linux-kernel - Re: [PATCH RFC] USB: Add HCD fastboot

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Message-ID: <20080806131729.6384550c@infradead.org>
Date:	Wed, 6 Aug 2008 13:17:29 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Simon Arlott <simon@...e.lp0.eu>,
	Rene Herman <rene.herman@...access.nl>,
	<linux-kernel@...r.kernel.org>, <mingo@...e.hu>,
	Daniel Walker <dwalker@...sta.com>,
	USB list <linux-usb@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCH RFC] USB: Add HCD fastboot

On Wed, 6 Aug 2008 16:09:21 -0400 (EDT)
Alan Stern <stern@...land.harvard.edu> wrote:

> On Wed, 6 Aug 2008, Arjan van de Ven wrote:
> 
> > On Wed, 6 Aug 2008 15:49:27 -0400 (EDT)
> > Alan Stern <stern@...land.harvard.edu> wrote:
> > 
> > > On Wed, 6 Aug 2008, Simon Arlott wrote:
> > > 
> > > > > Wouldn't it be much simpler, and less objectionable, to do
> > > > > what I suggested earlier?  That is, add a 5-second delay at
> > > > > the start of hub_thread() in drivers/usb/core/hub.c.  No
> > > > > messing with Makefiles, no changes to the initcall scheduling.
> > > > 
> > > > Aside from 5 seconds being too long, and anything less being a
> > > > race between hub_thread() and driver initcalls, it doesn't
> > > > improve anything because it'll still have to wait for the
> > > > devices to finish initialising in userspace instead.
> > > 
> > > Why is 5 seconds too long?  Too long for what?
> > 
> > because I'm done booting to full UI in that time.
> > 
> > it's forever.
> 
> This doesn't answer my question.  Why does the fact that you're
> already in the UI after 5 seconds mean that 5 seconds is too long to
> delay the start of khubd?


because it means that while the rest of boot is done and the system
idle, the mouse and keyboard aren't going to work.

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