ASoC: qcom: ipq806x: add error in dma allocation.

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@linaro.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/sound/soc/qcom/lpass-ipq806x.c b/sound/soc/qcom/lpass-ipq806x.c
index 119048c016ec..29a35296d8da 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 currently not implemented */
+                return -EINVAL;
 }
 
 static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)