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Subject[PATCH 4/7] net/bluetooth/rfcomm/core.c: fix error return code
Date
From: Julia Lawall <Julia.Lawall@lip6.fr>

Initialize return variable before exiting on an error path.

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: Julia Lawall <Julia.Lawall@lip6.fr>

---
net/bluetooth/rfcomm/core.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index c75107e..30141c0 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -2010,8 +2010,10 @@ static int rfcomm_add_listener(bdaddr_t *ba)

/* Add listening session */
s = rfcomm_session_add(sock, BT_LISTEN);
- if (!s)
+ if (!s) {
+ err = -ENOMEM;
goto failed;
+ }

rfcomm_session_hold(s);
return 0;


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