diff options
| -rw-r--r-- | drivers/media/video/saa7134/saa7134-alsa.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c index b9c5cf7dc849..ece177de72a5 100644 --- a/drivers/media/video/saa7134/saa7134-alsa.c +++ b/drivers/media/video/saa7134/saa7134-alsa.c @@ -457,7 +457,7 @@ static struct snd_pcm_hardware snd_card_saa7134_capture = .buffer_bytes_max = (256*1024), .period_bytes_min = 64, .period_bytes_max = (256*1024), - .periods_min = 2, + .periods_min = 4, .periods_max = 1024, }; @@ -491,7 +491,7 @@ static int snd_card_saa7134_hw_params(struct snd_pcm_substream * substream, snd_assert(period_size >= 0x100 && period_size <= 0x10000, return -EINVAL); - snd_assert(periods >= 2, return -EINVAL); + snd_assert(periods >= 4, return -EINVAL); snd_assert(period_size * periods <= 1024 * 1024, return -EINVAL); dev = saa7134->dev; @@ -647,7 +647,14 @@ static int snd_card_saa7134_capture_open(struct snd_pcm_substream * substream) saa7134_tvaudio_setmute(dev); } - if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) + err = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) + return err; + + err = snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_PERIODS, 2); + if (err < 0) return err; return 0; |