[PATCH 10/16] drivers/net/wireless/wl12xx: Use available error codes

[PATCH 10/16] drivers/net/wireless/wl12xx: Use available error codes

[Julia Lawall]

From: Julia Lawall <julia@diku.dk>

Error codes are stored in ret, but the return value is always 0.  Return
ret instead.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
local idexpression x;
constant C;
@@

if (...) { ...
  x = -C
  ... when != x
(
  return <+...x...+>;
|
  return NULL;
|
  return;
|
* return ...;
)
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>

---
This changes the semantics and has not been tested.

 drivers/net/wireless/wl12xx/wl1271_acx.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/wl12xx/wl1271_acx.c b/drivers/net/wireless/wl12xx/wl1271_acx.c
index bb245f0..f03ad08 100644
--- a/drivers/net/wireless/wl12xx/wl1271_acx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_acx.c
@@ -269,7 +269,7 @@ int wl1271_acx_pd_threshold(struct wl1271 *wl)
 
 out:
 	kfree(pd);
-	return 0;
+	return ret;
 }
 
 int wl1271_acx_slot(struct wl1271 *wl, enum acx_slot_type slot_time)

Re: [PATCH 10/16] drivers/net/wireless/wl12xx: Use available error codes

[Luciano Coelho]

On Mon, 2010-08-16 at 18:27 +0200, ext Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> Error codes are stored in ret, but the return value is always 0.  Return
> ret instead.
> 
> The semantic match that finds this problem is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @r@
> local idexpression x;
> constant C;
> @@
> 
> if (...) { ...
>   x = -C
>   ... when != x
> (
>   return <+...x...+>;
> |
>   return NULL;
> |
>   return;
> |
> * return ...;
> )
> }
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
> ---


This was indeed a bug.  Thanks!

Acked-by: Luciano Coelho <luciano.coelho@nokia.com>

-- 
Cheers,
Luca.