[PATCH 6.1 132/259] power: supply: rk817: Fix node refcount leak

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6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chris Morgan <macromorgan@xxxxxxxxxxx>

[ Upstream commit 488ef44c068e79752dba8eda0b75f524f111a695 ]

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@xxxxxxxxxx>
Closes: https://lore.kernel.org/linux-pm/dc0bb0f8-212d-4be7-be69-becd2a3f9a80@kili.mountain/
Signed-off-by: Chris Morgan <macromorgan@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230920145644.57964-1-macroalpha82@xxxxxxxxx
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/power/supply/rk817_charger.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/power/supply/rk817_charger.c b/drivers/power/supply/rk817_charger.c
index f1b431aa0e4f2..e30ef601d91da 100644
--- a/drivers/power/supply/rk817_charger.c
+++ b/drivers/power/supply/rk817_charger.c
@@ -1058,6 +1058,13 @@ 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);
@@ -1074,11 +1081,13 @@ 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;
 
-- 
2.40.1






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