From 52dc68524327ed7bedfc2856bca4fa634f11141a Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Thu, 17 Dec 2015 02:56:31 +0000
Subject: [PATCH] ASoC: rsnd: rsnd_dai_connect() returns error if it connect to
 existing mod

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/sh/rcar/core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 44f32c1db05d..e59dc8a461bb 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -354,6 +354,9 @@ int rsnd_dai_connect(struct rsnd_mod *mod,
 	if (!mod)
 		return -EIO;
 
+	if (io->mod[type])
+		return -EINVAL;
+
 	priv = rsnd_mod_to_priv(mod);
 	dev = rsnd_priv_to_dev(priv);