[ Upstream commit 1bcc1fd64e4dd903f4d868a9e053986e3b102713 ]
After calling of_node_put() on the codec_ep and codec_port variables,
they are still being used, which may result in use-after-free.
We fix this issue by calling of_node_put() after the last usage.
Fixes: fce9b90c1ab7 ("ASoC: audio-graph-card: cleanup DAI link loop method -
step2")
Signed-off-by: Wen Yang <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: Mark Brown <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Kuninori Morimoto <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link:
https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
sound/soc/generic/audio-graph-card.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/soc/generic/audio-graph-card.c
b/sound/soc/generic/audio-graph-card.c
index ec7e673ba475..70ed28d97d49 100644
--- a/sound/soc/generic/audio-graph-card.c
+++ b/sound/soc/generic/audio-graph-card.c
@@ -435,9 +435,6 @@ static int graph_for_each_link(struct asoc_simple_priv
*priv,
codec_ep = of_graph_get_remote_endpoint(cpu_ep);
codec_port = of_get_parent(codec_ep);
- of_node_put(codec_ep);
- of_node_put(codec_port);
-
/* get convert-xxx property */
memset(&adata, 0, sizeof(adata));
graph_parse_convert(dev, codec_ep, &adata);
@@ -457,6 +454,9 @@ static int graph_for_each_link(struct asoc_simple_priv
*priv,
else
ret = func_noml(priv, cpu_ep, codec_ep, li);
+ of_node_put(codec_ep);
+ of_node_put(codec_port);
+
if (ret < 0)
return ret;
--
2.20.1
