Audio: Volume: Workaround to prevent linear ramp when not requested

This does not help other ramp types so need to find a common
way to prevent a ramp to happen when another channel is adjusted.

TODO: It looks like the other changes addressed this issue. Should
be possible to leave this out.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

src/audio/volume/volume.c

@@ -322,19 +322,25 @@ static inline void volume_ramp(struct processing_module *mod)
 
  if (volume < tvolume) {
  /* ramp up, check if ramp completed */
- if (new_vol < tvolume)
+ if (new_vol < tvolume) {
  cd->ramp_finished = false;
- else
+ } else {
  new_vol = tvolume;
+ cd->ramp_coef[i] = 0;
+ }
+
  } else {
  /* ramp down */
- if (new_vol > tvolume)
+ if (new_vol > tvolume) {
  cd->ramp_finished = false;
- else
+ } else {
  new_vol = tvolume;
+ cd->ramp_coef[i] = 0;
+ }
  }
  cd->volume[i] = new_vol;
  }
+
  /* assign other channel volume as the first calculated volume with same volume case */
  for (i = cd->ramp_channel_counter; i < cd->channels; i++)
  cd->volume[i] = cd->volume[0];