[PATCH net] net: hyperv: initialize link status correctly

[Jason Wang]

On 01/27/2014 04:35 PM, David Miller wrote:
> From: Jason Wang <jasowang at redhat.com>
> Date: Mon, 27 Jan 2014 15:30:54 +0800
>
>> Call netif_carrier_on() after register_device(). Otherwise it won't work since
>> the device was still in NETREG_UNINITIALIZED state.
>>
>> Fixes a68f9614614749727286f675d15f1e09d13cb54a
>> (hyperv: Fix race between probe and open calls)
>>
>> Cc: Haiyang Zhang <haiyangz at microsoft.com>
>> Cc: K. Y. Srinivasan <kys at microsoft.com>
>> Reported-by: Di Nie <dnie at redhat.com>
>> Tested-by: Di Nie <dnie at redhat.com>
>> Signed-off-by: Jason Wang <jasowang at redhat.com>
> A device up can occur at the moment you call register_netdevice(),
> therefore that up call can see the carrier as down and fail or
> similar.  So you really cannot resolve the carrier to be on in this
> way.

True, we need a workqueue to synchronize them.