APPLIED Re: [OEM-OSP1-B] [PATCH 0/4] Make hotplugging docking station to Thunderbolt port more reliable

[Timo Aaltonen]

On 15.12.2019 19.28, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1853991
> 
> [Impact]
> Sometimes USB ports and USB ethernet on Thunderbolt Docking don't work
> after hotplugging.
> 
> [Fix]
> Add proper link delay when PCIe devices transit out from D3cold.
> 
> [Test]
> Tested with Dell WD19DC docking station on Dell XPS 9380. After applying
> the fix, the USB ports on docking always work after hotplugging.
> 
> [Regression Potential]
> Low. This patch series adds proper delay required by PCIe spec, and only
> affects hotplug ports, i.e. Thunderbolt.
> 
> Mika Westerberg (3):
>   PCI: Make pcie_downstream_port() available outside of access.c
>   PCI/PM: Add pcie_wait_for_link_delay()
>   PCI/PM: Add missing link delays required by the PCIe spec
> 
> Rafael J. Wysocki (1):
>   PCI: PM: Avoid skipping bus-level PM on platforms without ACPI
> 
>  drivers/pci/access.c     |   9 ---
>  drivers/pci/pci-driver.c |  17 +++--
>  drivers/pci/pci.c        | 142 +++++++++++++++++++++++++++++++++++++--
>  drivers/pci/pci.h        |  10 +++
>  include/linux/suspend.h  |  26 ++++++-
>  kernel/power/suspend.c   |   3 +
>  6 files changed, 187 insertions(+), 20 deletions(-)
> 

applied to osp1 oem-next, thanks

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t