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| author | Julia Lawall <julia@diku.dk> | 2010-12-29 04:01:03 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-31 12:52:05 -0800 |
| commit | b9556f9a1abdc56a179ac7ba6053469373b6de0f (patch) | |
| tree | 8302a502a8428884a0163b526b057fb92831ff35 | |
| parent | f4d5900a99dbc354ef1ba384d445ff80ae4d77b4 (diff) | |
| download | linux-b9556f9a1abdc56a179ac7ba6053469373b6de0f.tar.bz2 | |
drivers/atm/atmtcp.c: add missing atm_dev_put
The earlier call to atm_dev_lookup increases the reference count of dev,
so decrease it on the way out.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression x, E;
constant C;
@@
x = atm_dev_lookup(...);
... when != false x != NULL
when != true x == NULL
when != \(E = x\|x = E\)
when != atm_dev_put(dev);
*return -C;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/atm/atmtcp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c index 2b464b631f22..0b0625054a87 100644 --- a/drivers/atm/atmtcp.c +++ b/drivers/atm/atmtcp.c @@ -392,7 +392,10 @@ static int atmtcp_attach(struct atm_vcc *vcc,int itf) atm_dev_put(dev); return -EMEDIUMTYPE; } - if (PRIV(dev)->vcc) return -EBUSY; + if (PRIV(dev)->vcc) { + atm_dev_put(dev); + return -EBUSY; + } } else { int error; |