Re: [PATCH -next] gpio: sim: add missing fwnode_handle_put() in gpio_sim_probe()

[Bartosz Golaszewski <brgl@xxxxxxxx>]

On Tue, Dec 21, 2021 at 12:32 PM Yang Yingliang
<yangyingliang@xxxxxxxxxx> wrote:
>
> Calling fwnode_handle_put() when break out of device_for_each_child_node(),
> or the device node reference will be leakd.
>
> Fixes: 83960fcf4818 ("gpio: sim: new testing module")
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
> ---
>  drivers/gpio/gpio-sim.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c
> index ef6145f51c8a..520ee923b516 100644
> --- a/drivers/gpio/gpio-sim.c
> +++ b/drivers/gpio/gpio-sim.c
> @@ -444,8 +444,10 @@ static int gpio_sim_probe(struct platform_device *pdev)
>
>         device_for_each_child_node(dev, swnode) {
>                 ret = gpio_sim_add_bank(swnode, dev);
> -               if (ret)
> +               if (ret) {
> +                       fwnode_handle_put(swnode);
>                         return ret;
> +               }
>         }
>
>         return 0;
> --
> 2.25.1
>

Applied, thanks!

Bart