linux-kernel - [PATCH] leds: lp55xx: fix device node iterator memory leaks

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Date:   Sat, 26 Sep 2020 00:59:05 +0200
From:   Tobias Jordan <kernel@...e.de>
To:     linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>
Subject: [PATCH] leds: lp55xx: fix device node iterator memory leaks

Fix error paths in for_each_child_of_node loops that were missing an
of_node_put call.

Fixes: 92a81562e695 ("leds: lp55xx: Add multicolor framework support to
lp55xx")
Signed-off-by: Tobias Jordan <kernel@...e.de>
---
 drivers/leds/leds-lp55xx-common.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 56210f4ad919..f8b55cfd21ef 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_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_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++;
 	}
 
-- 
2.20.1