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Message-ID: <Pine.LNX.4.64.1012291500310.8559@pc-004.diku.dk> Date: Wed, 29 Dec 2010 15:01:03 +0100 (CET) From: Julia Lawall <julia@...u.dk> To: Chas Williams <chas@....nrl.navy.mil>, linux-atm-general@...ts.sourceforge.net, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org Subject: [PATCH] drivers/atm/atmtcp.c: add missing atm_dev_put From: Julia Lawall <julia@...u.dk> 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@...u.dk> --- 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 netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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