From: Wen Yang wen.yang99@zte.com.cn
[ Upstream commit aa2e362cb6b3f5ca88093ada01e1a0ace8a517b2 ]
After calling of_node_put() on the ports, port, and node variables, they are still being used, which may result in use-after-free. Fix this issue by calling of_node_put() after the last usage.
Fixes: dd98fbc558a0 ("ASoC: audio-graph-card: cleanup DAI link loop method - step1") Link: https://lore.kernel.org/r/1562743509-30496-4-git-send-email-wen.yang99@zte.c... Signed-off-by: Wen Yang wen.yang99@zte.com.cn Acked-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/generic/audio-graph-card.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c index 70ed28d97d497..d5188a179378f 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -222,10 +222,6 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv,
dev_dbg(dev, "link_of DPCM (%pOF)\n", ep);
- of_node_put(ports); - of_node_put(port); - of_node_put(node); - if (li->cpu) { int is_single_links = 0;
@@ -243,17 +239,17 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv,
ret = asoc_simple_parse_cpu(ep, dai_link, &is_single_links); if (ret) - return ret; + goto out_put_node;
ret = asoc_simple_parse_clk_cpu(dev, ep, dai_link, dai); if (ret < 0) - return ret; + goto out_put_node;
ret = asoc_simple_set_dailink_name(dev, dai_link, "fe.%s", dai_link->cpu_dai_name); if (ret < 0) - return ret; + goto out_put_node;
/* card->num_links includes Codec */ asoc_simple_canonicalize_cpu(dai_link, is_single_links); @@ -277,17 +273,17 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv,
ret = asoc_simple_parse_codec(ep, dai_link); if (ret < 0) - return ret; + goto out_put_node;
ret = asoc_simple_parse_clk_codec(dev, ep, dai_link, dai); if (ret < 0) - return ret; + goto out_put_node;
ret = asoc_simple_set_dailink_name(dev, dai_link, "be.%s", codecs->dai_name); if (ret < 0) - return ret; + goto out_put_node;
/* check "prefix" from top node */ snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node, @@ -307,19 +303,23 @@ static int graph_dai_link_of_dpcm(struct asoc_simple_priv *priv,
ret = asoc_simple_parse_tdm(ep, dai); if (ret) - return ret; + goto out_put_node;
ret = asoc_simple_parse_daifmt(dev, cpu_ep, codec_ep, NULL, &dai_link->dai_fmt); if (ret < 0) - return ret; + goto out_put_node;
dai_link->dpcm_playback = 1; dai_link->dpcm_capture = 1; dai_link->ops = &graph_ops; dai_link->init = asoc_simple_dai_init;
- return 0; +out_put_node: + of_node_put(ports); + of_node_put(port); + of_node_put(node); + return ret; }
static int graph_dai_link_of(struct asoc_simple_priv *priv,