| Age | Commit message (Collapse) | Author |
|---|
|
To save someone the time of searching the ACPI spec for
"Static Resource Affinity Table".
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
The new fwnode_property_get_reference_args() interface amends the fwnode
property API with the functionality of both of_parse_phandle_with_args()
and __acpi_node_get_property_reference().
The semantics is slightly different: the cells property is ignored on ACPI
as the number of arguments can be explicitly obtained from the firmware
interface.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
Make fwnode arguments to the fwnode property API const.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
Constify internal ACPI fwnode arguments in preparation for the same in
fwnode API.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
Make local variables const (head) or add new variables; adev was used for
two purposes: to refer the root device node and its children. The two
purposes are separated by this patch.
This is preparation for making fwnode arguments const for fwnode ops.
Don't constify the argument itself quite yet as this is used as a callback
function.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
Instead of relying on the struct fwnode_handle type field, define
fwnode_operations structs for all separate types of fwnodes. To find out
the type, compare to the ops field to relevant ops structs.
This change has two benefits:
1. it avoids adding the type field to each and every instance of struct
fwnode_handle, thus saving memory and
2. makes the ops field the single factor that defines both the types of
the fwnode as well as defines the implementation of its operations,
decreasing the possibility of bugs when developing code dealing with
fwnode internals.
Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
Commit eed4d47efe95 (ACPI / sleep: Ignore spurious SCI wakeups from
suspend-to-idle) introduced acpi_freeze_sync() whose purpose is to
flush all of the processing of possible wakeup events signaled via
the ACPI SCI. However, it doesn't flush the query workqueue used
by the EC driver, so the events generated by the EC may not be
processed timely which leads to issues (increased overhead at least,
lost events possibly).
To fix that introduce acpi_ec_flush_work() that will flush all of
the outstanding EC work and call it from acpi_freeze_sync().
Fixes: eed4d47efe95 (ACPI / sleep: Ignore spurious SCI wakeups from suspend-to-idle)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
|
|
ACPICA commit c8eac10178b387f9eb1935694e509d4518da77bb
This change restores the change introduced by commit 23b5bbe and
adds a comment concerning resource descriptor buffers that extend
beyond the END_TAG descriptor.
Link: https://github.com/acpica/acpica/commit/c8eac101
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit ed25461901d34120067b07ec280af30abc0458f1
Link: https://github.com/acpica/acpica/commit/ed254619
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit 8b14afac65d983610cc5387ede6d85ea5ee075be
The following ACPI table contains an invalid target node within the
Alias operator:
definition_block ("", "SSDT", 1, "Bug", "BugTable", 0x00001000)
{
Scope (_SB)
{
Device (DEV0)
{
Name (_ADR, 1)
Device (DEV1)
{
Alias (_ADR, _ADR)
}
}
}
}
If an ACPI table contains such an invalid target node in an Alias
operator, a segmentation fault will occur when the target node is
dereferenced within acpi_ex_create_alias. Add a check for such an invalid
target node in acpi_ex_create_alias and return AE_NULL_OBJECT as suggested
by @acpibob.
Link: https://github.com/acpica/acpica/commit/8b14afac
Signed-off-by: Alex James <theracermaster@gmail.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit 2dd6c151d5d5e76dacba8f7db9e259fc72982d17
ACPICA commit ffddee6638aced83be18b8bc88569586c1a43e03
This patch allows tables not verified in early stage verfied in
acpi_reallocate_root_table(). This is useful for OSPMs like linux where tables
cannot be verified in early stage due to early ioremp limitations on some
architectures. Reported by Hans de Geode, fixed by Lv Zheng.
Link: https://github.com/acpica/acpica/commit/2dd6c151
Link: https://github.com/acpica/acpica/commit/ffddee66
Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit 182bdffc0644f568be614a6d4debd651e29ca587
They are all mechanisms used to verify if a table is qualified to be
installed and controlled by acpi_gbl_enable_table_validation, so combine them
together. By doing so, table duplication check is applied to the statically
loaded tables (however whether it is actually enabled is still determined
by acpi_gbl_enable_table_validation). Lv Zheng.
Link: https://github.com/acpica/acpica/commit/182bdffc
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
acpi_gbl_verify_table_checksum
ACPICA commit 3d837b5d4b1033942b4d91c7d3801a09c3157918
acpi_gbl_verify_table_checksum is used to avoid validating (mapping) an entire
table in OS boot stage. 2nd "Reload" check in acpi_tb_install_standard_table()
is prepared for the same purpose. So this patch combines them together
using a renamed acpi_gbl_enable_table_validation flag. Lv Zheng.
Link: https://github.com/acpica/acpica/commit/3d837b5d
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit d3c944f2cdc8c7e847b7942b1864f285189f7bce
Windows seems to allow arbitrary table signatures for Load/load_table
opcodes:
ACPI BIOS Error (bug): Table has invalid signature [PRAD] (0x44415250)
So this patch removes dynamic load signature checks. However we need to
find a way to avoid table loading against tables like MADT. This is not
covered by this commit.
