Date: Wed, 27 Oct 2010 10:50:56 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-current@freebsd.org Cc: acpi@freebsd.org, Alexander Motin <mav@freebsd.org>, current@freebsd.org, Nate Lawson <nate@root.org> Subject: Re: Event based scheduling and USB. Message-ID: <201010271050.56141.hselasky@c2i.net> In-Reply-To: <4CC7DF5A.6070904@FreeBSD.org> References: <201010261904.o9QJ4iwq089834@sana.init-main.com> <4CC759D5.2020207@root.org> <4CC7DF5A.6070904@FreeBSD.org>
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On Wednesday 27 October 2010 10:14:18 Alexander Motin wrote: > As I understand, if respective USB port is not used, USB stack should > put it into power_save mode not poll so often to deny entering C3 state. USB will stop the hardware from polling RAM, but still a 4 second root HUB software timer/watchdog will be running. --HPS
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