linux-kernel - Re: [PATCH 3/5] drivers/atm/atmtcp.c: fix error return code

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Date:	Thu, 7 Aug 2014 09:10:12 -0400
From:	chas williams - CONTRACTOR <chas@....nrl.navy.mil>
To:	Julia Lawall <Julia.Lawall@...6.fr>
Cc:	kernel-janitors@...r.kernel.org,
	linux-atm-general@...ts.sourceforge.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] drivers/atm/atmtcp.c: fix error return code

On Thu,  7 Aug 2014 14:49:06 +0200
Julia Lawall <Julia.Lawall@...6.fr> wrote:

> From: Julia Lawall <Julia.Lawall@...6.fr>
> 
> Convert a zero return value on error to a negative one, as returned
> elsewhere in the function.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
...
> 
> diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c
> index 0e3f8f9..c8e4fb4 100644
> --- a/drivers/atm/atmtcp.c
> +++ b/drivers/atm/atmtcp.c
> @@ -299,6 +299,7 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb)
>  	out_vcc = find_vcc(dev, ntohs(hdr->vpi), ntohs(hdr->vci));
>  	read_unlock(&vcc_sklist_lock);
>  	if (!out_vcc) {
> +		result = -ESRCH;

This should probably be -EUNATCH to match the rest of the code.

>  		atomic_inc(&vcc->stats->tx_err);
>  		goto done;
>  	}
> 

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