On Thu, 7 Aug 2014, chas williams - CONTRACTOR wrote:

On Thu,  7 Aug 2014 14:49:06 +0200
Julia Lawall [off-list ref] wrote:

quoted

From: Julia Lawall <redacted>

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/)

...

quoted

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.

Thanks.  I will send a new version.

julia

quoted

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

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