From: Kai-Heng Feng <kai.heng.feng@canonical.com>
To: jdelvare@suse.com, linux@roeck-us.net
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>,
linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v4 2/2] hwmon: (acpi_power_meter) Ensure IPMI space handler is ready on Dell systems
Date: Tue, 9 Jan 2024 12:12:17 +0800 [thread overview]
Message-ID: <20240109041218.980674-2-kai.heng.feng@canonical.com> (raw)
In-Reply-To: <20240109041218.980674-1-kai.heng.feng@canonical.com>
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 wait until IPMI space handler is installed by
acpi_ipmi and also wait until SMI is selected to make the space handler
fully functional.
[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@canonical.com>
---
v4:
- No change.
v3:
- Use helper.
- Use return value to print warning message.
v2:
- Use completion instead of request_module().
drivers/hwmon/acpi_power_meter.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c
index 703666b95bf4..33fb9626633d 100644
--- a/drivers/hwmon/acpi_power_meter.c
+++ b/drivers/hwmon/acpi_power_meter.c
@@ -883,6 +883,12 @@ static int acpi_power_meter_add(struct acpi_device *device)
strcpy(acpi_device_class(device), ACPI_POWER_METER_CLASS);
device->driver_data = resource;
+ if (dmi_match(DMI_SYS_VENDOR, "Dell Inc.") &&
+ acpi_dev_get_first_match_dev("IPI0001", NULL, -1)) {
+ if (acpi_wait_for_acpi_ipmi())
+ dev_warn(&device->dev, "Waiting for ACPI IPMI timeout");
+ }
+
res = read_capabilities(resource);
if (res)
goto exit_free;
--
2.34.1
next parent reply other threads:[~2024-01-09 4:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240109041218.980674-1-kai.heng.feng@canonical.com>
2024-01-09 4:12 ` Kai-Heng Feng [this message]
2024-01-09 15:23 ` [PATCH v4 2/2] hwmon: (acpi_power_meter) Ensure IPMI space handler is ready on Dell systems Guenter Roeck
2024-01-09 21:28 ` Corey Minyard
2024-01-09 22:32 ` Guenter Roeck
2024-01-09 23:52 ` Corey Minyard
2024-03-13 6:24 ` Kai-Heng Feng
2024-03-12 6:43 ` Kai-Heng Feng
2024-01-13 9:11 ` kernel test robot
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