From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Fri, 11 Oct 2013 07:07:48 +0000 (-0700)
Subject: ASoC: rcar: add ID check on rsnd_dai_get()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2192f81c53a7879c803f0f7d6c49645fdf6c2f6a;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ASoC: rcar: add ID check on rsnd_dai_get()

checking id in rsnd_dai_get() is good idea

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
---

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 28c24fcf8bc7..b234ed663073 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -318,6 +318,9 @@ int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai)
 
 struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id)
 {
+	if ((id < 0) || (id >= rsnd_dai_nr(priv)))
+		return NULL;
+
 	return priv->rdai + id;
 }