linux-kernel - Re: [PATCH RESEND 3/7] watchdog: mv64x60_wdt: use devm

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Date:	Mon, 29 Apr 2013 10:55:07 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Jingoo Han <jg1.han@...sung.com>
Cc:	'Andrew Morton' <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, 'Wim Van Sebroeck' <wim@...ana.be>,
	linux-watchdog@...r.kernel.org
Subject: Re: [PATCH RESEND 3/7] watchdog: mv64x60_wdt: use devm_ioremap()

On Mon, Apr 29, 2013 at 06:35:15PM +0900, Jingoo Han wrote:
> Use devm_ioremap() to make cleanup paths simpler.
> 
> Signed-off-by: Jingoo Han <jg1.han@...sung.com>

This patch also addresses the missing call to iounmap() if the call
to misc_register fails.

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

> ---
>  drivers/watchdog/mv64x60_wdt.c |    4 +---
>  1 files changed, 1 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/watchdog/mv64x60_wdt.c b/drivers/watchdog/mv64x60_wdt.c
> index c7fb878..e4cf980 100644
> --- a/drivers/watchdog/mv64x60_wdt.c
> +++ b/drivers/watchdog/mv64x60_wdt.c
> @@ -276,7 +276,7 @@ static int mv64x60_wdt_probe(struct platform_device *dev)
>  	if (!r)
>  		return -ENODEV;
>  
> -	mv64x60_wdt_regs = ioremap(r->start, resource_size(r));
> +	mv64x60_wdt_regs = devm_ioremap(&dev->dev, r->start, resource_size(r));
>  	if (mv64x60_wdt_regs == NULL)
>  		return -ENOMEM;
>  
> @@ -293,8 +293,6 @@ static int mv64x60_wdt_remove(struct platform_device *dev)
>  
>  	mv64x60_wdt_handler_disable();
>  
> -	iounmap(mv64x60_wdt_regs);
> -
>  	return 0;
>  }
>  
> -- 
> 1.7.2.5
> 
> 
> --
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