** Changed in: linux-oem-5.14 (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-5.13 (Ubuntu)
Status: New => Invalid
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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:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-5.13 package in Ubuntu:
Invalid
Status in linux-oem-5.14 package in Ubuntu:
Invalid
Status in linux-oem-5.13 source package in Focal:
Fix Released
Status in linux-oem-5.14 source package in Focal:
Fix Released
Status in linux source package in Impish:
Fix Committed
Status in linux source package in Jammy:
Fix Released
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.
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