linux-kernel - Re: mei driver breaks suspend on 3.0git

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Message-Id: <201106122038.36623.a.miskiewicz@gmail.com>
Date:	Sun, 12 Jun 2011 20:38:36 +0200
From:	Arkadiusz Miskiewicz <a.miskiewicz@...il.com>
To:	"Winkler, Tomas" <tomas.winkler@...el.com>
Cc:	"Weil, Oren jer" <oren.jer.weil@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: mei driver breaks suspend on 3.0git

On Sunday 12 of June 2011, Arkadiusz Miskiewicz wrote:
> On Sunday 12 of June 2011, Winkler, Tomas wrote:
> > > -----Original Message-----
> > > From: Weil, Oren jer
> > > Sent: Sunday, June 12, 2011 8:36 PM
> > > To: Arkadiusz Miskiewicz
> > > Cc: Winkler, Tomas; linux-kernel@...r.kernel.org
> > > Subject: RE: mei driver breaks suspend on 3.0git
> > > 
> > > >It's thinkpad t400 with
> > > >00:03.0 Communication controller [0780]: Intel Corporation Mobile 4
> > > >Series Chipset MEI Controller [8086:2a44] (rev 07)
> > > 
> > > Can you send us more details? Does it happened in stress? How do I
> > > reproduce
> > > it?
> 
> No stress. This is my daily use notebook and I simply suspend to ram when
> sitting under X in kde4.
> 
> > > Can you send us the debug prints?
> 
> Attached. suspend starts, tries to resume devices, MEI suspend fails
> causing whole suspend to be aborted.

Shouldn't ret > 0 in mei_wd_stop to be "success"?

Untested.

diff --git a/drivers/staging/mei/wd.c b/drivers/staging/mei/wd.c
index 2564b03..608245a 100644
--- a/drivers/staging/mei/wd.c
+++ b/drivers/staging/mei/wd.c
@@ -171,8 +171,10 @@ int mei_wd_stop(struct mei_device *dev, bool preserve)
        mutex_lock(&dev->device_lock);
        if (!dev->wd_stopped)
                dev_dbg(&dev->pdev->dev, "stop wd failed to complete.\n");
-       else
+       else {
+               ret = 0;
                dev_dbg(&dev->pdev->dev, "stop wd complete.\n");
+       }

        if (preserve)
                dev->wd_timeout = wd_timeout;

-- 
Arkadiusz Miśkiewicz        PLD/Linux Team
arekm / maven.pl            http://ftp.pld-linux.org/
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