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ASoC: pcm: Tidy up open/hw_params handling 

Currently, the core will continue processing open/hw_params
component callbacks after one has failed even though it will abort
immediately afterwards. This is unnecessary and also has the issue
that close/hw_free will be called on the component which failed
open/hw_params which could result in issues if the driver doesn't
expect this behaviour.

Update the core to abort processing open/hw_params when an error
is hit and only call close/hw_free for those components that were
successfully opened.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2018-06-19 16:22:09 +01:00 committed by Mark Brown
parent f0d9034b29
commit 244e293690
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 62 additions and 54 deletions
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116
sound/soc/soc-pcm.c
View File

@ -448,6 +448,29 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
hw->rate_max = min_not_zero(hw->rate_max, rate_max);
}
static int soc_pcm_components_close(struct snd_pcm_substream *substream,
struct snd_soc_component *last)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_component *component;
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
if (component == last)
break;
if (!component->driver->ops ||
!component->driver->ops->close)
continue;
component->driver->ops->close(substream);
}
return 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
@ -462,7 +485,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
const char *codec_dai_name = "multicodec";
int i, ret = 0, __ret;
int i, ret = 0;
pinctrl_pm_select_default_state(cpu_dai->dev);
for (i = 0; i < rtd->num_codecs; i++)
@ -486,7 +509,6 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
}
}
ret = 0;
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
@ -494,16 +516,15 @@ static int soc_pcm_open(struct snd_pcm_substream *substream)
!component->driver->ops->open)
continue;
__ret = component->driver->ops->open(substream);
if (__ret < 0) {
ret = component->driver->ops->open(substream);
if (ret < 0) {
dev_err(component->dev,
"ASoC: can't open component %s: %d\n",
component->name, __ret);
ret = __ret;
component->name, ret);
goto component_err;
}
}
if (ret < 0)
goto component_err;
component = NULL;
for (i = 0; i < rtd->num_codecs; i++) {
codec_dai = rtd->codec_dais[i];
@ -612,15 +633,7 @@ codec_dai_err:
}
component_err:
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
if (!component->driver->ops ||
!component->driver->ops->close)
continue;
component->driver->ops->close(substream);
}
soc_pcm_components_close(substream, component);
if (cpu_dai->driver->ops->shutdown)
cpu_dai->driver->ops->shutdown(substream, cpu_dai);
@ -714,15 +727,7 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
if (rtd->dai_link->ops->shutdown)
rtd->dai_link->ops->shutdown(substream);
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
if (!component->driver->ops ||
!component->driver->ops->close)
continue;
component->driver->ops->close(substream);
}
soc_pcm_components_close(substream, NULL);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
@ -874,6 +879,29 @@ int soc_dai_hw_params(struct snd_pcm_substream *substream,
return 0;
}
static int soc_pcm_components_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_component *last)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_component *component;
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
if (component == last)
break;
if (!component->driver->ops ||
!component->driver->ops->hw_free)
continue;
component->driver->ops->hw_free(substream);
}
return 0;
}
/*
* Called by ALSA when the hardware params are set by application. This
* function can also be called multiple times and can allocate buffers
@ -886,7 +914,7 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_component *component;
struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int i, ret = 0, __ret;
int i, ret = 0;
mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
if (rtd->dai_link->ops->hw_params) {
@ -944,7 +972,6 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
if (ret < 0)
goto interface_err;
ret = 0;
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
@ -952,16 +979,15 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
!component->driver->ops->hw_params)
continue;
__ret = component->driver->ops->hw_params(substream, params);
if (__ret < 0) {
ret = component->driver->ops->hw_params(substream, params);
if (ret < 0) {
dev_err(component->dev,
"ASoC: %s hw params failed: %d\n",
component->name, __ret);
ret = __ret;
component->name, ret);
goto component_err;
}
}
if (ret < 0)
goto component_err;
component = NULL;
/* store the parameters for each DAIs */
cpu_dai->rate = params_rate(params);
@ -977,15 +1003,7 @@ out:
return ret;
component_err:
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
if (!component->driver->ops ||
!component->driver->ops->hw_free)
continue;
component->driver->ops->hw_free(substream);
}
soc_pcm_components_hw_free(substream, component);
if (cpu_dai->driver->ops->hw_free)
cpu_dai->driver->ops->hw_free(substream, cpu_dai);
@ -1014,8 +1032,6 @@ codec_err:
static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_component *component;
struct snd_soc_rtdcom_list *rtdcom;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai;
bool playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
@ -1052,15 +1068,7 @@ static int soc_pcm_hw_free(struct snd_pcm_substream *substream)
rtd->dai_link->ops->hw_free(substream);
/* free any component resources */
for_each_rtdcom(rtd, rtdcom) {
component = rtdcom->component;
if (!component->driver->ops ||
!component->driver->ops->hw_free)
continue;
component->driver->ops->hw_free(substream);
}
soc_pcm_components_hw_free(substream, NULL);
/* now free hw params for the DAIs */
for (i = 0; i < rtd->num_codecs; i++) {