xen-netback: keep a local pointer for vif in backend_disconnect()

This patch replaces use of 'be->vif' with 'vif' and hence generally
makes the function look tidier. No semantic change.

Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 18 insertions, 14 deletions

diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
index bb854f92f5a5..d82ddc913b4c 100644
--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -492,24 +492,28 @@ static int backend_create_xenvif(struct backend_info *be)
 
 static void backend_disconnect(struct backend_info *be)
 {
-        if (be->vif) {
+        struct xenvif *vif = be->vif;
+
+        if (vif) {
                 unsigned int queue_index;
 
-                xen_unregister_watchers(be->vif);
+                xen_unregister_watchers(vif);
 #ifdef CONFIG_DEBUG_FS
-                xenvif_debugfs_delif(be->vif);
+                xenvif_debugfs_delif(vif);
 #endif /* CONFIG_DEBUG_FS */
-                xenvif_disconnect_data(be->vif);
-                for (queue_index = 0; queue_index < be->vif->num_queues; ++queue_index)
-                        xenvif_deinit_queue(&be->vif->queues[queue_index]);
-
-                spin_lock(&be->vif->lock);
-                vfree(be->vif->queues);
-                be->vif->num_queues = 0;
-                be->vif->queues = NULL;
-                spin_unlock(&be->vif->lock);
-
-                xenvif_disconnect_ctrl(be->vif);
+                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);
+                vfree(vif->queues);
+                vif->num_queues = 0;
+                vif->queues = NULL;
+                spin_unlock(&vif->lock);
+
+                xenvif_disconnect_ctrl(vif);
         }
 }