diff -drupN a/include/sound/soc.h b/include/sound/soc.h --- a/include/sound/soc.h 2018-08-06 17:23:04.000000000 +0300 +++ b/include/sound/soc.h 2022-06-12 05:28:14.000000000 +0300 @@ -485,6 +485,9 @@ int soc_new_pcm(struct snd_soc_pcm_runti int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num); #endif +struct snd_pcm_substream *snd_soc_get_substream(struct snd_soc_card *card, + const char *dai_link, int stream); + struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card, const char *dai_link, int stream); struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,