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[NET]: Fix hotplug race during device registration.

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From: Thomas de Grenier de Latour <degrenier@easyconnect.fr>

On Sun, 9 Apr 2006 21:56:59 +0400,
Sergey Vlasov <vsu@altlinux.ru> wrote:

> However, show_address() does not output anything unless
> dev->reg_state == NETREG_REGISTERED - and this state is set by
> netdev_run_todo() only after netdev_register_sysfs() returns, so in
> the meantime (while netdev_register_sysfs() is busy adding the
> "statistics" attribute group) some process may see an empty "address"
> attribute.

I've tried the attached patch, suggested by Sergey Vlasov on
hotplug-devel@, and as far as i can test it works just fine.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sergey Vlasov 2006-04-09 22:32:48 -07:00 committed by David S. Miller
parent 30aaa154fc
commit 9469d458b9
1 changed files with 1 additions and 1 deletions
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2
net/core/dev.c
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@ -3042,11 +3042,11 @@ void netdev_run_todo(void)
switch(dev->reg_state) {
case NETREG_REGISTERING:
dev->reg_state = NETREG_REGISTERED;
err = netdev_register_sysfs(dev);
if (err)
printk(KERN_ERR "%s: failed sysfs registration (%d)\n",
dev->name, err);
dev->reg_state = NETREG_REGISTERED;
break;
case NETREG_UNREGISTERING: