Public bug reported:
[Impact]
On Intel Maple Ridge, when hotplug TBT4 dock, PCIe bus show error
"severity=Uncorrected (Non-Fatal)",
and failed to probe.
[Fix]
Re-enable PCIe port LTR after reset or hotplug, and probe it properly.
[Test]
Verified on HW with TBT4 dock. it works fine.
Also tested Tiger Lake-LP Thunderbolt 4, tbt4 dock works fine.
Tested on AMD Cezanne, PCIe works fine, it doesn't support thunderbolt.
[Where problems could occur]
PCI bus may break.
** Affects: hwe-next
Importance: Undecided
Assignee: AaronMa (mapengyu)
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-oem-5.13 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-oem-5.14 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-oem-5.13 (Ubuntu Focal)
Importance: Undecided
Status: New
** Affects: linux-oem-5.14 (Ubuntu Focal)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Impish)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Tags: oem-priority originate-from-1945164 sutton
** Tags added: oem-priority originate-from-1945164 sutton
** Also affects: linux-oem-5.13 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1954646
Title:
[SRU][I/J/OEM-5.13/OEM-5.14] Fix pci port lost when hotplug dock
Status in HWE Next:
New
Status in linux package in Ubuntu:
New
Status in linux-oem-5.13 package in Ubuntu:
New
Status in linux-oem-5.14 package in Ubuntu:
New
Status in linux-oem-5.13 source package in Focal:
New
Status in linux-oem-5.14 source package in Focal:
New
Status in linux source package in Impish:
New
Status in linux source package in Jammy:
New
Bug description:
[Impact]
On Intel Maple Ridge, when hotplug TBT4 dock, PCIe bus show error
"severity=Uncorrected (Non-Fatal)",
and failed to probe.
[Fix]
Re-enable PCIe port LTR after reset or hotplug, and probe it properly.
[Test]
Verified on HW with TBT4 dock. it works fine.
Also tested Tiger Lake-LP Thunderbolt 4, tbt4 dock works fine.
Tested on AMD Cezanne, PCIe works fine, it doesn't support thunderbolt.
[Where problems could occur]
PCI bus may break.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1954646/+subscriptions
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