linux-kernel - [PATCH AUTOSEL 5.18 41/53] mips: ralink: Fix refcount leak in of.c

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Message-Id: <20220628021839.594423-41-sashal@kernel.org>
Date:   Mon, 27 Jun 2022 22:18:27 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Liang He <windhl@....com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Sasha Levin <sashal@...nel.org>, john@...ozen.org,
        linux-mips@...r.kernel.org
Subject: [PATCH AUTOSEL 5.18 41/53] mips: ralink: Fix refcount leak in of.c

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

[ Upstream commit 48ca54e39173d1ed4c4dc8cf045484014bb26eaf ]

In plat_of_remap_node(), plat_of_remap_node() will return a node
pointer with refcount incremented. We should use of_node_put()
when it is not used anymore.

Signed-off-by: Liang He <windhl@....com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/mips/ralink/of.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/ralink/of.c b/arch/mips/ralink/of.c
index 587c7b998769..ea8072acf8d9 100644
--- a/arch/mips/ralink/of.c
+++ b/arch/mips/ralink/of.c
@@ -40,6 +40,8 @@ __iomem void *plat_of_remap_node(const char *node)
 	if (of_address_to_resource(np, 0, &res))
 		panic("Failed to get resource for %s", node);
 
+	of_node_put(np);
+
 	if (!request_mem_region(res.start,
 				resource_size(&res),
 				res.name))
-- 
2.35.1