Re: [PATCH] leds: lp50xx: use scoped loop to fix fwnode reference leak in lp50xx_probe_dt()

[Lee Jones <lee@kernel.org>]

On Thu, 01 Oct 2026, Manush Prajwal wrote:

> In lp50xx_probe_dt(), fwnode_for_each_child_node(child, led_node) iterates
> over each sub-LED child node. If fwnode_property_read_u32() for "reg" fails
> or if multi_index >= LP50XX_LEDS_PER_MODULE, the function returns -EINVAL
> without dropping the reference count of led_node, leaking the fwnode.
> 
> Use fwnode_for_each_child_node_scoped() to automatically release led_node
> on all exit paths, eliminating the refcount leak as well as the manual
> fwnode_handle_put(led_node) on the "color" property failure path, and
> remove the now unnecessary function-scope led_node variable declaration.
> 
> Fixes: 193910c2c54e ("leds: lp50xx: Add the LP50XX family of the RGB LED driver")

This doesn't appear to be a real commit.

> Signed-off-by: Manush Prajwal <manushprajwal555@gmail.com>
> ---
>  drivers/leds/leds-lp50xx.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/leds/leds-lp50xx.c b/drivers/leds/leds-lp50xx.c
> index 20bfb315b..d542eedd4 100644
> --- a/drivers/leds/leds-lp50xx.c
> +++ b/drivers/leds/leds-lp50xx.c
> @@ -458,7 +458,6 @@ static int lp50xx_probe_leds(struct fwnode_handle *child, struct lp50xx *priv,
>  
>  static int lp50xx_probe_dt(struct lp50xx *priv)
>  {
> -	struct fwnode_handle *led_node = NULL;
>  	struct led_init_data init_data = {};
>  	struct led_classdev *led_cdev;
>  	struct mc_subled *mc_led_info;
> @@ -505,12 +504,11 @@ static int lp50xx_probe_dt(struct lp50xx *priv)
>  		if (!mc_led_info)
>  			return -ENOMEM;
>  
> -		fwnode_for_each_child_node(child, led_node) {
> +		fwnode_for_each_child_node_scoped(child, led_node) {
>  			int multi_index;
>  			ret = fwnode_property_read_u32(led_node, "color",
>  						       &color_id);
>  			if (ret) {
> -				fwnode_handle_put(led_node);
>  				dev_err(priv->dev, "Cannot read color\n");
>  				return ret;
>  			}
> -- 
> 2.46.2.windows.1
> 
> 
> 

-- 
Lee Jones