ASoC: rsnd: rsnd_ssi_run_mods() needs to care ssi_parent_mod

SSI parent mod might be NULL. ssi_parent_mod() needs to care
about it. Otherwise, it uses negative shift.
This patch fixes it.

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

1 files changed, 8 insertions, 3 deletions

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 58e3420a1f05..43c31d153ea6 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -195,10 +195,15 @@ static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io)
 {
         struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
         struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io);
+        u32 mods;
 
-        return rsnd_ssi_multi_slaves_runtime(io) |
-                1 << rsnd_mod_id(ssi_mod) |
-                1 << rsnd_mod_id(ssi_parent_mod);
+        mods = rsnd_ssi_multi_slaves_runtime(io) |
+                1 << rsnd_mod_id(ssi_mod);
+
+        if (ssi_parent_mod)
+                mods |= 1 << rsnd_mod_id(ssi_parent_mod);
+
+        return mods;
 }
 
 u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io)