Unreadable thunderbolt nvm_version under sysfs

Bug #2085945 reported by AceLan Kao
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
HWE Next
New
Undecided
Unassigned
linux (Ubuntu)
New
Undecided
Unassigned
Noble
Invalid
Undecided
Unassigned
Oracular
In Progress
Undecided
AceLan Kao
linux-oem-6.11 (Ubuntu)
New
Undecided
Unassigned
Noble
In Progress
Undecided
AceLan Kao
Oracular
Invalid
Undecided
Unassigned

Bug Description

[Impact]
Upgrading the TBT firmware through fwupdmgr and encounter the error.
It was working well with 6.8 kernel.

ubuntu@localhost:~$ sudo fwupdtool get-updates
Loading… [****************** ]02:20:03.374 FuEngine failed to add device /sys/devices/pci0000:00/0000:00:0d.3/domain1/1-0/1-1/usb4_port1/1-1:1.1: failed to read NVM
Loading… [********************* ]02:20:03.479 FuPluginIntelMe failed to get public key using file-id 0x40002300: generic failure [0xb]
Loading… [************************************** ]

[Fix]
Mika helps to fix the issue
https://patchwork.kernel.org<email address hidden>/

The issue is introduced by below commit in v6.11-rc1, so 6.8 is not affected.
ff6ab055e070 thunderbolt: Add receiver lane margining support for retimers

[Test]
Plug TBT dock and run `sudo fwupdtool get-updates`, there should be no "failed to read NVM" error.

[Where problems could occur]
The retimer node should not be exposed to the system, the patch fixes the max index to elimite the nodes. It should be safe and not seems to introduce regressions.

AceLan Kao (acelankao)
Changed in linux (Ubuntu Noble):
status: New → Invalid
Changed in linux (Ubuntu Oracular):
status: New → In Progress
assignee: nobody → AceLan Kao (acelankao)
Changed in linux-oem-6.11 (Ubuntu Noble):
status: New → In Progress
assignee: nobody → AceLan Kao (acelankao)
Changed in linux-oem-6.11 (Ubuntu Oracular):
status: New → Invalid
description: updated
AceLan Kao (acelankao)
tags: added: jira-cpl-46 oem-priority
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