APPLIED[C/Unstable]: [SRU] [Bionic/Unstable] [PATCH 0/7] Support Power Management for Thunderbolt Controller

Seth Forshee seth.forshee at
Thu Aug 30 13:48:15 UTC 2018

On Tue, Aug 28, 2018 at 06:43:06AM +0000, Kai-Heng Feng wrote:
> BugLink:
> [Impact]
> New TBT controllers may use Native PCIe Enumeration (i.e. just like
> other normal PCIe device listed under lspci) instead of ACPI hotplug.
> Since TBT controller stops getting unplugged from PCIe bus, it draws
> additional power. 
> [Fix]
> Support runtime power management for TBT controllers, so it can be put
> to D3 to save powers.
> [Test]
> I tested and verified this patch series can make Lenovo T480's TBT
> controller enters PCI D3 at runtime.
> [Regression Potential]
> Low. Almost all TBT controllers in the wild still uses ACPI hotplug,
> this series won't affect those users.

Applied patches 3-7 to cosmic/master-next and unstable/master, thanks!

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