There is of_node_get(client->dev.of_node) in ltc294x_i2c_probe(),
but these is no of_node_put() somethere in the driver.
The patch adds one on error and normal paths.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshi...@ispras.ru>
---
drivers/power/supply/ltc2941-battery-gauge.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/power/supply/ltc2941-battery-gauge.c
b/drivers/power/supply/ltc2941-battery-gauge.c
index 4f129bb4c972..7854a89b3332 100644
--- a/drivers/power/supply/ltc2941-battery-gauge.c
+++ b/drivers/power/supply/ltc2941-battery-gauge.c
@@ -481,7 +481,7 @@ static int ltc294x_i2c_probe(struct i2c_client *client,
if (ret < 0) {
dev_err(&client->dev,
"Could not find lltc,resistor-sense in devicetree\n");
- return ret;
+ goto err_node_put;
}
info->r_sense = r_sense;
@@ -511,7 +511,7 @@ static int ltc294x_i2c_probe(struct i2c_client *client,
if (ret < 0) {
dev_err(&client->dev,
"Could not read status register\n");
- return ret;
+ goto err_node_put;
}
if (status & LTC2941_REG_STATUS_CHIP_ID)
info->id = LTC2941_ID;
@@ -550,19 +550,25 @@ static int ltc294x_i2c_probe(struct i2c_client *client,
ret = ltc294x_reset(info, prescaler_exp);
if (ret < 0) {
dev_err(&client->dev, "Communication with chip failed\n");
- return ret;
+ goto err_node_put;
}
info->supply = power_supply_register(&client->dev, &info->supply_desc,
&psy_cfg);
if (IS_ERR(info->supply)) {
dev_err(&client->dev, "failed to register ltc2941\n");
- return PTR_ERR(info->supply);
+ ret = PTR_ERR(info->supply);
+ goto err_node_put;
} else {
schedule_delayed_work(&info->work, LTC294X_WORK_DELAY * HZ);
}
+ of_node_put(np);
return 0;
+
+err_node_put:
+ of_node_put(np);
+ return ret;
}
static void ltc294x_i2c_shutdown(struct i2c_client *client)
--
2.7.4
