linux-kernel - [PATCH v1 18/28] leds: lm3692x: Put fwnode in any case during ->probe()

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Date:   Mon, 10 May 2021 12:50:35 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Pavel Machek <pavel@....cz>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Amireddy Mallikarjuna reddy 
        <mallikarjunax.reddy@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Marek Behún <marek.behun@....cz>,
        Abanoub Sameh <abanoubsameh8@...il.com>,
        Dan Murphy <dmurphy@...com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>
Subject: [PATCH v1 18/28] leds: lm3692x: Put fwnode in any case during ->probe()

device_get_next_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.

Fixes: 9a5c1c64ac0a ("leds: lm3692x: Change DT calls to fwnode calls")
Cc: Dan Murphy <dmurphy@...com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
---
 drivers/leds/leds-lm3692x.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
index e945de45388c..55e6443997ec 100644
--- a/drivers/leds/leds-lm3692x.c
+++ b/drivers/leds/leds-lm3692x.c
@@ -435,6 +435,7 @@ static int lm3692x_probe_dt(struct lm3692x_led *led)
 
 	ret = fwnode_property_read_u32(child, "reg", &led->led_enable);
 	if (ret) {
+		fwnode_handle_put(child);
 		dev_err(&led->client->dev, "reg DT property missing\n");
 		return ret;
 	}
@@ -449,12 +450,11 @@ static int lm3692x_probe_dt(struct lm3692x_led *led)
 
 	ret = devm_led_classdev_register_ext(&led->client->dev, &led->led_dev,
 					     &init_data);
-	if (ret) {
+	if (ret)
 		dev_err(&led->client->dev, "led register err: %d\n", ret);
-		return ret;
-	}
 
-	return 0;
+	fwnode_handle_put(init_data.fwnode);
+	return ret;
 }
 
 static int lm3692x_probe(struct i2c_client *client,
-- 
2.31.1