Rafael J. Wysocki ca84f18798 ACPI: power: Save the last known state of each power resource ... Currently, there are two ways to check the state of an ACPI power resource and they may not be consistent with each other. The first one is to evaluate the power resource's _STA object and the other one is to check its reference counter value. However, on some systems the value returned by _STA may not be consistent with the value of the power resource's reference counter (for example, on some systems it returns the same value every time for certain power resources). Moreover, evaluating _STA is unnecessary overhead for a power resource for which it has been evaluated already or whose state is otherwise known, because either the _ON or the _OFF method has been executed for it. For this reason, save the state of each power resource in its struct acpi_power_resource object and use the saved value whenever its state needs to be checked, except when its stats is unknown, in which case the _STA method is evaluated for it and the value returned by that method is saved as the last known state of the power resource. Moreover, drop the power resource _STA method evaluation from acpi_add_power_resource(), so as to avoid doing that unnecessarily for power resources that will never be used. Tested-by: Dave Olsthoorn <dave@bewaar.me> Tested-by: Shujun Wang <wsj20369@163.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2021-05-31 13:59:01 +02:00
..
acpica	ACPICA: ACPI 6.4: add CSI2Bus resource template	2021-04-07 19:09:01 +02:00
apei	Merge branch 'acpi-misc'	2021-04-26 17:04:41 +02:00
arm64	Assorted arm64 fixes and clean-ups, the most important:	2021-05-07 12:11:05 -07:00
dptf	ACPI: DPTF: Support Alder Lake	2020-11-10 18:52:51 +01:00
nfit	ACPI: NFIT: Fix support for variable 'SPA' structure size	2021-05-12 12:38:25 -07:00
numa	CFI on arm64 series for v5.13-rc1	2021-04-27 10:16:46 -07:00
pmic	ACPI: fix various typos in comments	2021-03-19 17:45:49 +01:00
x86	ACPI: PM: s2idle: Add missing LPS0 functions for AMD	2021-05-17 16:22:48 +02:00
ac.c	ACPI: AC: fix some coding style issues	2021-04-08 16:17:32 +02:00
acpi_adxl.c
acpi_amba.c	Merge 5.2-rc6 into char-misc-next	2019-06-23 09:23:33 +02:00
acpi_apd.c	ACPI: APD: fix a block comment align issue	2021-04-08 16:27:02 +02:00
acpi_cmos_rtc.c	ACPI: cmos_rtc: Remove leftover ACPI_MODULE_NAME()	2020-09-25 18:25:51 +02:00
acpi_configfs.c	ACPI: configfs: add missing check after configfs_register_default_group()	2021-01-22 16:35:34 +01:00
acpi_dbg.c	ACPI: debug: Remove the not used function	2020-11-17 18:12:34 +01:00
acpi_extlog.c	ACPI / extlog: Check for RDMSR failure	2020-10-02 19:01:55 +02:00
acpi_fpdt.c	ACPI: tables: introduce support for FPDT table	2021-01-29 19:24:13 +01:00
acpi_ipmi.c	ACPI: ipmi: remove useless return statement for void function	2021-04-08 16:27:02 +02:00
acpi_lpat.c
acpi_lpit.c	ACPI: LPIT: Put the low power idle table after using it	2020-05-09 11:29:16 +02:00
acpi_lpss.c	ACPI: LPSS: add a missed blank line after declarations	2021-04-08 16:27:02 +02:00
acpi_memhotplug.c	acpi,memhotplug: enable MHP_MEMMAP_ON_MEMORY when supported	2021-05-05 11:27:27 -07:00
acpi_pad.c	ACPI: acpi_pad: add a missed blank line after declarations	2021-04-08 16:27:02 +02:00
acpi_platform.c	ACPI: platform: Remove ACPI_MODULE_NAME()	2020-09-25 18:25:51 +02:00
acpi_pnp.c	ACPI: PNP: compare the string length in the matching_id()	2020-12-15 19:30:49 +01:00
acpi_processor.c	Merge branch 'acpi-misc'	2021-04-26 17:04:41 +02:00
acpi_tad.c	ACPI: Use DEVICE_ATTR_<RW|RO|WO> macros	2021-01-22 16:17:19 +01:00
acpi_video.c	Merge branch 'acpi-misc'	2021-04-26 17:04:41 +02:00
acpi_watchdog.c	ACPI: watchdog: Replace open coded variant of resource_union()	2020-11-17 18:06:29 +01:00
battery.c	ACPI: battery: fix some coding style issues	2021-04-08 16:27:02 +02:00
bgrt.c	ACPI: Use DEVICE_ATTR_<RW|RO|WO> macros	2021-01-22 16:17:19 +01:00
blacklist.c	ACPI: blacklist: fix clang warning for unused DMI table	2019-07-11 22:45:00 +02:00
bus.c	ACPI updates for 5.12-rc1	2021-02-20 21:50:59 -08:00
button.c	ACPI: button: fix some coding style issues	2021-04-08 16:27:02 +02:00
container.c	ACPI: container: Remove leftover ACPICA debug functionality	2020-09-25 18:25:51 +02:00
cppc_acpi.c	Merge branch 'acpi-misc'	2021-04-26 17:04:41 +02:00
custom_method.c	ACPI: custom_method: fix a possible memory leak	2021-04-28 19:17:54 +02:00
