linux-kernel - Re: [linux-usb-devel] 2.6.20-rc4: usb somehow broken

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Date:	Mon, 15 Jan 2007 12:10:49 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	icxcnika@....tar.cc, linux-usb-devel@...ts.sourceforge.net,
	Alan Stern <stern@...land.harvard.edu>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [linux-usb-devel] 2.6.20-rc4: usb somehow broken

Am Sonntag, 14. Januar 2007 20:47 schrieb icxcnika@....tar.cc:
> > Can anyone suggest another approach?
> >
> > Alan Stern
> 
> Just a thought, you could use both a blacklist approach, and a module 
> paramater, or something in sysfs, to allow specifying devices that won't 
> be suspend and resume compatible.

Upon further thought, a module parameter won't do as the problem
will arise without a driver loaded. A sysfs parameter turns the whole
affair into a race condition. Will you set the guard parameter before the
autosuspend logic strikes?
Unfortunately this leaves only the least attractive solution.

	Regards
		Oliver
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