This Windows behavior has been validated on link #1. An end user bug
report can also be found on link #2.
This patch also includes simple cleanup for static load signature check
code. Reported by Ye Xiaolong, Fixed by Lv Zheng.
Link: https://github.com/acpica/acpica/commit/d3c944f2
Link: https://github.com/acpica/acpica/pull/121 [#1]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=118601 [#2]
Reported-by: Ye Xiaolong <xiaolong.ye@intel.com>
Reported-by: Olga Uhina <olga.uhina@gmail.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit 4551f51fa8ba33a977721c3b250cb70a309e3f23
Recently, we allows the table mutex to be held in both early and late stage
APIs. This patch further cleans up the related code to reduce redundant
code related to acpi_gbl_table_handler. Lv Zheng.
Link: https://github.com/acpica/acpica/commit/4551f51f
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit 73512384c9eb1e7f1b28d0a7372df26a3732f96b
To avoid caller to trigger unexpected warning messages (Link #1):
ACPI Warning: Table ffffffffbb461d20, Validation count is zero before decrement
Which is reported from acpi_tb_put_table(). When the table is validated, the
pointer must be non-zero. Thus the message is not suitable for invalidated
tables. This patch fixes the callee side based on this fact. Reported by
Cristian Aravena Romero, Fixed by Lv Zheng.
Link: https://github.com/acpica/acpica/commit/73512384
Link: https://bugzilla.kernel.org/show_bug.cgi?id=191221 [#1]
Reported-by: Cristian Aravena Romero <caravena@gmail.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit 894e49ef22db354eb1685cdb6f5f991766351d3c
acpisrc now has capability to convert both the followings:
1. Form 1:
typedef struct/union foo { struct/union foo {
.... --> ...
} FOO; }
2. Form 2:
typedef struct/union foo FOO; --> typedef struct/union foo foo;
It becomes unable to handle the following:
3. Form3:
typedef struct/union foo { /* comment */
...
} FOO;
-->
strut/union foo { /* comment */
...
};
As:
1. The purpose of acpisrc is to convert formatted code (ACPICA coding
style) into linux coding style,
2. acpisrc is a very simple tool that doesn't fully handle C language.
This commit changes the definitions side in order not to regress and we
shall make "no comments in struct/union line" as a new ACPICA coding style
rule. Lv Zheng.
Link: https://github.com/acpica/acpica/commit/894e49ef
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit 47538f5f0773c0820d8f552e20f6e77104290c01
The following commit is not correctly linuxized by its ACPICA form (see
link #1 for reference):
Commit: 3d867f6c5fd6535cdeceef3170e5e84e5dd80fc1
Subject: ACPICA: Use designated initializers
Thus breaks linuxize process.
This patch is a linuxized back port result of the upstreamed ACPICA
commit (see link #2 for reference).
Link: https://github.com/acpica/acpica/pull/248/ [#1]
Link: https://github.com/acpica/acpica/commit/47538f5f [#2]
Signed-off-by: Kees Cook <keescook@google.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
to existing names
ACPICA commit 9a252114197409290813bee570e9d53c22b99d32
This change allows compilation of code like the following:
definition_block (...)
{
External (ABCD.EFGH)
Device (ABCD)
{
Name (IJLK,0)
}
}
but does not allow compilation of code like the following:
definition_block (...)
{
External (ABCD)
Device (ABCD)
{
Name (EFGH,0)
}
}
Link: https://github.com/acpica/acpica/commit/9a252114
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
via ac_delete_table_list
ACPICA commit 8521b98ebdea450011fa62c14a77fed9affa4236
Link: https://github.com/acpica/acpica/commit/8521b98e
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
ACPICA commit bb457076d42b95b1453e261da2c8cc0c05ba4718
Fix some alignment issues
Link: https://github.com/acpica/acpica/commit/bb457076
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
After commit 8110dd281e15 (ACPI / sleep: EC-based wakeup from
suspend-to-idle on recent systems) the configuration of GPEs,
including the EC one, is not changed during suspend-to-idle on
recent systems. That's in order to make system wakeup events
generated by the EC work, in particular.
However, on some of the systems in question (for example on Dell
XPS13 9365), in addition to generating system wakeup events the
EC generates a heartbeat sequence of interrupts that have nothing
to do with wakeup while suspended, and the Low Power Idle S0 _DSM
interface doesn't change that behavior.
The users of those systems may prefer to disable the EC GPE during
system suspend, for the cost of non-functional power button wakeup
or similar, but currently there is no way to do that.
