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Mario Limonciello 7fb0cd571e ACPI: processor idle: Check for architectural support for LPI 
commit eb087f3059 upstream.

When `osc_pc_lpi_support_confirmed` is set through `_OSC` and `_LPI` is
populated then the cpuidle driver assumes that LPI is fully functional.

However currently the kernel only provides architectural support for LPI
on ARM.  This leads to high power consumption on X86 platforms that
otherwise try to enable LPI.

So probe whether or not LPI support is implemented before enabling LPI in
the kernel.  This is done by overloading `acpi_processor_ffh_lpi_probe` to
check whether it returns `-EOPNOTSUPP`. It also means that all future
implementations of `acpi_processor_ffh_lpi_probe` will need to follow
these semantics as well.

Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2022-04-20 09:36:06 +02:00
..
acpica ACPICA: Avoid walking the ACPI Namespace if it is not there 2022-04-08 13:58:38 +02:00
apei ACPI/APEI: Limit printable size of BERT table data 2022-04-08 13:58:38 +02:00
arm64 ACPI/IORT: Check node revision for PMCG resources 2022-02-09 18:16:22 +00:00
dptf ACPI: DPTF: Support Raptor Lake 2022-01-17 19:45:38 +01:00
nfit ACPI: NFIT: Import GUID before use 2021-12-18 08:12:40 -08:00
numa cxl for 5.17 2022-01-12 15:57:59 -08:00
pmic ACPI: PMIC: xpower: Fix _TMP ACPI errors 2021-12-08 15:34:57 +01:00
x86 ACPI / x86: Add skip i2c clients quirk for Lenovo Yoga Tablet 1050F/L 2022-04-08 13:58:38 +02:00
Kconfig ACPI: require CRC32 to build 2022-01-31 20:16:28 +01:00
Makefile Kbuild updates for v5.17 2022-01-19 11:15:19 +02:00
ac.c ACPI / x86: Introduce an acpi_quirk_skip_acpi_ac_and_battery() helper 2022-01-04 15:40:48 +01:00
acpi_adxl.c
…
acpi_amba.c ACPI: AMBA: Fix resource name in /proc/iomem 2021-06-30 20:01:10 +02:00
acpi_apd.c More ACPI updates for 5.17-rc1 2022-01-18 08:51:51 +02:00
acpi_cmos_rtc.c
…
acpi_configfs.c ACPI: configfs: Make get_header() to return error pointer 2021-07-16 19:20:28 +02:00
acpi_dbg.c
…
acpi_extlog.c
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acpi_fpdt.c ACPI: tables: FPDT: Do not print FW_BUG message if record types are reserved 2021-08-25 20:01:07 +02:00
acpi_ipmi.c
…
acpi_lpat.c
…
acpi_lpit.c
…
acpi_lpss.c Merge branches 'acpi-glue', 'acpi-pnp', 'acpi-processor' and 'acpi-soc' 2021-11-02 18:36:40 +01:00
acpi_memhotplug.c ACPI: memhotplug: use a single static memory group for a single memory device 2021-09-08 11:50:23 -07:00
acpi_pad.c ACPI: processor: Replace deprecated CPU-hotplug functions 2021-08-04 20:25:54 +02:00
acpi_pcc.c ACPI: PCC: pcc_ctx can be static 2022-01-12 19:40:31 +01:00
acpi_platform.c
…
acpi_pnp.c ACPI: PNP: remove duplicated BRI0A49 and BDP3336 entries 2021-09-24 18:12:15 +02:00
acpi_processor.c ACPI: processor: Replace deprecated CPU-hotplug functions 2021-08-04 20:25:54 +02:00
acpi_tad.c
…
acpi_video.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
acpi_watchdog.c
…
battery.c ACPI: battery: Add device HID and quirk for Microsoft Surface Go 3 2022-03-28 10:03:20 +02:00
bgrt.c ACPI: bgrt: Use sysfs_emit 2021-06-23 19:27:50 +02:00
blacklist.c
…
bus.c Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag" 2022-04-08 13:57:25 +02:00
button.c ACPI: button: Add DMI quirk for Lenovo Yoga 9 (14INTL5) 2021-08-25 19:57:01 +02:00
container.c
…
cppc_acpi.c ACPI: CPPC: Avoid out of bounds access when parsing _CPC data 2022-04-08 13:58:58 +02:00
custom_method.c
…
debugfs.c
…
device_pm.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
device_sysfs.c ACPI: sysfs: use default_groups in kobj_type 2021-12-28 19:15:41 +01:00
