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authorMiaoqian Lin <linmq006@gmail.com>2022-05-26 12:28:56 +0400
committerChanwoo Choi <cw00.choi@samsung.com>2022-06-30 05:11:17 +0900
commitf44b799603a9b5d2e375b0b2d54dd0b791eddfc2 (patch)
tree440c496a612fc3d9b284d731c6ff2c4adf2e6132 /drivers/devfreq
parent20e6c3cc90c0a86dba659dd9e7d60b429d88746d (diff)
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: f262f28c1470 ("PM / devfreq: event: Add devfreq_event class") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
-rw-r--r--drivers/devfreq/event/exynos-ppmu.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c
index 9b849d781116..a443e7c42daf 100644
--- a/drivers/devfreq/event/exynos-ppmu.c
+++ b/drivers/devfreq/event/exynos-ppmu.c
@@ -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) {