For this reason, add a new module parameter, ec_no_wakeup, for the
EC driver module that, if set, will cause the EC GPE to be disabled
during system suspend and re-enabled during the subsequent system
resume.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=192591#c106
Amends: 8110dd281e15 (ACPI / sleep: EC-based wakeup from suspend-to-idle on recent systems)
Reported-and-tested-by: Patrik Kullman <patrik.kullman@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
The SME patches we are about to apply add some E820 logic, so merge in
pending E820 code changes first, to have a single code base.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
|
nfit_init() calls nfit_mce_register() on module load. When the module
load fails the nfit mce decoder is not unregistered. The module's
memory is freed leaving the decoder chain referencing junk. This will
cause panics as future registrations will reference the free'd memory.
Unregister the nfit mce decoder on module init failure.
[v2]: register and then unregister mce handler to avoid losing mce events
[v3]: also cleanup nfit workqueue
Fixes: 6839a6d96f4e ("nfit: do an ARS scrub on hitting a latent media error")
Cc: <stable@vger.kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Len Brown <lenb@kernel.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: "Lee, Chun-Yi" <joeyli.kernel@gmail.com>
Cc: Linda Knippers <linda.knippers@hpe.com>
Cc: lszubowi@redhat.com
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
|
|
Dell OptiPlex 9020M is a micro PC desktop that has no built-in
LCD panel and its acpi_video does not work.
Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix the return value of an IRQ mapping routine in the ACPI core,
fix an EC driver issue causing abnormal fan behavior after system
resume on some systems and add quirks for ACPI device objects that
need to be treated as "always present" to work around bogus
implementations of the _STA control method.
Specifics:
- Fix the return value of acpi_gsi_to_irq() to make the GSI to IRQ
mapping work on the Mustang (ARM64) platform (Mark Salter).
- Fix an EC driver issue that causes fans to behave abnormally after
system resume on some systems which turns out to be related to
switching over the EC into the polling mode during the noirq stages
of system suspend and resume (Lv Zheng).
- Add quirks for ACPI device objects that need to be treated as
"always present", because their _STA methods are designed to work
around Windows driver bugs and return garbage from our perspective
(Hans de Goede)"
* tag 'acpi-fixes-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / x86: Add KIOX000A accelerometer on GPD win to always_present_ids array
ACPI / x86: Add Dell Venue 11 Pro 7130 touchscreen to always_present_ids
ACPI / x86: Allow matching always_present_id array entries by DMI
Revert "ACPI / EC: Enable event freeze mode..." to fix a regression
ACPI / EC: Drop EC noirq hooks to fix a regression
ACPI / irq: Fix return code of acpi_gsi_to_irq()
|
|
* acpi-ec:
Revert "ACPI / EC: Enable event freeze mode..." to fix a regression
ACPI / EC: Drop EC noirq hooks to fix a regression
* acpi-irq:
ACPI / irq: Fix return code of acpi_gsi_to_irq()
* acpi-quirks:
ACPI / x86: Add KIOX000A accelerometer on GPD win to always_present_ids array
ACPI / x86: Add Dell Venue 11 Pro 7130 touchscreen to always_present_ids
ACPI / x86: Allow matching always_present_id array entries by DMI
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel:
"This update comes with:
- Support for lockless operation in the ARM io-pgtable code.
This is an important step to solve the scalability problems in the
common dma-iommu code for ARM
- Some Errata workarounds for ARM SMMU implemenations
- Rewrite of the deferred IO/TLB flush code in the AMD IOMMU driver.
The code suffered from very high flush rates, with the new
implementation the flush rate is down to ~1% of what it was before
- Support for amd_iommu=off when booting with kexec.
The problem here was that the IOMMU driver bailed out early without
disabling the iommu hardware, if it was enabled in the old kernel
- The Rockchip IOMMU driver is now available on ARM64
- Align the return value of the iommu_ops->device_group call-backs to
not miss error values
- Preempt-disable optimizations in the Intel VT-d and common IOVA
code to help Linux-RT
- Various other small cleanups and fixes"
* tag 'iommu-updates-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (60 commits)
iommu/vt-d: Constify intel_dma_ops
iommu: Warn once when device_group callback returns NULL
iommu/omap: Return ERR_PTR in device_group call-back
iommu: Return ERR_PTR() values from device_group call-backs
iommu/s390: Use iommu_group_get_for_dev() in s390_iommu_add_device()
iommu/vt-d: Don't disable preemption while accessing deferred_flush()
iommu/iova: Don't disable preempt around this_cpu_ptr()
iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #126
iommu/arm-smmu-v3: Enable ACPI based HiSilicon CMD_PREFETCH quirk(erratum 161010701)
iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74
ACPI/IORT: Fixup SMMUv3 resource size for Cavium ThunderX2 SMMUv3 model
iommu/arm-smmu-v3, acpi: Add temporary Cavium SMMU-V3 IORT model number definitions
iommu/io-pgtable-arm: Use dma_wmb() instead of wmb() when publishing table
iommu/io-pgtable: depend on !GENERIC_ATOMIC64 when using COMPILE_TEST with LPAE
iommu/arm-smmu-v3: Remove io-pgtable spinlock
iommu/arm-smmu: Remove io-pgtable spinlock
iommu/io-pgtable-arm-v7s: Support lockless operation
iommu/io-pgtable-arm: Support lockless operation
iommu/io-pgtable: Introduce explicit coherency
iommu/io-pgtable-arm-v7s: Refactor split_blk_unmap
...
