[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>
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 806f1fb..93d7ca5 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -148,8 +148,6 @@
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 @@
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);
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index fb3dde4..6245bda 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -595,7 +595,7 @@
status->trigger_tstamp = runtime->trigger_tstamp;
if (snd_pcm_running(substream)) {
snd_pcm_update_hw_ptr(substream);
- if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP)
+ if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_MMAP)
status->tstamp = runtime->status->tstamp;
else
getnstimeofday(&status->tstamp);