diff options
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/pcm_lib.c | 6 | ||||
| -rw-r--r-- | sound/core/pcm_native.c | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index b75db8e9cc0..bc57501c584 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -373,6 +373,11 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, (unsigned long)new_hw_ptr, (unsigned long)runtime->hw_ptr_base); } + + /* without period interrupts, there are no regular pointer updates */ + if (runtime->no_period_wakeup) + goto no_delta_check; + /* something must be really wrong */ if (delta >= runtime->buffer_size + runtime->period_size) { hw_ptr_error(substream, @@ -442,6 +447,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream, (long)old_hw_ptr); } + no_delta_check: if (runtime->status->hw_ptr == new_hw_ptr) return 0; diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 8bc7cb3db33..f91a439f675 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -423,6 +423,9 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream, runtime->info = params->info; runtime->rate_num = params->rate_num; runtime->rate_den = params->rate_den; + runtime->no_period_wakeup = + (params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) && + (params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP); bits = snd_pcm_format_physical_width(runtime->format); runtime->sample_bits = bits; |