linux-kernel - [PATCH 5.15 41/98] net/dsa/hirschmann: Add missing of_node_get() in hellcreek_led

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Message-Id: <20220705115618.755108434@linuxfoundation.org>
Date:   Tue,  5 Jul 2022 13:57:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Liang He <windhl@....com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.15 41/98] net/dsa/hirschmann: Add missing of_node_get() in hellcreek_led_setup()

From: Liang He <windhl@....com>

commit 16d584d2fc8f4ea36203af45a76becd7093586f1 upstream.

of_find_node_by_name() will decrease the refcount of its first arg and
we need a of_node_get() to keep refcount balance.

Fixes: 7d9ee2e8ff15 ("net: dsa: hellcreek: Add PTP status LEDs")
Signed-off-by: Liang He <windhl@....com>
Link: https://lore.kernel.org/r/20220622040621.4094304-1-windhl@126.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/dsa/hirschmann/hellcreek_ptp.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/dsa/hirschmann/hellcreek_ptp.c
+++ b/drivers/net/dsa/hirschmann/hellcreek_ptp.c
@@ -300,6 +300,7 @@ static int hellcreek_led_setup(struct he
 	const char *label, *state;
 	int ret = -EINVAL;
 
+	of_node_get(hellcreek->dev->of_node);
 	leds = of_find_node_by_name(hellcreek->dev->of_node, "leds");
 	if (!leds) {
 		dev_err(hellcreek->dev, "No LEDs specified in device tree!\n");