From f2b41b748c19962b82709d9f23c6b2b0ce9d2f91 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()
Git-commit: f2b41b748c19962b82709d9f23c6b2b0ce9d2f91
Patch-mainline: v6.2-rc1
References: git-fixes

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>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/regulator/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 704f91720dfe..3f6c6185c187 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1943,6 +1943,7 @@ 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;
 
-- 
2.35.3