APPLIED[G]: [SRU] [F/Unstable/OEM-5.6] [PATCH 0/1] Add initial audio support for Lenovo ThinkStation P620

[seth.forshee at canonical.com]

On Wed, Aug 05, 2020 at 12:40:38AM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1890317
> 
> [Impact]
> Lenovo ThinkStation P620 is equipped with two USB audio card that don't
> fully work.
> 
> [Fix]
> Give these two cards profile name, so userspace can identify them to add
> addition support.
> 
> In addition to that, disable non-working element and relax error
> handling for speaker, so there's no error left. Otherwise usb-audio
> driver will stop working completely.
> 
> [Test]
> After the patch is applied, `cat /proc/asound/cards` can show correct
> profile name for each card. No more error can be spotted from dmesg.
> 
> The audio is still not fully working yet, because it requires more work
> in userspace ALSA and PulseAudio.
> 
> [Regression Potential]
> Low. Adding profile name doesn't change any code flow.
> The only behavioral change is error handling towards "Speaker."
> Becuase it actually relaxes the error handling instead of tightening, so
> devices that don't have this issue won't be affected.

Applied to groovy/master-next, thanks!