Re: [PATCH 4.19 102/219] ALSA: hda/hdmi - implement mst_no_extra_pcms flag

[Kai Vehmanen]

Hi,

On Mon, 30 Dec 2019, Pavel Machek wrote:

> > From: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
> > 
> > [ Upstream commit 2a2edfbbfee47947dd05f5860c66c0e80ee5e09d ]
> > 
> > To support the DP-MST multiple streams via single connector feature,
> > the HDMI driver was extended with the concept of backup PCMs. See
> > commit 9152085defb6 ("ALSA: hda - add DP MST audio support").
[...]
> This variable is not ever set in this patch, nor is it set elsewhere
> in 4.19-stable. This means this patch is not suitable for stable.

ack on that. In upstream this flag is only used by SOF (sound/soc/sof)
currently, but SOF is not part of 4.19, so there are no users for this 
flag. Sorry for not catching this sooner.

Br, Kai