power_ctrl_logic error messages appear on non-IPU6 platforms: probe of 0000:00:00.0 failed with error -16

While this only happens on oem-5.10 kernels, so only Focal should be nominated for a fix.

Hi

power_ctrl_logic error messages appear on non-IPU6 platforms

what's the non-IPU6 platforms means?

While power_ctrl_logic is built into oem-5.10 kernel, when booted from
other platforms do not have IPU6 cameras, I suppose the unrelated modules
should be either not probed, or don't print error messages while it's
already known there is no such hardware on it. We'd like to review the
prerequisite condition for this module, so that it doesn't give confusing
false alarms.

On Thu, Jun 3, 2021 at 3:00 PM Wangyating <email address hidden>
wrote:

> Hi
>
> power_ctrl_logic error messages appear on non-IPU6 platforms
>
> what's the non-IPU6 platforms means?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1930673
>
> Title:
> power_ctrl_logic error messages appear on non-IPU6 platforms: probe of
> 0000:00:00.0 failed with error -16
>
> Status in linux-oem-5.10 package in Ubuntu:
> Invalid
> Status in linux-oem-5.10 source package in Focal:
> New
>
> Bug description:
> On some random Dell device with recent oem-5.10 kernel with IPU6
> camera support, power_ctrl_logic error messages pop in the dmesg as a
> false alarm:
>
> power_ctrl_logic: probe of 0000:00:00.0 failed with error -16
>
> ProblemType: Bug
> DistroRelease: Ubuntu 20.04
> Package: linux-image-5.10.0-1029-oem 5.10.0-1029.30
> ProcVersionSignature: Ubuntu 5.10.0-1029.30-oem 5.10.35
> Uname: Linux 5.10.0-1029-oem x86_64
> ApportVersion: 2.20.11-0ubuntu27.18
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: u 2123 F.... pulseaudio
> CasperMD5CheckResult: skip
> Date: Thu Jun 3 02:10:51 2021
> DistributionChannelDescriptor:
> # This is the distribution channel descriptor for the OEM CDs
> # For more information see
> http://wiki.ubuntu.com/DistributionChannelDescriptor
> canonical-oem-somerville-focal-amd64-20200502-85+fossa-bulbasaur+X54
> InstallationDate: Installed on 2021-04-08 (56 days ago)
> InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary
> 20200502-05:58
> MachineType: Dell Inc. XPS 13 9310
> ProcEnviron:
> TERM=xterm-256color
> PATH=(custom, no user)
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> ProcFB: 0 i915drmfb
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.10.0-1029-oem
> root=UUID=6dcf5fd1-b678-4c17-90b1-66d64f37ce9d ro quiet splash vt.handoff=7
> PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
> PulseAudio daemon running, or not running as session daemon.
> RelatedPackageVersions:
> linux-restricted-modules-5.10.0-1029-oem N/A
> linux-backports-modules-5.10.0-1029-oem N/A
> linux-firmware 1.187.12
> SourcePackage: linux-oem-5.10
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 12/10/2020
> dmi.bios.release: 1.2
> dmi.bios.vendor: Dell Inc.
> dmi.bios.version: 1.2.5
> dmi.board.vendor: Dell Inc.
> dmi.chassis.type: 10
> dmi.chassis.vendor: Dell Inc.
> dmi.modalias:
> dmi:bvnDellInc.:bvr1.2.5:bd12/10/2020:br1.2:svnDellInc.:pnXPS139310:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr:
> dmi.product.family: XPS
> dmi.product.name: XPS 13...

Hi

power-control device (8086 9a14, HID INT3472) is the power control logic only for MIPI cameras. if the system does not have MIPI camera, this device should not be registered by BIOS. or should not be in DSDT. even the driver module(ko) will not be loaded.

can you ask BIOS engineer to check the settings?

Set importance to LOW as there is no actual damage found. Notified Dell for this.