Subject: Re: USB power usage during startup
To: None <source-changes@NetBSD.org>
From: Jared D. McNeill <jmcneill@invisible.ca>
List: source-changes
Date: 01/25/2008 07:30:22
Bernd Ernesti wrote:
> On Fri, Jan 25, 2008 at 12:29:12AM +0000, Jared D. McNeill wrote:
>> Module Name:	src
>> Committed By:	jmcneill
>> Date:		Fri Jan 25 00:29:12 UTC 2008
>>
>> Modified Files:
>> 	src/sys/dev/usb: uhub.c
>>
>> Log Message:
>> Speed up uhub attachment considerably. Rather than powering up each port
>> individually then waiting for it to become stable, power them up all
>> at once and then delay. Don't even bother delaying if we are a root hub,
>> as this is handled separately in the event thread. From OpenBSD.
> 
> Hmm, how much power does this consume if you have more then one usb device
> which needs a lot of power during startup?

I'm not sure if I follow -- it should be no different than before. Is it 
causing issues for you?

Cheers,
Jared