substream->runtime will be attached when substream was opened at snd_pcm_attach_substream(). When it uses DPCM, FE substream->runtime is attached, but BE substream->runtime is not. Thus, we are copying FE substream->runtime to BE.

But, we are copyig FE substream->runtime to FE dpcm->runtime first (A), and copy it to BE dpcm->runtime (B), and copy it to BE substream->runtime (C).

static int dpcm_fe_dai_open(...) { ... (A) fe->dpcm[stream].runtime = fe_substream->runtime; ... }

static int dpcm_be_connect(...) { ... (B) be->dpcm[stream].runtime = fe->dpcm[stream].runtime; ... }

int dpcm_be_dai_startup(...) { ... (C) be_substream->runtime = be->dpcm[stream].runtime; ... }

It is too roundabout and troublesome. OTOH, it is directly copying fe_substream->runtime at dpcm_be_reparent() without using be->dpcm[stream].runtime.

static void dpcm_be_reparent(...) { ... for_each_dpcm_fe(be, stream, dpcm) { ... => be_substream->runtime = fe_substream->runtime; break; } }

This patch removes indirect copying.

Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- include/sound/soc-dpcm.h | 1 - sound/soc/soc-compress.c | 7 ------- sound/soc/soc-pcm.c | 10 ++++------ 3 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/include/sound/soc-dpcm.h b/include/sound/soc-dpcm.h index 1e7d09556fe3..4d6ac7699833 100644 --- a/include/sound/soc-dpcm.h +++ b/include/sound/soc-dpcm.h @@ -91,7 +91,6 @@ struct snd_soc_dpcm_runtime { struct list_head fe_clients;

int users; - struct snd_pcm_runtime *runtime; struct snd_pcm_hw_params hw_params;

/* state and update */ diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c index e7aa6f360cab..554c329ec87f 100644 --- a/sound/soc/soc-compress.c +++ b/sound/soc/soc-compress.c @@ -134,8 +134,6 @@ static int soc_compr_open(struct snd_compr_stream *cstream) static int soc_compr_open_fe(struct snd_compr_stream *cstream) { struct snd_soc_pcm_runtime *fe = cstream->private_data; - struct snd_pcm_substream *fe_substream = - fe->pcm->streams[cstream->direction].substream; struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0); struct snd_soc_dpcm *dpcm; struct snd_soc_dapm_widget_list *list; @@ -143,7 +141,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) int ret;

mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME); - fe->dpcm[stream].runtime = fe_substream->runtime;

ret = dpcm_path_get(fe, stream, &list); if (ret < 0) @@ -153,7 +150,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream)

/* calculate valid and active FE <-> BE dpcms */ dpcm_process_paths(fe, stream, &list, 1); - fe->dpcm[stream].runtime = fe_substream->runtime;

fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;

@@ -164,7 +160,6 @@ static int soc_compr_open_fe(struct snd_compr_stream *cstream) dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;

dpcm_be_disconnect(fe, stream); - fe->dpcm[stream].runtime = NULL; goto out; }

@@ -236,8 +231,6 @@ static int soc_compr_free_fe(struct snd_compr_stream *cstream)

mutex_unlock(&fe->card->pcm_mutex);

- fe->dpcm[stream].runtime = NULL; - snd_soc_link_compr_shutdown(cstream, 0);

snd_soc_compr_components_free(cstream, 0); diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 41a111586ac3..f6b5f72df65e 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1230,7 +1230,6 @@ static int dpcm_be_connect(struct snd_soc_pcm_runtime *fe,

dpcm->be = be; dpcm->fe = fe; - be->dpcm[stream].runtime = fe->dpcm[stream].runtime; dpcm->state = SND_SOC_DPCM_LINK_STATE_NEW; snd_soc_dpcm_stream_lock_irq(fe, stream); list_add(&dpcm->list_be, &fe->dpcm[stream].be_clients); @@ -1465,10 +1464,11 @@ static int dpcm_add_paths(struct snd_soc_pcm_runtime *fe, int stream, struct snd_soc_dapm_widget_list *list = *list_; struct snd_soc_pcm_runtime *be; struct snd_soc_dapm_widget *widget; + struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream); int i, new = 0, err;

/* don't connect if FE is not running */ - if (!fe->dpcm[stream].runtime && !fe->fe_compr) + if (!fe_substream->runtime && !fe->fe_compr) return new;

/* Create any new FE <--> BE connections */ @@ -1590,6 +1590,7 @@ void dpcm_be_dai_stop(struct snd_soc_pcm_runtime *fe, int stream,

int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) { + struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream); struct snd_soc_pcm_runtime *be; struct snd_soc_dpcm *dpcm; int err, count = 0; @@ -1629,7 +1630,7 @@ int dpcm_be_dai_startup(struct snd_soc_pcm_runtime *fe, int stream) dev_dbg(be->dev, "ASoC: open %s BE %s\n", stream ? "capture" : "playback", be->dai_link->name);

- be_substream->runtime = be->dpcm[stream].runtime; + be_substream->runtime = fe_substream->runtime; err = __soc_pcm_open(be, be_substream); if (err < 0) { be->dpcm[stream].users--; @@ -2693,8 +2694,6 @@ static void dpcm_fe_dai_cleanup(struct snd_pcm_substream *fe_substream) dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;

dpcm_be_disconnect(fe, stream); - - fe->dpcm[stream].runtime = NULL; }

static int dpcm_fe_dai_close(struct snd_pcm_substream *fe_substream) @@ -2719,7 +2718,6 @@ static int dpcm_fe_dai_open(struct snd_pcm_substream *fe_substream) int stream = fe_substream->stream;

snd_soc_dpcm_mutex_lock(fe); - fe->dpcm[stream].runtime = fe_substream->runtime;

ret = dpcm_path_get(fe, stream, &list); if (ret < 0)