ASoC: rcar: bugfix: it cares about the non-src case

src might not exist.
kernel will be hung-up without this patch in such case.

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

1 files changed, 11 insertions, 7 deletions

diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index eee75ebf961c..6232b7d307aa 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -182,16 +182,20 @@ unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv,
                                    struct rsnd_dai_stream *io,
                                    struct snd_pcm_runtime *runtime)
 {
+        struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
         struct rsnd_src *src;
-        unsigned int rate;
+        unsigned int rate = 0;
 
-        src = rsnd_mod_to_src(rsnd_io_to_mod_src(io));
+        if (src_mod) {
+                src = rsnd_mod_to_src(src_mod);
+
+                /*
+                 * return convert rate if SRC is used,
+                 * otherwise, return runtime->rate as usual
+                 */
+                rate = rsnd_src_convert_rate(src);
+        }
 
-        /*
-         * return convert rate if SRC is used,
-         * otherwise, return runtime->rate as usual
-         */
-        rate = rsnd_src_convert_rate(src);
         if (!rate)
                 rate = runtime->rate;