linux.git/drivers/acpi/bus.c, branch v4.19

ACPI / bus: Only call dmi_check_system() on X86

2018-09-06T10:16:29+00:00

Calling dmi_check_system() early only works on X86. Other
architectures initialize the DMI subsystem later so it's not
ready yet when ACPI itself gets initialized.

In the best case it results in a useless call to a function which
will do nothing. But depending on the dmi implementation, it could
also result in warnings. Best is to not call the function when it
can't work and isn't needed.

Additionally, if anyone ever needs to add non-x86 quirks, it would
surprisingly not work, so document the limitation to avoid confusion.

Signed-off-by: Jean Delvare 
Fixes: cce4f632db20 (ACPI: fix early DSDT dmi check warnings on ia64)
Signed-off-by: Rafael J. Wysocki

ACPI: bus: Fix a pointer coding style issue

2018-08-09T08:57:31+00:00

Fix white space in the argument list of acpi_device_remove().

Signed-off-by: Tom Todd 
Signed-off-by: Rafael J. Wysocki

Revert "ACPI / bus: Parse tables as term_list for Dell XPS 9570 and Precision M5530"

2018-07-20T08:10:49+00:00

Reverts commit 36904703aeee (ACPI / bus: Parse tables as term_list
for Dell XPS 9570 and Precision M5530).

Since commit 5a8361f7ecce (ACPICA: Integrate package handling with
module-level code), acpi_gbl_execute_tables_as_methods is always
true, so we can remove the quirk for XPS 9570/Precision M5530.

Signed-off-by: Kai-Heng Feng 
Signed-off-by: Rafael J. Wysocki

ACPICA: Rename a global for clarity, no functional change

2018-03-18T17:52:00+00:00

Was acpi_gbl_parse_table_as_term_list, changed to:
acpi_gbl_execute_tables_as_methods.

Signed-off-by: Bob Moore 
Signed-off-by: Erik Schmauss 
Signed-off-by: Rafael J. Wysocki

device property: Constify device_get_match_data()

2018-02-12T09:41:11+00:00

Constify device_get_match_data() as OF and ACPI variants return
constant value.

Acked-by: Sakari Ailus 
Signed-off-by: Andy Shevchenko 
Reviewed-by: Mika Westerberg 
Signed-off-by: Rafael J. Wysocki

ACPI / bus: Rename acpi_get_match_data() to acpi_device_get_match_data()

2018-02-12T09:41:10+00:00

Do the renaming to be consistent with its sibling, i.e.
of_device_get_match_data().

No functional change.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Mika Westerberg 
Signed-off-by: Rafael J. Wysocki

ACPI / bus: Remove checks in acpi_get_match_data()

2018-02-12T09:41:10+00:00

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 
Reviewed-by: Mika Westerberg 
Signed-off-by: Rafael J. Wysocki

ACPI / bus: Do not traverse through non-existed device table

2018-02-12T09:41:09+00:00

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 
Reviewed-by: Mika Westerberg 
Signed-off-by: Rafael J. Wysocki

Merge tag 'acpi-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2018-02-09T17:44:25+00:00

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

ACPI / bus: Parse tables as term_list for Dell XPS 9570 and Precision M5530

2018-02-06T17:28:24+00:00

The i2c touchpad on Dell XPS 9570 and Precision M5530 doesn't work out
of box.

The touchpad relies on its _INI method to update its _HID value from
XXXX0000 to SYNA2393.

Also, the _STA relies on value of I2CN to report correct status.

Set acpi_gbl_parse_table_as_term_list so the value of I2CN can be
correctly set up, and _INI can get run. The ACPI table in this machine
is designed to get parsed this way.

Also, change the quirk table to a more generic name.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=198515
Signed-off-by: Kai-Heng Feng 
Signed-off-by: Rafael J. Wysocki