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Diffstat (limited to 'sound/soc/sh/rcar/scu.c')
-rw-r--r--sound/soc/sh/rcar/scu.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/sound/soc/sh/rcar/scu.c b/sound/soc/sh/rcar/scu.c
index 2df2e9150b89..fa8fa15860b9 100644
--- a/sound/soc/sh/rcar/scu.c
+++ b/sound/soc/sh/rcar/scu.c
@@ -68,7 +68,7 @@ static int rsnd_scu_set_route(struct rsnd_priv *priv,
return 0;
id = rsnd_mod_id(mod);
- if (id < 0 || id > ARRAY_SIZE(routes))
+ if (id < 0 || id >= ARRAY_SIZE(routes))
return -EIO;
/*
@@ -146,20 +146,26 @@ static int rsnd_scu_set_hpbif(struct rsnd_priv *priv,
return 0;
}
+bool rsnd_scu_hpbif_is_enable(struct rsnd_mod *mod)
+{
+ struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
+ u32 flags = rsnd_scu_mode_flags(scu);
+
+ return !!(flags & RSND_SCU_USE_HPBIF);
+}
+
static int rsnd_scu_start(struct rsnd_mod *mod,
struct rsnd_dai *rdai,
struct rsnd_dai_stream *io)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
- struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
struct device *dev = rsnd_priv_to_dev(priv);
- u32 flags = rsnd_scu_mode_flags(scu);
int ret;
/*
* SCU will be used if it has RSND_SCU_USE_HPBIF flags
*/
- if (!(flags & RSND_SCU_USE_HPBIF)) {
+ if (!rsnd_scu_hpbif_is_enable(mod)) {
/* it use PIO transter */
dev_dbg(dev, "%s%d is not used\n",
rsnd_mod_name(mod), rsnd_mod_id(mod));
@@ -192,7 +198,8 @@ static struct rsnd_mod_ops rsnd_scu_ops = {
struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id)
{
- BUG_ON(id < 0 || id >= rsnd_scu_nr(priv));
+ if (WARN_ON(id < 0 || id >= rsnd_scu_nr(priv)))
+ id = 0;
return &((struct rsnd_scu *)(priv->scu) + id)->mod;
}