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authorJulia Lawall <julia@diku.dk>2010-12-29 04:01:03 +0000
committerDavid S. Miller <davem@davemloft.net>2010-12-31 12:52:05 -0800
commitb9556f9a1abdc56a179ac7ba6053469373b6de0f (patch)
tree8302a502a8428884a0163b526b057fb92831ff35
parentf4d5900a99dbc354ef1ba384d445ff80ae4d77b4 (diff)
downloadop-kernel-dev-b9556f9a1abdc56a179ac7ba6053469373b6de0f.zip
op-kernel-dev-b9556f9a1abdc56a179ac7ba6053469373b6de0f.tar.gz
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.c5
1 files changed, 4 insertions, 1 deletions
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;
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