Re: [Xen-devel] [PATCH] xen-netfront: wait xenbus state change when load module manually

[David Miller <davem@xxxxxxxxxxxxx>]

From: Xiao Liang <xiliang@xxxxxxxxxx>
Date: Fri, 27 Jul 2018 17:56:08 +0800

> @@ -1330,6 +1331,11 @@ static struct net_device *xennet_create_dev(struct 
> xenbus_device *dev)
>       netif_carrier_off(netdev);
>  
>       xenbus_switch_state(dev, XenbusStateInitialising);
> +     wait_event(module_load_q,
> +                        xenbus_read_driver_state(dev->otherend) !=
> +                        XenbusStateClosed &&
> +                        xenbus_read_driver_state(dev->otherend) !=
> +                        XenbusStateUnknown);
>       return netdev;
>  
>   exit:

What performs the wakeups that will trigger for this sleep site?

Thank you.

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