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Phonet: fix oops in phonet_address_del() on non-Phonet device

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A NULL dereference would occur when trying to delete an addres from a
network device that does not have any Phonet address.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rémi Denis-Courmont 2008-11-26 15:26:43 -08:00 committed by David S. Miller
parent 3ec1925590
commit 7e5ab54296
1 changed files with 1 additions and 1 deletions
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2
net/phonet/pn_dev.c
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@ -115,7 +115,7 @@ int phonet_address_del(struct net_device *dev, u8 addr)
pnd = __phonet_get(dev);
if (!pnd || !test_and_clear_bit(addr >> 2, pnd->addrs))
err = -EADDRNOTAVAIL;
if (bitmap_empty(pnd->addrs, 64))
else if (bitmap_empty(pnd->addrs, 64))
__phonet_device_free(pnd);
spin_unlock_bh(&pndevs.lock);
return err;