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path: root/drivers/net/ethernet/cisco/enic/enic_api.c
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Diffstat (limited to 'drivers/net/ethernet/cisco/enic/enic_api.c')
-rw-r--r--drivers/net/ethernet/cisco/enic/enic_api.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic_api.c b/drivers/net/ethernet/cisco/enic/enic_api.c
index b161f24522b8..3bdc74fba1e3 100644
--- a/drivers/net/ethernet/cisco/enic/enic_api.c
+++ b/drivers/net/ethernet/cisco/enic/enic_api.c
@@ -1,4 +1,4 @@
-/**
+/*
* Copyright 2013 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
@@ -34,6 +34,12 @@ int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf,
struct vnic_dev *vdev = enic->vdev;
spin_lock(&enic->enic_api_lock);
+ while (enic->enic_api_busy) {
+ spin_unlock(&enic->enic_api_lock);
+ cpu_relax();
+ spin_lock(&enic->enic_api_lock);
+ }
+
spin_lock_bh(&enic->devcmd_lock);
vnic_dev_cmd_proxy_by_index_start(vdev, vf);