linux-kernel - [PATCH AUTOSEL 4.14 04/60] pinctrl: rockchip: fix leaked of

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Message-Id: <20190719041109.18262-4-sashal@kernel.org>
Date:   Fri, 19 Jul 2019 00:10:13 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Wen Yang <wen.yang99@....com.cn>,
        Linus Walleij <linus.walleij@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>, linux-gpio@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.14 04/60] pinctrl: rockchip: fix leaked of_node references

From: Wen Yang <wen.yang99@....com.cn>

[ Upstream commit 3c89c70634bb0b6f48512de873e7a45c7e1fbaa5 ]

The call to of_parse_phandle returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./drivers/pinctrl/pinctrl-rockchip.c:3221:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 3196, but without a corresponding object release within this function.
./drivers/pinctrl/pinctrl-rockchip.c:3223:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 3196, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@....com.cn>
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Heiko Stuebner <heiko@...ech.de>
Cc: linux-gpio@...r.kernel.org
Cc: linux-rockchip@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pinctrl/pinctrl-rockchip.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index a9bc1e01f982..5d6cf024ee9c 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -2941,6 +2941,7 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank,
 						    base,
 						    &rockchip_regmap_config);
 		}
+		of_node_put(node);
 	}
 
 	bank->irq = irq_of_parse_and_map(bank->of_node, 0);
-- 
2.20.1