From 7a3bb55ebd1cb04f08dd68cf60af24b434f8cc2a Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Fri, 10 Jan 2014 15:23:14 +0100
Subject: [PATCH] ACPI / PCI: Use global PCI rescan-remove locking in PCI root
 hotplug

Multiple race conditions are possible between the addition and removal of
PCI devices during ACPI PCI host bridge hotplug and the generic PCI bus
rescan and device removal that can be triggered via sysfs.

To avoid those race conditions make the ACPI PCI host bridge addition and
removal code use global PCI rescan-remove locking.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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