|
|
The GPD win BIOS dated 20170320 has disabled the accelerometer, the
drivers sometimes cause crashes under Windows and this is how the
manufacturer has solved this :|
I see no other way to keep the accelerometer working under Windows then
adding it to the always_present_ids array.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
The _STA method of the Venue 11 Pro 7130 touchscreen has this ugliness:
Method (_STA, 0, NotSerialized) // _STA: Status
{
If ((SDS1 & One) == One)
{
If (RST1 == Zero)
{
Return (0x0F)
}
ElseIf (RST2 == Zero)
{
RST2 = One
TMRV = Timer
}
Else
{
Local0 = ((Timer - TMRV) / 0x2710)
If (Local0 > TMRI)
{
RST2 = Zero
RST1 = Zero
}
}
}
Else
{
Return (Zero)
}
}
Whereby RST1 gets set by _SB.PCI0.GFX0.LCD.LCD1._ON, this means that
after RST1 has been set first _STA must be called to set TIMER and
then after enough time has elapsed _STA must be called twice more, once
to clear RST1 and once to finally return 0xf before the touchscreen will
show up. Which is just crazy.
This commit adds an always_present_ids entry for the SYNA7500 touchscreen
ACPI node, together with a DMI match for the Venue 11 Pro 7130, fixing the
touchscreen not working on this device.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
On some x86 systems the DSDT hides APCI devices to work around Windows
driver bugs. On one such system the device is even hidden until a certain
time after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed *and*
_STA has been called at least 3 times since. TL;DR: it is a mess.
Until now the always_present_id matching was used to force status
for a whole class of devices, e.g. always enable PWM1 on CHerry Trail
devices.
This commit extends the always_present_id matching code to optionally
also check for a DMI match so that we can also add system specific
quirks to the always_present_id array.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
On Lenovo ThinkPad X1 Carbon - the 5th Generation, enabling an earlier
EC event freezing timing causes acpitz-virtual-0 to report a stuck
48C temparature. And with EC firmware revisioned as 1.14, without
reverting back to old EC event freezing timing, the fan still blows
up after a system resume.
This reverts the culprit change so that the regression can be fixed
without upgrading the EC firmware.
Fixes: d30283057ecd (ACPI / EC: Enable event freeze mode to improve event handling)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=191181#c168
Tested-by: Damjan Georgievski <gdamjan@gmail.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: 4.9+ <stable@vger.kernel.org> # 4.9+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
According to bug reports, although the busy polling mode can make
noirq stages execute faster, it causes abnormal fan blowing up after
system resume (see the first link below for a video demonstration)
on Lenovo ThinkPad X1 Carbon - the 5th Generation. The problem can
be fixed by upgrading the EC firmware on that machine.
However, many reporters confirm that the problem can be fixed by
stopping busy polling during suspend/resume and for some of them
upgrading the EC firmware is not an option.
For this reason, drop the noirq stage hooks from the EC driver
to fix the regression.
Fixes: c3a696b6e8f8 (ACPI / EC: Use busy polling mode when GPE is not enabled)
Link: https://youtu.be/9NQ9x-Jm99Q
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196129
Reported-by: Andreas Lindhe <andreas@lindhe.io>
Tested-by: Gjorgji Jankovski <j.gjorgji@gmail.com>
Tested-by: Damjan Georgievski <gdamjan@gmail.com>
Tested-by: Fernando Chaves <nanochaves@gmail.com>
Tested-by: Tomislav Ivek <tomislav.ivek@gmail.com>
Tested-by: Denis P. <theoriginal.skullburner@gmail.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
The function acpi_gsi_to_irq() must return 0 on success as the caller
ghes_probe expects an 0 for success. This change also matches x86
implementation.
This patch was submitted around 4.5 timeframe but wasn't pushed because
it didn't fix a real problem. Now that RAS/GHES patches are in kernel,
this fixes an error seen on a Mustang (arm64) platform:
GHES: Failed to map GSI to IRQ for generic hardware error source: 2
GHES: probe of GHES.2 failed with error 81
Signed-off-by: Tuan Phan <tphan@apm.com>
Signed-off-by: Loc Ho <lho@apm.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device properties framework updates from Rafael Wysocki:
"These mostly rearrange the device properties core code and add a few
helper functions to it as a foundation for future work.
Specifics:
- Rearrange the core device properties code by moving the code
specific to each supported platform configuration framework (ACPI,
DT and build-in) into a separate file (Sakari Ailus).
