linux-kernel - Re: converting appletouch to usb autosuspend...

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Message-Id: <200705140750.40458.oliver@neukum.org>
Date:	Mon, 14 May 2007 07:50:39 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Alistair John Strachan <s0348365@....ed.ac.uk>
Cc:	Soeren Sonnenburg <kernel@....de>,
	linux-usb-devel@...ts.sourceforge.net,
	Linux Kernel <linux-kernel@...r.kernel.org>, maxk@...lcomm.com
Subject: Re: converting appletouch to usb autosuspend...

Am Montag, 14. Mai 2007 02:53 schrieb Alistair John Strachan:
> > What did you use instead of hci_usb then ? usbkbd ? This won't give you
> > the special keys etc...
> 
> Sorry, I wasn't clear. hci_usb is actually part of the BlueZ stack, it's got 
> nothing to do with the keyboard. I unloaded both appletouch AND hci_usb.

If you want large power savings from USB autosuspend, all
loaded drivers must support autosuspend. The HCD can suspend
only if all connected devices are suspended.
Are you willing to test patches for HID & the new last_busy based
usb core infrastructure?

	Regards
		Oliver
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