# Re: \[PATCH 10/11\] ah6: fix error return code

- From: Herbert Xu \<herbert@gondor.apana.org.au\>
- Date: 2015-08-24 12:13:55 
- List: netdev
- Page: https://ratatoskr.run/netdev/2015/08/4562739
- Thread: https://ratatoskr.run/kernel-janitors/2015/08/4562177/t.md

```text
On Sun, Aug 23, 2015 at 02:11:21AM +0200, Julia Lawall wrote:
> Return a negative error code on failure.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> identifier ret; expression e1,e2;
> @@
> (
> if (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> // </smpl>
> 
> Signed-off-by: Julia Lawall <redacted>

Acked-by: Herbert Xu <herbert@gondor.apana.org.au>

This problem exists in net/ipv4/ah4.c too, right?

Thanks,
-- 
Email: Herbert Xu [ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
```