- Add helper functions for accessing device properties in a
firmware-agnostic way (Sakari Ailus, Kieran Bingham)"
* tag 'devprop-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
device property: Add fwnode_graph_get_port_parent
device property: Add FW type agnostic fwnode_graph_get_remote_node
device property: Introduce fwnode_device_is_available()
device property: Move fwnode graph ops to firmware specific locations
device property: Move FW type specific functionality to FW specific files
ACPI: Constify argument to acpi_device_is_present()
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These fix the ACPI SPCR table handling and add a workaround for APM
X-Gene 8250 UART on top of that, fix two ACPI hotplug issues related
to hot-remove failures, add a missing "static" to one function and
constify some attribute_group structures.
Specifics:
- Fix the ACPI code handling the SPCR table to check access width of
MMIO regions and add a workaround for APM X-Gene 8250 UART to use
32-bit MMIO accesses with its register (Loc Ho).
- Fix two ACPI-based hotplug issues related to the handling of
hot-remove failures on the OS side (Chun-Yi Lee).
- Constify attribute_group structures in a few places (Arvind Yadav).
- Make one local function static (Colin Ian King)"
* tag 'acpi-extra-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / DPTF: constify attribute_group structures
ACPI / LPSS: constify attribute_group structures
ACPI: BGRT: constify attribute_group structures
ACPI / power: constify attribute_group structures
ACPI / scan: Indicate to platform when hot remove returns busy
ACPI / bus: handle ACPI hotplug schedule errors completely
ACPI / osi: Make local function acpi_osi_dmi_linux() static
ACPI: SPCR: Workaround for APM X-Gene 8250 UART 32-alignment errata
ACPI: SPCR: Use access width to determine mmio usage
|
|
* acpi-spcr:
ACPI: SPCR: Workaround for APM X-Gene 8250 UART 32-alignment errata
ACPI: SPCR: Use access width to determine mmio usage
* acpi-osi:
ACPI / osi: Make local function acpi_osi_dmi_linux() static
* acpi-bus:
ACPI / bus: handle ACPI hotplug schedule errors completely
* acpi-scan:
ACPI / scan: Indicate to platform when hot remove returns busy
* acpi-misc:
ACPI / DPTF: constify attribute_group structures
ACPI / LPSS: constify attribute_group structures
ACPI: BGRT: constify attribute_group structures
ACPI / power: constify attribute_group structures
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"libnvdimm updates for the latest ACPI and UEFI specifications. This
pull request also includes new 'struct dax_operations' enabling to
undo the abuse of copy_user_nocache() for copy operations to pmem.
The dax work originally missed 4.12 to address concerns raised by Al.
Summary:
- Introduce the _flushcache() family of memory copy helpers and use
them for persistent memory write operations on x86. The
_flushcache() semantic indicates that the cache is either bypassed
for the copy operation (movnt) or any lines dirtied by the copy
operation are written back (clwb, clflushopt, or clflush).
- Extend dax_operations with ->copy_from_iter() and ->flush()
operations. These operations and other infrastructure updates allow
all persistent memory specific dax functionality to be pushed into
libnvdimm and the pmem driver directly. It also allows dax-specific
sysfs attributes to be linked to a host device, for example:
/sys/block/pmem0/dax/write_cache
- Add support for the new NVDIMM platform/firmware mechanisms
introduced in ACPI 6.2 and UEFI 2.7. This support includes the v1.2
namespace label format, extensions to the address-range-scrub
command set, new error injection commands, and a new BTT
(block-translation-table) layout. These updates support inter-OS
and pre-OS compatibility.
- Fix a longstanding memory corruption bug in nfit_test.
- Make the pmem and nvdimm-region 'badblocks' sysfs files poll(2)
capable.
- Miscellaneous fixes and small updates across libnvdimm and the nfit
driver.
Acknowledgements that came after the branch was pushed: commit
6aa734a2f38e ("libnvdimm, region, pmem: fix 'badblocks'
sysfs_get_dirent() reference lifetime") was reviewed by Toshi Kani
<toshi.kani@hpe.com>"
* tag 'libnvdimm-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (42 commits)
libnvdimm, namespace: record 'lbasize' for pmem namespaces
acpi/nfit: Issue Start ARS to retrieve existing records
libnvdimm: New ACPI 6.2 DSM functions
acpi, nfit: Show bus_dsm_mask in sysfs
libnvdimm, acpi, nfit: Add bus level dsm mask for pass thru.
acpi, nfit: Enable DSM pass thru for root functions.
libnvdimm: passthru functions clear to send
libnvdimm, btt: convert some info messages to warn/err
libnvdimm, region, pmem: fix 'badblocks' sysfs_get_dirent() reference lifetime
libnvdimm: fix the clear-error check in nsio_rw_bytes
libnvdimm, btt: fix btt_rw_page not returning errors
acpi, nfit: quiet invalid block-aperture-region warnings
libnvdimm, btt: BTT updates for UEFI 2.7 format
acpi, nfit: constify *_attribute_group
libnvdimm, pmem: disable dax flushing when pmem is fronting a volatile region
libnvdimm, pmem, dax: export a cache control attribute
dax: convert to bitmask for flags
dax: remove default copy_from_iter fallback
libnvdimm, nfit: enable support for volatile ranges
libnvdimm, pmem: fix persistence warning
...
|
|
At least on the UP board SBC both PWMs are enabled leading to us
trying to add the same pwm_lookup twice, which leads to the following:
[ 0.902224] list_add double add: new=ffffffffb8efd400,
prev=ffffffffb8efd400, next=ffffffffb8eeede0.
