linux-kernel - [PATCH -next] ARM: versatile: Add missing of_node_put in dcscb

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Message-ID: <20220425081416.22836-1-wupeng58@huawei.com>
Date:   Mon, 25 Apr 2022 08:14:16 +0000
From:   Peng Wu <wupeng58@...wei.com>
To:     <linus.walleij@...aro.org>, <linux@...linux.org.uk>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <liwei391@...wei.com>,
        <wangxiongfeng2@...wei.com>, Peng Wu <wupeng58@...wei.com>
Subject: [PATCH -next] ARM: versatile: Add missing of_node_put in dcscb_init

The device_node pointer is returned by of_find_compatible_node
with refcount incremented. We should use of_node_put() to avoid
the refcount leak.

Signed-off-by: Peng Wu <wupeng58@...wei.com>
---
 arch/arm/mach-versatile/dcscb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-versatile/dcscb.c b/arch/arm/mach-versatile/dcscb.c
index 866270e7f271..d8797350996d 100644
--- a/arch/arm/mach-versatile/dcscb.c
+++ b/arch/arm/mach-versatile/dcscb.c
@@ -144,6 +144,7 @@ static int __init dcscb_init(void)
 	if (!node)
 		return -ENODEV;
 	dcscb_base = of_iomap(node, 0);
+	of_node_put(node);
 	if (!dcscb_base)
 		return -EADDRNOTAVAIL;
 	cfg = readl_relaxed(dcscb_base + DCS_CFG_R);
-- 
2.17.1