linux-kernel - Re: [PATCH V2 20/20] mfd: wm8400: Use devm_mfd_add_devices() for mfd

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Date:	Mon, 11 Apr 2016 10:32:41 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	corbet@....net, andreas.werner@....de, tony@...mide.com,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, patches@...nsource.wolfsonmicro.com,
	Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH V2 20/20] mfd: wm8400: Use devm_mfd_add_devices() for
 mfd_device registration

Applied, thanks.

On Fri, 08 Apr 2016, Laxman Dewangan wrote:

> Use devm_mfd_add_devices() for MFD devices registration and get
> rid of .remove callback to remove MFD child-devices. This is done
> by managed device framework.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
> CC: Mark Brown <broonie@...nel.org>
> CC: patches@...nsource.wolfsonmicro.com
> Acked-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
> 
> ---
> Changes from V1:
> - Convert mfd to MFD.
> - Collected acks.
> 
>  drivers/mfd/wm8400-core.c | 25 +++----------------------
>  1 file changed, 3 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/mfd/wm8400-core.c b/drivers/mfd/wm8400-core.c
> index 3bd44a4..9fd8230 100644
> --- a/drivers/mfd/wm8400-core.c
> +++ b/drivers/mfd/wm8400-core.c
> @@ -70,7 +70,7 @@ static int wm8400_register_codec(struct wm8400 *wm8400)
>  		.pdata_size = sizeof(*wm8400),
>  	};
>  
> -	return mfd_add_devices(wm8400->dev, -1, &cell, 1, NULL, 0, NULL);
> +	return devm_mfd_add_devices(wm8400->dev, -1, &cell, 1, NULL, 0, NULL);
>  }
>  
>  /*
> @@ -111,7 +111,7 @@ static int wm8400_init(struct wm8400 *wm8400,
>  	ret = wm8400_register_codec(wm8400);
>  	if (ret != 0) {
>  		dev_err(wm8400->dev, "Failed to register codec\n");
> -		goto err_children;
> +		return ret;
>  	}
>  
>  	if (pdata && pdata->platform_init) {
> @@ -119,21 +119,12 @@ static int wm8400_init(struct wm8400 *wm8400,
>  		if (ret != 0) {
>  			dev_err(wm8400->dev, "Platform init failed: %d\n",
>  				ret);
> -			goto err_children;
> +			return ret;
>  		}
>  	} else
>  		dev_warn(wm8400->dev, "No platform initialisation supplied\n");
>  
>  	return 0;
> -
> -err_children:
> -	mfd_remove_devices(wm8400->dev);
> -	return ret;
> -}
> -
> -static void wm8400_release(struct wm8400 *wm8400)
> -{
> -	mfd_remove_devices(wm8400->dev);
>  }
>  
>  static const struct regmap_config wm8400_regmap_config = {
> @@ -176,15 +167,6 @@ static int wm8400_i2c_probe(struct i2c_client *i2c,
>  	return wm8400_init(wm8400, dev_get_platdata(&i2c->dev));
>  }
>  
> -static int wm8400_i2c_remove(struct i2c_client *i2c)
> -{
> -	struct wm8400 *wm8400 = i2c_get_clientdata(i2c);
> -
> -	wm8400_release(wm8400);
> -
> -	return 0;
> -}
> -
>  static const struct i2c_device_id wm8400_i2c_id[] = {
>         { "wm8400", 0 },
>         { }
> @@ -196,7 +178,6 @@ static struct i2c_driver wm8400_i2c_driver = {
>  		.name = "WM8400",
>  	},
>  	.probe    = wm8400_i2c_probe,
> -	.remove   = wm8400_i2c_remove,
>  	.id_table = wm8400_i2c_id,
>  };
>  #endif

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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