From dc05980dd736bfbe5b2524b463e5f098e67a64e9 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@mellanox.co.il>
Date: Mon, 20 Mar 2006 10:08:25 -0800
Subject: [PATCH] IB/mad: Fix oopsable race on device removal

Fix an oopsable race debugged by Eli Cohen <eli@mellanox.co.il>:
After removing the port from port_list, ib_mad_port_close flushes
port_priv->wq before destroying the special QPs. This means that a
completion event could arrive, and queue a new work in this work queue
after flush.

This patch also removes an unnecessary flush_workqueue():
destroy_workqueue() already includes a flush.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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