linux-kernel - Re: [PATCH v2 2/5] input: misc: bma150: Use managed resources helpers

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Date:   Wed, 6 Feb 2019 10:52:55 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
Cc:     robh+dt@...nel.org, mark.rutland@....com, xc-racer2@...e.ca,
        devicetree@...r.kernel.org, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/5] input: misc: bma150: Use managed resources helpers

On Sat, Feb 02, 2019 at 04:18:03PM +0100, Paweł Chmiel wrote:
> From: Jonathan Bakker <xc-racer2@...e.ca>
> 
> The driver can be cleaned up by using managed resource helpers
> 
> Changes from v1:
>  - Correct devm input unregistering
> 
> Signed-off-by: Jonathan Bakker <xc-racer2@...e.ca>
> Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>

Applied, thank you.

> ---
>  drivers/input/misc/bma150.c | 44 ++++++++++---------------------------
>  1 file changed, 12 insertions(+), 32 deletions(-)
> 
> diff --git a/drivers/input/misc/bma150.c b/drivers/input/misc/bma150.c
> index 1efcfdf9f8a8..79acaaf86b7e 100644
> --- a/drivers/input/misc/bma150.c
> +++ b/drivers/input/misc/bma150.c
> @@ -471,7 +471,7 @@ static int bma150_register_input_device(struct bma150_data *bma150)
>  	struct input_dev *idev;
>  	int error;
>  
> -	idev = input_allocate_device();
> +	idev = devm_input_allocate_device(&bma150->client->dev);
>  	if (!idev)
>  		return -ENOMEM;
>  
> @@ -482,10 +482,8 @@ static int bma150_register_input_device(struct bma150_data *bma150)
>  	input_set_drvdata(idev, bma150);
>  
>  	error = input_register_device(idev);
> -	if (error) {
> -		input_free_device(idev);
> +	if (error)
>  		return error;
> -	}
>  
>  	bma150->input = idev;
>  	return 0;
> @@ -496,7 +494,7 @@ static int bma150_register_polled_device(struct bma150_data *bma150)
>  	struct input_polled_dev *ipoll_dev;
>  	int error;
>  
> -	ipoll_dev = input_allocate_polled_device();
> +	ipoll_dev = devm_input_allocate_polled_device(&bma150->client->dev);
>  	if (!ipoll_dev)
>  		return -ENOMEM;
>  
> @@ -511,10 +509,8 @@ static int bma150_register_polled_device(struct bma150_data *bma150)
>  	bma150_init_input_device(bma150, ipoll_dev->input);
>  
>  	error = input_register_polled_device(ipoll_dev);
> -	if (error) {
> -		input_free_polled_device(ipoll_dev);
> +	if (error)
>  		return error;
> -	}
>  
>  	bma150->input_polled = ipoll_dev;
>  	bma150->input = ipoll_dev->input;
> @@ -543,7 +539,8 @@ static int bma150_probe(struct i2c_client *client,
>  		return -EINVAL;
>  	}
>  
> -	bma150 = kzalloc(sizeof(struct bma150_data), GFP_KERNEL);
> +	bma150 = devm_kzalloc(&client->dev, sizeof(struct bma150_data),
> +			      GFP_KERNEL);
>  	if (!bma150)
>  		return -ENOMEM;
>  
> @@ -556,7 +553,7 @@ static int bma150_probe(struct i2c_client *client,
>  				dev_err(&client->dev,
>  					"IRQ GPIO conf. error %d, error %d\n",
>  					client->irq, error);
> -				goto err_free_mem;
> +				return error;
>  			}
>  		}
>  		cfg = &pdata->cfg;
> @@ -566,14 +563,14 @@ static int bma150_probe(struct i2c_client *client,
>  
>  	error = bma150_initialize(bma150, cfg);
>  	if (error)
> -		goto err_free_mem;
> +		return error;
>  
>  	if (client->irq > 0) {
>  		error = bma150_register_input_device(bma150);
>  		if (error)
> -			goto err_free_mem;
> +			return error;
>  
> -		error = request_threaded_irq(client->irq,
> +		error = devm_request_threaded_irq(&client->dev, client->irq,
>  					NULL, bma150_irq_thread,
>  					IRQF_TRIGGER_RISING | IRQF_ONESHOT,
>  					BMA150_DRIVER, bma150);
> @@ -581,13 +578,12 @@ static int bma150_probe(struct i2c_client *client,
>  			dev_err(&client->dev,
>  				"irq request failed %d, error %d\n",
>  				client->irq, error);
> -			input_unregister_device(bma150->input);
> -			goto err_free_mem;
> +			return error;
>  		}
>  	} else {
>  		error = bma150_register_polled_device(bma150);
>  		if (error)
> -			goto err_free_mem;
> +			return error;
>  	}
>  
>  	i2c_set_clientdata(client, bma150);
> @@ -595,28 +591,12 @@ static int bma150_probe(struct i2c_client *client,
>  	pm_runtime_enable(&client->dev);
>  
>  	return 0;
> -
> -err_free_mem:
> -	kfree(bma150);
> -	return error;
>  }
>  
>  static int bma150_remove(struct i2c_client *client)
>  {
> -	struct bma150_data *bma150 = i2c_get_clientdata(client);
> -
>  	pm_runtime_disable(&client->dev);
>  
> -	if (client->irq > 0) {
> -		free_irq(client->irq, bma150);
> -		input_unregister_device(bma150->input);
> -	} else {
> -		input_unregister_polled_device(bma150->input_polled);
> -		input_free_polled_device(bma150->input_polled);
> -	}
> -
> -	kfree(bma150);
> -
>  	return 0;
>  }
>  
> -- 
> 2.17.1
> 

-- 
Dmitry