linux-kernel - Re: [PATCH] USB: Only enable autosuspend by default on certain device classes

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Message-ID: <20070803151037.GD19968@srcf.ucam.org>
Date:	Fri, 3 Aug 2007 16:10:37 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	David Brownell <david-b@...bell.net>,
	Rogan Dawes <lists@...es.za.net>,
	Oliver Neukum <oliver@...kum.org>, Greg KH <gregkh@...e.de>,
	linux-usb-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: Only enable autosuspend by   default on certain device classes

On Fri, Aug 03, 2007 at 10:41:13AM -0400, Alan Stern wrote:
> On Fri, 3 Aug 2007, Matthew Garrett wrote:
> > I'm not so 
> > enthusiastic about the "Increase the timeout case" - it doesn't avoid 
> > any races, just makes them less likely. USB is likely to get loaded in 
> > the initramfs, but we may not have a full set of udev rules until the 
> > root fs is up and that can take an effectively arbitrarily large amount 
> > of time.
> 
> If it takes longer than 15 minutes, something is wrong.  At that point 
> the user will have worse things to worry about than whether some USB 
> devices got suspended.

Imagine cases where / is fscked from initramfs?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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