** Changed in: intel
Status: Triaged => Fix Released
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https://bugs.launchpad.net/bugs/1741389
Title:
[Bug] Native PCIe hotplug resource allocation fails when ACPI Notify()
is enabled
Status in intel:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Bug description:
Description
Between legacy (BIOS assisted) and full RTD3 native PCIe hotplug there
is a combination called "native" where Thunderbolt controller is not
present all the time but hotplugged when a device is connected. In
order to get NHI and xHCI enumerated the BIOS triggers ACPI Notify()
in addition to the native PCIe hotplug interrupt to the root port.
If the ACPI Notify() handler runs before native PCIe hotplug handler
it does the minimal topology resource allocation and makes future
chain extension impossible.
This needs to be fixed so that in both cases we distribute resources
accordingly.
HW: Platform-Independent
Target Kernel: 4.18
Target Release: 18.10
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