linux-kernel - [PATCH AUTOSEL 4.9 1/6] ARM: rockchip: Add missing of_node_put() in rockchip_suspend

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Message-Id: <20220720011858.1025523-1-sashal@kernel.org>
Date:   Tue, 19 Jul 2022 21:18:52 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Liang He <windhl@....com>, Heiko Stuebner <heiko@...ech.de>,
        Sasha Levin <sashal@...nel.org>, linux@...linux.org.uk,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.9 1/6] ARM: rockchip: Add missing of_node_put() in rockchip_suspend_init()

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

[ Upstream commit f4470dbfb5ff92804650bc71d115c3f150d430f6 ]

In rockchip_suspend_init(), of_find_matching_node_and_match() will
return a node pointer with refcount incremented. We should use
of_node_put() in fail path or when it is not used anymore.

Signed-off-by: Liang He <windhl@....com>
Link: https://lore.kernel.org/r/20220616021713.3973472-1-windhl@126.com
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm/mach-rockchip/pm.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-rockchip/pm.c b/arch/arm/mach-rockchip/pm.c
index bee8c8051929..199c1681e8cd 100644
--- a/arch/arm/mach-rockchip/pm.c
+++ b/arch/arm/mach-rockchip/pm.c
@@ -318,7 +318,7 @@ void __init rockchip_suspend_init(void)
 					     &match);
 	if (!match) {
 		pr_err("Failed to find PMU node\n");
-		return;
+		goto out_put;
 	}
 	pm_data = (struct rockchip_pm_data *) match->data;
 
@@ -327,9 +327,12 @@ void __init rockchip_suspend_init(void)
 
 		if (ret) {
 			pr_err("%s: matches init error %d\n", __func__, ret);
-			return;
+			goto out_put;
 		}
 	}
 
 	suspend_set_ops(pm_data->ops);
+
+out_put:
+	of_node_put(np);
 }
-- 
2.35.1