regulator: Add missing of_node_put()

of_find_node_by_name() returns a node pointer with refcount incremented, use
of_node_put() on it when done.

of_find_node_by_name() will call of_node_put() against from parameter,
thus we also need to call of_node_get(from) before calling
of_find_node_by_name().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index 836908ce505e..5abd0d3288f0 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -960,7 +960,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
         struct max8997_regulator_data *rdata;
         unsigned int i, dvs_voltage_nr = 1, ret;
 
-        pmic_np = iodev->dev->of_node;
+        pmic_np = of_node_get(iodev->dev->of_node);
         if (!pmic_np) {
                 dev_err(&pdev->dev, "could not find pmic sub-node\n");
                 return -ENODEV;
@@ -980,6 +980,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
         rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
                                 pdata->num_regulators, GFP_KERNEL);
         if (!rdata) {
+                of_node_put(regulators_np);
                 dev_err(&pdev->dev, "could not allocate memory for regulator data\n");
                 return -ENOMEM;
         }
@@ -1002,6 +1003,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
                 rdata->reg_node = reg_np;
                 rdata++;
         }
+        of_node_put(regulators_np);
 
         if (of_get_property(pmic_np, "max8997,pmic-buck1-uses-gpio-dvs", NULL))
                 pdata->buck1_gpiodvs = true;