[PATCH 5/5] ASoC: qdsp6: q6routing: validate port id before setting up route

[Srinivas Kandagatla]

Validate port id before it starts sending commands to dsp this would
make error handling simpler.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
 sound/soc/qcom/qdsp6/q6routing.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sound/soc/qcom/qdsp6/q6routing.c b/sound/soc/qcom/qdsp6/q6routing.c
index 243b8179e59d..cd74681e811e 100644
--- a/sound/soc/qcom/qdsp6/q6routing.c
+++ b/sound/soc/qcom/qdsp6/q6routing.c
@@ -372,6 +372,12 @@ int q6routing_stream_open(int fedai_id, int perf_mode,
 	}
 
 	session = &routing_data->sessions[stream_id - 1];
+	if (session->port_id < 0) {
+		dev_err(routing_data->dev, "Routing not setup for MultiMedia%d Session\n",
+			session->fedai_id);
+		return -EINVAL;
+	}
+
 	pdata = &routing_data->port_data[session->port_id];
 
 	mutex_lock(&routing_data->lock);
-- 
2.21.0