linux.git/drivers/acpi, branch v5.11-rc1

Merge tag 'libnvdimm-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

2020-12-24T20:18:11+00:00

Pull libnvdimm updates from Dan Williams:
 "Twas the day before Christmas and the only thing stirring in libnvdimm
  / device-dax land is a pile of miscellaneous fixups and cleanups.

  The bulk of it has appeared in -next save the last two patches to
  device-dax that have passed my build and unit tests.

   - Fix a long standing block-window-namespace issue surfaced by the
     ndctl change to attempt to preserve the kernel device name over
     a 'reconfigure'

   - Fix a few error path memory leaks in nfit and device-dax

   - Silence a smatch warning in the ioctl path

   - Miscellaneous cleanups"

* tag 'libnvdimm-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: Avoid an unnecessary check in alloc_dev_dax_range()
  device-dax: Fix range release
  device-dax: delete a redundancy check in dev_dax_validate_align()
  libnvdimm/label: Return -ENXIO for no slot in __blk_label_update
  device-dax/core: Fix memory leak when rmmod dax.ko
  device-dax/pmem: Convert comma to semicolon
  libnvdimm: Cleanup include of badblocks.h
  ACPI: NFIT: Fix input validation of bus-family
  libnvdimm/namespace: Fix reaping of invalidated block-window-namespace labels
  ACPI/nfit: avoid accessing uninitialized memory in acpi_nfit_ctl()

Merge tag 'acpi-5.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2020-12-22T22:19:21+00:00

Pull more ACPI updates from Rafael Wysocki:
 "These make the ACPI enumeration of devices take _DEP information into
  account more aggressively, fix device IDs matching in the ACPI part of
  the PNP devices framework and update the ACPI code related to
  suspend-to-idle to take systems based on AMD hardware into account
  properly.

  Specifics:

   - Modify the ACPI device enumeration code to defer the enumeration of
     devices with an _HID whose lists of operation region dependencies
     returned by _DEP are not empty after eliminating the entries
     representing known-benign dependencies from them (Rafael Wysocki,
     Hans de Goede).

   - Make the ACPI PNP code mathing device IDs also take the length of
     the given ID string into account (Hui Wang).

   - Add AMD systems support to the ACPI code handling suspend-to-idle
     via the PNP0D80 (System Power Management Controller) device _DSM
     interface (Shyam Sundar).

   - Move the suspend-to-idle handling code related to the PNP0D80
     device _DSM interface, which is x86-specific, to a separate file in
     the x86/ subdirectory (Rafael Wysocki)"

* tag 'acpi-5.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: PM: s2idle: Move x86-specific code to the x86 directory
  ACPI: scan: Add Intel Baytrail Mailbox Device to acpi_ignore_dep_ids
  ACPI: scan: Avoid unnecessary second pass in acpi_bus_scan()
  ACPI: scan: Defer enumeration of devices with _DEP lists
  ACPI: scan: Evaluate _DEP before adding the device
  ACPI: PM: s2idle: Add AMD support to handle _DSM
  ACPI: PNP: compare the string length in the matching_id()

Merge tag 'pm-5.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2020-12-22T22:12:10+00:00

Pull more power management updates from Rafael Wysocki:
 "These update the CPPC cpufreq driver and intel_pstate (which involves
  updating the cpufreq core and the schedutil governor) and make
  janitorial changes in the ACPI code handling processor objects.

  Specifics:

   - Rework the passive-mode "fast switch" path in the intel_pstate
     driver to allow it receive the minimum (required) and target
     (desired) performance information from the schedutil governor so as
     to avoid running some workloads too fast (Rafael Wysocki).

   - Make the intel_pstate driver allow the policy max limit to be
     increased after the guaranteed performance value for the given CPU
     has increased (Rafael Wysocki).

   - Clean up the handling of CPU coordination types in the CPPC cpufreq
     driver and make it export frequency domains information to user
     space via sysfs (Ionela Voinescu).

   - Fix the ACPI code handling processor objects to use a correct
     coordination type when it fails to map frequency domains and drop a
     redundant CPU map initialization from it (Ionela Voinescu, Punit
     Agrawal)"

* tag 'pm-5.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Use most recent guaranteed performance values
  cpufreq: intel_pstate: Implement the ->adjust_perf() callback
  cpufreq: Add special-purpose fast-switching callback for drivers
  cpufreq: schedutil: Add util to struct sg_cpu
  cppc_cpufreq: replace per-cpu data array with a list
  cppc_cpufreq: expose information on frequency domains
  cppc_cpufreq: clarify support for coordination types
  cppc_cpufreq: use policy->cpu as driver of frequency setting
  ACPI: processor: fix NONE coordination for domain mapping failure

Merge branch 'pm-cpufreq'

2020-12-22T16:59:11+00:00

* pm-cpufreq:
  cpufreq: intel_pstate: Use most recent guaranteed performance values
  cpufreq: intel_pstate: Implement the ->adjust_perf() callback
  cpufreq: Add special-purpose fast-switching callback for drivers
  cpufreq: schedutil: Add util to struct sg_cpu
  cppc_cpufreq: replace per-cpu data array with a list
  cppc_cpufreq: expose information on frequency domains
  cppc_cpufreq: clarify support for coordination types
  cppc_cpufreq: use policy->cpu as driver of frequency setting
  ACPI: processor: fix NONE coordination for domain mapping failure
  ACPI: processor: Drop duplicate setting of shared_cpu_map

Merge branches 'acpi-scan', 'acpi-pnp' and 'acpi-sleep'