debugfs.c	ACPI: debugfs: Remove dead ACPICA debug code	2020-09-25 18:25:51 +02:00
device_pm.c	ACPI: PM / fan: Put fan device IDs into separate header file	2021-05-21 19:02:35 +02:00
device_sysfs.c	Merge branch 'acpi-misc'	2021-04-26 17:04:41 +02:00
dock.c	ACPI: dock: fix some coding style issues	2021-04-08 16:27:03 +02:00
ec_sys.c
ec.c	ACPI: EC: Clean up status flags checks in advance_transaction()	2020-11-23 20:01:01 +01:00
event.c	ACPI: Fix whitespace inconsistencies	2020-11-09 19:08:06 +01:00
evged.c	ACPI: GED: fix -Wformat	2020-11-09 19:25:20 +01:00
fan.c	ACPI: PM / fan: Put fan device IDs into separate header file	2021-05-21 19:02:35 +02:00
fan.h	ACPI: PM / fan: Put fan device IDs into separate header file	2021-05-21 19:02:35 +02:00
glue.c	ACPI: bus: Introduce acpi_dev_get() and reuse it in ACPI code	2021-04-13 15:41:11 +02:00
hed.c	ACPI: HED: Drop unused ACPI_MODULE_NAME() definition	2021-03-08 16:51:48 +01:00
internal.h	ACPI: power: Refine turning off unused power resources	2021-05-24 16:08:17 +02:00
ioapic.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
irq.c	ACPI: irq: Prevent unregistering of GIC SGIs	2021-04-23 18:00:52 +01:00
Kconfig	Merge branch 'acpi-tables'	2021-02-25 18:57:40 +01:00
Makefile	Merge branch 'acpi-tables'	2021-02-25 18:57:40 +01:00
nvs.c
osi.c	ACPI: OSI: Shoot duplicate word	2019-11-13 11:12:08 +01:00
osl.c	ACPI: OSL: Clean up printing messages	2021-02-10 19:09:43 +01:00
pci_irq.c	ACPI: PCI: IRQ: Consolidate printing diagnostic messages	2021-03-08 16:51:08 +01:00
pci_link.c	ACPI: utils: Introduce acpi_evaluation_failure_warn()	2021-03-08 19:10:30 +01:00
pci_mcfg.c	PCI: tegra: Add Tegra194 MCFG quirks for ECAM errata	2021-04-16 11:34:17 -05:00
pci_root.c	PCI/ACPI: Clarify message about _OSC failure	2021-01-27 09:38:36 -06:00
pci_slot.c	ACPI: PCI: Remove unused ACPICA debug code	2020-09-25 18:25:51 +02:00
platform_profile.c	ACPI: platform: Add balanced-performance platform profile	2021-02-24 14:52:41 +01:00
power.c	ACPI: power: Save the last known state of each power resource	2021-05-31 13:59:01 +02:00
pptt.c	ACPI: PPTT: Consistently use unsigned int as parameter type	2020-01-07 11:46:36 +01:00
proc.c	ACPI: proc: Remove dead ACPICA debug code	2020-09-25 18:25:51 +02:00
processor_core.c	ACPI: processor: Remove dead ACPICA debug code	2020-09-25 18:25:51 +02:00
processor_driver.c	ACPI: processor: Get rid of ACPICA message printing	2021-03-08 16:51:19 +01:00
processor_idle.c	Merge branches 'acpi-pci' and 'acpi-processor'	2021-04-26 17:03:05 +02:00
processor_pdc.c	ACPI: processor: Get rid of ACPICA message printing	2021-03-08 16:51:19 +01:00
processor_perflib.c	Merge branch 'acpi-misc'	2021-04-26 17:04:41 +02:00
processor_thermal.c	ACPI: processor: Remove the duplicated ACPI_PROCESSOR_CLASS macro	2020-11-17 18:12:34 +01:00
processor_throttling.c	ACPI: utils: Introduce acpi_evaluation_failure_warn()	2021-03-08 19:10:30 +01:00
property.c	ACPI: property: Satisfy kernel doc validator (part 2)	2021-02-12 15:34:14 +01:00
reboot.c	ACPI: reboot: Avoid racing after writing to ACPI RESET_REG	2020-10-16 18:04:52 +02:00
resource.c	ACPI: fix various typos in comments	2021-03-19 17:45:49 +01:00
sbs.c	ACPI: SBS: Simplify the code using module_acpi_driver()	2020-11-17 18:12:34 +01:00
sbshc.c	ACPI: Fix whitespace inconsistencies	2020-11-09 19:08:06 +01:00
sbshc.h	ACPI: Fix whitespace inconsistencies	2020-11-09 19:08:06 +01:00
scan.c	ACPI: power: Refine turning off unused power resources	2021-05-24 16:08:17 +02:00
sleep.c	ACPI: power: Refine turning off unused power resources	2021-05-24 16:08:17 +02:00
sleep.h	Revert "Revert "ACPI: scan: Turn off unused power resources during initialization""	2021-05-10 14:02:17 +02:00
spcr.c	ACPI: Use fallthrough pseudo-keyword	2020-07-09 14:09:28 +02:00
sysfs.c	Merge branches 'acpi-pci' and 'acpi-processor'	2021-04-26 17:03:05 +02:00
tables.c	ACPI: tables: x86: Reserve memory occupied by ACPI tables	2021-03-29 19:26:04 +02:00
thermal.c	- Use the newly introduced 'hot' and 'critical' ops for the acpi	2021-02-22 09:39:11 -08:00
tiny-power-button.c	ACPI: tiny-power-button: Simplify the code using module_acpi_driver()	2020-11-17 18:12:34 +01:00
utils.c	Merge branches 'acpi-cppc', 'acpi-video' and 'acpi-utils'	2021-04-26 17:04:27 +02:00
video_detect.c	ACPI: video: use native backlight for GA401/GA502/GA503	2021-04-21 18:54:41 +02:00
wakeup.c	ACPI: Fix whitespace inconsistencies	2020-11-09 19:08:06 +01:00