linux-stable/drivers/acpi
Vanshidhar Konda f489c94802 ACPI: CPPC: Fix access width used for PCC registers
commit 2f4a4d63a1 ("ACPI: CPPC: Use access_width over bit_width for system
memory accesses") modified cpc_read()/cpc_write() to use access_width to
read CPC registers.

However, for PCC registers the access width field in the ACPI register
macro specifies the PCC subspace ID.  For non-zero PCC subspace ID it is
incorrectly treated as access width. This causes errors when reading
from PCC registers in the CPPC driver.

For PCC registers, base the size of read/write on the bit width field.
The debug message in cpc_read()/cpc_write() is updated to print relevant
information for the address space type used to read the register.

Fixes: 2f4a4d63a1 ("ACPI: CPPC: Use access_width over bit_width for system memory accesses")
Signed-off-by: Vanshidhar Konda <vanshikonda@os.amperecomputing.com>
Tested-by: Jarred White <jarredwhite@linux.microsoft.com>
Reviewed-by: Jarred White <jarredwhite@linux.microsoft.com>
Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Cc: 5.15+ <stable@vger.kernel.org> # 5.15+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2024-04-22 18:58:46 +02:00
..
acpica ACPICA: debugger: check status of acpi_evaluate_object() in acpi_db_walk_for_fields() 2024-03-26 13:06:47 +01:00
apei ACPI: APEI: EINJ: mark remove callback as non-__exit 2024-03-26 12:16:06 +01:00
arm64 ACPI: AGDI: Convert to platform remove callback returning void 2024-02-27 15:57:33 +01:00
dptf ACPI: DPTF: Convert to platform remove callback returning void 2024-02-27 15:57:33 +01:00
nfit ACPI: NFIT: Switch to use acpi_evaluate_dsm_typed() 2024-02-02 17:31:50 +01:00
numa cxl/region: Deal with numa nodes not enumerated by SRAT 2024-03-12 14:54:03 -07:00
pmic ACPI: PMIC: Add comments with DSDT power opregion field names 2023-01-30 16:47:13 +01:00
riscv ACPI: RISC-V: Add CPPC driver 2024-03-19 18:30:54 -07:00
x86 Merge branches 'acpi-x86', 'acpi-video', 'acpi-apei' and 'acpi-misc' 2024-03-11 14:42:30 +01:00
ac.c ACPI: AC: Rename ACPI device from device to adev 2023-10-17 15:43:30 +02:00
acpi_adxl.c
acpi_apd.c ACPI: processor: Check for null return of devm_kzalloc() in fch_misc_setup() 2023-03-20 18:04:58 +01:00
acpi_cmos_rtc.c ACPI: TAD: Install SystemCMOS address space handler for ACPI000E 2023-08-17 20:01:24 +02:00
acpi_configfs.c
acpi_dbg.c
acpi_extlog.c ACPI: extlog: Clear Extended Error Log status when RAS_CEC handled the error 2023-12-13 13:50:00 +01:00
acpi_ffh.c ACPI: FFH: Drop the inclusion of linux/arm-smccc.h 2023-06-12 19:28:20 +02:00
acpi_fpdt.c ACPI: FPDT: properly handle invalid FPDT subtables 2023-10-03 21:12:22 +02:00
acpi_ipmi.c
acpi_lpat.c
acpi_lpit.c ACPI: LPIT: Avoid u32 multiplication overflow 2023-11-22 20:55:20 +01:00
acpi_lpss.c Merge branches 'acpi-resource', 'acpi-numa', 'acpi-soc' and 'acpi-misc' 2024-01-04 13:23:31 +01:00
acpi_memhotplug.c mm/memory_hotplug: allow memmap on memory hotplug request to fallback 2023-08-21 13:37:48 -07:00
acpi_pad.c Many singleton patches against the MM code. The patch series which are 2023-11-02 19:38:47 -10:00
acpi_pcc.c ACPI: PCC: Setup PCC Opregion handler only if platform interrupt is available 2022-11-23 19:06:56 +01:00
acpi_platform.c ACPI: platform: Move SMB0001 HID to the header and reuse 2023-07-04 19:28:20 +02:00
acpi_pnp.c ACPI: PNP: Introduce list of known non-PNP devices 2023-01-17 12:52:11 +01:00
acpi_processor.c Merge branches 'acpi-x86', 'acpi-video', 'acpi-apei' and 'acpi-misc' 2024-03-11 14:42:30 +01:00
acpi_tad.c ACPI: TAD: Convert to platform remove callback returning void 2024-02-27 15:57:33 +01:00
acpi_video.c ACPI: video: Handle fetching EDID that is longer than 256 bytes 2024-02-08 14:03:47 +01:00
acpi_watchdog.c ACPI: use %pe for better readability of errors while printing 2024-02-16 19:31:12 +01:00
battery.c ACPI: bus: Add context argument to acpi_dev_install_notify_handler() 2023-10-06 17:32:51 +02:00
bgrt.c
blacklist.c
bus.c ACPI: bus: make acpi_bus_type const 2024-02-12 14:42:48 +01:00
button.c ACPI: button: trigger wakeup key events 2023-12-29 18:47:49 +01:00
container.c
cppc_acpi.c ACPI: CPPC: Fix access width used for PCC registers 2024-04-22 18:58:46 +02:00
debugfs.c
device_pm.c ACPI: PM: Add acpi_device_fix_up_power_children() function 2023-11-20 17:31:49 +01:00
device_sysfs.c Merge branches 'acpi-ec', 'acpi-sysfs', 'acpi-misc' and 'acpi-uid' 2023-10-26 14:59:52 +02:00
