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>

Author: singalsu

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];