From 548af581f939bbad7fa21fa8dace32e5eef075e5 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Wed, 17 May 2017 06:50:32 +0000
Subject: ASoC: rsnd: check src mod pointer for rsnd_mod_id()

commit 374503c6109e60f48fa9b11341b14466f07bd3f4 upstream.

Without this patch, gcc 4.9.x says

    sound/soc/sh/rcar/cmd.c: In function 'rsnd_cmd_init':
    sound/soc/sh/rcar/cmd.c:85:14: warning: array subscript is below array\
	bounds [-Warray-bounds]
	data = path[rsnd_mod_id(src)] |

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/soc/sh/rcar/cmd.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'sound')

diff --git a/sound/soc/sh/rcar/cmd.c b/sound/soc/sh/rcar/cmd.c
index 7d92a24b7cfa..98835e9d1d7d 100644
--- a/sound/soc/sh/rcar/cmd.c
+++ b/sound/soc/sh/rcar/cmd.c
@@ -82,6 +82,9 @@ static int rsnd_cmd_init(struct rsnd_mod *mod,
 			[9] = 0x2,
 		};
 
+		if (unlikely(!src))
+			return -EIO;
+
 		data = path[rsnd_mod_id(src)] |
 			cmd_case[rsnd_mod_id(src)] << 16;
 	}
-- 
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