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ASoC: qcom: common: Fix refcount imbalance on error 

[ Upstream commit c1e6414cdc ]

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: 16395ceee1 ("ASoC: qcom: common: Fix NULL pointer in of parser")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Link: https://lore.kernel.org/r/20200820042828.10308-1-dinghao.liu@zju.edu.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Dinghao Liu 2020-08-20 12:28:27 +08:00 committed by Greg Kroah-Hartman
parent 911c69245a
commit f6d4afd008
1 changed files with 4 additions and 2 deletions
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6
sound/soc/qcom/common.c
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@ -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];