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drivers/atm/atmtcp.c: add missing atm_dev_put

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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Julia Lawall 2010-12-29 04:01:03 +00:00 • committed by David S. Miller
commit b9556f9a1a
1 changed files with 4 additions and 1 deletions
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5
drivers/atm/atmtcp.c
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@ -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;