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From:   =?UTF-8?q?Marek=20Beh=C3=BAn?= <marek.behun@nic.cz>
To:     linux-leds@vger.kernel.org
Cc:     Pavel Machek <pavel@ucw.cz>, Dan Murphy <dmurphy@ti.com>,
        =?UTF-8?q?Ond=C5=99ej=20Jirman?= <megous@megous.com>,
        linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
        devicetree@vger.kernel.org,
        =?UTF-8?q?Marek=20Beh=C3=BAn?= <marek.behun@nic.cz>,
        Nikita Travkin <nikitos.tr@gmail.com>,
        Milo Kim <milo.kim@ti.com>
Subject: [PATCH leds v2 09/50] leds: various: fix OF node leaks
Date:   Fri, 18 Sep 2020 00:32:57 +0200
Message-Id: <20200917223338.14164-10-marek.behun@nic.cz>
In-Reply-To: <20200917223338.14164-1-marek.behun@nic.cz>
References: <20200917223338.14164-1-marek.behun@nic.cz>
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Fix OF node leaks by calling of_node_put in
for_each_available_child_of_node when the cycle breaks or returns.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Nikita Travkin <nikitos.tr@gmail.com>
Cc: Milo Kim <milo.kim@ti.com>
Cc: Dan Murphy <dmurphy@ti.com>
---
 drivers/leds/leds-aw2013.c        | 4 +++-
 drivers/leds/leds-lp55xx-common.c | 8 ++++++--
 drivers/leds/leds-turris-omnia.c  | 4 +++-
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/leds-aw2013.c b/drivers/leds/leds-aw2013.c
index 9df7de042bca2..927c5ba32592f 100644
--- a/drivers/leds/leds-aw2013.c
+++ b/drivers/leds/leds-aw2013.c
@@ -305,8 +305,10 @@ static int aw2013_probe_dt(struct aw2013 *chip)
 
 		ret = devm_led_classdev_register_ext(&chip->client->dev,
 						     &led->cdev, &init_data);
-		if (ret < 0)
+		if (ret < 0) {
+			of_node_put(child);
 			return ret;
+		}
 
 		i++;
 	}
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 50f7f5b874636..81de1346bf5d6 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -614,8 +614,10 @@ static int lp55xx_parse_multi_led(struct device_node *np,
 	for_each_available_child_of_node(np, child) {
 		ret = lp55xx_parse_multi_led_child(child, cfg, child_number,
 						   num_colors);
-		if (ret)
+		if (ret) {
+			of_node_put(child);
 			return ret;
+		}
 		num_colors++;
 	}
 
@@ -681,8 +683,10 @@ struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev,
 
 	for_each_available_child_of_node(np, child) {
 		ret = lp55xx_parse_logical_led(child, cfg, i);
-		if (ret)
+		if (ret) {
+			of_node_put(child);
 			return ERR_PTR(-EINVAL);
+		}
 		i++;
 	}
 
diff --git a/drivers/leds/leds-turris-omnia.c b/drivers/leds/leds-turris-omnia.c
index b2add494af14d..c276969137d7f 100644
--- a/drivers/leds/leds-turris-omnia.c
+++ b/drivers/leds/leds-turris-omnia.c
@@ -236,8 +236,10 @@ static int omnia_leds_probe(struct i2c_client *client,
 	led = &leds->leds[0];
 	for_each_available_child_of_node(np, child) {
 		ret = omnia_led_register(client, led, child);
-		if (ret < 0)
+		if (ret < 0) {
+			of_node_put(child);
 			return ret;
+		}
 
 		led += ret;
 	}
-- 
2.26.2