From: Julia Lawall <julia@xxxxxxx> 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@xxxxxxx> --- drivers/atm/atmtcp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c index 2b464b6..0b06250 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; -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
