ASoC: soc-compress: Fix and add DPCM locking

We find mising DPCM locking inside soc_compr_set_params_fe
before calling dpcm_be_dai_hw_params() and dpcm_be_dai_prepare()
which cause lockdep assert for DPCM lock not held in
__soc_pcm_hw_params() and __soc_pcm_prepare()

Signed-off-by: Shalini Manjunatha <[email protected]>
Link: https://msgid.link/r/d985beeafdd32316eb45f20811eb7926da7a796e.1709720380.git.quic_c_shalma@quicinc.com
Signed-off-by: Mark Brown <[email protected]>

Author: Shalini Manjunatha

sound/soc/soc-compress.c

@@ -385,11 +385,15 @@ static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
 
 	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
 
+	snd_soc_dpcm_mutex_lock(fe);
 	ret = dpcm_be_dai_hw_params(fe, stream);
+	snd_soc_dpcm_mutex_unlock(fe);
 	if (ret < 0)
 		goto out;
 
+	snd_soc_dpcm_mutex_lock(fe);
 	ret = dpcm_be_dai_prepare(fe, stream);
+	snd_soc_dpcm_mutex_unlock(fe);
 	if (ret < 0)
 		goto out;