Am Donnerstag, 25. November 2010, 16:52:39 schrieb Alan Stern:
> When a device is declared irq-safe in this way, the PM core increments
> the parent's usage count, so the parent will never be runtime
> suspended. This prevents difficult situations in which an irq-safe
> device can't resume because it is forced to wait for its non-irq-safe
> parent.
Shouldn't you walk further up the tree if the parent itself is irq-safe?
It seems like a waste of power to not suspend a paren, that can be
woken in irq.
Regards
Oliver
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