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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-02 13:25:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-02 13:25:52 -0700 |
| commit | 118d6e98293b30aee378a6b08d27a35320a3e34f (patch) | |
| tree | f96ba1dd4e7f6ae7759061e7728f8dc705f73c67 /drivers/acpi/utils.c | |
| parent | 355ba37d756c38962fe9bb616f5f48eb12a7e11e (diff) | |
| parent | 48ccdeddc54771ecdc46fac098bac689e9df24ca (diff) | |
| download | lwn-118d6e98293b30aee378a6b08d27a35320a3e34f.tar.gz lwn-118d6e98293b30aee378a6b08d27a35320a3e34f.zip | |
Merge tag 'acpi-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These update the ACPICA code in the kernel to upstream revision
20200430, fix several reference counting errors related to ACPI
tables, add _Exx / _Lxx support to the GED driver, add a new
acpi_evaluate_reg() helper, add new DPTF battery participant driver
and extend the DPFT power participant driver, improve the handling of
memory failures in the APEI code, add a blacklist entry to the
backlight driver, update the PMIC driver and the processor idle
driver, fix two kobject reference count leaks, and make a few janitory
changes.
Specifics:
- Update the ACPICA code in the kernel to upstream revision 20200430:
- Move acpi_gbl_next_cmd_num definition (Erik Kaneda).
- Ignore AE_ALREADY_EXISTS status in the disassembler when parsing
create operators (Erik Kaneda).
- Add status checks to the dispatcher (Erik Kaneda).
- Fix required parameters for _NIG and _NIH (Erik Kaneda).
- Make acpi_protocol_lengths static (Yue Haibing).
- Fix ACPI table reference counting errors in several places, mostly
in error code paths (Hanjun Guo).
- Extend the Generic Event Device (GED) driver to support _Exx and
_Lxx handler methods (Ard Biesheuvel).
- Add new acpi_evaluate_reg() helper and modify the ACPI PCI hotplug
code to use it (Hans de Goede).
- Add new DPTF battery participant driver and make the DPFT power
participant driver create more sysfs device attributes (Srinivas
Pandruvada).
- Improve the handling of memory failures in APEI (James Morse).
- Add new blacklist entry for Acer TravelMate 5735Z to the backlight
driver (Paul Menzel).
- Add i2c address for thermal control to the PMIC driver (Mauro
Carvalho Chehab).
- Allow the ACPI processor idle driver to work on platforms with only
one ACPI C-state present (Zhang Rui).
- Fix kobject reference count leaks in error code paths in two places
(Qiushi Wu).
- Delete unused proc filename macros and make some symbols static
(Pascal Terjan, Zheng Zengkai, Zou Wei)"
* tag 'acpi-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
ACPI: GED: use correct trigger type field in _Exx / _Lxx handling
ACPI: DPTF: Add battery participant driver
ACPI: DPTF: Additional sysfs attributes for power participant driver
ACPI: video: Use native backlight on Acer TravelMate 5735Z
arm64: acpi: Make apei_claim_sea() synchronise with APEI's irq work
ACPI: APEI: Kick the memory_failure() queue for synchronous errors
mm/memory-failure: Add memory_failure_queue_kick()
ACPI / PMIC: Add i2c address for thermal control
ACPI: GED: add support for _Exx / _Lxx handler methods
ACPI: Delete unused proc filename macros
ACPI: hotplug: PCI: Use the new acpi_evaluate_reg() helper
ACPI: utils: Add acpi_evaluate_reg() helper
ACPI: debug: Make two functions static
ACPI: sleep: Put the FACS table after using it
ACPI: scan: Put SPCR and STAO table after using it
ACPI: EC: Put the ACPI table after using it
ACPI: APEI: Put the HEST table for error path
ACPI: APEI: Put the error record serialization table for error path
...
Diffstat (limited to 'drivers/acpi/utils.c')
| -rw-r--r-- | drivers/acpi/utils.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 804ac0df58ec..838b719ec7ce 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -606,6 +606,31 @@ acpi_status acpi_evaluate_lck(acpi_handle handle, int lock) } /** + * acpi_evaluate_reg: Evaluate _REG method to register OpRegion presence + * @handle: ACPI device handle + * @space_id: ACPI address space id to register OpRegion presence for + * @function: Parameter to pass to _REG one of ACPI_REG_CONNECT or + * ACPI_REG_DISCONNECT + * + * Evaluate device's _REG method to register OpRegion presence. + */ +acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function) +{ + struct acpi_object_list arg_list; + union acpi_object params[2]; + + params[0].type = ACPI_TYPE_INTEGER; + params[0].integer.value = space_id; + params[1].type = ACPI_TYPE_INTEGER; + params[1].integer.value = function; + arg_list.count = 2; + arg_list.pointer = params; + + return acpi_evaluate_object(handle, "_REG", &arg_list, NULL); +} +EXPORT_SYMBOL(acpi_evaluate_reg); + +/** * acpi_evaluate_dsm - evaluate device's _DSM method * @handle: ACPI device handle * @guid: GUID of requested functions, should be 16 bytes |