From: Timo Wischer twischer@de.adit-jv.com
This is required for additional timer implementations which could detect errors and want to throw them.
Signed-off-by: Timo Wischer twischer@de.adit-jv.com --- sound/drivers/aloop.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c index 70145e6..f0c7b5b 100644 --- a/sound/drivers/aloop.c +++ b/sound/drivers/aloop.c @@ -169,7 +169,7 @@ static inline unsigned int get_rate_shift(struct loopback_pcm *dpcm) }
/* call in cable->lock */ -static void loopback_timer_start(struct loopback_pcm *dpcm) +static int loopback_timer_start(struct loopback_pcm *dpcm) { unsigned long tick; unsigned int rate_shift = get_rate_shift(dpcm); @@ -185,6 +185,8 @@ static void loopback_timer_start(struct loopback_pcm *dpcm) tick = dpcm->period_size_frac - dpcm->irq_pos; tick = (tick + dpcm->pcm_bps - 1) / dpcm->pcm_bps; mod_timer(&dpcm->timer, jiffies + tick); + + return 0; }
/* call in cable->lock */ @@ -265,7 +267,7 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd) struct snd_pcm_runtime *runtime = substream->runtime; struct loopback_pcm *dpcm = runtime->private_data; struct loopback_cable *cable = dpcm->cable; - int err, stream = 1 << substream->stream; + int err = 0, stream = 1 << substream->stream;
switch (cmd) { case SNDRV_PCM_TRIGGER_START: @@ -278,7 +280,7 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd) spin_lock(&cable->lock); cable->running |= stream; cable->pause &= ~stream; - loopback_timer_start(dpcm); + err = loopback_timer_start(dpcm); spin_unlock(&cable->lock); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) loopback_active_notify(dpcm); @@ -306,7 +308,7 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd) spin_lock(&cable->lock); dpcm->last_jiffies = jiffies; cable->pause &= ~stream; - loopback_timer_start(dpcm); + err = loopback_timer_start(dpcm); spin_unlock(&cable->lock); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) loopback_active_notify(dpcm); @@ -314,7 +316,7 @@ static int loopback_trigger(struct snd_pcm_substream *substream, int cmd) default: return -EINVAL; } - return 0; + return err; }
static void params_change(struct snd_pcm_substream *substream)