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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Liang He <windhl@126.com>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Sasha Levin <sashal@kernel.org>, ye.guojin@zte.com.cn,
        linux-mips@vger.kernel.org
Subject: [PATCH AUTOSEL 5.15 05/28] mips: cavium-octeon: Fix missing of_node_put() in octeon2_usb_clocks_start
Date:   Sun, 14 Aug 2022 12:25:45 -0400
Message-Id: <20220814162610.2397644-5-sashal@kernel.org>
In-Reply-To: <20220814162610.2397644-1-sashal@kernel.org>
References: <20220814162610.2397644-1-sashal@kernel.org>
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From: Liang He <windhl@126.com>

[ Upstream commit 7a9f743ceead60ed454c46fbc3085ee9a79cbebb ]

We should call of_node_put() for the reference 'uctl_node' returned by
of_get_parent() which will increase the refcount. Otherwise, there will
be a refcount leak bug.

Signed-off-by: Liang He <windhl@126.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/mips/cavium-octeon/octeon-platform.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index a994022e32c9..ce05c0dd3acd 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -86,11 +86,12 @@ static void octeon2_usb_clocks_start(struct device *dev)
 					 "refclk-frequency", &clock_rate);
 		if (i) {
 			dev_err(dev, "No UCTL \"refclk-frequency\"\n");
+			of_node_put(uctl_node);
 			goto exit;
 		}
 		i = of_property_read_string(uctl_node,
 					    "refclk-type", &clock_type);
-
+		of_node_put(uctl_node);
 		if (!i && strcmp("crystal", clock_type) == 0)
 			is_crystal_clock = true;
 	}
-- 
2.35.1