[Bug 2059263] Re: Fix acpi_power_meter accessing IPMI region before it's ready

This bug is awaiting verification that the linux-
nvidia-6.8/6.8.0-1008.8~22.04.1 kernel in -proposed solves the problem.
Please test the kernel and update this bug with the results. If the
problem is solved, change the tag 'verification-needed-jammy-linux-
nvidia-6.8' to 'verification-done-jammy-linux-nvidia-6.8'. If the
problem still exists, change the tag 'verification-needed-jammy-linux-
nvidia-6.8' to 'verification-failed-jammy-linux-nvidia-6.8'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-jammy-linux-nvidia-6.8-v2 verification-needed-jammy-linux-nvidia-6.8

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https://bugs.launchpad.net/bugs/2059263

Title:
Fix acpi_power_meter accessing IPMI region before it's ready

Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Committed
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Won't Fix
Status in linux-oem-6.5 source package in Jammy:
Fix Released
Status in linux source package in Mantic:
Fix Committed
Status in linux-oem-6.5 source package in Mantic:
Invalid
Status in linux source package in Noble:
Fix Released
Status in linux-oem-6.5 source package in Noble:
Invalid

Bug description:
[Impact]
ACPI error can be found in kernel message:
[ 3.717920] ACPI Error: No handler for Region [SYSI] (00000000ab9e62c5) [IPMI] (20230628/evregion-130)

[Fix]
On Dell systems that have IPI0001 device, ensure IPMI region is ready
before acpi_power_meter invokes any ACPI method.

[Test]
With the patch applied, no such error can be found in kernel message.
acpi_power_meter sysfs also works correctly.

[Where problems could occur]
If asynchronous probe is disabled, the device drivers that probe after
acpi_power_meter needs to wait until the completion is done, hence the
boot time might be slower.

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