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-rw-r--r--sound/soc/omap/omap-mcbsp.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 27144a67e5ec..1046083e90a0 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -138,13 +138,15 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream,
if (mcbsp->pdata->buffer_size) {
/*
* Rule for the buffer size. We should not allow
- * smaller buffer than the FIFO size to avoid underruns
+ * smaller buffer than the FIFO size to avoid underruns.
+ * This applies only for the playback stream.
*/
- snd_pcm_hw_rule_add(substream->runtime, 0,
- SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
- omap_mcbsp_hwrule_min_buffersize,
- mcbsp,
- SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_pcm_hw_rule_add(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
+ omap_mcbsp_hwrule_min_buffersize,
+ mcbsp,
+ SNDRV_PCM_HW_PARAM_CHANNELS, -1);
/* Make sure, that the period size is always even */
snd_pcm_hw_constraint_step(substream->runtime, 0,
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