linux.git/drivers/acpi/scan.c, branch v5.3.2

drivers/acpi/scan.c: document why we don't need the device_hotplug_lock

2019-08-03T14:02:01+00:00

Let's document why the lock is not needed in acpi_scan_init(), right now
this is not really obvious.

[akpm@linux-foundation.org: fix tpyo]
Link: http://lkml.kernel.org/r/20190731135306.31524-1-david@redhat.com
Signed-off-by: David Hildenbrand 
Acked-by: Michal Hocko 
Acked-by: Rafael J. Wysocki 
Cc: Oscar Salvador 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

treewide: Add SPDX license identifier for missed files

2019-05-21T08:50:45+00:00

Add SPDX license identifiers to all files which:

 - Have no license information of any form

 - Have EXPORT_.*_SYMBOL_GPL inside which was used in the
   initial scan/conversion to ignore the file

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'driver-core-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2019-05-07T20:01:40+00:00

Pull driver core/kobject updates from Greg KH:
 "Here is the "big" set of driver core patches for 5.2-rc1

  There are a number of ACPI patches in here as well, as Rafael said
  they should go through this tree due to the driver core changes they
  required. They have all been acked by the ACPI developers.

  There are also a number of small subsystem-specific changes in here,
  due to some changes to the kobject core code. Those too have all been
  acked by the various subsystem maintainers.

  As for content, it's pretty boring outside of the ACPI changes:
   - spdx cleanups
   - kobject documentation updates
   - default attribute groups for kobjects
   - other minor kobject/driver core fixes

  All have been in linux-next for a while with no reported issues"

* tag 'driver-core-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (47 commits)
  kobject: clean up the kobject add documentation a bit more
  kobject: Fix kernel-doc comment first line
  kobject: Remove docstring reference to kset
  firmware_loader: Fix a typo ("syfs" -> "sysfs")
  kobject: fix dereference before null check on kobj
  Revert "driver core: platform: Fix the usage of platform device name(pdev->name)"
  init/config: Do not select BUILD_BIN2C for IKCONFIG
  Provide in-kernel headers to make extending kernel easier
  kobject: Improve doc clarity kobject_init_and_add()
  kobject: Improve docs for kobject_add/del
  driver core: platform: Fix the usage of platform device name(pdev->name)
  livepatch: Replace klp_ktype_patch's default_attrs with groups
  cpufreq: schedutil: Replace default_attrs field with groups
  padata: Replace padata_attr_type default_attrs field with groups
  irqdesc: Replace irq_kobj_type's default_attrs field with groups
  net-sysfs: Replace ktype default_attrs field with groups
  block: Replace all ktype default_attrs with groups
  samples/kobject: Replace foo_ktype's default_attrs field with groups
  kobject: Add support for default attribute groups to kobj_type
  driver core: Postpone DMA tear-down until after devres release for probe failure
  ...

Merge branches 'acpi-scan', 'acpi-tables', 'acpi-misc' and 'acpi-pm'

2019-05-06T08:49:39+00:00

* acpi-scan:
  ACPI / scan: Add labels for PNP button devices
  ACPI / scan: Simplify acpi_bus_extract_wakeup_device_power_package()

* acpi-tables:
  ACPI / tables: Clean up whitespace

* acpi-misc:
  ACPI / DPTF: Use dev_get_drvdata()
  ACPI: event: replace strcpy() by strscpy()
  ACPI: Fix comment typos

* acpi-pm:
  ACPI: PM: Print debug messages when enabling GPEs for wakeup

ACPICA: Rename nameseg compare macro for clarity

2019-04-09T08:08:28+00:00

ACPICA commit 92ec0935f27e217dff0b176fca02c2ec3d782bb5

ACPI_COMPARE_NAME changed to ACPI_COMPARE_NAMESEG
This clarifies (1) this is a compare on 4-byte namesegs, not
a generic compare. Improves understanding of the code.

Link: https://github.com/acpica/acpica/commit/92ec0935
Signed-off-by: Bob Moore 
Signed-off-by: Erik Schmauss 
Signed-off-by: Rafael J. Wysocki

acpi: Create subtable parsing infrastructure

2019-04-04T16:41:12+00:00

Parsing entries in an ACPI table had assumed a generic header
structure. There is no standard ACPI header, though, so less common
layouts with different field sizes required custom parsers to go through
their subtable entry list.

Create the infrastructure for adding different table types so parsing
the entries array may be more reused for all ACPI system tables and
the common code doesn't need to be duplicated.

Reviewed-by: Rafael J. Wysocki 
Acked-by: Jonathan Cameron 
Tested-by: Jonathan Cameron 
Signed-off-by: Keith Busch 
Tested-by: Brice Goglin 
Signed-off-by: Greg Kroah-Hartman

ACPI / scan: Add labels for PNP button devices

2019-03-26T21:36:46+00:00

Subsequent code treats button_device_ids[] entries differently, and
it's hard to follow without a hint as to which is which.

Add comments to identify the power button, lid, and sleep button
devices.

The "PNP" prefix is owned by Microsoft, so they distribute the
canonical list of "PNP" IDs.

Link: https://uefi.org/PNP_ACPI_Registry
Link: https://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/devids.txt
Signed-off-by: Bjorn Helgaas 
Signed-off-by: Rafael J. Wysocki

ACPI / scan: Simplify acpi_bus_extract_wakeup_device_power_package()

2019-03-26T21:36:46+00:00

acpi_bus_extract_wakeup_device_power_package() is a static function
with a single caller that supplies (device->handle, &device->wakeup).

Simplify the interface so the caller need only supply "device".

This makes it obvious that "wakeup", i.e., &device->wakeup, can never
be NULL, so remove the unnecessary check for that.

Signed-off-by: Bjorn Helgaas 
Signed-off-by: Rafael J. Wysocki

ACPI: Fix comment typos

2019-03-26T21:33:43+00:00

Fix some misspellings in comments.  No functional change intended.

Signed-off-by: Bjorn Helgaas 
Signed-off-by: Rafael J. Wysocki

ACPI / scan: Create platform device for BSG2150 ACPI nodes

2019-02-05T17:38:20+00:00

The Point of View TAB-P1006W-232-3G tablet has an ACPI firmware node with
a HID of BSG2150 describing the 2 Bosch sensors used in the device a
BMC150 compatible accelerometer and a BMC150 compatible magnetometer.

The ACPI firmware node actually contains 3 I2cSerialBusV2 resources,
but this seems to be a copy and paste job from the BSG1160 firmware node
on other devices, since there is no i2c-client listening to the 0x68
address listed in the third resource and the 0x68 address is identical
to the address of the third resource in the BSG1160 nodes, where as the
other 2 addresses are different.

Add the ID to the I2C multi instantiate list, so that the
i2c-multi-instantiate.c driver can handle it;

And add the necessary info to the i2c-multi-instantiate.c driver to
enumerate all I2C slaves correctly.

To avoid triggering the:

        if (i < multi->num_clients) {
                dev_err(dev, "Error finding driver, idx %d\n", i);

Error this commit lists the 3th device in the i2c_inst_data with a
type of "bsg2150_dummy_dev".

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