linux-kernel - RE: Dell XPS13 does not suspend with Linux 4.10-rc3

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Date:   Wed, 11 Jan 2017 22:14:26 +0000
From:   "Winkler, Tomas" <tomas.winkler@...el.com>
To:     Paul Menzel <pmenzel@...gen.mpg.de>,
        Thorsten Leemhuis <linux@...mhuis.info>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jan Niehusmann <jan@...dor.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Daniel Blueman <daniel@...ra.org>,
        "Brown, Len" <len.brown@...el.com>,
        "Usyskin, Alexander" <alexander.usyskin@...el.com>
Subject: RE: Dell XPS13 does not suspend with Linux 4.10-rc3

> 
> On 01/11/17 10:49, Winkler, Tomas wrote:
> 
> >> Subject: Re: Dell XPS13 does not suspend with Linux 4.10-rc3
> >>
> >> On 01/11/17 10:36, Greg Kroah-Hartman wrote:
> >>> On Wed, Jan 11, 2017 at 09:53:38AM +0100, Paul Menzel wrote:
> >>
> >>>> On 01/10/17 23:24, Jan Niehusmann wrote:
> >>>>> On Tue, Jan 10, 2017 at 09:43:31PM +0100, Jan Niehusmann wrote:
> >>>>>> And I bisected the issue to commit 7279b238ba, "mei: send OS type
> >>>>>> to the FW"
> >>>>>
> >>>>> Indeed, just disabling the FIXUP implemented by that commit fixes
> >>>>> suspend for me, with 4.10.0-rc3. Btw, this is on a Thinkpad x201s.
> >>>>>
> >>>>> (For the addressees newly added to cc, it seems like the mentioned
> >>>>> commit breaks suspend to ram on Dell XPS13 and Thinkpad x201s)
> >>>>>
> >>>>> --- a/drivers/misc/mei/bus-fixup.c
> >>>>> +++ b/drivers/misc/mei/bus-fixup.c
> >>>>> @@ -406,3 +406,3 @@ static struct mei_fixup {
> >>>>>         MEI_FIXUP(MEI_UUID_WD, mei_wd),
> >>>>> -       MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix),
> >>>>> +//     MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix),
> >>>>>  };
> >>>>>
> >>>>>
> >>>>> I don't know what this may break, as the description of 7279b23
> >>>>> just
> >>>>> says:
> >>>>> "This workaround was added to support other broken OS and we need
> >>>>> to follow here."
> >>>>>
> >>>>> Unless there is a better justification, I think the commit should
> >>>>> be reverted, for now.
> >>>>
> >>>> Somebody else already created the bug 192051 in the Linux Kernel
> >>>> Bug Tracker [1].
> >>>
> >>> There's a fix for this in my tree to go to Linus for 4.10-rc4.
> >>
> >> Yes, Tomas referenced it in the bug report. I test it on the Dell
> >> XPS13
> >> (9360) now.
> 
> As written elsewhere, the issue on the Dell XPS13 seems to be a different issue.
> (No idea, which message I should have replied to.) I have to run, and won't
> have access to the machine until Monday, so here is as far as I got.
> 
> ```
> $ git bisect log
> git bisect start
> # good: [69973b830859bc6529a7a0468ba0d80ee5117826] Linux 4.9 git bisect
> good 69973b830859bc6529a7a0468ba0d80ee5117826
> # good: [69973b830859bc6529a7a0468ba0d80ee5117826] Linux 4.9 git bisect
> good 69973b830859bc6529a7a0468ba0d80ee5117826
> # bad: [a121103c922847ba5010819a3f250f1f7fc84ab8] Linux 4.10-rc3 git bisect
> bad a121103c922847ba5010819a3f250f1f7fc84ab8
> # bad: [72cca7baf4fba777b8ab770b902cf2e08941773f] Merge tag 'staging-
> 4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
> git bisect bad 72cca7baf4fba777b8ab770b902cf2e08941773f
> # good: [b8d2798f32785398fcd1c48ea80c0c6c5ab88537] Merge tag 'clk-for-
> linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
> git bisect good b8d2798f32785398fcd1c48ea80c0c6c5ab88537
> # good: [9439b3710df688d853eb6cb4851256f2c92b1797] Merge tag 'drm-for-
> v4.10' of git://people.freedesktop.org/~airlied/linux
> git bisect good 9439b3710df688d853eb6cb4851256f2c92b1797
> ```

Can you please hattach your .config as well
Thanks
Tomas