Bluetooth: host: a2dp: Fix stream recv callback not be checked

Now when role is sink and source sends data, stream recv callback is
not registered, apps works fail. so stream recv callback should be
checked.

Signed-off-by: Cheng Chang <[email protected]>

Author: CC0918

subsys/bluetooth/host/classic/a2dp.c

@@ -283,6 +283,11 @@ static void bt_a2dp_media_data_callback(struct bt_avdtp_sep *sep, struct net_buf
 	stream = ep->stream;
 	media_hdr = net_buf_pull_mem(buf, sizeof(*media_hdr));
 
+	if (stream->ops == NULL || stream->ops->recv == NULL) {
+		LOG_WRN("No recv callback registered for stream");
+		return;
+	}
+
 	stream->ops->recv(stream, buf, sys_be16_to_cpu(media_hdr->sequence_number),
 			  sys_be32_to_cpu(media_hdr->time_stamp));
 }