Re: Disk spin-up optimization during system resume

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On 1/21/2014 11:03 AM, Alan Stern wrote:
> However, there is a compromise.  The user gets to select the 
> autosuspend delay.  If that delay is set to a very large value, it
> will effectively prevent autosuspends from occurring, without
> causing an already-suspended device to resume right away.  (On the
> other hand, it would not prevent a lazy resume.)

Right, so why can't you set the delay to -1 without waking the already
sleeping drive up?  There are separate sysfs knobs for the delay and
whether or not it is enabled, yet the kernel seems to couple the two
together.



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