linux-kernel - Re: [RFC/PATCH 1/5] usb: otg: add notifier support

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Message-ID: <20100126143005.GI10690@nokia.com>
Date:	Tue, 26 Jan 2010 16:30:05 +0200
From:	Felipe Balbi <felipe.balbi@...ia.com>
To:	ext Oliver Neukum <oliver@...kum.org>
Cc:	"Balbi Felipe (Nokia-D/Helsinki)" <felipe.balbi@...ia.com>,
	ext David Brownell <david-b@...bell.net>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Anton Vorontsov <avorontsov@...mvista.com>,
	Grazvydas Ignotas <notasas@...il.com>,
	Madhusudhan Chikkature <madhu.cr@...com>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [RFC/PATCH 1/5] usb: otg: add notifier support

On Tue, Jan 26, 2010 at 03:24:49PM +0100, ext Oliver Neukum wrote:
>Am Dienstag, 26. Januar 2010 15:14:43 schrieb Felipe Balbi:
>> >There are load bursting issues too.  All part of the USB spec;
>> >a load that's OK for 1 millisecond might not be OK for 1 second.
>>
>> if you get a SetConfiguration(config), then you can use that load for as
>> long as needed, the limitation is when not enumerated, afaict.
>
>And when suspended.

but when suspended, we have to cut power ASAP. If not enumerated we can 
still draw power for a few miliseconds due to dead battery provision.

-- 
balbi
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