Re: [PATCH] thermal/of: Fix reference leak in thermal_of_cm_lookup()

[Rafael J. Wysocki]

On Fri, Jan 23, 2026 at 8:06 PM Felix Gu <ustc.gu@xxxxxxxxx> wrote:
>
> In thermal_of_cm_lookup(), tr_np is obtained via of_parse_phandle(). But
> it never be released.
> Use the __free(device_node) cleanup attribute to automatically release
> the node and fix the leak.
>
> Fixes: 423de5b5bc5b ("thermal/of: Fix cdev lookup in thermal_of_should_bind()")
>
> Signed-off-by: Felix Gu <ustc.gu@xxxxxxxxx>
> ---
>  drivers/thermal/thermal_of.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
> index 1a51a4d240ff..b6d0c92f5522 100644
> --- a/drivers/thermal/thermal_of.c
> +++ b/drivers/thermal/thermal_of.c
> @@ -280,10 +280,10 @@ static bool thermal_of_cm_lookup(struct device_node *cm_np,
>                                  struct cooling_spec *c)
>  {
>         for_each_child_of_node_scoped(cm_np, child) {
> -               struct device_node *tr_np;
>                 int count, i;
>
> -               tr_np = of_parse_phandle(child, "trip", 0);
> +               struct device_node *tr_np __free(device_node) =
> +                       of_parse_phandle(child, "trip", 0);
>                 if (tr_np != trip->priv)
>                         continue;
>
>
> ---

This looks good to me.

Lukasz, Daniel?