linux-kernel - [PATCH 4.19 054/287] meson-mx-socinfo: Fix refcount leak in meson_mx_socinfo

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Date:   Tue, 23 Aug 2022 10:23:43 +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, Miaoqian Lin <linmq006@...il.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 054/287] meson-mx-socinfo: Fix refcount leak in meson_mx_socinfo_init

From: Miaoqian Lin <linmq006@...il.com>

[ Upstream commit a2106f38077e78afcb4bf98fdda3e162118cfb3d ]

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: 5e68c0fc8df8 ("soc: amlogic: Add Meson6/Meson8/Meson8b/Meson8m2 SoC Information driver")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
Link: https://lore.kernel.org/r/20220524065729.33689-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/soc/amlogic/meson-mx-socinfo.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/soc/amlogic/meson-mx-socinfo.c b/drivers/soc/amlogic/meson-mx-socinfo.c
index 78f0f1aeca57..92125dd65f33 100644
--- a/drivers/soc/amlogic/meson-mx-socinfo.c
+++ b/drivers/soc/amlogic/meson-mx-socinfo.c
@@ -126,6 +126,7 @@ static int __init meson_mx_socinfo_init(void)
 	np = of_find_matching_node(NULL, meson_mx_socinfo_analog_top_ids);
 	if (np) {
 		analog_top_regmap = syscon_node_to_regmap(np);
+		of_node_put(np);
 		if (IS_ERR(analog_top_regmap))
 			return PTR_ERR(analog_top_regmap);
 
-- 
2.35.1