* [PATCH] drivers/atm/atmtcp.c: add missing atm_dev_put
@ 2010-12-29 14:01 Julia Lawall
2010-12-31 20:52 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Julia Lawall @ 2010-12-29 14:01 UTC (permalink / raw)
To: Chas Williams, linux-atm-general, netdev, linux-kernel,
kernel-janitors
From: Julia Lawall <julia@diku.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@diku.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;
^ permalink raw reply related [flat|nested] 2+ messages in thread
end of thread, other threads:[~2010-12-31 20:52 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-12-29 14:01 [PATCH] drivers/atm/atmtcp.c: add missing atm_dev_put Julia Lawall
2010-12-31 20:52 ` David Miller
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).