Re: [PATCH 4.19 038/422] soundwire: Initialize completion for defer messages

[Pierre-Louis Bossart]

> > [ Upstream commit a306a0e4a5326269b6c78d136407f08433ab5ece ]
> >
> > Deferred messages are async messages used to synchronize
> > transitions mostly while doing a bank switch on multi links.
> > On successful transitions these messages are marked complete
> > and thereby confirming that all the buses performed bank switch
> > successfully.
> >
> > So, initialize the completion structure for the same.
> >
> > Signed-off-by: Sanyog Kale <sanyog.r.kale@xxxxxxxxx>
>
> This is only called from sdw_transfer_defer() and that function is
> called in mainline, but is unused in 4.19.X.
>
> So I don't think this is suitable for -stable.

Agree.

Multi-link solutions with synchronized streaming are not supported just 
yet. It's an important feature but it'll only be enabled after the 
existing backlog of 60+ patches are merged, and when the ASoC multi-cpu 
support allows for this feature, hopefully for 5.7.

my 2 cents
-Pierre