On 8/22/15 5:11 PM, 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 <julia.law...@lip6.fr>

Acked-by: Santosh Shilimkar <ssant...@kernel.org>
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