linux-kernel - Re: [PATCH v2] ocfs2: Reomve err less than zero check

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Message-ID: <d23cd1ee-0607-6254-621d-85e2981e24d2@linux.alibaba.com>
Date:   Mon, 10 May 2021 19:33:04 +0800
From:   Joseph Qi <joseph.qi@...ux.alibaba.com>
To:     Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>, mark@...heh.com,
        akpm <akpm@...ux-foundation.org>
Cc:     jlbec@...lplan.org, ocfs2-devel@....oracle.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ocfs2: Reomve err less than zero check



On 5/10/21 6:37 PM, Jiapeng Chong wrote:
> Because enum dlm_status starts from 0, the check for err < 0 is always
> false.
> 
> Clean up the following coccicheck warning:
> 
> fs/ocfs2/dlm/dlmdebug.c:222 dlm_errname() warn: unsigned 'err' is never
> less than zero.
> 
> fs/ocfs2/dlm/dlmdebug.c:214 dlm_errmsg() warn: unsigned 'err' is never
> less than zero.
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>

Reviewed-by: Joseph Qi <joseph.qi@...ux.alibaba.com>
> ---
> Changes in v2:
>   -Update commit log.
> 
>  fs/ocfs2/dlm/dlmdebug.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
> index d442cf5..817914d 100644
> --- a/fs/ocfs2/dlm/dlmdebug.c
> +++ b/fs/ocfs2/dlm/dlmdebug.c
> @@ -211,7 +211,7 @@ void dlm_print_one_lock(struct dlm_lock *lockid)
>  
>  const char *dlm_errmsg(enum dlm_status err)
>  {
> -	if (err >= DLM_MAXSTATS || err < 0)
> +	if (err >= DLM_MAXSTATS)
>  		return dlm_errmsgs[DLM_MAXSTATS];
>  	return dlm_errmsgs[err];
>  }
> @@ -219,7 +219,7 @@ const char *dlm_errmsg(enum dlm_status err)
>  
>  const char *dlm_errname(enum dlm_status err)
>  {
> -	if (err >= DLM_MAXSTATS || err < 0)
> +	if (err >= DLM_MAXSTATS)
>  		return dlm_errnames[DLM_MAXSTATS];
>  	return dlm_errnames[err];
>  }
>