ASoC: SOF: ipc4-pcm: Invalidate the stream_start_offset in PAUSED state

commit 3ce3bc3 upstream.

When the final state is SOF_IPC4_PIPE_PAUSED, it is possible that the
stream will be restarted (resume or start) in which case we need to update
the offset from the firmware.

Cc: stable@vger.kernel.org # 6.8
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://msgid.link/r/20240321130814.4412-14-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

sound/soc/sof/ipc4-pcm.c

@@ -420,8 +420,19 @@ static int sof_ipc4_trigger_pipelines(struct snd_soc_component *component,
 	}
 
 	/* return if this is the final state */
-	if (state == SOF_IPC4_PIPE_PAUSED)
+	if (state == SOF_IPC4_PIPE_PAUSED) {
+		struct sof_ipc4_timestamp_info *time_info;
+
+		/*
+		 * Invalidate the stream_start_offset to make sure that it is
+		 * going to be updated if the stream resumes
+		 */
+		time_info = spcm->stream[substream->stream].private;
+		if (time_info)
+			time_info->stream_start_offset = SOF_IPC4_INVALID_STREAM_POSITION;
+
 		goto free;
+	}
 skip_pause_transition:
 	/* else set the RUNNING/RESET state in the DSP */
 	ret = sof_ipc4_set_multi_pipeline_state(sdev, state, trigger_list);