linux-kernel - Re: [PATCH] w1:masters/w1-gpio.c: fix error using "__devinit" and "_

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Date:	Tue, 11 Dec 2012 20:42:56 +0100
From:	Daniel Mack <zonque@...il.com>
To:	Cong Ding <dinggnu@...il.com>
CC:	Evgeniy Polyakov <zbr@...emap.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ville Syrjälä <syrjala@....fi>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] w1:masters/w1-gpio.c: fix error using "__devinit" and
 "__devexit"

On 11.12.2012 13:08, Cong Ding wrote:
> w1:masters/w1-gpio.c: fix error using "__devinit" and "__devexit"
> 
> we should use "__devinit" to mark the probe function, "__devexit" to
> mark the remove function, and "__devexit_p" to mark the pointer to the
> remove function.

Nope. CONFIG_HOTPLUG is going away as an option, so you should rather
kill all the __dev* annotations.


Thanks,
Daniel


> the error was found by the following compilation warning:
> WARNING: drivers/w1/masters/w1-gpio.o(.data+0x0): Section mismatch in
> reference from the variable w1_gpio_driver to the function
> .init.text:w1_gpio_probe()
> The variable w1_gpio_driver references
> the function __init w1_gpio_probe()
> If the reference is valid then annotate the
> variable with __init* or __refdata (see linux/init.h) or name the variable:
> *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console
> 
> Signed-off-by: Cong Ding <dinggnu@...il.com>
> ---
>  drivers/w1/masters/w1-gpio.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c
> index 85b363a..33edc3b 100644
> --- a/drivers/w1/masters/w1-gpio.c
> +++ b/drivers/w1/masters/w1-gpio.c
> @@ -72,7 +72,7 @@ static int w1_gpio_probe_dt(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -static int __init w1_gpio_probe(struct platform_device *pdev)
> +static int __devinit w1_gpio_probe(struct platform_device *pdev)
>  {
>  	struct w1_bus_master *master;
>  	struct w1_gpio_platform_data *pdata;
> @@ -158,7 +158,7 @@ static int __init w1_gpio_probe(struct platform_device *pdev)
>  	return err;
>  }
>  
> -static int __exit w1_gpio_remove(struct platform_device *pdev)
> +static int __devexit w1_gpio_remove(struct platform_device *pdev)
>  {
>  	struct w1_bus_master *master = platform_get_drvdata(pdev);
>  	struct w1_gpio_platform_data *pdata = pdev->dev.platform_data;
> @@ -210,7 +210,7 @@ static struct platform_driver w1_gpio_driver = {
>  		.of_match_table = of_match_ptr(w1_gpio_dt_ids),
>  	},
>  	.probe = w1_gpio_probe,
> -	.remove	= __exit_p(w1_gpio_remove),
> +	.remove	= __devexit_p(w1_gpio_remove),
>  	.suspend = w1_gpio_suspend,
>  	.resume = w1_gpio_resume,
>  };
> 

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