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 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html