for_each_child_of_node performs an of_node_get on each iteration, so a jump out of the loop requires an of_node_put.
The semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr):
// <smpl> @@ local idexpression n; expression e,e1; identifier l; @@
for_each_child_of_node(e1,n) { ... ( of_node_put(n); | e = n | + of_node_put(n); ? goto l; ) ... } ... l: ... when != n // </smpl>
Signed-off-by: Julia Lawall Julia.Lawall@lip6.fr
--- sound/soc/sh/rcar/ctu.c | 5 ++++- sound/soc/sh/rcar/dvc.c | 5 ++++- sound/soc/sh/rcar/mix.c | 5 ++++- sound/soc/sh/rcar/src.c | 6 +++++- sound/soc/sh/rcar/ssi.c | 6 +++++- 5 files changed, 22 insertions(+), 5 deletions(-)
diff -u -p a/sound/soc/sh/rcar/mix.c b/sound/soc/sh/rcar/mix.c --- a/sound/soc/sh/rcar/mix.c +++ b/sound/soc/sh/rcar/mix.c @@ -168,13 +168,16 @@ int rsnd_mix_probe(struct rsnd_priv *pri clk = devm_clk_get(dev, name); if (IS_ERR(clk)) { ret = PTR_ERR(clk); + of_node_put(np); goto rsnd_mix_probe_done; }
ret = rsnd_mod_init(priv, rsnd_mod_get(mix), &rsnd_mix_ops, clk, rsnd_mod_get_status, RSND_MOD_MIX, i); - if (ret) + if (ret) { + of_node_put(np); goto rsnd_mix_probe_done; + }
i++; } diff -u -p a/sound/soc/sh/rcar/ctu.c b/sound/soc/sh/rcar/ctu.c --- a/sound/soc/sh/rcar/ctu.c +++ b/sound/soc/sh/rcar/ctu.c @@ -394,13 +394,16 @@ int rsnd_ctu_probe(struct rsnd_priv *pri clk = devm_clk_get(dev, name); if (IS_ERR(clk)) { ret = PTR_ERR(clk); + of_node_put(np); goto rsnd_ctu_probe_done; }
ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops, clk, rsnd_mod_get_status, RSND_MOD_CTU, i); - if (ret) + if (ret) { + of_node_put(np); goto rsnd_ctu_probe_done; + }
i++; } diff -u -p a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -1079,6 +1079,7 @@ int rsnd_ssi_probe(struct rsnd_priv *pri clk = devm_clk_get(dev, name); if (IS_ERR(clk)) { ret = PTR_ERR(clk); + of_node_put(np); goto rsnd_ssi_probe_done; }
@@ -1091,6 +1092,7 @@ int rsnd_ssi_probe(struct rsnd_priv *pri ssi->irq = irq_of_parse_and_map(np, 0); if (!ssi->irq) { ret = -EINVAL; + of_node_put(np); goto rsnd_ssi_probe_done; }
@@ -1101,8 +1103,10 @@ int rsnd_ssi_probe(struct rsnd_priv *pri
ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk, rsnd_ssi_get_status, RSND_MOD_SSI, i); - if (ret) + if (ret) { + of_node_put(np); goto rsnd_ssi_probe_done; + }
i++; } diff -u -p a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c --- a/sound/soc/sh/rcar/src.c +++ b/sound/soc/sh/rcar/src.c @@ -581,20 +581,24 @@ int rsnd_src_probe(struct rsnd_priv *pri src->irq = irq_of_parse_and_map(np, 0); if (!src->irq) { ret = -EINVAL; + of_node_put(np); goto rsnd_src_probe_done; }
clk = devm_clk_get(dev, name); if (IS_ERR(clk)) { ret = PTR_ERR(clk); + of_node_put(np); goto rsnd_src_probe_done; }
ret = rsnd_mod_init(priv, rsnd_mod_get(src), &rsnd_src_ops, clk, rsnd_mod_get_status, RSND_MOD_SRC, i); - if (ret) + if (ret) { + of_node_put(np); goto rsnd_src_probe_done; + }
skip: i++; diff -u -p a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c --- a/sound/soc/sh/rcar/dvc.c +++ b/sound/soc/sh/rcar/dvc.c @@ -380,13 +380,16 @@ int rsnd_dvc_probe(struct rsnd_priv *pri clk = devm_clk_get(dev, name); if (IS_ERR(clk)) { ret = PTR_ERR(clk); + of_node_put(np); goto rsnd_dvc_probe_done; }
ret = rsnd_mod_init(priv, rsnd_mod_get(dvc), &rsnd_dvc_ops, clk, rsnd_mod_get_status, RSND_MOD_DVC, i); - if (ret) + if (ret) { + of_node_put(np); goto rsnd_dvc_probe_done; + }
i++; }