Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-microblaze.git] / sound / core / pcm_lib.c

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index a93a423..10e7ef7 100644 (file)
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -248,8 +248,10 @@ static void update_audio_tstamp(struct snd_pcm_substream *substream,
                                runtime->rate);
                *audio_tstamp = ns_to_timespec(audio_nsecs);
        }
-       runtime->status->audio_tstamp = *audio_tstamp;
-       runtime->status->tstamp = *curr_tstamp;
+       if (!timespec_equal(&runtime->status->audio_tstamp, audio_tstamp)) {
+               runtime->status->audio_tstamp = *audio_tstamp;
+               runtime->status->tstamp = *curr_tstamp;
+       }
 
        /*
         * re-take a driver timestamp to let apps detect if the reference tstamp