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PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events 

of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
This function only calls of_node_put() in normal path,
missing it in error paths.
Add missing of_node_put() to avoid refcount leak.

Fixes: f262f28c14 ("PM / devfreq: event: Add devfreq_event class")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Miaoqian Lin 2022-05-26 12:28:56 +04:00 committed by Chanwoo Choi
parent 20e6c3cc90
commit f44b799603
1 changed files with 6 additions and 2 deletions
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8
drivers/devfreq/event/exynos-ppmu.c
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@ -519,15 +519,19 @@ static int of_get_devfreq_events(struct device_node *np,
count = of_get_child_count(events_np);
desc = devm_kcalloc(dev, count, sizeof(*desc), GFP_KERNEL);
if (!desc)
if (!desc) {
of_node_put(events_np);
return -ENOMEM;
}
info->num_events = count;
of_id = of_match_device(exynos_ppmu_id_match, dev);
if (of_id)
info->ppmu_type = (enum exynos_ppmu_type)of_id->data;
else
else {
of_node_put(events_np);
return -EINVAL;
}
j = 0;
for_each_child_of_node(events_np, node) {