linux-kernel - Re: [PATCH] SUNRPC: svc_register error overwritten in next iteration

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Date:	Mon, 14 Mar 2011 18:36:45 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	roel <roel.kluin@...il.com>
Cc:	Neil Brown <neilb@...e.de>, linux-nfs@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] SUNRPC: svc_register error overwritten in next
 iteration

On Sat, Mar 12, 2011 at 02:27:35PM +0100, roel wrote:
> The break is in the inner loop, the svc_register() error is overwritten
> in the next iteration. Only the error in the last iteration is returned.
> 
> Signed-off-by: Roel Kluin <roel.kluin@...il.com>
> ---
>  net/sunrpc/svc.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> Is this needed?
> 
> diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
> index 08e05a8..5fd08c0 100644
> --- a/net/sunrpc/svc.c
> +++ b/net/sunrpc/svc.c
> @@ -889,6 +889,8 @@ int svc_register(const struct svc_serv *serv, const int family,
>  			if (error < 0)
>  				break;

May as well just "goto out" or "return error" here?

But: aren't we missing some cleanup?  If we succesfully register one
program then fail at a second one, don't we need to unregister the
first?

--b.

>  		}
> +		if (error < 0)
> +			break;
>  	}
>  
>  	return error;
--
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