> >>> For hard disk runtime power off, Is there (hardware?) requirement for > > hard > >>> drive to support similar feature? > >> > >> No requirement for hard drive, as it does not need to remote wake up > >> itself while powered off. > >> > >> Please note that there is a v7 sent yesterday, you may want to take a > >> look at that instead of v6. > >> > >> And the runtime power off of hard drive is dropped from that patch set, > >> I'll submit it in another patch set(pretty small changes needed). > >> > >> Thanks, > >> Aaron > > [Jack Wang] Thanks Aaron for quick replay, for disk runtime power off, will > > it a different proach from block runtime power management patch set from > > Lin Ming? > > I suppose you mean the "block layer runtime pm" from Lin Ming? > No, they are different things. > > That patch set introduced a mechanism to decide when a device can enter > runtime suspend based on block layer request, while my patch cares about > when it is runtime suspended, how to remove its power. > > Thanks, > Aaron [Jack Wang] Thanks, but I still not get how to remove hard disk power? Through acpi? But libata acpi not cover scsi disk right? Sorry if my question is too stupid. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
