ASoC: Intel: avs: Disable periods-elapsed work when closing PCM

avs_dai_fe_shutdown() handles the shutdown procedure for HOST HDAudio
stream while period-elapsed work services its IRQs. As the former
frees the DAI's private context, these two operations shall be
synchronized to avoid slab-use-after-free or worse errors.

Fixes: 0dbb186 ("ASoC: Intel: avs: Update stream status in a separate thread")
Signed-off-by: Cezary Rojewski <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: crojewsk-intel

sound/soc/intel/avs/pcm.c

@@ -651,6 +651,7 @@ static void avs_dai_fe_shutdown(struct snd_pcm_substream *substream, struct snd_
 
 	data = snd_soc_dai_get_dma_data(dai, substream);
 
+	disable_work_sync(&data->period_elapsed_work);
 	snd_hdac_ext_stream_release(data->host_stream, HDAC_EXT_STREAM_TYPE_HOST);
 	avs_dai_shutdown(substream, dai);
 }