linux-kernel - Re: WARNING: at drivers/usb/host/ehci-hcd.c:287

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Date:	Tue, 4 Mar 2008 14:01:41 -0800
From:	David Brownell <david-b@...bell.net>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Christian Kujau <lists@...dbynature.de>,
	LKML <linux-kernel@...r.kernel.org>, 0x0007@...il.com,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: WARNING: at drivers/usb/host/ehci-hcd.c:287

On Tuesday 04 March 2008, Alan Stern wrote:

> > > How about replacing the
> > > 
> > >         WARN_ON(!ehci->reclaim);
> > 
> > Or bettter yet, just removing it entirely.  ISTR doing that in some
> > patches I've not yet sent for merging, and expect that's what my
> > preferred fix will be ...
> 
> But removing the WARN_ON won't fix the problem.

It fully resolves the $SUBJECT problem.  :)


> The routine still 
> needs to exit immediately if ehci->reclaim isn't set,

It more or less does that already; it does some avoidable
work, but that's not incorrect.


> the root hub isn't running, or the timer has been restarted.

Those are different issues.

- Dave
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