From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> soc_pcm_apply_symmetry() is used like below in all cases. if (snd_soc_dai_active(dai)) { err = soc_pcm_apply_symmetry(fe_substream, dai); ... } Because of this style, the code is deep nested. This patch checks it under soc_pcm_apply_symmetry(), and makes code simple. static int soc_pcm_apply_symmetry(...) { ... => if (!snd_soc_dai_active(...)) return 0; ... } => ret = soc_pcm_apply_symmetry(); if (ret < 0) ... Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> --- sound/soc/soc-pcm.c | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index ba8ffbf8a5d3..9b5ab7a05f65 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -349,6 +349,9 @@ static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream, struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); int ret; + if (!snd_soc_dai_active(soc_dai)) + return 0; + #define __soc_pcm_apply_symmetry(name, NAME) \ if (soc_dai->name && (soc_dai->driver->symmetric_##name || \ rtd->dai_link->symmetric_##name)) { \ @@ -765,11 +768,9 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) /* Symmetry only applies if we've already got an active stream. */ for_each_rtd_dais(rtd, i, dai) { - if (snd_soc_dai_active(dai)) { - ret = soc_pcm_apply_symmetry(substream, dai); - if (ret != 0) - goto err; - } + ret = soc_pcm_apply_symmetry(substream, dai); + if (ret != 0) + goto err; } pr_debug("ASoC: %s <-> %s info:\n", @@ -1693,11 +1694,9 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, for_each_rtd_cpu_dais (fe, i, fe_cpu_dai) { /* Symmetry only applies if we've got an active stream. */ - if (snd_soc_dai_active(fe_cpu_dai)) { - err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai); - if (err < 0) - return err; - } + err = soc_pcm_apply_symmetry(fe_substream, fe_cpu_dai); + if (err < 0) + return err; } /* apply symmetry for BE */ @@ -1721,11 +1720,9 @@ static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream, /* Symmetry only applies if we've got an active stream. */ for_each_rtd_dais(rtd, i, dai) { - if (snd_soc_dai_active(dai)) { - err = soc_pcm_apply_symmetry(fe_substream, dai); - if (err < 0) - return err; - } + err = soc_pcm_apply_symmetry(fe_substream, dai); + if (err < 0) + return err; } } -- 2.25.1