linux-kernel - Re: [PATCH 1/1] mm/hwpoison-inject.c: remove unnecessary null test before debugfs_remove

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Date:	Fri, 27 Jun 2014 17:05:12 -0400
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To:	Fabian Frederick <fabf@...net.be>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 1/1] mm/hwpoison-inject.c: remove unnecessary null test
 before debugfs_remove_recursive

On Fri, Jun 27, 2014 at 10:58:16PM +0200, Fabian Frederick wrote:
> Fix checkpatch warning:
> "WARNING: debugfs_remove_recursive(NULL) is safe this check is probably not required"
> 
> Cc: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
> Cc: linux-mm@...ck.org
> Signed-off-by: Fabian Frederick <fabf@...net.be>

Looks good to me, thank you.

Acked-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>

> ---
>  mm/hwpoison-inject.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c
> index 95487c7..329caf5 100644
> --- a/mm/hwpoison-inject.c
> +++ b/mm/hwpoison-inject.c
> @@ -72,8 +72,7 @@ DEFINE_SIMPLE_ATTRIBUTE(unpoison_fops, NULL, hwpoison_unpoison, "%lli\n");
>  
>  static void pfn_inject_exit(void)
>  {
> -	if (hwpoison_dir)
> -		debugfs_remove_recursive(hwpoison_dir);
> +	debugfs_remove_recursive(hwpoison_dir);
>  }
>  
>  static int pfn_inject_init(void)
> -- 
> 1.8.4.5
> 
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