> AcpiOsSleep()@Osd/OsdSchedule.c is called after disabling
> interrupts.  Can we rely on tsleep() in such situation?

i suspect that tsleep/wakeup will likely work, but will reenable
interrupts as a side effect..

For cases like this, the acpi code probably has to quiesce the helper
thread and then go into a "do it now, don't try to defer it to another
thread" mode.

						- Bill