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br2684: fix scheduling while atomic 

You can't call atomic_notifier_chain_unregister() while in atomic context.

Fix, call un/register_atmdevice_notifier in module __init and __exit.

Bug report:
http://comments.gmane.org/gmane.linux.network/172603

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Signed-off-by: Karl Hiramoto <karl@hiramoto.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karl Hiramoto 2010-09-23 01:50:54 +00:00 committed by David S. Miller
parent ca9a783575
commit a3d6713fbd
1 changed files with 2 additions and 10 deletions
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12
net/atm/br2684.c
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@ -399,12 +399,6 @@ static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
unregister_netdev(net_dev);
free_netdev(net_dev);
}
read_lock_irq(&devs_lock);
if (list_empty(&br2684_devs)) {
/* last br2684 device */
unregister_atmdevice_notifier(&atm_dev_notifier);
}
read_unlock_irq(&devs_lock);
return;
}
@ -675,7 +669,6 @@ static int br2684_create(void __user *arg)
if (list_empty(&br2684_devs)) {
/* 1st br2684 device */
register_atmdevice_notifier(&atm_dev_notifier);
brdev->number = 1;
} else
brdev->number = BRPRIV(list_entry_brdev(br2684_devs.prev))->number + 1;
@ -815,6 +808,7 @@ static int __init br2684_init(void)
return -ENOMEM;
#endif
register_atm_ioctl(&br2684_ioctl_ops);
register_atmdevice_notifier(&atm_dev_notifier);
return 0;
}
@ -830,9 +824,7 @@ static void __exit br2684_exit(void)
#endif
/* if not already empty */
if (!list_empty(&br2684_devs))
unregister_atmdevice_notifier(&atm_dev_notifier);
unregister_atmdevice_notifier(&atm_dev_notifier);
while (!list_empty(&br2684_devs)) {
net_dev = list_entry_brdev(br2684_devs.next);