We should call of_node_put() for the reference before its replacement as it returned by of_get_parent() which has increased the refcount. Besides, we should also call of_node_put() before return.

Fixes: c8c74939f791 ("ASoC: audio-graph-card2: add Multi CPU/Codec support") Signed-off-by: Liang He windhl@126.com --- sound/soc/generic/audio-graph-card2.c | 35 +++++++++++++++++++-------- 1 file changed, 25 insertions(+), 10 deletions(-)

diff --git a/sound/soc/generic/audio-graph-card2.c b/sound/soc/generic/audio-graph-card2.c index 77ac4051b827..4f6bae73bd5e 100644 --- a/sound/soc/generic/audio-graph-card2.c +++ b/sound/soc/generic/audio-graph-card2.c @@ -229,7 +229,8 @@ enum graph_type {

static enum graph_type __graph_get_type(struct device_node *lnk) { - struct device_node *np; + struct device_node *np, *parent_np; + enum graph_type ret;

/* * target { @@ -240,19 +241,33 @@ static enum graph_type __graph_get_type(struct device_node *lnk) * }; */ np = of_get_parent(lnk); - if (of_node_name_eq(np, "ports")) - np = of_get_parent(np); + if (of_node_name_eq(np, "ports")) { + parent_np = of_get_parent(np); + of_node_put(np); + np = parent_np; + }

- if (of_node_name_eq(np, GRAPH_NODENAME_MULTI)) - return GRAPH_MULTI; + if (of_node_name_eq(np, GRAPH_NODENAME_MULTI)) { + ret = GRAPH_MULTI; + goto out_put; + }

- if (of_node_name_eq(np, GRAPH_NODENAME_DPCM)) - return GRAPH_DPCM; + if (of_node_name_eq(np, GRAPH_NODENAME_DPCM)) { + ret = GRAPH_DPCM; + goto out_put; + }

- if (of_node_name_eq(np, GRAPH_NODENAME_C2C)) - return GRAPH_C2C; + if (of_node_name_eq(np, GRAPH_NODENAME_C2C)) { + ret = GRAPH_C2C; + goto out_put; + } + + ret = GRAPH_NORMAL; + +out_put: + of_node_put(np); + return ret;

- return GRAPH_NORMAL; }

static enum graph_type graph_get_type(struct asoc_simple_priv *priv,