dock.c ACPI: Document handle_eject_request() arguments 2024-03-13 21:02:33 +01:00
ec.c Revert "ACPI: EC: Use a spin lock without disabing interrupts" 2024-02-22 10:35:54 +01:00
ec_sys.c
event.c
evged.c ACPI: GED: Convert to platform remove callback returning void 2024-02-27 15:57:33 +01:00
fan.h
fan_attr.c ACPI: fan: Convert to use sysfs_emit_at() API 2022-12-06 12:44:14 +01:00
fan_core.c ACPI: fan: Convert to platform remove callback returning void 2024-02-27 15:57:34 +01:00
glue.c ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops 2023-01-10 20:23:48 +01:00
hed.c ACPI: bus: Add context argument to acpi_dev_install_notify_handler() 2023-10-06 17:32:51 +02:00
internal.h Merge branches 'acpi-tables', 'acpi-processor', 'acpi-property' and 'acpi-thermal' 2024-03-11 14:33:32 +01:00
ioapic.c ACPI: Silence missing prototype warnings 2022-12-30 19:12:30 +01:00
irq.c ACPI: irq: Fix incorrect return value in acpi_register_gsi() 2023-10-18 13:11:04 +02:00
Kconfig RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
Makefile ACPI: Drop the custom_method debugfs interface 2024-02-22 11:17:48 +01:00
mipi-disco-img.c ACPI: property: Polish ignoring bad data nodes 2024-02-26 17:56:11 +01:00
nvs.c
osi.c ACPI: OSI: refactor deprecated strncpy() 2023-09-21 20:55:43 +02:00
osl.c ACPI: OSL: Use spin locks without disabling interrupts 2023-12-28 14:13:52 +01:00
pci_irq.c ACPI / PCI: fix LPIC IRQ model default PCI IRQ polarity 2022-11-26 12:57:18 +00:00
pci_link.c
pci_mcfg.c
pci_root.c ACPI: PCI: Switch to use acpi_evaluate_dsm_typed() 2023-10-03 15:46:14 +02:00
pci_slot.c ACPI: use %pe for better readability of errors while printing 2024-02-16 19:31:12 +01:00
pfr_telemetry.c ACPI: pfr_telemetry: Convert to platform remove callback returning void 2024-02-27 15:57:34 +01:00
pfr_update.c ACPI: pfr_update: Convert to platform remove callback returning void 2024-02-27 15:57:34 +01:00
platform_profile.c
power.c ACPI: PM: Do not turn of unused power resources on the Toshiba Click Mini 2023-04-27 18:44:43 +02:00
pptt.c ACPI: PPTT: Fix to avoid sleep in the atomic context when PPTT is absent 2023-03-14 20:34:38 +01:00
prmt.c ACPI: PRM: Annotate struct prm_module_info with __counted_by 2023-10-03 21:24:10 +02:00
proc.c
processor_core.c arm64, irqchip/gic-v3, ACPI: Move MADT GICC enabled check into a helper 2023-10-24 15:12:09 +01:00
processor_driver.c ACPI: cpufreq: Add highest perf change notification 2024-01-31 14:54:50 +01:00
processor_idle.c ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() 2024-02-15 20:26:40 +01:00
processor_pdc.c ACPI: processor: Fix uninitialized access of buf in acpi_set_pdc_bits() 2023-09-18 12:16:16 +02:00
processor_perflib.c ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily 2022-12-30 19:10:02 +01:00
processor_thermal.c ACPI: processor: reduce CPUFREQ thermal reduction pctg for Tegra241 2023-12-06 20:52:47 +01:00
processor_throttling.c ACPI: processor: throttling: remove variable count 2022-10-28 19:02:45 +02:00
property.c ACPI: property: Ignore bad graph port nodes on Dell XPS 9315 2024-02-15 21:06:06 +01:00
reboot.c
resource.c ACPI: resource: Use IRQ override on Maibenben X565 2024-03-05 21:33:38 +01:00
sbs.c ACPI: SBS: Fix handling of Smart Battery Selectors 2023-03-30 19:01:05 +02:00
sbshc.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
sbshc.h
scan.c ACPI: scan: Do not increase dep_unmet for already met dependencies 2024-04-08 16:44:14 +02:00
sleep.c More ACPI updates for 6.9-rc1 2024-03-19 11:15:14 -07:00
sleep.h ACPI: s2idle: Add a new ->check() callback for platform_s2idle_ops 2022-09-09 17:37:40 +02:00
spcr.c ACPI: SPCR: Amend indentation 2023-03-27 20:50:28 +02:00
sysfs.c ACPI: sysfs: Enable ACPI sysfs support for CCEL records 2023-03-27 20:43:58 +02:00
tables.c lib/firmware_table: Provide buffer length argument to cdat_table_parse() 2024-03-13 00:03:21 -07:00
thermal.c ACPI: thermal: Register thermal zones without valid trip points 2024-04-02 21:38:45 +02:00
thermal_lib.c ACPI: thermal_lib: Initialize temp_decik to zero 2024-02-22 20:36:17 +01:00
tiny-power-button.c ACPI: tiny-power-button: Eliminate the driver notify callback 2023-06-16 19:48:09 +02:00
utils.c ACPI: utils: Make acpi_handle_path() not static 2024-02-15 21:06:06 +01:00
video_detect.c ACPI: video: Add acpi_backlight=vendor quirk for Toshiba Portégé R100 2023-10-03 20:33:58 +02:00
viot.c ACPI: VIOT: Initialize the correct IOMMU fwspec 2023-03-30 19:20:42 +02:00
wakeup.c