From: Michael S. Tsirkin <mst@mellanox.co.il>
Date: Mon, 20 Mar 2006 18:08:25 +0000 (-0800)
Subject: IB/mad: Fix oopsable race on device removal
X-Git-Tag: v2.6.17-rc1~1180^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dc05980dd736bfbe5b2524b463e5f098e67a64e9;p=pandora-kernel.git

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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