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| author | Karl Hiramoto <karl@hiramoto.org> | 2010-09-23 01:50:54 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-26 18:29:18 -0700 |
| commit | a3d6713fbd2ccb50898a6f88664da96a7857c039 (patch) | |
| tree | e772805828ad8c862c10b1845878baffbb11248e | |
| parent | ca9a783575d2affed30ef27a3427a7705527ddac (diff) | |
| download | linux-stable-a3d6713fbd2ccb50898a6f88664da96a7857c039.tar.gz linux-stable-a3d6713fbd2ccb50898a6f88664da96a7857c039.tar.bz2 linux-stable-a3d6713fbd2ccb50898a6f88664da96a7857c039.zip | |
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>
| -rw-r--r-- | net/atm/br2684.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/net/atm/br2684.c b/net/atm/br2684.c index 651babdfab38..ad2b232a2055 100644 --- a/net/atm/br2684.c +++ b/net/atm/br2684.c @@ -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); |