Comment # 9 on bug 71930 from Mike Lothian

I bisected back to [bbd34fcdd1b201e996235731a7c98fd5197d9e51] ACPI / hotplug /
PCI: Register all devices under the given bridge

Which was during the 3.11 cycle I believe - I guess there's a chance I picked
up on a previous bug I'll do some more testing