APPLIED [OEM-5.13] Re: [SRU][I/J/OEM-5.13/OEM-5.14][PATCH 0/1] Fix pci port lost when hotplug dock

[Timo Aaltonen]

On 13.12.2021 13.52, Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1954646
> 
> [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.
> 
> Mingchuang Qiao (1):
>    PCI: Re-enable Downstream Port LTR after reset or hotplug
> 
>   drivers/pci/pci.c   | 25 +++++++++++++++++++++++++
>   drivers/pci/pci.h   |  1 +
>   drivers/pci/probe.c | 18 +++++++++++++++---
>   3 files changed, 41 insertions(+), 3 deletions(-)
> 

applied to oem-5.13 via rebase to impish, thanks


-- 
t