[PATCH 0/4][SRU][D][E][F][OEM-B][OEM-B-OSP1] The system cannot resume from S3 if user unplugs the TB16 during suspend state

[Seth Forshee]

On Wed, Oct 23, 2019 at 11:14:59AM +0800, AceLan Kao wrote:
> BugLink: https://bugs.launchpad.net/bugs/1849269
> 
> [Impact]
> Unplug TBT dock during S3 and then wakes up the system leads to system
> hangs.
> This not only happens on Dell TB16, but also Dell WD19TB. It's more like
> a BIOS or TBT firmware issue that TBT firmware doesn't re-create the PCIe
> tunnels.
> 
> [Fix]
> Mika provides 4 patches to fix this issue, but only 2 are accepted and are
> included in linus' tree. We need especially the 4th commit to fix the
> issue, so we keep the 3rd and 4th commits as sauce patches.
> 
> [Test]
> Verified on Dell Precision 5530 + WD19TB
> 
> [Regression Potential]
> Low, those patches doesn't change the code path much. The 4th commit adds
> some checks to return failure state, and it should be safe for those
> machines which is working well.

I was reading through the upstream thread, and as of a week ago it
appeared that they were discussing a change to the
pciehp_check_link_active() changes, which I do not see in the patches
you sent. Do you know if another iteration of the patches is
forthcoming, and if so shouldn't we wait and take that version?

Thanks,
Seth