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 <bige...@linutronix.de>
Signed-off-by: Andrew Jones <drjo...@redhat.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 <jasow...@redhat.com>

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