diff options
| -rw-r--r-- | drivers/net/virtio_net.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 3d2a90a6264..43a71d911b1 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1094,6 +1094,11 @@ static int virtnet_cpu_callback(struct notifier_block *nfb, { struct virtnet_info *vi = container_of(nfb, struct virtnet_info, nb); + mutex_lock(&vi->config_lock); + + if (!vi->config_enable) + goto done; + switch(action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: case CPU_DOWN_FAILED: @@ -1106,6 +1111,9 @@ static int virtnet_cpu_callback(struct notifier_block *nfb, default: break; } + +done: + mutex_unlock(&vi->config_lock); return NOTIFY_OK; } |