From 61d792562b53c610f9fe917f2bbc22218aa39c22 Mon Sep 17 00:00:00 2001
From: Alex Williamson <alex.williamson@redhat.com>
Date: Thu, 7 Aug 2014 11:12:04 -0600
Subject: [PATCH] vfio-pci: Use mutex around open, release, and remove

Serializing open/release allows us to fix a refcnt error if we fail
to enable the device and lets us prevent devices from being unbound
or opened, giving us an opportunity to do bus resets on release.  No
restriction added to serialize binding devices to vfio-pci while the
mutex is held though.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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