[PATCH 5.17 400/772] ASoC: ti: j721e-evm: Fix refcount leak in j721e_soc_probe_*

Greg Kroah-Hartman
2022-06-07T21:12:02Z

From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit a34840c4eb3278a7c29c9c57a65ce7541c66f9f2 ]

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not needed anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: 6748d0559059 ("ASoC: ti: Add custom machine driver for j721e EVM (CPB and IVI)")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220512111331.44774-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/ti/j721e-evm.c | 44 ++++++++++++++++++++++++++++++----------
1 file changed, 33 insertions(+), 11 deletions(-)

diff --git a/sound/soc/ti/j721e-evm.c b/sound/soc/ti/j721e-evm.c
index 4077e15ec48b..6a969874c927 100644
--- a/sound/soc/ti/j721e-evm.c
+++ b/sound/soc/ti/j721e-evm.c
@@ -630,17 +630,18 @@ static int j721e_soc_probe_cpb(struct j721e_priv *priv, int *link_idx,
codec_node = of_parse_phandle(node, "ti,cpb-codec", 0);
if (!codec_node) {
dev_err(priv->dev, "CPB codec node is not provided\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto put_dai_node;
}

domain = &priv->audio_domains[J721E_AUDIO_DOMAIN_CPB];
ret = j721e_get_clocks(priv->dev, &domain->codec, "cpb-codec-scki");
if (ret)
- return ret;
+ goto put_codec_node;

ret = j721e_get_clocks(priv->dev, &domain->mcasp, "cpb-mcasp-auxclk");
if (ret)
- return ret;
+ goto put_codec_node;

/*
* Common Processor Board, two links
@@ -650,8 +651,10 @@ static int j721e_soc_probe_cpb(struct j721e_priv *priv, int *link_idx,
comp_count = 6;
compnent = devm_kzalloc(priv->dev, comp_count * sizeof(*compnent),
GFP_KERNEL);
- if (!compnent)
- return -ENOMEM;
+ if (!compnent) {
+ ret = -ENOMEM;
+ goto put_codec_node;
+ }

comp_idx = 0;
priv->dai_links[*link_idx].cpus = &compnent[comp_idx++];
@@ -702,6 +705,12 @@ static int j721e_soc_probe_cpb(struct j721e_priv *priv, int *link_idx,
(*conf_idx)++;

return 0;
+
+put_codec_node:
+ of_node_put(codec_node);
+put_dai_node:
+ of_node_put(dai_node);
+ return ret;
}

static int j721e_soc_probe_ivi(struct j721e_priv *priv, int *link_idx,
@@ -726,23 +735,25 @@ static int j721e_soc_probe_ivi(struct j721e_priv *priv, int *link_idx,
codeca_node = of_parse_phandle(node, "ti,ivi-codec-a", 0);
if (!codeca_node) {
dev_err(priv->dev, "IVI codec-a node is not provided\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto put_dai_node;
}

codecb_node = of_parse_phandle(node, "ti,ivi-codec-b", 0);
if (!codecb_node) {
dev_warn(priv->dev, "IVI codec-b node is not provided\n");
- return 0;
+ ret = 0;
+ goto put_codeca_node;
}

domain = &priv->audio_domains[J721E_AUDIO_DOMAIN_IVI];
ret = j721e_get_clocks(priv->dev, &domain->codec, "ivi-codec-scki");
if (ret)
- return ret;
+ goto put_codecb_node;

ret = j721e_get_clocks(priv->dev, &domain->mcasp, "ivi-mcasp-auxclk");
if (ret)
- return ret;
+ goto put_codecb_node;

/*
* IVI extension, two links
@@ -754,8 +765,10 @@ static int j721e_soc_probe_ivi(struct j721e_priv *priv, int *link_idx,
comp_count = 8;
compnent = devm_kzalloc(priv->dev, comp_count * sizeof(*compnent),
GFP_KERNEL);
- if (!compnent)
- return -ENOMEM;
+ if (!compnent) {
+ ret = -ENOMEM;
+ goto put_codecb_node;
+ }

comp_idx = 0;
priv->dai_links[*link_idx].cpus = &compnent[comp_idx++];
@@ -816,6 +829,15 @@ static int j721e_soc_probe_ivi(struct j721e_priv *priv, int *link_idx,
(*conf_idx)++;

return 0;
+
+
+put_codecb_node:
+ of_node_put(codecb_node);
+put_codeca_node:
+ of_node_put(codeca_node);
+put_dai_node:
+ of_node_put(dai_node);
+ return ret;
}

static int j721e_soc_probe(struct platform_device *pdev)
--
2.35.1