linux-kernel - [PATCH 13/16] net/ax25: Use available error codes

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Message-ID: <Pine.LNX.4.64.1008161828030.19313@ask.diku.dk>
Date:	Mon, 16 Aug 2010 18:28:19 +0200 (CEST)
From:	Julia Lawall <julia@...u.dk>
To:	Joerg Reuter <jreuter@...na.de>,
	Ralf Baechle <ralf@...ux-mips.org>,
	"D, avid S. Miller" <davem@...emloft.net>,
	linux-hams@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 13/16] net/ax25: Use available error codes

From: Julia Lawall <julia@...u.dk>

Error codes are stored in err, but the return value is always 0.  Return
err 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@...u.dk>

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

 net/ax25/af_ax25.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index cfdfd7e..26eaebf 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1103,7 +1103,7 @@ done:
 out:
 	release_sock(sk);
 
-	return 0;
+	return err;
 }
 
 /*
--
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