[ 0.912466] ------------[ cut here ]------------
[ 0.917624] kernel BUG at lib/list_debug.c:31!
[ 0.922588] invalid opcode: 0000 [#1] SMP
...
[ 1.027450] Call Trace:
[ 1.030185] pwm_add_table+0x4c/0x90
[ 1.034181] bsw_pwm_setup+0x1a/0x20
[ 1.038175] acpi_lpss_create_device+0xfe/0x420
...
This commit fixes this by only calling pwm_add_table() for the first
PWM controller (which is the one used for the backlight).
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1458599
Fixes: bf7696a12071 (acpi: lpss: call pwm_add_table() for BSW...)
Fixes: 04434ab5120a (ACPI / LPSS: Call pwm_add_table() for Bay Trail...)
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: 4.11+ <stable@vger.kernel.org> # 4.11+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
- RAS reporting via GHES/APEI (ACPI)
- Indirect ftrace trampolines for modules
- Improvements to kernel fault reporting
- Page poisoning
- Sigframe cleanups and preparation for SVE context
- Core dump fixes
- Sparse fixes (mainly relating to endianness)
- xgene SoC PMU v3 driver
- Misc cleanups and non-critical fixes
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (75 commits)
arm64: fix endianness annotation for 'struct jit_ctx' and friends
arm64: cpuinfo: constify attribute_group structures.
arm64: ptrace: Fix incorrect get_user() use in compat_vfp_set()
arm64: ptrace: Remove redundant overrun check from compat_vfp_set()
arm64: ptrace: Avoid setting compat FP[SC]R to garbage if get_user fails
arm64: fix endianness annotation for __apply_alternatives()/get_alt_insn()
arm64: fix endianness annotation in get_kaslr_seed()
arm64: add missing conversion to __wsum in ip_fast_csum()
arm64: fix endianness annotation in acpi_parking_protocol.c
arm64: use readq() instead of readl() to read 64bit entry_point
arm64: fix endianness annotation for reloc_insn_movw() & reloc_insn_imm()
arm64: fix endianness annotation for aarch64_insn_write()
arm64: fix endianness annotation in aarch64_insn_read()
arm64: fix endianness annotation in call_undef_hook()
arm64: fix endianness annotation for debug-monitors.c
ras: mark stub functions as 'inline'
arm64: pass endianness info to sparse
arm64: ftrace: fix !CONFIG_ARM64_MODULE_PLTS kernels
arm64: signal: Allow expansion of the signal frame
acpi: apei: check for pending errors when probing GHES entries
...
|
|
Now that lazy TLB suppresses all flush IPIs (as opposed to all but
the first), there's no need to leave_mm() when going idle.
This means we can get rid of the rcuidle hack in
switch_mm_irqs_off() and we can unexport leave_mm().
This also removes acpi_unlazy_tlb() from the x86 and ia64 headers,
since it has no callers any more.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Nadav Amit <nadav.amit@gmail.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/03c699cfd6021e467be650d6b73deaccfe4b4bd7.1498751203.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These mostly update the ACPICA code in the kernel to upstream revision
20170531 which covers all of the new material from ACPI 6.2, including
new tables (WSMT, HMAT, PPTT), new subtables and definition changes
for some existing tables (BGRT, HEST, SRAT, TPM2, PCCT), new resource
descriptor macros for pin control, support for new predefined methods
(_LSI, _LSR, _LSW, _HMA), fixes and cleanups.
On top of that, an additional ACPICA change from Kees (which also is
upstream already) switches all of the definitions of function pointer
structures in ACPICA to use designated initializers so as to make the
structure layout randomization GCC plugin work with it.
The rest is a few fixes and cleanups in the EC driver, an xpower PMIC
driver update, a new backlight blacklist entry, and update of the
tables configfs interface and a messages formatting cleanup.
Specifics:
- Update the ACPICA code in the kernel to upstream revision revision
20170531 (which covers all of the new material from ACPI 6.2)
including:
* Support for the PinFunction(), PinConfig(), PinGroup(),
PinGroupFunction(), and PinGroupConfig() resource descriptors
(Mika Westerberg).
* Support for new subtables in HEST and SRAT, new notify value for
HEST, header support for TPM2 table changes, and BGRT Status
field update (Bob Moore).
