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irda: merge exit paths

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Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ilpo Järvinen 2008-12-14 23:18:30 -08:00 committed by David S. Miller
parent 037322abe6
commit e780f1c33d
1 changed files with 8 additions and 9 deletions
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17
net/irda/irlap_frame.c
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@ -1325,6 +1325,7 @@ int irlap_driver_rcv(struct sk_buff *skb, struct net_device *dev,
struct irlap_cb *self;
int command;
__u8 control;
int ret = -1;
if (!net_eq(dev_net(dev), &init_net))
goto out;
@ -1333,25 +1334,21 @@ int irlap_driver_rcv(struct sk_buff *skb, struct net_device *dev,
self = (struct irlap_cb *) dev->atalk_ptr;
/* If the net device is down, then IrLAP is gone! */
if (!self || self->magic != LAP_MAGIC) {
dev_kfree_skb(skb);
return -1;
}
if (!self || self->magic != LAP_MAGIC)
goto err;
/* We are no longer an "old" protocol, so we need to handle
* share and non linear skbs. This should never happen, so
* we don't need to be clever about it. Jean II */
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) {
IRDA_ERROR("%s: can't clone shared skb!\n", __func__);
dev_kfree_skb(skb);
return -1;
goto err;
}
/* Check if frame is large enough for parsing */
if (!pskb_may_pull(skb, 2)) {
IRDA_ERROR("%s: frame too short!\n", __func__);
dev_kfree_skb(skb);
return -1;
goto err;
}
command = skb->data[0] & CMD_FRAME;
@ -1442,7 +1439,9 @@ int irlap_driver_rcv(struct sk_buff *skb, struct net_device *dev,
break;
}
out:
ret = 0;
err:
/* Always drop our reference on the skb */
dev_kfree_skb(skb);
return 0;
return ret;
}