[alsa-devel] [PATCH RFC 05/15] ASoC: qcom: ipq806x: add error in dma allocation.

[Srinivas Kandagatla]

ipq806x is only ever tested for playback so return error in dma allocation
if the stream direction is capture.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
 sound/soc/qcom/lpass-ipq806x.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/qcom/lpass-ipq806x.c b/sound/soc/qcom/lpass-ipq806x.c
index 119048c..8bdcdcb 100644
--- a/sound/soc/qcom/lpass-ipq806x.c
+++ b/sound/soc/qcom/lpass-ipq806x.c
@@ -65,7 +65,10 @@ static struct snd_soc_dai_driver ipq806x_lpass_cpu_dai_driver = {
 
 static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata, int dir)
 {
-	return IPQ806X_LPAIF_RDMA_CHAN_MI2S;
+	if (dir == SNDRV_PCM_STREAM_PLAYBACK)
+		return IPQ806X_LPAIF_RDMA_CHAN_MI2S;
+	else	/* Capture not supported */
+		return -EINVAL;
 }
 
 static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
-- 
1.9.1