linux-kernel - [PATCH 5.15 248/530] memory: of: Fix refcount leak bug in of_lpddr3_get_ddr

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Message-Id: <20221024113056.340926529@linuxfoundation.org>
Date:   Mon, 24 Oct 2022 13:29:52 +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, Liang He <windhl@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 248/530] memory: of: Fix refcount leak bug in of_lpddr3_get_ddr_timings()

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

[ Upstream commit 48af14fb0eaa63d9aa68f59fb0b205ec55a95636 ]

We should add the of_node_put() when breaking out of
for_each_child_of_node() as it will automatically increase
and decrease the refcount.

Fixes: 976897dd96db ("memory: Extend of_memory with LPDDR3 support")
Signed-off-by: Liang He <windhl@....com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Link: https://lore.kernel.org/r/20220719085640.1210583-2-windhl@126.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/memory/of_memory.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/memory/of_memory.c b/drivers/memory/of_memory.c
index d0a80aefdea8..1791614f324b 100644
--- a/drivers/memory/of_memory.c
+++ b/drivers/memory/of_memory.c
@@ -283,6 +283,7 @@ const struct lpddr3_timings
 		if (of_device_is_compatible(np_tim, tim_compat)) {
 			if (of_lpddr3_do_get_timings(np_tim, &timings[i])) {
 				devm_kfree(dev, timings);
+				of_node_put(np_tim);
 				goto default_timings;
 			}
 			i++;
-- 
2.35.1