linux-kernel - Re: [PATCH v2 7/7] Input: axp20x-pek - switch to using devm_device_add

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Date:   Wed, 19 Jul 2017 20:21:39 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     htejun@...il.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 7/7] Input: axp20x-pek - switch to using
 devm_device_add_group()

On 07/19/2017 05:24 PM, Dmitry Torokhov wrote:
> Now that we have proper managed API to create device attributes, let's
> use it instead of installing a custom devm action.
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>   drivers/input/misc/axp20x-pek.c | 18 +-----------------
>   1 file changed, 1 insertion(+), 17 deletions(-)
> 
> diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c
> index 38c79ebff033..cfeb0e943de6 100644
> --- a/drivers/input/misc/axp20x-pek.c
> +++ b/drivers/input/misc/axp20x-pek.c
> @@ -182,13 +182,6 @@ static irqreturn_t axp20x_pek_irq(int irq, void *pwr)
>   	return IRQ_HANDLED;
>   }
>   
> -static void axp20x_remove_sysfs_group(void *_data)
> -{
> -	struct device *dev = _data;
> -
> -	sysfs_remove_group(&dev->kobj, &axp20x_attribute_group);
> -}
> -
>   static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek,
>   					 struct platform_device *pdev)
>   {
> @@ -313,22 +306,13 @@ static int axp20x_pek_probe(struct platform_device *pdev)
>   			return error;
>   	}
>   
> -	error = sysfs_create_group(&pdev->dev.kobj, &axp20x_attribute_group);
> +	error = devm_device_add_group(&pdev->dev, &axp20x_attribute_group);
>   	if (error) {
>   		dev_err(&pdev->dev, "Failed to create sysfs attributes: %d\n",
>   			error);
>   		return error;
>   	}
>   
> -	error = devm_add_action(&pdev->dev,
> -				axp20x_remove_sysfs_group, &pdev->dev);
> -	if (error) {
> -		axp20x_remove_sysfs_group(&pdev->dev);
> -		dev_err(&pdev->dev, "Failed to add sysfs cleanup action: %d\n",
> -			error);
> -		return error;
> -	}
> -
>   	platform_set_drvdata(pdev, axp20x_pek);
>   
>   	return 0;
>