From faa739fb5df56aadab96bcd2f6eb3486cc3a3aec Mon Sep 17 00:00:00 2001
From: Mustafa Ismail <mustafa.ismail@intel.com>
Date: Mon, 22 Aug 2016 18:17:12 -0500
Subject: i40iw: Add missing check for interface already open

In i40iw_open(), check if interface is already open
and return success if it is.

Fixes: 8e06af711bf2 ("i40iw: add main, hdr, status")

Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/i40iw/i40iw_main.c b/drivers/infiniband/hw/i40iw/i40iw_main.c
index 6e90813..0cbbe40 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_main.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_main.c
@@ -1558,6 +1558,10 @@ static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
 	enum i40iw_status_code status;
 	struct i40iw_handler *hdl;
 
+	hdl = i40iw_find_netdev(ldev->netdev);
+	if (hdl)
+		return 0;
+
 	hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
 	if (!hdl)
 		return -ENOMEM;
-- 
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