diff options
Diffstat (limited to 'drivers/net/xen-netback/xenbus.c')
| -rw-r--r-- | drivers/net/xen-netback/xenbus.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index d2d7cd9145b1..a56d3eab35dd 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -495,26 +495,26 @@ static void backend_disconnect(struct backend_info *be) struct xenvif *vif = be->vif; if (vif) { + unsigned int num_queues = vif->num_queues; unsigned int queue_index; - struct xenvif_queue *queues; xen_unregister_watchers(vif); #ifdef CONFIG_DEBUG_FS xenvif_debugfs_delif(vif); #endif /* CONFIG_DEBUG_FS */ xenvif_disconnect_data(vif); - for (queue_index = 0; - queue_index < vif->num_queues; - ++queue_index) - xenvif_deinit_queue(&vif->queues[queue_index]); - spin_lock(&vif->lock); - queues = vif->queues; + /* At this point some of the handlers may still be active + * so we need to have additional synchronization here. + */ vif->num_queues = 0; - vif->queues = NULL; - spin_unlock(&vif->lock); + synchronize_net(); - vfree(queues); + for (queue_index = 0; queue_index < num_queues; ++queue_index) + xenvif_deinit_queue(&vif->queues[queue_index]); + + vfree(vif->queues); + vif->queues = NULL; xenvif_disconnect_ctrl(vif); } |