diff options
| -rw-r--r-- | sound/drivers/aloop.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c index 3c0088272095..838ad86311b8 100644 --- a/sound/drivers/aloop.c +++ b/sound/drivers/aloop.c @@ -171,6 +171,10 @@ static void loopback_timer_start(struct loopback_pcm *dpcm) dpcm->pcm_rate_shift = rate_shift; dpcm->period_size_frac = frac_pos(dpcm, dpcm->pcm_period_size); } + if (dpcm->period_size_frac <= dpcm->irq_pos) { + dpcm->irq_pos %= dpcm->period_size_frac; + dpcm->period_update_pending = 1; + } tick = dpcm->period_size_frac - dpcm->irq_pos; tick = (tick + dpcm->pcm_bps - 1) / dpcm->pcm_bps; dpcm->timer.expires = jiffies + tick; @@ -531,7 +535,9 @@ static struct snd_pcm_hardware loopback_pcm_hardware = .channels_max = 32, .buffer_bytes_max = 2 * 1024 * 1024, .period_bytes_min = 64, - .period_bytes_max = 2 * 1024 * 1024, + /* note check overflow in frac_pos() using pcm_rate_shift before + changing period_bytes_max value */ + .period_bytes_max = 1024 * 1024, .periods_min = 1, .periods_max = 1024, .fifo_size = 0, |