pinctrl: rockchip: fix leaked of_node references

[ 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@zte.com.cn>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: linux-gpio@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index a9bc1e01f9828747b0d74417e1d2fba1f9f6b375..5d6cf024ee9c80ae4580d73c03fc72e117d027fa 100644 (file)
--- 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);