diff options
| author | Troy Kisky <troy.kisky@boundarydevices.com> | 2009-08-06 16:55:32 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-08-07 11:38:29 +0100 |
| commit | 6a90d536feeccb2c84a2831252b1ed4642684da3 (patch) | |
| tree | 905efb7119d18da62350bf797d6399191a316276 /sound/soc/davinci/davinci-pcm.c | |
| parent | 9bb74150561bb337b49192a8f8e8f812057b88ea (diff) | |
ASoC: DaVinci: pcm, constrain buffer size to multiple of period
The dma setup code assumes that the buffer size is a multiple
of the period size.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/davinci/davinci-pcm.c')
| -rw-r--r-- | sound/soc/davinci/davinci-pcm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/soc/davinci/davinci-pcm.c b/sound/soc/davinci/davinci-pcm.c index 8fd0c3cdc71..ab43a539c11 100644 --- a/sound/soc/davinci/davinci-pcm.c +++ b/sound/soc/davinci/davinci-pcm.c @@ -244,6 +244,11 @@ static int davinci_pcm_open(struct snd_pcm_substream *substream) int ret = 0; snd_soc_set_runtime_hwparams(substream, &davinci_pcm_hardware); + /* ensure that buffer size is a multiple of period size */ + ret = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + if (ret < 0) + return ret; prtd = kzalloc(sizeof(struct davinci_runtime_data), GFP_KERNEL); if (prtd == NULL) |