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-rw-r--r--include/sound/pcm.h2
-rw-r--r--sound/core/pcm_native.c15
2 files changed, 17 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 25563317782c..8a89fa6fdd5e 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -59,6 +59,7 @@ struct snd_pcm_ops {
int (*hw_free)(struct snd_pcm_substream *substream);
int (*prepare)(struct snd_pcm_substream *substream);
int (*trigger)(struct snd_pcm_substream *substream, int cmd);
+ int (*sync_stop)(struct snd_pcm_substream *substream);
snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *substream);
int (*get_time_info)(struct snd_pcm_substream *substream,
struct timespec *system_ts, struct timespec *audio_ts,
@@ -395,6 +396,7 @@ struct snd_pcm_runtime {
wait_queue_head_t sleep; /* poll sleep */
wait_queue_head_t tsleep; /* transfer sleep */
struct fasync_struct *fasync;
+ bool stop_operating; /* sync_stop will be called */
/* -- private section -- */
void *private_data;
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 704ea75199e4..163d621ff238 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -568,6 +568,15 @@ static inline void snd_pcm_timer_notify(struct snd_pcm_substream *substream,
#endif
}
+static void snd_pcm_sync_stop(struct snd_pcm_substream *substream)
+{
+ if (substream->runtime->stop_operating) {
+ substream->runtime->stop_operating = false;
+ if (substream->ops->sync_stop)
+ substream->ops->sync_stop(substream);
+ }
+}
+
/**
* snd_pcm_hw_param_choose - choose a configuration defined by @params
* @pcm: PCM instance
@@ -660,6 +669,8 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
if (atomic_read(&substream->mmap_count))
return -EBADFD;
+ snd_pcm_sync_stop(substream);
+
params->rmask = ~0U;
err = snd_pcm_hw_refine(substream, params);
if (err < 0)
@@ -788,6 +799,7 @@ static int snd_pcm_hw_free(struct snd_pcm_substream *substream)
snd_pcm_stream_unlock_irq(substream);
if (atomic_read(&substream->mmap_count))
return -EBADFD;
+ snd_pcm_sync_stop(substream);
if (substream->ops->hw_free)
result = substream->ops->hw_free(substream);
if (substream->managed_buffer_alloc)
@@ -1313,6 +1325,7 @@ static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state)
runtime->status->state = state;
snd_pcm_timer_notify(substream, SNDRV_TIMER_EVENT_MSTOP);
}
+ runtime->stop_operating = true;
wake_up(&runtime->sleep);
wake_up(&runtime->tsleep);
}
@@ -1589,6 +1602,7 @@ static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state)
snd_pcm_trigger_tstamp(substream);
runtime->status->state = runtime->status->suspended_state;
snd_pcm_timer_notify(substream, SNDRV_TIMER_EVENT_MRESUME);
+ snd_pcm_sync_stop(substream);
}
static const struct action_ops snd_pcm_action_resume = {
@@ -1709,6 +1723,7 @@ static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream,
static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state)
{
int err;
+ snd_pcm_sync_stop(substream);
err = substream->ops->prepare(substream);
if (err < 0)
return err;