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-rw-r--r--sound/core/pcm_lib.c6
-rw-r--r--sound/core/pcm_native.c3
2 files changed, 9 insertions, 0 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index b75db8e..bc57501 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 8bc7cb3..f91a439 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;
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