linux-kernel - RE: Regression on Dell XPS13 (was: [char-misc for 4.10-rc4 V2] mei: bus: enable OS version only for SPT and newer)

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Date:   Fri, 20 Jan 2017 23:11:45 +0000
From:   <Mario.Limonciello@...l.com>
To:     <gregkh@...uxfoundation.org>
CC:     <dvhart@...radead.org>, <rafael.j.wysocki@...el.com>,
        <pmenzel@...gen.mpg.de>, <linux@...mhuis.info>,
        <tomas.winkler@...el.com>, <jan@...dor.com>,
        <alexander.usyskin@...el.com>, <linux-kernel@...r.kernel.org>,
        <yu.c.chen@...el.com>, <tomi.p.sarvela@...el.com>,
        <daniel@...ra.org>, <len.brown@...el.com>,
        <linux-pm@...r.kernel.org>
Subject: RE: Regression on Dell XPS13 (was: [char-misc for 4.10-rc4 V2] mei:
 bus: enable OS version only for SPT and newer)

Greg,

> -----Original Message-----
> From: Darren Hart [mailto:dvhart@...radead.org]
> Sent: Tuesday, January 17, 2017 5:34 PM
> To: Limonciello, Mario <Mario_Limonciello@...l.com>
> Cc: gregkh@...uxfoundation.org; rafael.j.wysocki@...el.com;
> pmenzel@...gen.mpg.de; linux@...mhuis.info; tomas.winkler@...el.com;
> jan@...dor.com; alexander.usyskin@...el.com; linux-kernel@...r.kernel.org;
> yu.c.chen@...el.com; tomi.p.sarvela@...el.com; daniel@...ra.org;
> len.brown@...el.com; linux-pm@...r.kernel.org
> Subject: Re: Regression on Dell XPS13 (was: [char-misc for 4.10-rc4 V2] mei:
> bus: enable OS version only for SPT and newer)
> 
> On Tue, Jan 17, 2017 at 06:38:43PM +0000, Mario.Limonciello@...l.com
> wrote:
> > > -----Original Message-----
> > > From: Greg KH [mailto:gregkh@...uxfoundation.org]
> > > Sent: Tuesday, January 17, 2017 12:24 PM
> > > To: Limonciello, Mario <Mario_Limonciello@...l.com>
> > > Cc: pmenzel@...gen.mpg.de; rafael.j.wysocki@...el.com;
> > > linux@...mhuis.info; tomas.winkler@...el.com; jan@...dor.com;
> > > alexander.usyskin@...el.com; linux-kernel@...r.kernel.org;
> > > yu.c.chen@...el.com; tomi.p.sarvela@...el.com; daniel@...ra.org;
> > > len.brown@...el.com; linux-pm@...r.kernel.org
> > > Subject: Re: Regression on Dell XPS13 (was: [char-misc for 4.10-rc4 V2] mei:
> > > bus: enable OS version only for SPT and newer)
> > >
> > > On Tue, Jan 17, 2017 at 04:57:49PM +0000, Mario.Limonciello@...l.com
> > > wrote:
> > > > So in the <6s scenario, the intel-hid driver is responsible to
> > > > receive the ACPI event and process accordingly.  The maintainer
> > > > has a patch ready for the intel-hid portion of this work, but it's
> > > > currently being reviewed by Intel to ensure it can be legally submitted
> into the kernel.
> > >
> > > Who at Intel do I need to go kick to make this mythical legal review
> > > happen faster so we can see the code?
> > >
> > > Len and Rafael, what is going on here?
> > >
> >
> > Len and Darren are both in the loop on the discussion around this patch.
> > I don't know if they'll have any (public) comments they can add on the
> > matter yet however.
> 
> Thanks Mario. Yes, there isn't much to say here in public other than to confirm
> we are keenly aware of the problem and have been actively working on fixing
> it, both for this instance, and the deeper systematic failure that resulted in this
> situation. No amount of kicking will expedite the process at this point, but
> should we feel the need, we'll reach out.
> 

The approval has come through and the patch has been submitted.
http://www.spinics.net/lists/platform-driver-x86/msg10286.html

Note: this is only half of the fix, the second half needs the ACPI subsystem to
not be frozen to be able to receive this event.