diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-09-25 21:03:56 +0400 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-09-25 21:03:56 +0400 |
| commit | 593d1006cdf710ab3469c0c37c184fea0bc3da97 (patch) | |
| tree | e4db58440018a52089e8d6b39160f753ab10df99 /sound/usb/pcm.c | |
| parent | 5217192b85480353aeeb395574e60d0db04f3676 (diff) | |
| parent | 9b20aa63b8fc9a6a3b6831f4eae3621755e51211 (diff) | |
| download | linux-593d1006cdf710ab3469c0c37c184fea0bc3da97.tar.xz | |
Merge remote-tracking branch 'tip/core/rcu' into next.2012.09.25b
Resolved conflict in kernel/sched/core.c using Peter Zijlstra's
approach from https://lkml.org/lkml/2012/9/5/585.
Diffstat (limited to 'sound/usb/pcm.c')
| -rw-r--r-- | sound/usb/pcm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index fd5e982fc98c..f782ce19bf5a 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1140,6 +1140,12 @@ static void retire_playback_urb(struct snd_usb_substream *subs, int processed = urb->transfer_buffer_length / stride; int est_delay; + /* ignore the delay accounting when procssed=0 is given, i.e. + * silent payloads are procssed before handling the actual data + */ + if (!processed) + return; + spin_lock_irqsave(&subs->lock, flags); est_delay = snd_usb_pcm_delay(subs, runtime->rate); /* update delay with exact number of samples played */ |