From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
soc_pcm_open() does rollback when failed (A),
but, it is almost same as soc_pcm_close().
static int soc_pcm_open(xxx)
{
...
if (ret < 0)
goto xxx_err;
...
return 0;
^ config_err:
| ...
| rtd_startup_err:
(A) ...
| component_err:
| ...
v return ret;
}
The difference is
soc_pcm_close() is for all dai/component/substream,
rollback is for succeeded part only.
This kind of duplicated code can be a hotbed of bugs,
thus, we want to share soc_pcm_close() and rollback.
Now, soc_pcm_open/close() are handling
1) snd_soc_dai_startup/shutdown()
2) snd_soc_link_startup/shutdown()
3) snd_soc_component_module_get/put()
4) snd_soc_component_open/close()
5) pm_runtime_put/get()
Now, 1) to 5) are handled.
This patch adds new soc_pcm_clean() and call it from
soc_pcm_open() as rollback, and from soc_pcm_close() as
normal close handler.
One note here is that it don't need to call snd_soc_runtime_deactivate()
when rollback case, because it will be called without
snd_soc_runtime_activate().
It also don't need to call snd_soc_dapm_stream_stop() when rollback case.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
sound/soc/soc-pcm.c | 69 ++++++++++++++++++++-------------------------
1 file changed, 30 insertions(+), 39 deletions(-)
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 9049b2544fcc..7f3e44918f19 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -651,12 +651,7 @@ static int soc_pcm_components_close(struct snd_pcm_substream *substream,
return ret;
}
-/*
- * Called by ALSA when a PCM substream is closed. Private data can be
- * freed here. The cpu DAI, codec DAI, machine and components are also
- * shutdown.
- */
-static int soc_pcm_close(struct snd_pcm_substream *substream)
+static int soc_pcm_clean(struct snd_pcm_substream *substream, int rollback)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_component *component;
@@ -665,20 +660,22 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
- snd_soc_runtime_deactivate(rtd, substream->stream);
+ if (!rollback)
+ snd_soc_runtime_deactivate(rtd, substream->stream);
for_each_rtd_dais(rtd, i, dai)
- snd_soc_dai_shutdown(dai, substream, 0);
+ snd_soc_dai_shutdown(dai, substream, rollback);
- snd_soc_link_shutdown(substream, 0);
+ snd_soc_link_shutdown(substream, rollback);
- soc_pcm_components_close(substream, 0);
+ soc_pcm_components_close(substream, rollback);
- snd_soc_dapm_stream_stop(rtd, substream->stream);
+ if (!rollback)
+ snd_soc_dapm_stream_stop(rtd, substream->stream);
mutex_unlock(&rtd->card->pcm_mutex);
- snd_soc_pcm_component_pm_runtime_put(rtd, substream, 0);
+ snd_soc_pcm_component_pm_runtime_put(rtd, substream, rollback);
for_each_rtd_components(rtd, i, component)
if (!snd_soc_component_active(component))
@@ -687,6 +684,16 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
return 0;
}
+/*
+ * Called by ALSA when a PCM substream is closed. Private data can be
+ * freed here. The cpu DAI, codec DAI, machine and components are also
+ * shutdown.
+ */
+static int soc_pcm_close(struct snd_pcm_substream *substream)
+{
+ return soc_pcm_clean(substream, 0);
+}
+
/*
* Called by ALSA when a PCM substream is opened, the runtime->hw record is
* then initialized and any private data can be allocated. This also calls
@@ -707,17 +714,17 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
ret = snd_soc_pcm_component_pm_runtime_get(rtd, substream);
if (ret < 0)
- goto pm_err;
+ goto err;
mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
ret = soc_pcm_components_open(substream);
if (ret < 0)
- goto component_err;
+ goto err;
ret = snd_soc_link_startup(substream);
if (ret < 0)
- goto rtd_startup_err;
+ goto err;
/* startup the audio subsystem */
for_each_rtd_dais(rtd, i, dai) {
@@ -726,7 +733,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
dev_err(dai->dev,
"ASoC: can't open DAI %s: %d\n",
dai->name, ret);
- goto config_err;
+ goto err;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
@@ -755,18 +762,18 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
if (!runtime->hw.rates) {
printk(KERN_ERR "ASoC: %s <-> %s No matching rates\n",
codec_dai_name, cpu_dai_name);
- goto config_err;
+ goto err;
}
if (!runtime->hw.formats) {
printk(KERN_ERR "ASoC: %s <-> %s No matching formats\n",
codec_dai_name, cpu_dai_name);
- goto config_err;
+ goto err;
}
if (!runtime->hw.channels_min || !runtime->hw.channels_max ||
runtime->hw.channels_min > runtime->hw.channels_max) {
printk(KERN_ERR "ASoC: %s <-> %s No matching channels\n",
codec_dai_name, cpu_dai_name);
- goto config_err;
+ goto err;
}
soc_pcm_apply_msb(substream);
@@ -776,7 +783,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
if (snd_soc_dai_active(dai)) {
ret = soc_pcm_apply_symmetry(substream, dai);
if (ret != 0)
- goto config_err;
+ goto err;
}
}
@@ -787,29 +794,13 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
runtime->hw.channels_max);
pr_debug("ASoC: min rate %d max rate %d\n", runtime->hw.rate_min,
runtime->hw.rate_max);
-
dynamic:
-
snd_soc_runtime_activate(rtd, substream->stream);
-
- mutex_unlock(&rtd->card->pcm_mutex);
- return 0;
-
-config_err:
- for_each_rtd_dais(rtd, i, dai)
- snd_soc_dai_shutdown(dai, substream, 1);
-
- snd_soc_link_shutdown(substream, 1);
-rtd_startup_err:
- soc_pcm_components_close(substream, 1);
-component_err:
+err:
mutex_unlock(&rtd->card->pcm_mutex);
-pm_err:
- snd_soc_pcm_component_pm_runtime_put(rtd, substream, 1);
- for_each_rtd_components(rtd, i, component)
- if (!snd_soc_component_active(component))
- pinctrl_pm_select_sleep_state(component->dev);
+ if (ret < 0)
+ soc_pcm_clean(substream, 1);
return ret;
}
--
2.25.1
