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| author |   Miaoqian Lin <linmq006@gmail.com> | 2022-05-26 12:28:56 +0400 |
|---|---|---|
| committer |   Chanwoo Choi <cw00.choi@samsung.com> | 2022-06-30 05:11:17 +0900 |
| commit | f44b799603a9b5d2e375b0b2d54dd0b791eddfc2 (patch) | |
| tree | 440c496a612fc3d9b284d731c6ff2c4adf2e6132 /drivers/devfreq/event | |
| parent | PM / devfreq: passive: Use HZ_PER_KHZ macro in units.h (diff) | |
| download | linux-dev-f44b799603a9b5d2e375b0b2d54dd0b791eddfc2.tar.xz linux-dev-f44b799603a9b5d2e375b0b2d54dd0b791eddfc2.zip | |
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/event')
| -rw-r--r-- | drivers/devfreq/event/exynos-ppmu.c | 8 |
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) { |