diff --git a/src/audio/pipeline/pipeline-params.c b/src/audio/pipeline/pipeline-params.c
index 36936b8283a0..c54d30347f8a 100644
--- a/src/audio/pipeline/pipeline-params.c
+++ b/src/audio/pipeline/pipeline-params.c
@@ -49,20 +49,20 @@ static int pipeline_comp_params_neg(struct comp_dev *current,
 		err = audio_buffer_set_params(calling_buf, &ppl_data->params->params,
 					      BUFFER_UPDATE_FORCE);
 		break;
-//	default:
-//		/* return 0 if params matches */
-//msz		if (!buffer_params_match(calling_buf,
-//					 &ppl_data->params->params,
-//					 BUFF_PARAMS_FRAME_FMT |
-//					 BUFF_PARAMS_RATE)) {
-//			/*
-//			 * parameters conflict with an active pipeline,
-//			 * drop an error and reject the .params() command.
-//			 */
-//			pipe_err(current->pipeline,
-//				 "pipeline_comp_params_neg(): params conflict with existing active pipeline!");
-//			err = -EINVAL;
-//		}
+	default:
+		/* return 0 if params matches */
+		if (!audio_buffer_params_match(calling_buf,
+					       &ppl_data->params->params,
+					       BUFF_PARAMS_FRAME_FMT |
+					       BUFF_PARAMS_RATE)) {
+			/*
+			 * parameters conflict with an active pipeline,
+			 * drop an error and reject the .params() command.
+			 */
+			pipe_err(current->pipeline,
+				 "pipeline_comp_params_neg(): params conflict with existing active pipeline!");
+			err = -EINVAL;
+		}
 	}
 	return err;
 }
diff --git a/src/include/sof/audio/buffer.h b/src/include/sof/audio/buffer.h
index 55a8beefd6ca..549c0309a669 100644
--- a/src/include/sof/audio/buffer.h
+++ b/src/include/sof/audio/buffer.h
@@ -168,14 +168,13 @@ struct buffer_cb_free {
 
 static inline struct sof_audio_buffer *buffer_from_list(struct list_item *clist, int dir)
 {
-	return NULL;
-	//msz
-}
+	struct comp_buffer *comp_buffer =
+				((dir) == PPL_DIR_DOWNSTREAM ?
+				 container_of(clist, struct comp_buffer, source_list) :
+				 container_of(clist, struct comp_buffer, sink_list));
 
-//#define buffer_from_list(ptr, dir) \
-//	((dir) == PPL_DIR_DOWNSTREAM ? \
-//	 container_of(ptr, struct comp_buffer, source_list) : \
-//	 container_of(ptr, struct comp_buffer, sink_list))
+	return comp_buffer ? &comp_buffer->audio_buffer : NULL;
+}
 
 #define buffer_set_cb(buffer, func, data, type) \
 	do {				\
@@ -261,14 +260,15 @@ void buffer_attach(struct comp_buffer *buffer, struct list_item *head, int dir);
  */
 void buffer_detach(struct comp_buffer *buffer, struct list_item *head, int dir);
 
-static inline struct comp_dev *buffer_get_comp(struct sof_audio_buffer *buffer, int dir)
+static inline struct comp_dev *buffer_get_comp(struct sof_audio_buffer *audio_buffer, int dir)
 {
-//	struct comp_dev *comp = (dir == PPL_DIR_DOWNSTREAM) ?
-//					comp_buffer_get_sink_component(buffer) :
-//					comp_buffer_get_source_component(buffer);
-//	return comp;
-	return NULL;
-	//msz
+	struct comp_buffer *comp_buffer =
+			container_of(audio_buffer, struct comp_buffer, audio_buffer);
+	struct comp_dev *comp = (dir == PPL_DIR_DOWNSTREAM) ?
+					comp_buffer_get_sink_component(comp_buffer) :
+					comp_buffer_get_source_component(comp_buffer);
+
+	return comp;
 }
 
 static inline uint32_t buffer_pipeline_id(const struct comp_buffer *buffer)
diff --git a/src/ipc/ipc-helper.c b/src/ipc/ipc-helper.c
index e33d0313e86f..5e9c6a60e477 100644
--- a/src/ipc/ipc-helper.c
+++ b/src/ipc/ipc-helper.c
@@ -135,16 +135,18 @@ int comp_verify_params(struct comp_dev *dev, uint32_t flag,
 	 * has only one sink or one source buffer.
 	 */
 	if (list_is_empty(source_list) != list_is_empty(sink_list)) {
-//		if (list_is_empty(sink_list))
-//			buf = list_first_item(source_list,
-//					      struct comp_buffer,
-//					      sink_list);
-//		else
-//			buf = list_first_item(sink_list,
-//					      struct comp_buffer,
-//					      source_list);
-		//msz
-
+		struct comp_buffer *comp_buffer;
+
+		if (list_is_empty(sink_list))
+			comp_buffer = list_first_item(source_list,
+						      struct comp_buffer,
+						      sink_list);
+		else
+			comp_buffer = list_first_item(sink_list,
+						      struct comp_buffer,
+						      source_list);
+
+		buf = &comp_buffer->audio_buffer;
 		/* update specific pcm parameter with buffer parameter if
 		 * specific flag is set.
 		 */
@@ -156,7 +158,7 @@ int comp_verify_params(struct comp_dev *dev, uint32_t flag,
 		audio_buffer_set_params(buf, params, BUFFER_UPDATE_FORCE);
 
 		/* set component period frames */
-		//msz component_set_nearest_period_frames(dev, audio_stream_get_rate(&buf->stream));
+		component_set_nearest_period_frames(dev, audio_buffer_get_rate(buf));
 	} else {
 		/* for other components we iterate over all downstream buffers
 		 * (for playback) or upstream buffers (for capture).
@@ -165,7 +167,7 @@ int comp_verify_params(struct comp_dev *dev, uint32_t flag,
 
 		list_for_item(clist, buffer_list) {
 			buf = buffer_from_list(clist, dir);
-//			comp_update_params(flag, params, buf);
+			comp_update_params(flag, params, buf);
 			audio_buffer_set_params(buf, params, BUFFER_UPDATE_FORCE);
 		}