| Message ID | 1555309442-16039-1-git-send-email-wen.yang99@zte.com.cn |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] pinctrl: rockchip: fix leaked of_node references | expand |
On Mon, Apr 15, 2019 at 8:23 AM Wen Yang <wen.yang99@zte.com.cn> wrote: > 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 Patch applied. Yours, Linus Walleij
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index 16bf21b..6436336 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -3212,6 +3212,7 @@ 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);
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 --- v2: - put of_node_put below the whole if clause. - In the if clause, since node is NULL, there is no need to call of_node_put before return. drivers/pinctrl/pinctrl-rockchip.c | 1 + 1 file changed, 1 insertion(+)