dock.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
ec.c ACPI: PM: s2idle: Cancel wakeup before dispatching EC GPE 2022-02-07 21:02:31 +01:00
ec_sys.c ACPI: EC: Mark the ec_sys write_support param as module_param_hw() 2021-12-01 20:19:30 +01:00
event.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
evged.c
…
fan.c
…
fan.h ACPI: DPTF: Support Raptor Lake 2022-01-17 19:45:38 +01:00
glue.c Revert "ACPI: scan: Release PM resources blocked by unused objects" 2021-11-17 17:05:41 +01:00
hed.c
…
internal.h ACPI: scan: Change acpi_scan_init() return value type to void 2022-01-12 15:58:49 +01:00
ioapic.c
…
irq.c
…
nvs.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
osi.c
…
osl.c Revert "ACPI: Add memory semantics to acpi_os_map_memory()" 2021-09-23 20:39:36 +02:00
pci_irq.c
…
pci_link.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
pci_mcfg.c
…
pci_root.c Merge branches 'acpi-scan', 'acpi-pm', 'acpi-power' and 'acpi-pci' 2022-01-10 16:48:27 +01:00
pci_slot.c
…
pfr_telemetry.c ACPI: pfr_telemetry: Fix info leak in pfrt_log_ioctl() 2022-01-10 16:36:45 +01:00
pfr_update.c ACPI: pfr_update: Fix return value check in pfru_write() 2022-01-06 18:53:31 +01:00
platform_profile.c ACPI: platform-profile: call sysfs_notify() from platform_profile_store() 2021-08-16 18:32:02 +02:00
power.c Merge branches 'acpi-scan', 'acpi-pm', 'acpi-power' and 'acpi-pci' 2022-01-10 16:48:27 +01:00
pptt.c topology: Represent clusters of CPUs within a die 2021-10-15 11:25:15 +02:00
prmt.c ACPI: PRM: Handle memory allocation and memory remap failure 2021-10-26 15:29:07 +02:00
proc.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
processor_core.c
…
processor_driver.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
processor_idle.c ACPI: processor idle: Check for architectural support for LPI 2022-04-20 09:36:06 +02:00
processor_pdc.c
…
processor_perflib.c ACPI: processor_perflib: Cleanup print messages 2021-06-07 15:36:46 +02:00
processor_thermal.c ACPI: processor: thermal: avoid cpufreq_get_policy() 2021-12-30 19:39:34 +01:00
processor_throttling.c Merge branches 'acpi-dptf' and 'acpi-messages' 2021-06-29 15:50:37 +02:00
property.c ACPI: properties: Consistently return -ENOENT if there are no more references 2022-04-08 13:57:25 +02:00
reboot.c ACPI: reboot: Unify the message printing 2021-06-07 15:36:46 +02:00
resource.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
sbs.c ACPI: sbs: Unify the message printing 2021-06-07 15:36:46 +02:00
sbshc.c Merge branches 'acpi-ec', 'acpi-apei', 'acpi-soc' and 'acpi-misc' 2021-06-29 15:51:25 +02:00
sbshc.h
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scan.c Revert "ACPI: scan: Do not add device IDs from _CID if _HID is not valid" 2022-03-16 11:23:05 +01:00
sleep.c PM: s2idle: ACPI: Fix wakeup interrupts handling 2022-02-07 21:02:31 +01:00
sleep.h
…
spcr.c ACPI: SPCR: check if table->serial_port.access_width is too wide 2022-01-11 16:39:14 +01:00
sysfs.c ACPI: sysfs: use default_groups in kobj_type 2021-12-28 19:15:41 +01:00
tables.c ACPI: tables: Quiet ACPI table not found warning 2022-02-15 20:03:16 +01:00
thermal.c Merge branches 'acpi-tables', 'acpi-numa', 'acpi-sysfs', 'acpi-cppc', 'acpi-thermal' and 'acpi-battery' 2022-01-10 17:22:15 +01:00
tiny-power-button.c
…
utils.c ACPI: utils: Fix reference counting in for_each_acpi_dev_match() 2021-07-19 16:22:01 +02:00
video_detect.c ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU 2022-03-28 10:03:20 +02:00
viot.c ACPI: Add driver for the VIOT table 2021-06-25 15:02:43 +02:00
wakeup.c
…