You have been subscribed to a public bug: Description: Currently we already support runtime PM for PCIe ports but it is explicitly disabled for hotplug capable ports. There are many reasons for this:
1. It will not work well when ACPI based hotplug is used as the SMI handler will get confused if the port is powered down. 2. For native PCIe hotplug there are problems when the slot is enabled through sysfs like the one here: https://bugzilla.kernel.org/show_bug.cgi?id=193951 Since we are moving from ACPI based hotplug to native PCIe hotplug in case of Thunderbolt, it is essential to get the runtime PM for such ports working properly. We should be able to relax the limitation a bit and allow runtime PM for native PCIe hotplug ports once 2. above has been resolved first. Target Release: 19.04 Target Kernel: 4.19 ** Affects: intel Importance: Medium Status: Fix Released ** Affects: linux (Ubuntu) Importance: Undecided Status: Fix Released ** Tags: intel-kernel-19.04 kernel-da-key -- [Feature] Runtime PM for native PCIe hotplug ports https://bugs.launchpad.net/bugs/1741383 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
