[J v2][PATCH 00/30] drm/amdgpu: Add USB4 support for DP tunneling

[Andrea Righi]

On Mon, Nov 22, 2021 at 08:33:48PM +0200, Timo Aaltonen wrote:
> BugLink: https://bugs.launchpad.net/bugs/1951868
> 
> This is needed in OEM-5.14, but in order to verify that the upgrade path
> has it too, we'd need to first know that it is accepted in jammy.
> 
> Most patches were straight cherry-picks, some needed minor conflict fixes,
> and patch 11 adds an enum from a huge, otherwise unrelated commit which
> we don't want to backport.
...
>  51 files changed, 2748 insertions(+), 340 deletions(-)

This looks like a pretty big backport... All the patches look
reasonable, but the risk is to make amdgpu really hard to maintain if we
need to apply stable updates / security fixes.

So, I'd like to better understand the motivation of this backport. If
this is a requirement for OEM-5.14 what would be the downside of
maintaining this only in the OEM-5.14 tree?

Thanks,
-Andrea