[PATCH AUTOSEL 4.9 04/45] pinctrl: rockchip: fix leaked of_node references

From: Sasha Levin
Date: Fri Jul 19 2019 - 00:19:21 EST


From: Wen Yang <wen.yang99@xxxxxxxxxx>

[ 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@xxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Heiko Stuebner <heiko@xxxxxxxxx>
Cc: linux-gpio@xxxxxxxxxxxxxxx
Cc: linux-rockchip@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 f826793e972c..417cd3bd7e0c 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -2208,6 +2208,7 @@ 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