diff mbox series

[1/2] thermal: imx_sc: add missing of_node_put for loop iteration

Message ID 20210425174831.164332-1-krzysztof.kozlowski@canonical.com (mailing list archive)
State New
Delegated to: Daniel Lezcano
Headers show
Series [1/2] thermal: imx_sc: add missing of_node_put for loop iteration | expand

Commit Message

Krzysztof Kozlowski April 25, 2021, 5:48 p.m. UTC
Early exits from for_each_available_child_of_node() should decrement the
node reference counter.  Reported by Coccinelle:

  drivers/thermal/imx_sc_thermal.c:93:1-33: WARNING:
    Function "for_each_available_child_of_node" should have of_node_put() before return around line 97.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 drivers/thermal/imx_sc_thermal.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Jacky Bai April 27, 2021, 8:55 a.m. UTC | #1
> Subject: [PATCH 1/2] thermal: imx_sc: add missing of_node_put for loop
> iteration
> 
> Early exits from for_each_available_child_of_node() should decrement the
> node reference counter.  Reported by Coccinelle:
> 
>   drivers/thermal/imx_sc_thermal.c:93:1-33: WARNING:
>     Function "for_each_available_child_of_node" should have of_node_put()
> before return around line 97.
> 

Reviewed-by: Jacky Bai <ping.bai@nxp.com>

BR
Jacky Bai

> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> ---
>  drivers/thermal/imx_sc_thermal.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/thermal/imx_sc_thermal.c
> b/drivers/thermal/imx_sc_thermal.c
> index b01d28eca7ee..8d76dbfde6a9 100644
> --- a/drivers/thermal/imx_sc_thermal.c
> +++ b/drivers/thermal/imx_sc_thermal.c
> @@ -93,6 +93,7 @@ static int imx_sc_thermal_probe(struct platform_device
> *pdev)
>  	for_each_available_child_of_node(np, child) {
>  		sensor = devm_kzalloc(&pdev->dev, sizeof(*sensor), GFP_KERNEL);
>  		if (!sensor) {
> +			of_node_put(child);
>  			of_node_put(sensor_np);
>  			return -ENOMEM;
>  		}
> @@ -104,6 +105,7 @@ static int imx_sc_thermal_probe(struct
> platform_device *pdev)
>  			dev_err(&pdev->dev,
>  				"failed to get valid sensor resource id: %d\n",
>  				ret);
> +			of_node_put(child);
>  			break;
>  		}
> 
> @@ -114,6 +116,7 @@ static int imx_sc_thermal_probe(struct
> platform_device *pdev)
>  		if (IS_ERR(sensor->tzd)) {
>  			dev_err(&pdev->dev, "failed to register thermal zone\n");
>  			ret = PTR_ERR(sensor->tzd);
> +			of_node_put(child);
>  			break;
>  		}
> 
> --
> 2.25.1
diff mbox series

Patch

diff --git a/drivers/thermal/imx_sc_thermal.c b/drivers/thermal/imx_sc_thermal.c
index b01d28eca7ee..8d76dbfde6a9 100644
--- a/drivers/thermal/imx_sc_thermal.c
+++ b/drivers/thermal/imx_sc_thermal.c
@@ -93,6 +93,7 @@  static int imx_sc_thermal_probe(struct platform_device *pdev)
 	for_each_available_child_of_node(np, child) {
 		sensor = devm_kzalloc(&pdev->dev, sizeof(*sensor), GFP_KERNEL);
 		if (!sensor) {
+			of_node_put(child);
 			of_node_put(sensor_np);
 			return -ENOMEM;
 		}
@@ -104,6 +105,7 @@  static int imx_sc_thermal_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev,
 				"failed to get valid sensor resource id: %d\n",
 				ret);
+			of_node_put(child);
 			break;
 		}
 
@@ -114,6 +116,7 @@  static int imx_sc_thermal_probe(struct platform_device *pdev)
 		if (IS_ERR(sensor->tzd)) {
 			dev_err(&pdev->dev, "failed to register thermal zone\n");
 			ret = PTR_ERR(sensor->tzd);
+			of_node_put(child);
 			break;
 		}