linux-kernel - [PATCH 3/6] irqchip/apple-aic: Fix refcount leak in aic_of_ic

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Date:   Wed,  1 Jun 2022 12:09:27 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Birger Koblitz <mail@...ger-koblitz.de>,
        John Crispin <john@...ozen.org>,
        Bert Vermeulen <bert@...t.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Miaoqian Lin <linmq006@...il.com>
Subject: [PATCH 3/6] irqchip/apple-aic: Fix refcount leak in aic_of_ic_init

of_get_child_by_name() 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: a5e8801202b3 ("irqchip/apple-aic: Parse FIQ affinities from device-tree")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/irqchip/irq-apple-aic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c
index 478d0af16d9f..5ac83185ff47 100644
--- a/drivers/irqchip/irq-apple-aic.c
+++ b/drivers/irqchip/irq-apple-aic.c
@@ -1144,6 +1144,7 @@ static int __init aic_of_ic_init(struct device_node *node, struct device_node *p
 		for_each_child_of_node(affs, chld)
 			build_fiq_affinity(irqc, chld);
 	}
+	of_node_put(affs);
 
 	set_handle_irq(aic_handle_irq);
 	set_handle_fiq(aic_handle_fiq);
-- 
2.25.1