Re: mei driver breaks suspend on 3.0git

From: Arkadiusz Miskiewicz
Date: Sun Jun 12 2011 - 14:38:47 EST


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@xxxxxxxxxxxxxxx
> > > 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 MiÅkiewicz PLD/Linux Team
arekm / maven.pl http://ftp.pld-linux.org/
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