* Support for new PCCT subtables (David Box).
* Support for _LSI, _LSR, _LSW, and _HMA as predefined methods
(Erik Schmauss).
* Support for the new WSMT, HMAT, and PPTT tables (Lv Zheng).
* New UUID values for Processor Properties (Bob Moore).
* New notify values for memory attributes and graceful shutdown
(Bob Moore).
* Fix related to the PCAT_COMPAT MADT flag (Janosch Hildebrand).
* Resource to AML conversion fix for resources containing GPIOs
(Mika Westerberg).
* Disassembler-related updates (Bob Moore, David Box, Erik
Schmauss).
* Assorted fixes and cleanups (Bob Moore, Erik Schmauss, Lv Zheng,
Cao Jin).
- Modify ACPICA to always use designated initializers for function
pointer structures to make the structure layout randomization GCC
plugin work with it (Kees Cook).
- Update the tables configfs interface to unload SSDTs on configfs
entry removal (Jan Kiszka).
- Add support for the GPI1 regulator to the xpower PMIC Operation
Region handler (Hans de Goede).
- Fix ACPI EC issues related to conflicting EC definitions in the
ECDT and in the ACPI namespace (Lv Zheng, Carlo Caione, Chris
Chiu).
- Fix an interrupt storm issue in the EC driver and make its debug
output work with dynamic debug as expected (Lv Zheng).
- Add ACPI backlight quirk for Dell Precision 7510 (Shih-Yuan Lee).
- Fix whitespace in pr_fmt() to align log entries properly in some
places in the ACPI subsystem (Vincent Legoll)"
* tag 'acpi-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (63 commits)
ACPI / EC: Add quirk for GL720VMK
ACPI / EC: Fix media keys not working problem on some Asus laptops
ACPI / EC: Add support to skip boot stage DSDT probe
ACPI / EC: Enhance boot EC sanity check
ACPI / video: Add quirks for the Dell Precision 7510
ACPI: EC: Fix EC command visibility for dynamic debug
ACPI: EC: Fix an EC event IRQ storming issue
ACPICA: Use designated initializers
ACPICA: Update version to 20170531
ACPICA: Update a couple of debug output messages
ACPICA: acpiexec: enhance local signal handler
ACPICA: Simplify output for the ACPI Debug Object
ACPICA: Unix application OSL: Correctly handle control-c (EINTR)
ACPICA: Improvements for debug output only
ACPICA: Disassembler: allow conflicting external declarations to be emitted.
ACPICA: Disassembler: add external op to namespace on first pass
ACPICA: Disassembler: prevent external op's from opening a new scope
ACPICA: Changed Gbl_disasm_flag to acpi_gbl_disasm_flag
ACPICA: Changing External to a named object
ACPICA: Update two error messages to emit control method name
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"The big ticket items here are the rework of suspend-to-idle in order
to add proper support for power button wakeup from it on recent Dell
laptops and the rework of interfaces exporting the current CPU
frequency on x86.
In addition to that, support for a few new pieces of hardware is
added, the PCI/ACPI device wakeup infrastructure is simplified
significantly and the wakeup IRQ framework is fixed to unbreak the IRQ
bus locking infrastructure.
Also, there are some functional improvements for intel_pstate, tools
updates and small fixes and cleanups all over.
Specifics:
- Rework suspend-to-idle to allow it to take wakeup events signaled
by the EC into account on ACPI-based platforms in order to properly
support power button wakeup from suspend-to-idle on recent Dell
laptops (Rafael Wysocki).
That includes the core suspend-to-idle code rework, support for the
Low Power S0 _DSM interface, and support for the ACPI INT0002
Virtual GPIO device from Hans de Goede (required for USB keyboard
wakeup from suspend-to-idle to work on some machines).
- Stop trying to export the current CPU frequency via /proc/cpuinfo
on x86 as that is inaccurate and confusing (Len Brown).
- Rework the way in which the current CPU frequency is exported by
the kernel (over the cpufreq sysfs interface) on x86 systems with
the APERF and MPERF registers by always using values read from
these registers, when available, to compute the current frequency
regardless of which cpufreq driver is in use (Len Brown).
- Rework the PCI/ACPI device wakeup infrastructure to remove the
questionable and artificial distinction between "devices that can
wake up the system from sleep states" and "devices that can
generate wakeup signals in the working state" from it, which allows
the code to be simplified quite a bit (Rafael Wysocki).
- Fix the wakeup IRQ framework by making it use SRCU instead of RCU
which doesn't allow sleeping in the read-side critical sections,
but which in turn is expected to be allowed by the IRQ bus locking
infrastructure (Thomas Gleixner).
- Modify some computations in the intel_pstate driver to avoid
rounding errors resulting from them (Srinivas Pandruvada).
- Reduce the overhead of the intel_pstate driver in the HWP
(hardware-managed P-states) mode and when the "performance" P-state
selection algorithm is in use by making it avoid registering
scheduler callbacks in those cases (Len Brown).
