acpiphp: Execute ACPI _REG method for hotadded devices
Per ACPI spec, _ERG method should be executed before device driver gets control for hotpluged device. Firmware might do some configuration there. See http://bugzilla.kernel.org/show_bug.cgi?id=10805. In this machine, _REG method of docked device will configure cardbus bridge. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Tested-by: Paul Martin <pm@debian.org> Signed-off-by: Len Brown <len.brown@intel.com>
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