[PATCH v2 2/3] ASoC: Intel: avs: Disable periods-elapsed work when closing PCM

[Cezary Rojewski <cezary.rojewski@intel.com>]

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: 0dbb186c3510 ("ASoC: Intel: avs: Update stream status in a separate thread")
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/intel/avs/pcm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c
index 501466bd1f7f..80c001120cdd 100644
--- a/sound/soc/intel/avs/pcm.c
+++ b/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);
 }
-- 
2.25.1