do it in acpi_get_match_data().
First of all, we are not supposed to call fwnode API like this without
driver attached.
Second, since __acpi_match_device() does check input parameter there is
no need to duplicate it outside.
And last but not least one, the API should still serve the cases when
ACPI device is enumerated via PRP0001. In such case driver has neither
ACPI table nor driver data there.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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When __acpi_match_device() is called it would be possible to have
ACPI ID table a NULL pointer. To avoid potential dereference,
check for this before traverse.
While here, remove redundant 'else'.
Note, this patch implies a bit of refactoring acpi_of_match_device()
to return pointer to OF ID when matched followed by refactoring
__acpi_match_device() to return either ACPI or OF ID when matches.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Addresses-Coverity-ID: 1465078
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Commit 662591461c4b (ACPI / EC: Drop EC noirq hooks to fix a
regression) modified the ACPI EC driver so that it doesn't switch
over to busy polling mode during noirq stages of system suspend and
resume in an attempt to fix an issue resulting from that behavior.
However, that modification introduced a system resume regression on
Thinkpad X240, so make the EC driver switch over to the polling mode
during noirq stages of system suspend and resume again, which
effectively reverts the problematic commit.
Fixes: 662591461c4b (ACPI / EC: Drop EC noirq hooks to fix a regression)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=197863
Reported-by: Markus Demleitner <m@tfiu.de>
Tested-by: Markus Demleitner <m@tfiu.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:
for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
done
with de-mangling cleanups yet to come.
NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do. But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.
The next patch from Al will sort out the final differences, and we
should be all done.
Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These are mostly fixes and cleanups, a few new quirks, a couple of
updates related to the handling of ACPI tables and ACPICA copyrights
refreshment.
Specifics:
- Update the ACPICA kernel code to upstream revision 20180105
including:
* Assorted fixes (Jung-uk Kim)
* Support for X32 ABI compilation (Anuj Mittal)
* Update of ACPICA copyrights to 2018 (Bob Moore)
- Prepare for future modifications to avoid executing the _STA
control method too early (Hans de Goede)
- Make the processor performance control library code ignore _PPC
notifications if they cannot be handled and fix up the C1 idle
state definition when it is used as a fallback state (Chen Yu,
Yazen Ghannam)
- Make it possible to use the SPCR table on x86 and to replace the
original IORT table with a new one from initrd (Prarit Bhargava,
Shunyong Yang)
- Add battery-related quirks for Asus UX360UA and UX410UAK and add
quirks for table parsing on Dell XPS 9570 and Precision M5530 (Kai
Heng Feng)
- Address static checker warnings in the CPPC code (Gustavo Silva)
- Avoid printing a raw pointer to the kernel log in the smart battery
driver (Greg Kroah-Hartman)"
* tag 'acpi-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: sbshc: remove raw pointer from printk() message
ACPI: SPCR: Make SPCR available to x86
ACPI / CPPC: Use 64-bit arithmetic instead of 32-bit
ACPI / tables: Add IORT to injectable table list
ACPI / bus: Parse tables as term_list for Dell XPS 9570 and Precision M5530
ACPICA: Update version to 20180105
ACPICA: All acpica: Update copyrights to 2018
ACPI / processor: Set default C1 idle state description
ACPI / battery: Add quirk for Asus UX360UA and UX410UAK
ACPI: processor_perflib: Do not send _PPC change notification if not ready
ACPI / scan: Use acpi_bus_get_status() to initialize ACPI_TYPE_DEVICE devs
ACPI / bus: Do not call _STA on battery devices with unmet dependencies
PCI: acpiphp_ibm: prepare for acpi_get_object_info() no longer returning status
ACPI: export acpi_bus_get_status_handle()
ACPICA: Add a missing pair of parentheses
ACPICA: Prefer ACPI_TO_POINTER() over ACPI_ADD_PTR()
ACPICA: Avoid NULL pointer arithmetic
ACPICA: Linux: add support for X32 ABI compilation
ACPI / video: Use true for boolean value
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* acpi-video:
ACPI / video: Use true for boolean value
* acpi-battery:
ACPI / battery: Add quirk for Asus UX360UA and UX410UAK
* acpi-cppc:
ACPI / CPPC: Use 64-bit arithmetic instead of 32-bit
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* acpi-tables:
ACPI: SPCR: Make SPCR available to x86
ACPI / tables: Add IORT to injectable table list
* acpi-bus:
ACPI / bus: Parse tables as term_list for Dell XPS 9570 and Precision M5530
ACPI / scan: Use acpi_bus_get_status() to initialize ACPI_TYPE_DEVICE devs
ACPI / bus: Do not call _STA on battery devices with unmet dependencies
PCI: acpiphp_ibm: prepare for acpi_get_object_info() no longer returning status
ACPI: export acpi_bus_get_status_handle()
* acpi-processor:
ACPI / processor: Set default C1 idle state description
ACPI: processor_perflib: Do not send _PPC change notification if not ready
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* acpica:
ACPICA: Update version to 20180105
ACPICA: All acpica: Update copyrights to 2018
ACPICA: Add a missing pair of parentheses
ACPICA: Prefer ACPI_TO_POINTER() over ACPI_ADD_PTR()
ACPICA: Avoid NULL pointer arithmetic
ACPICA: Linux: add support for X32 ABI compilation
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There's no need to be printing a raw kernel pointer to the kernel log at
every boot. So just remove it, and change the whole message to use the
correct dev_info() call at the same time.
Reported-by: Wang Qize <wang_qize@venustech.com.cn>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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