From: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
[ Upstream commit c1e6414cdc371f9ed82cefebba7538499a3059f9 ]
for_each_child_of_node returns a node pointer np with
refcount incremented. So when devm_kzalloc fails, a
pairing refcount decrement is needed to keep np's
refcount balanced.
Fixes: 16395ceee11f8 ("ASoC: qcom: common: Fix NULL pointer in of parser")
Signed-off-by: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20200820042828.10308-1-dinghao.liu@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/qcom/common.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/sound/soc/qcom/common.c b/sound/soc/qcom/common.c
index 8ada4ecba8472..10322690c0eaa 100644
--- a/sound/soc/qcom/common.c
+++ b/sound/soc/qcom/common.c
@@ -45,8 +45,10 @@ int qcom_snd_parse_of(struct snd_soc_card *card)
for_each_child_of_node(dev->of_node, np) {
dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
- if (!dlc)
- return -ENOMEM;
+ if (!dlc) {
+ ret = -ENOMEM;
+ goto err;
+ }
link->cpus = &dlc[0];
link->platforms = &dlc[1];
--
2.25.1
