linux-kernel - Re: regression: a0d4922 causes PCI host constroller problems

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Date:	Fri, 16 Jan 2009 13:06:09 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Simon Holm Thøgersen <odie@...aau.dk>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	"Greg Kroah-Hartman" <gregkh@...e.de>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org
Subject: Re: regression: a0d4922 causes PCI host constroller problems

On Friday 16 January 2009, Simon Holm Thøgersen wrote:
> fre, 16 01 2009 kl. 09:05 +0100, skrev Simon Holm Thøgersen:
> > commit a0d4922 ("USB: fix up suspend and resume for PCI host
> > controllers") causes a lot of these two lines to be logged:
> > 
> > uhci_hcd 0000:00:1d.2: host system error, PCI problems?
> > uhci_hcd 0000:00:1d.2: host controller process error, something bad
> > happened!
> > 
> > Normally they appear on resume after suspend to disk, but sometimes I'm
> > not even sure I had to suspend to disk to see them. Also, it seems like
> > they don't trigger if X has not been started, or at least they are much
> > less likely to.
> > 
> > Reverting the patch restores normal operation.
> > 
> > No USB devices were attached BTW.
> 
> So this one has already been reported [1]. There was some mentioning of
> a patch to try out instead of reverting, but I couldn't find it.
> 
> Rafael, did you have something else to suggest or can we please get a
> revert of this one upstream asap before too many are wasting their time
> on this one?

Yes, please try the patch from http://lkml.org/lkml/2009/1/13/144 and report
back.

Thanks,
Rafael
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