- Rework the energy_performance_preference sysfs knob in intel_pstate
by changing the values that correspond to different symbolic hint
names used by it (Len Brown).
- Make it possible to use more than one cpuidle driver at the same
time on ARM (Daniel Lezcano).
- Make it possible to prevent the cpuidle menu governor from using
the 0 state by disabling it via sysfs (Nicholas Piggin).
- Add support for FFH (Fixed Functional Hardware) MWAIT in ACPI C1 on
AMD systems (Yazen Ghannam).
- Make the CPPC cpufreq driver take the lowest nonlinear performance
information into account (Prashanth Prakash).
- Add support for hi3660 to the cpufreq-dt driver, fix the imx6q
driver and clean up the sfi, exynos5440 and intel_pstate drivers
(Colin Ian King, Krzysztof Kozlowski, Octavian Purdila, Rafael
Wysocki, Tao Wang).
- Fix a few minor issues in the generic power domains (genpd)
framework and clean it up somewhat (Krzysztof Kozlowski, Mikko
Perttunen, Viresh Kumar).
- Fix a couple of minor issues in the operating performance points
(OPP) framework and clean it up somewhat (Viresh Kumar).
- Fix a CONFIG dependency in the hibernation core and clean it up
slightly (Balbir Singh, Arvind Yadav, BaoJun Luo).
- Add rk3228 support to the rockchip-io adaptive voltage scaling
(AVS) driver (David Wu).
- Fix an incorrect bit shift operation in the RAPL power capping
driver (Adam Lessnau).
- Add support for the EPP field in the HWP (hardware managed
P-states) control register, HWP.EPP, to the x86_energy_perf_policy
tool and update msr-index.h with HWP.EPP values (Len Brown).
- Fix some minor issues in the turbostat tool (Len Brown).
- Add support for AMD family 0x17 CPUs to the cpupower tool and fix a
minor issue in it (Sherry Hurwitz).
- Assorted cleanups, mostly related to the constification of some
data structures (Arvind Yadav, Joe Perches, Kees Cook, Krzysztof
Kozlowski)"
* tag 'pm-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (69 commits)
cpufreq: Update scaling_cur_freq documentation
cpufreq: intel_pstate: Clean up after performance governor changes
PM: hibernate: constify attribute_group structures.
cpuidle: menu: allow state 0 to be disabled
intel_idle: Use more common logging style
PM / Domains: Fix missing default_power_down_ok comment
PM / Domains: Fix unsafe iteration over modified list of domains
PM / Domains: Fix unsafe iteration over modified list of domain providers
PM / Domains: Fix unsafe iteration over modified list of device links
PM / Domains: Handle safely genpd_syscore_switch() call on non-genpd device
PM / Domains: Call driver's noirq callbacks
PM / core: Drop run_wake flag from struct dev_pm_info
PCI / PM: Simplify device wakeup settings code
PCI / PM: Drop pme_interrupt flag from struct pci_dev
ACPI / PM: Consolidate device wakeup settings code
ACPI / PM: Drop run_wake from struct acpi_device_wakeup_flags
PM / QoS: constify *_attribute_group.
PM / AVS: rockchip-io: add io selectors and supplies for rk3228
powercap/RAPL: prevent overridding bits outside of the mask
PM / sysfs: Constify attribute groups
...
|
|
attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
904 496 0 1400 578 drivers/acpi/dptf/dptf_power.o
File size After adding 'const':
text data bss dec hex filename
944 432 0 1376 560 drivers/acpi/dptf/dptf_power.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
4622 304 8 4934 1346 drivers/acpi/power.o
File size After adding 'const':
text data bss dec hex filename
4846 80 8 4934 1346 drivers/acpi/power.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
In hotplug logic, it always indicates non-specific failure to
platform through _OST when handing ACPI hot-remove event failed. Then
platform terminates the hot-remove process but it can not identify
the reason.
Base on current hot-remove code, there have two situations that it
returns busy:
- OSPM try to offline an individual device, but the device offline
function returns "busy".
- When the ejection event is applied to an "not offlined yet"
container. OSPM sends a kobject change event to userspace and
returns "busy".
Both of them will returns -EBUSY to ACPI device hotplug function.
Then, the hotplug function indicates non-specific failure to platform
just like for any other error, e.g. -ENODEV or -EIO.
The benefit to the platform for identifying the OS "busy" state is
that it can use a different approach to handle the "busy" instead of
simply terminating the hot-remove operation for an unknown reason.
For example, the platform can wait for a while and then re-trigger
hot-remove.
Signed-off-by: "Lee, Chun-Yi" <jlee@suse.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
[ rjw: Changelog massage ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
Kernel should decrements the reference count of ACPI device
when the scheduling of ACPI hotplug work failed, and evaluates
_OST to notify BIOS the failure.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: "Lee, Chun-Yi" <jlee@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
