Re: [rft]power management for usbtouch

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On Sat, 28 Jun 2008, Oliver Neukum wrote:

> In hindsight adding that interface at all was an error. I was in favor
> of it and that was a mistake. Maybe it should be removed.
> Complicating good drivers for its sake I therefore consider an error.
> Possibly we should consider a forcible suspension a form of disconnection.

Are you suggesting that the "off" value in /sys/.../power/level 
shouldn't be allowed?  I don't see it that way -- there's no other 
mechanism for userspace to force a USB device into the low-power state.

Forcing a disconnection during suspend might be a good idea.  But if 
you do, is there any reason to consider manual suspension different 
from system sleep?

Alan Stern

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