Switch to a more robust approach by means of the cleanup attribute,
which automates the calls to of_node_put() when 'soc' goes out of scope.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
---
 drivers/clk/renesas/renesas-cpg-mssr.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c
index 5dc89b1009fe..bf85501709f0 100644
--- a/drivers/clk/renesas/renesas-cpg-mssr.c
+++ b/drivers/clk/renesas/renesas-cpg-mssr.c
@@ -979,7 +979,7 @@ static void __init cpg_mssr_reserved_exit(struct cpg_mssr_priv *priv)
 static int __init cpg_mssr_reserved_init(struct cpg_mssr_priv *priv,
 					 const struct cpg_mssr_info *info)
 {
-	struct device_node *soc = of_find_node_by_path("/soc");
+	struct device_node *soc __free(device_node) = of_find_node_by_path("/soc");
 	struct device_node *node;
 	uint32_t args[MAX_PHANDLE_ARGS];
 	unsigned int *ids = NULL;
@@ -1022,7 +1022,6 @@ static int __init cpg_mssr_reserved_init(struct cpg_mssr_priv *priv,
 
 			ids = krealloc_array(ids, (num + 1), sizeof(*ids), GFP_KERNEL);
 			if (!ids) {
-				of_node_put(soc);
 				of_node_put(it.node);
 				return -ENOMEM;
 			}
@@ -1037,7 +1036,6 @@ static int __init cpg_mssr_reserved_init(struct cpg_mssr_priv *priv,
 			num++;
 		}
 	}
-	of_node_put(soc);
 
 	priv->num_reserved_ids	= num;
 	priv->reserved_ids	= ids;

-- 
2.43.0

On 31/10/2024 00:25, Javier Carrasco wrote:
> Switch to a more robust approach by means of the cleanup attribute,
> which automates the calls to of_node_put() when 'soc' goes out of scope.
> 
> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
> ---
>  drivers/clk/renesas/renesas-cpg-mssr.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c
> index 5dc89b1009fe..bf85501709f0 100644
> --- a/drivers/clk/renesas/renesas-cpg-mssr.c
> +++ b/drivers/clk/renesas/renesas-cpg-mssr.c
> @@ -979,7 +979,7 @@ static void __init cpg_mssr_reserved_exit(struct cpg_mssr_priv *priv)
>  static int __init cpg_mssr_reserved_init(struct cpg_mssr_priv *priv,
>  					 const struct cpg_mssr_info *info)
>  {
> -	struct device_node *soc = of_find_node_by_path("/soc");
> +	struct device_node *soc __free(device_node) = of_find_node_by_path("/soc");
>  	struct device_node *node;
>  	uint32_t args[MAX_PHANDLE_ARGS];
>  	unsigned int *ids = NULL;
> @@ -1022,7 +1022,6 @@ static int __init cpg_mssr_reserved_init(struct cpg_mssr_priv *priv,
>  
>  			ids = krealloc_array(ids, (num + 1), sizeof(*ids), GFP_KERNEL);
>  			if (!ids) {
> -				of_node_put(soc);

You just added this. Don't add code which is immediately removed. It's a
noop or wrong code.

Best regards,
Krzysztof