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由 Jung-uk Kim 提交于
Check for any errors. Handles possible timeout case if ACPI_WAIT_FOREVER is changed to be less than "forever". Jung-uk Kim. Signed-off-by: NJung-uk Kim <jkim@FreeBSD.org> Signed-off-by: NBob Moore <robert.moore@intel.com> Signed-off-by: NLv Zheng <lv.zheng@intel.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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