linux-kernel - Re: Linux 3.10-rc7

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Date:	Tue, 25 Jun 2013 23:57:04 +0300
From:	Tomas Winkler <tomas.winkler@...el.com>
To:	Shuah Khan <shuah.kh@...sung.com>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Chris Wilson <chris@...is-wilson.co.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"shuahkhan@...il.com" <shuahkhan@...il.com>,
	Dave Airlie <airlied@...hat.com>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>
Subject: Re: Linux 3.10-rc7

On Tue, Jun 25, 2013 at 11:51 PM, Shuah Khan <shuah.kh@...sung.com> wrote:
>
> On 06/25/2013 02:06 PM, Jesse Barnes wrote:
> > On Tue, 25 Jun 2013 19:59:28 +0000
> > Shuah Khan <shuah.kh@...sung.com> wrote:
> >
> >> On 06/25/2013 01:52 PM, Jesse Barnes wrote:
> >>> On Tue, 25 Jun 2013 21:37:37 +0200
> >>> Daniel Vetter <daniel.vetter@...ll.ch> wrote:
> >>>
> >>
> >>>>
> >>>> Adding more lists to cc + Jesse since he's the guilty one for the
> >>>> vt-switchless state restore stuff.
> >>>
> >>> Yeah, looks like we don't fetch the PLL state on resume from
> >>> hibernate,
> >>> leading to this warning.  The refcount is nonzero, indicating the pll
> >>> is in use, but the active field is clear, which means we're missing an
> >>> update somewhere.
> >>>
> >>> Shuah, just to confirm, does your resume actually work ok aside from
> >>> the warning?  I *think* it's harmless in this case, but does indicate
> >>> a
> >>> real bug in our state tracking... trying to come up with a patch now.
> >>>
> >>> Thanks,
> >>>
> >>
> >> Resume works just fine. I see it take longer for it to suspend compared
> >> to 3.9.7 and then resumes just fine. Suspend taking longer very well
> >> could be because of this warn_on. Other than this warn_on I haven't
> >> noticed any other problems.
> >
> > Here's the patch I'm testing now, can you give it a try?
> >
>
> Jesse,
>
> With this patch warn_on went away. Resume worked. I started seeing:
>
> [   78.733062] mei_me 0000:00:16.0: unexpected reset: dev_state =
> RESETTING
> [   78.733079] mei_me 0000:00:16.0: reset: wrong host start response
> [   78.733082] mei_me 0000:00:16.0: unexpected reset: dev_state =
> RESETTING
>
> over and over again after resume from reboot mode suspend. dmesg filled
> up with these messages.

Can you please send me the log part when this starts?

Thanks

> I did suspend to disk shutdown mode right away. Resume worked, no
> warn_ons, and no mei_me messages.
>
> -- Shuah
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