From d39937f8de641c44a337cec4a2e5d3e8add20a7d Mon Sep 17 00:00:00 2001
From: Yang Yingliang <yangyingliang@huawei.com>
Date: Tue, 15 Nov 2022 17:15:08 +0800
Subject: [PATCH] regulator: core: fix unbalanced of node refcount in
regulator_dev_lookup()
[ Upstream commit f2b41b748c19962b82709d9f23c6b2b0ce9d2f91 ]
I got the the following report:
OF: ERROR: memory leak, expected refcount 1 instead of 2,
of_node_get()/of_node_put() unbalanced - destroy cset entry:
attach overlay node /i2c/pmic@62/regulators/exten
In of_get_regulator(), the node is returned from of_parse_phandle()
with refcount incremented, after using it, of_node_put() need be called.
Fixes: 69511a452e6d ("regulator: map consumer regulator based on device tree")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221115091508.900752-1-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/regulator/core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 7d15312d6792..ee71dcb009bf 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1734,6 +1734,7 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev,
node = of_get_regulator(dev, supply);
if (node) {
r = of_find_regulator_by_node(node);
+ of_node_put(node);
if (r)
return r;