diff options
| author | Chris Morgan <macromorgan@hotmail.com> | 2023-09-20 16:56:44 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2023-09-20 19:37:15 +0200 |
| commit | 488ef44c068e79752dba8eda0b75f524f111a695 (patch) | |
| tree | e4f701fcc134dfe8ce1c7f0a06eb2364f4dd84c7 /drivers | |
| parent | power: supply: core: fix use after free in uevent (diff) | |
| download | linux-488ef44c068e79752dba8eda0b75f524f111a695.tar.xz linux-488ef44c068e79752dba8eda0b75f524f111a695.zip | |
power: supply: rk817: Fix node refcount leak
Dan Carpenter reports that the Smatch static checker warning has found
that there is another refcount leak in the probe function. While
of_node_put() was added in one of the return paths, it should in
fact be added for ALL return paths that return an error and at driver
removal time.
Fixes: 54c03bfd094f ("power: supply: Fix refcount leak in rk817_charger_probe")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Closes: https://lore.kernel.org/linux-pm/dc0bb0f8-212d-4be7-be69-becd2a3f9a80@kili.mountain/
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20230920145644.57964-1-macroalpha82@gmail.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/supply/rk817_charger.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/power/supply/rk817_charger.c b/drivers/power/supply/rk817_charger.c index c2510078eb2d..f64daf5a41d9 100644 --- a/drivers/power/supply/rk817_charger.c +++ b/drivers/power/supply/rk817_charger.c @@ -1045,6 +1045,13 @@ static void rk817_charging_monitor(struct work_struct *work) queue_delayed_work(system_wq, &charger->work, msecs_to_jiffies(8000)); } +static void rk817_cleanup_node(void *data) +{ + struct device_node *node = data; + + of_node_put(node); +} + static int rk817_charger_probe(struct platform_device *pdev) { struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent); @@ -1061,11 +1068,13 @@ static int rk817_charger_probe(struct platform_device *pdev) if (!node) return -ENODEV; + ret = devm_add_action_or_reset(&pdev->dev, rk817_cleanup_node, node); + if (ret) + return ret; + charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL); - if (!charger) { - of_node_put(node); + if (!charger) return -ENOMEM; - } charger->rk808 = rk808; |