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authorTakashi Iwai <tiwai@suse.de>2007-11-23 13:14:23 +0100
committerJaroslav Kysela <perex@perex.cz>2008-01-31 17:29:28 +0100
commit7c7fc2d44b7a660846115e65b67772b6742a14d8 (patch)
tree44ddeae0b3962762a5a939acd52d0ef35ae230aa /sound/core/pcm_lib.c
parent7f6301cdfad5469312d266bcec3f1a02a8e8b5af (diff)
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[ALSA] Fix PCM MMAP time-stamp mode
When MMAP time-stamp mode is given, it's supposed to update the time-stamp only at period boundary. However, it currently updates at each status call so this is just useless. The patch fixes this misbehavior. Also it fixes the wrong check of tstamp_mode (don't use bit-and for enum). Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/core/pcm_lib.c')
-rw-r--r--sound/core/pcm_lib.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 806f1fba5446..93d7ca502730 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -148,8 +148,6 @@ static inline snd_pcm_uframes_t snd_pcm_update_hw_ptr_pos(struct snd_pcm_substre
pos = substream->ops->pointer(substream);
if (pos == SNDRV_PCM_POS_XRUN)
return pos; /* XRUN */
- if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP)
- getnstimeofday((struct timespec *)&runtime->status->tstamp);
#ifdef CONFIG_SND_DEBUG
if (pos >= runtime->buffer_size) {
snd_printk(KERN_ERR "BUG: stream = %i, pos = 0x%lx, buffer size = 0x%lx, period size = 0x%lx\n", substream->stream, pos, runtime->buffer_size, runtime->period_size);
@@ -189,6 +187,8 @@ static inline int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *subs
snd_pcm_uframes_t new_hw_ptr, hw_ptr_interrupt;
snd_pcm_sframes_t delta;
+ if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_MMAP)
+ getnstimeofday((struct timespec *)&runtime->status->tstamp);
pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
if (pos == SNDRV_PCM_POS_XRUN) {
xrun(substream);