linux-kernel - Re: [PATCH] Staging: gdm72xx: fix coding style

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Message-ID: <20140930102004.GC6459@L80496>
Date:	Tue, 30 Sep 2014 12:20:04 +0200
From:	Thibaut Robert <thibaut.robert@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Michalis Pappas <mpappas@...tmail.fm>,
	Davide Gianforte <davide@...gisdave.org>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Staging: gdm72xx: fix coding style

Le Monday 29 Sep 2014 à 11:31:24 (-0700), Joe Perches a écrit :
> On Mon, 2014-09-29 at 20:15 +0200, Thibaut Robert wrote:
> > This patch remove a checkstyle warning in netlink_k.c.
> > Note: This is my homework of the day.
> 
> The "Note: " line isn't useful for a commit message.
> Neither is the checkpatch warning bit.
> 
> Maybe the commit message could be something like:
> "Remove unnecessary else after return".
> 
> > diff --git a/drivers/staging/gdm72xx/netlink_k.c b/drivers/staging/gdm72xx/netlink_k.c
> []
> > @@ -147,12 +147,11 @@ int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len)
> >  
> >  	if (!ret) {
> >  		return len;
> > -	} else {
> > -		if (ret != -ESRCH) {
> > -			pr_err("netlink_broadcast g=%d, t=%d, l=%d, r=%d\n",
> > -			       group, type, len, ret);
> > -		}
> > -		ret = 0;
> >  	}
> > -	return ret;
> > +
> > +	if (ret != -ESRCH) {
> > +		pr_err("netlink_broadcast g=%d, t=%d, l=%d, r=%d\n",
> > +		       group, type, len, ret);
> > +	}
> 
> OK, but you don't need the braces around the pr_err.
> 
> My preference is to also fix the typo in the function
> and would be something like:
> ---
>  drivers/staging/gdm72xx/netlink_k.c | 23 ++++++++++-------------
>  1 file changed, 10 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/staging/gdm72xx/netlink_k.c b/drivers/staging/gdm72xx/netlink_k.c
> index 9bf00e6..43d2a49 100644
> --- a/drivers/staging/gdm72xx/netlink_k.c
> +++ b/drivers/staging/gdm72xx/netlink_k.c
> @@ -120,9 +120,9 @@ int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len)
>  	struct nlmsghdr *nlh;
>  	int ret = 0;
>  
> -	if (group > ND_MAX_GROUP) {
> -		pr_err("Group %d is invalied.\n", group);
> -		pr_err("Valid group is 0 ~ %d.\n", ND_MAX_GROUP);
> +	if (group < 0 || group > ND_MAX_GROUP) {
> +		pr_err("Invalid group %d (valid groups are 0 to %d)\n",
> +		       group, ND_MAX_GROUP);
>  		return -EINVAL;
>  	}
>  
> @@ -144,15 +144,12 @@ int netlink_send(struct sock *sock, int group, u16 type, void *msg, int len)
>  	NETLINK_CB(skb).dst_group = 0;
>  
>  	ret = netlink_broadcast(sock, skb, 0, group+1, GFP_ATOMIC);
> -
> -	if (!ret) {
> +	if (!ret)
>  		return len;
> -	} else {
> -		if (ret != -ESRCH) {
> -			pr_err("netlink_broadcast g=%d, t=%d, l=%d, r=%d\n",
> -			       group, type, len, ret);
> -		}
> -		ret = 0;
> -	}
> -	return ret;
> +
> +	if (ret != -ESRCH)
> +		pr_err("netlink_broadcast g=%d, t=%d, l=%d, r=%d\n",
> +		       group, type, len, ret);
> +
> +	return 0;
>  }
> 
> 
> 
Thanks for this newbie friendly attitude. That's much appreciated. An updated patch will follow.
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