linux-kernel - [PATCH 2/2] drivers/s390/net/ctcm

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Date:	Mon, 17 Sep 2012 10:12:01 +0200
From:	Peter Senna Tschudin <peter.senna@...il.com>
To:	ursula.braun@...ibm.com
Cc:	blaschka@...ux.vnet.ibm.com, linux390@...ibm.com,
	schwidefsky@...ibm.com, heiko.carstens@...ibm.com,
	linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Peter Senna Tschudin <peter.senna@...il.com>
Subject: [PATCH 2/2] drivers/s390/net/ctcm_main.c: fix error return code

From: Peter Senna Tschudin <peter.senna@...il.com>

Convert a nonnegative error return code 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/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@...il.com>
---
 drivers/s390/net/ctcm_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index 5227e57..98ea9cc 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -1454,7 +1454,7 @@ static int add_channel(struct ccw_device *cdev, enum ctcm_channel_types type,
 				ch_fsm_len, GFP_KERNEL);
 	}
 	if (ch->fsm == NULL)
-				goto free_return;
+				goto nomem_return;
 
 	fsm_newstate(ch->fsm, CTC_STATE_IDLE);
 
-- 
1.7.11.4

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