Re: [PATCH v2 1/2] media: rcar-csi2: Cleanup mutex on remove and fail

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On 15/09/2021 02:50, Niklas Söderlund wrote:
> The mutex was not destroyed on remove or failed probe, fix this.
> 
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> Reviewed-by: Jacopo Mondi <jacopo@xxxxxxxxxx>

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>

> ---
>  drivers/media/platform/rcar-vin/rcar-csi2.c | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c
> index e28eff0396888f2d..a02573dbd5da4f62 100644
> --- a/drivers/media/platform/rcar-vin/rcar-csi2.c
> +++ b/drivers/media/platform/rcar-vin/rcar-csi2.c
> @@ -1245,14 +1245,14 @@ static int rcsi2_probe(struct platform_device *pdev)
>  	ret = rcsi2_probe_resources(priv, pdev);
>  	if (ret) {
>  		dev_err(priv->dev, "Failed to get resources\n");
> -		return ret;
> +		goto error_mutex;
>  	}
>  
>  	platform_set_drvdata(pdev, priv);
>  
>  	ret = rcsi2_parse_dt(priv);
>  	if (ret)
> -		return ret;
> +		goto error_mutex;
>  
>  	priv->subdev.owner = THIS_MODULE;
>  	priv->subdev.dev = &pdev->dev;
> @@ -1272,21 +1272,23 @@ static int rcsi2_probe(struct platform_device *pdev)
>  	ret = media_entity_pads_init(&priv->subdev.entity, NR_OF_RCAR_CSI2_PAD,
>  				     priv->pads);
>  	if (ret)
> -		goto error;
> +		goto error_async;
>  
>  	pm_runtime_enable(&pdev->dev);
>  
>  	ret = v4l2_async_register_subdev(&priv->subdev);
>  	if (ret < 0)
> -		goto error;
> +		goto error_async;
>  
>  	dev_info(priv->dev, "%d lanes found\n", priv->lanes);
>  
>  	return 0;
>  
> -error:
> +error_async:
>  	v4l2_async_notifier_unregister(&priv->notifier);
>  	v4l2_async_notifier_cleanup(&priv->notifier);
> +error_mutex:
> +	mutex_destroy(&priv->lock);
>  
>  	return ret;
>  }
> @@ -1301,6 +1303,8 @@ static int rcsi2_remove(struct platform_device *pdev)
>  
>  	pm_runtime_disable(&pdev->dev);
>  
> +	mutex_destroy(&priv->lock);
> +
>  	return 0;
>  }
>  
> 




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