Messages in this thread | | | Date | Tue, 21 Jun 2011 21:23:09 +0200 | From | Marc Koschewski <> | Subject | Re: mei driver breaks suspend on 3.0git |
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* Winkler, Tomas <tomas.winkler@intel.com> [2011-06-21 22:07:27 +0300]:
Tomas,
what I was trying to say is that this might fix the suspend bug with 'mei', however, the box won't come up again even with 'mei' not playing anywhere.
suspend/resume is actually broken even if this fix might help suspending a machine with 'mei' usage.
Regards, Marc
> > > > -----Original Message----- > > From: Marc Koschewski [mailto:marc@osknowledge.org] > > Sent: Tuesday, June 21, 2011 9:40 PM > > To: Winkler, Tomas > > Cc: Arkadiusz Miskiewicz; Weil, Oren jer; linux-kernel@vger.kernel.org > > Subject: Re: mei driver breaks suspend on 3.0git > > > > * Winkler, Tomas <tomas.winkler@intel.com> [2011-06-12 22:41:59 +0300]: > > > > I suffer the same. After booting 3.0.0-r4 with that module not being loaded it > > suspends, however, it doesn't resume (screen black, hard power-off > > needed). > > The patch was already posted https://lkml.org/lkml/2011/6/13/148 but wasn't picked up for rc4 yet. > For now please apply it your by yourself. > > Greg, will you collect staging fixes for rc5 or shell it be picked up directly by Linus? > > Thanks > Tomas > > > Regards, > > Marc > > > > > > > > > > > > -----Original Message----- > > > > From: Arkadiusz Miskiewicz [mailto:a.miskiewicz@gmail.com] > > > > Sent: Sunday, June 12, 2011 9:40 PM > > > > To: Winkler, Tomas > > > > Cc: Weil, Oren jer; linux-kernel@vger.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, 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@vger.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"? > > > > > > > > I meant this one: > > > > > > > > ret = wait_event_interruptible_timeout(dev->wait_stop_wd, > > > > dev->wd_stopped, 10 * HZ); > > > > > > > > > > > > And that was possible untested solution that relies on wd being > > > > stopped and not anything else. > > > > > > > > > > > > > > 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; > > > > > > > > > > Looks like your patch is correct > > > wait_event_interruptible_timeout() returns >0 on success unlike > > > wait_even_interruptable() > > > > > > I wil check all the instances we have and issue a patch. > > > Thanks for your effort > > > Tomas > > > > > > --------------------------------------------------------------------- > > > Intel Israel (74) Limited > > > > > > This e-mail and any attachments may contain confidential material for > > > the sole use of the intended recipient(s). Any review or distribution > > > by others is strictly prohibited. If you are not the intended > > > recipient, please contact the sender and delete all copies. > > > > -- > > Marc Koschewski > --------------------------------------------------------------------- > Intel Israel (74) Limited > > This e-mail and any attachments may contain confidential material for > the sole use of the intended recipient(s). Any review or distribution > by others is strictly prohibited. If you are not the intended > recipient, please contact the sender and delete all copies. > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > >
-- Marc Koschewski
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