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65ea8f2c6e
linux/drivers/acpi
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Mario Limonciello 65ea8f2c6e ACPI: processor idle: Fix up C-state latency if not ordered 
Generally, the C-state latency is provided by the _CST method or
FADT, but some OEM platforms using AMD Picasso, Renoir, Van Gogh,
and Cezanne set the C2 latency greater than C3's which causes the
C2 state to be skipped.

That will block the core entering PC6, which prevents S0ix working
properly on Linux systems.

In other operating systems, the latency values are not validated and
this does not cause problems by skipping states.

To avoid this issue on Linux, detect when latencies are not an
arithmetic progression and sort them.

Link: 026d186e45
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1230#note_712174
Suggested-by: Prike Liang <Prike.Liang@amd.com>
Suggested-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-05-17 17:05:30 +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: Drop unused local variables and related code 2021-01-07 17:41:28 +01:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
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 Merge branch 'acpi-pm' 2021-05-13 20:39:58 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482 2019-06-19 17:09:52 +02:00
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: fan: Initialize performance state sysfs attribute 2020-11-16 15:18:38 +01:00
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 Merge branch 'acpi-pm' 2021-05-13 20:39:58 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
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 Merge branch 'acpi-pm' 2021-05-13 20:39:58 +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 ACPI: processor idle: Fix up C-state latency if not ordered 2021-05-17 17:05:30 +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 Merge branch 'acpi-pm' 2021-05-13 20:39:58 +02:00
sleep.c ACPI: PM: s2idle: Move x86-specific code to the x86 directory 2020-12-17 20:30:02 +01:00
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