linux-kernel - Re: [PATCH 4/7] net/bluetooth/rfcomm/core.c: fix error return code

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Message-ID: <1346264609.23377.6.camel@aeonflux>
Date:	Wed, 29 Aug 2012 11:23:29 -0700
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Julia Lawall <Julia.Lawall@...6.fr>
Cc:	kernel-janitors@...r.kernel.org,
	Gustavo Padovan <gustavo@...ovan.org>,
	Johan Hedberg <johan.hedberg@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/7] net/bluetooth/rfcomm/core.c: fix error return code

Hi Julia,

> Initialize return variable before exiting on an error path.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> 
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
> 
> ---
>  net/bluetooth/rfcomm/core.c |    4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

Acked-by: Marcel Holtmann <marcel@...tmann.org>

Regards

Marcel


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