WSL2-Linux-Kernel/drivers/acpi
Mario Limonciello 8b356e536e ACPI: CPPC: Don't require _OSC if X86_FEATURE_CPPC is supported
commit 72f2ecb7ec ("ACPI: bus: Set CPPC _OSC bits for all and
when CPPC_LIB is supported") added support for claiming to
support CPPC in _OSC on non-Intel platforms.

This unfortunately caused a regression on a vartiety of AMD
platforms in the field because a number of AMD platforms don't set
the `_OSC` bit 5 or 6 to indicate CPPC or CPPC v2 support.

As these AMD platforms already claim CPPC support via a dedicated
MSR from `X86_FEATURE_CPPC`, use this enable this feature rather
than requiring the `_OSC` on platforms with a dedicated MSR.

If there is additional breakage on the shared memory designs also
missing this _OSC, additional follow up changes may be needed.

Fixes: 72f2ecb7ec ("Set CPPC _OSC bits for all and when CPPC_LIB is supported")
Reported-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-07-05 20:36:11 +02:00
..
acpica
apei
arm64
dptf
nfit
numa
pmic
x86
Kconfig
Makefile
ac.c
acpi_adxl.c
acpi_amba.c
acpi_apd.c
acpi_cmos_rtc.c
acpi_configfs.c
acpi_dbg.c
acpi_extlog.c
acpi_fpdt.c
acpi_ipmi.c
acpi_lpat.c
acpi_lpit.c
acpi_lpss.c
acpi_memhotplug.c
acpi_pad.c
acpi_pcc.c
acpi_platform.c
acpi_pnp.c
acpi_processor.c
acpi_tad.c
acpi_video.c
acpi_watchdog.c
battery.c
bgrt.c
blacklist.c
bus.c
button.c
container.c
cppc_acpi.c ACPI: CPPC: Don't require _OSC if X86_FEATURE_CPPC is supported 2022-07-05 20:36:11 +02:00
custom_method.c
debugfs.c
device_pm.c
device_sysfs.c
dock.c
ec.c
ec_sys.c
event.c
evged.c
fan.h
fan_attr.c
fan_core.c
glue.c
hed.c
internal.h
ioapic.c
irq.c
nvs.c
osi.c
osl.c
pci_irq.c
pci_link.c
pci_mcfg.c
pci_root.c
pci_slot.c
pfr_telemetry.c
pfr_update.c
platform_profile.c
power.c
pptt.c
prmt.c
proc.c
processor_core.c
processor_driver.c
processor_idle.c
processor_pdc.c
processor_perflib.c
processor_thermal.c
processor_throttling.c
property.c
reboot.c
resource.c
sbs.c
sbshc.c
sbshc.h
scan.c
sleep.c
sleep.h
spcr.c
sysfs.c
tables.c
thermal.c
tiny-power-button.c
utils.c
video_detect.c
viot.c
wakeup.c