linux-kernel - Re: [PATCH] virtio-net: fix module unloading

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Message-ID: <37d51fa3-21e4-ae55-6d5b-6ade97ae4bc8@redhat.com>
Date:   Wed, 26 Jul 2017 11:52:07 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Andrew Jones <drjones@...hat.com>, linux-kernel@...r.kernel.org
Cc:     mst@...hat.com, virtualization@...ts.linux-foundation.org,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: Re: [PATCH] virtio-net: fix module unloading



On 2017年07月24日 21:38, Andrew Jones wrote:
> Unregister the driver before removing multi-instance hotplug
> callbacks. This order avoids the warning issued from
> __cpuhp_remove_state_cpuslocked when the number of remaining
> instances isn't yet zero.
>
> Fixes: 8017c279196a ("net/virtio-net: Convert to hotplug state machine")
> Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> Signed-off-by: Andrew Jones <drjones@...hat.com>
> ---
>   drivers/net/virtio_net.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 99a26a9efec1..f41ab0ea942a 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -2743,9 +2743,9 @@ module_init(virtio_net_driver_init);
>   
>   static __exit void virtio_net_driver_exit(void)
>   {
> +	unregister_virtio_driver(&virtio_net_driver);
>   	cpuhp_remove_multi_state(CPUHP_VIRT_NET_DEAD);
>   	cpuhp_remove_multi_state(virtionet_online);
> -	unregister_virtio_driver(&virtio_net_driver);
>   }
>   module_exit(virtio_net_driver_exit);
>   

Acked-by: Jason Wang <jasowang@...hat.com>