The following error can be observed at boot: [ 3.717920] ACPI Error: No handler for Region [SYSI] (00000000ab9e62c5) [IPMI] (20230628/evregion-130) [ 3.717928] ACPI Error: Region IPMI (ID=7) has no handler (20230628/exfldio-261) [ 3.717936] No Local Variables are initialized for Method [_GHL] [ 3.717938] No Arguments are initialized for method [_GHL] [ 3.717940] ACPI Error: Aborting method \_SB.PMI0._GHL due to previous error (AE_NOT_EXIST) (20230628/psparse-529) [ 3.717949] ACPI Error: Aborting method \_SB.PMI0._PMC due to previous error (AE_NOT_EXIST) (20230628/psparse-529) [ 3.717957] ACPI: \_SB_.PMI0: _PMC evaluation failed: AE_NOT_EXIST On Dell systems several methods of acpi_power_meter access variables in IPMI region [0], so request module 'ipmi_si' which will load 'acpi_ipmi' and install the region handler accordingly. [0] https://www.dell.com/support/manuals/en-us/redhat-enterprise-linux-v8.0/rhel8_rn_pub/advanced-configuration-and-power-interface-acpi-error-messages-displayed-in-dmesg?guid=guid-0d5ae482-1977-42cf-b417-3ed5c3f5ee62 Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> --- drivers/hwmon/acpi_power_meter.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c index 703666b95bf4..b9db53166bc9 100644 --- a/drivers/hwmon/acpi_power_meter.c +++ b/drivers/hwmon/acpi_power_meter.c @@ -882,6 +882,8 @@ static int acpi_power_meter_add(struct acpi_device *device) strcpy(acpi_device_name(device), ACPI_POWER_METER_DEVICE_NAME); strcpy(acpi_device_class(device), ACPI_POWER_METER_CLASS); device->driver_data = resource; + if (dmi_match(DMI_SYS_VENDOR, "Dell Inc.")) + request_module("ipmi_si"); res = read_capabilities(resource); if (res) -- 2.34.1
