From: Anish Bhatt <anish@chelsio.com>
Date: Wed, 20 Aug 2014 20:44:06 +0000 (-0700)
Subject: cxgb4: Fix race condition in cleanup
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~24^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29aaee65bc28cc75281dc9fe0998cc5e10ac37f9;p=pandora-kernel.git

cxgb4: Fix race condition in cleanup

There is a possible race condition when we unregister the PCI Driver and then
flush/destroy the global "workq". This could lead to situations where there
are tasks on the Work Queue with references to now deleted adapter data
structures. Instead, have per-adapter Work Queues which were instantiated and
torn down in init_one() and remove_one(), respectively.

v2: Remove unnecessary call to flush_workqueue() before destroy_workqueue()

Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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