linux-kernel - [PATCH] irqchip/gic/realview: Fix refcount leak in realview_gic_of

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Message-Id: <20220526074348.23972-1-linmq006@gmail.com>
Date:   Thu, 26 May 2022 11:43:48 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] irqchip/gic/realview: Fix refcount leak in realview_gic_of_init

of_find_matching_node_and_match() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: 82b0a434b436 ("irqchip/gic/realview: Support more RealView DCC variants")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/irqchip/irq-gic-realview.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-gic-realview.c b/drivers/irqchip/irq-gic-realview.c
index b4c1924f0255..38fab02ffe9d 100644
--- a/drivers/irqchip/irq-gic-realview.c
+++ b/drivers/irqchip/irq-gic-realview.c
@@ -57,6 +57,7 @@ realview_gic_of_init(struct device_node *node, struct device_node *parent)
 
 	/* The PB11MPCore GIC needs to be configured in the syscon */
 	map = syscon_node_to_regmap(np);
+	of_node_put(np);
 	if (!IS_ERR(map)) {
 		/* new irq mode with no DCC */
 		regmap_write(map, REALVIEW_SYS_LOCK_OFFSET,
-- 
2.25.1