linux-kernel - [PATCH] ARM: tegra: Fix refcount leak in tegra114_gic_cpu_pm

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Message-Id: <20220523152037.16078-1-linmq006@gmail.com>
Date:   Mon, 23 May 2022 19:20:36 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Russell King <linux@...linux.org.uk>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Miaoqian Lin <linmq006@...il.com>,
        Joseph Lo <josephl@...dia.com>,
        Stephen Warren <swarren@...dia.com>,
        linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: tegra: Fix refcount leak in tegra114_gic_cpu_pm_registration

of_find_matching_node() 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: 7e8b15dbc392 ("ARM: tegra114: Reprogram GIC CPU interface to bypass IRQ on CPU PM entry")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 arch/arm/mach-tegra/irq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c
index 4e1ee70b2a3f..d51bdd46219e 100644
--- a/arch/arm/mach-tegra/irq.c
+++ b/arch/arm/mach-tegra/irq.c
@@ -73,7 +73,7 @@ static void __init tegra114_gic_cpu_pm_registration(void)
 		return;
 
 	tegra_gic_cpu_base = of_iomap(dn, 1);
-
+	of_node_put(dn);
 	cpu_pm_register_notifier(&tegra_gic_notifier_block);
 }
 #else
-- 
2.25.1