linux-kernel - Re: INTEL_MEI_ME=y breaks suspend on 3.10-rc3

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Message-ID: <CA+i0qc4eEDjygde4+frqd51JutTDeoJ8mTp-K==gwG_7ghJwcw@mail.gmail.com>
Date:	Mon, 3 Jun 2013 21:09:58 +0300
From:	Tomas Winkler <tomas.winkler@...el.com>
To:	Stefan Seyfried <stefan.seyfried@...glemail.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: INTEL_MEI_ME=y breaks suspend on 3.10-rc3

>
> > Or, to be more precise: it breaks resume.
> >
> > The machine seems to lock up hard after resume, then after a few seconds
> > it panics (caps lock blinking).
> >
> > Reproduced on ThinkPad X200s
> >
> > 00:03.0 0780: 8086:2a44 (rev 07)
> > Intel Corporation Mobile 4 Series Chipset MEI Controller
> >
> > Debugged with "init=/bin/bash no_console_suspend", I see lots of errors
> > from the mei_me driver, then finally the panic (some overflow maybe?).
> >
> > Unbinding the device before suspend fixes resume.
>
> I just noticed that I get the following message on unbinding:
>
> $ echo 0000:00:03.0 > /sys/bus/pci/drivers/mei_me/unbind
> $ dmesg|tail -2
> [ 1216.830034] mei_me 0000:00:03.0: stop
> [ 1216.837018] mei_me 0000:00:03.0: wait hw ready failed. status = 0x0
>
> not sure if this is related.
>
Thanks for the report I'm looking into it.

Thanks
Tomas
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