linux-kernel - [PATCH 5.4 154/340] regulator: s5m8767: Fix reference count leak

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Message-Id: <20210301161055.894725301@linuxfoundation.org>
Date:   Mon,  1 Mar 2021 17:11:38 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Pan Bian <bianpan2016@....com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 154/340] regulator: s5m8767: Fix reference count leak

From: Pan Bian <bianpan2016@....com>

[ Upstream commit dea6dd2ba63f8c8532addb8f32daf7b89a368a42 ]

Call of_node_put() to drop references of regulators_np and reg_np before
returning error code.

Fixes: 9ae5cc75ceaa ("regulator: s5m8767: Pass descriptor instead of GPIO number")
Signed-off-by: Pan Bian <bianpan2016@....com>
Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
Link: https://lore.kernel.org/r/20210121032756.49501-1-bianpan2016@163.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/regulator/s5m8767.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
index 6ca27e9d5ef7d..ee0ed538e244f 100644
--- a/drivers/regulator/s5m8767.c
+++ b/drivers/regulator/s5m8767.c
@@ -574,10 +574,13 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
 			0,
 			GPIOD_OUT_HIGH | GPIOD_FLAGS_BIT_NONEXCLUSIVE,
 			"s5m8767");
-		if (PTR_ERR(rdata->ext_control_gpiod) == -ENOENT)
+		if (PTR_ERR(rdata->ext_control_gpiod) == -ENOENT) {
 			rdata->ext_control_gpiod = NULL;
-		else if (IS_ERR(rdata->ext_control_gpiod))
+		} else if (IS_ERR(rdata->ext_control_gpiod)) {
+			of_node_put(reg_np);
+			of_node_put(regulators_np);
 			return PTR_ERR(rdata->ext_control_gpiod);
+		}
 
 		rdata->id = i;
 		rdata->initdata = of_get_regulator_init_data(
-- 
2.27.0