2020-12-22T14:51:11+00:00

* acpi-scan:
  ACPI: scan: Add Intel Baytrail Mailbox Device to acpi_ignore_dep_ids
  ACPI: scan: Avoid unnecessary second pass in acpi_bus_scan()
  ACPI: scan: Defer enumeration of devices with _DEP lists
  ACPI: scan: Evaluate _DEP before adding the device

* acpi-pnp:
  ACPI: PNP: compare the string length in the matching_id()

* acpi-sleep:
  ACPI: PM: s2idle: Move x86-specific code to the x86 directory
  ACPI: PM: s2idle: Add AMD support to handle _DSM

ACPI: PM: s2idle: Move x86-specific code to the x86 directory

2020-12-17T19:30:02+00:00

Some code in drivers/acpi/sleep.c (which is regarded as a generic
file) related to suspend-to-idle support has grown direct dependencies
on x86, but in fact it has been specific to x86 (which is the only
user of it) anyway for a long time.

For this reason, move that code to a separate file under acpi/x86/
and make it build and run as before under the right conditions.

While at it, rename a vendor checking function in that code and
consistently use acpi_handle_debug() for printing debug-related
information in it.

No expected functional impact.

Signed-off-by: Rafael J. Wysocki

ACPI: scan: Add Intel Baytrail Mailbox Device to acpi_ignore_dep_ids

2020-12-17T16:52:02+00:00

Linux does not have a driver for / does not use the "Intel Baytrail
Mailbox Device" (ACIP HID INT33BD). Add it to the acpi_ignore_dep_ids
list, so that we do not defer probing ACPI devices which depend on
another ACPI device with this HID.

Specifically this makes us not defer the probing of the GPO1 ACPI
device / GPIO controller on the Acer Switch 10E SW3-016. On this
tablet model the  _HID method of the ACPI node for the UART attached
Bluetooth, reads GPIOs to detect the installed wifi chip and updates
the reported _HID for the Bluetooth's ACPI node accordingly.

For the Bluetooth's ACPI node to report the correct _HID the GPO1 device
must be probed and attached during the first scan pass. Adding the
"INT33BD" HID to the acpi_ignore_dep_ids list makes this all work.

Signed-off-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki

ACPI: scan: Avoid unnecessary second pass in acpi_bus_scan()

2020-12-17T16:51:49+00:00

If there are no devices whose enumeration has been deferred after
the first pass in acpi_bus_scan(), the second pass is not necssary,
so avoid it with the help of a new static variable.

Signed-off-by: Rafael J. Wysocki 
Reviewed-by: Hans de Goede 
Tested-by: Hans de Goede 
Reviewed-by: Mika Westerberg

ACPI: scan: Defer enumeration of devices with _DEP lists

2020-12-17T16:51:40+00:00

In some cases ACPI control methods used during device enumeration
(such as _HID or _STA) may rely on Operation Region handlers
supplied by the drivers of other devices [1]:

 An example of this is the Acer Switch 10E SW3-016 model. The _HID
 method of the ACPI node for the UART attached Bluetooth, reads
 GPIOs to detect the installed wifi chip and update the _HID for the
 Bluetooth's ACPI node accordingly. The current ACPI scan code calls
 _HID before the GPIO controller's OpRegions are available, leading
 to the wrong _HID being used and Bluetooth not working.

In principle, in those cases there should be a _DEP control method
under the device object with OpRegion enumeration dependencies, so
deferring the enumeration of devices with _DEP returning a non-empty
list of suppliers of OpRegions depended on by the given device
(modulo some known exceptions that don't really supply any OpRegions
and are listed by _DEP for other reasons irrelevant for Linux) should
at least address the first-order dependencies by allowing the OpRegion
suppliers to be enumerated before their consumers.

Implement the above idea by modifying acpi_bus_scan() to enumerate
devices in the given scope of the ACPI namespace in two passes,
where the first pass covers the devices without "significant" lists
of dependencies coming from _DEP only and the second pass covers
all of the devices that were not enumerated in the first pass.

Take _DEP into account only for device objects with _HID, mostly in
order to avoid deferring the creation of ACPI device objects that
represent PCI devices and must be present during the enumeration
of the PCI bus (which takes place during the processing of the ACPI
device object that represents the host bridge), so that they can
be properly associated with the corresponding PCI devices.

Link: https://lore.kernel.org/linux-acpi/20201121203040.146252-1-hdegoede@redhat.com/ # [1]
Reported-by: Hans de Goede 
Signed-off-by: Rafael J. Wysocki 
Reviewed-by: Hans de Goede 
Tested-by: Hans de Goede 
Reviewed-by: Mika Westerberg

ACPI: scan: Evaluate _DEP before adding the device

2020-12-17T16:50:47+00:00

Evaluate _DEP before calling acpi_add_single_object() from
acpi_bus_check_add() and do that only for ACPI_BUS_TYPE_DEVICE
objects.

While at it, rename acpi_device_dep_initialize() to
acpi_scan_check_dep(), fix up a memory allocation statement in
that function, consistently treat memory allocation failures in
there as intermittent errors and make some related janitorial
changes in it.

This change will help to avoid calling acpi_add_single_object() if
there are unmet _DEP dependencies in the future, as that may cause
some control methods, potentially depending on the presence of
operation regions supplied by other devices, to be evaluated
prematurely.

Signed-off-by: Rafael J. Wysocki 
Reviewed-by: Hans de Goede 
Tested-by: Hans de Goede 
Reviewed-by: Mika Westerberg