Re: [PATCH 0/5] Fix deadlock on runtime suspend in DRM drivers

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On Wed, Feb 14, 2018 at 03:43:56PM +0100, Michel Dänzer wrote:
> On 2018-02-14 03:08 PM, Sean Paul wrote:
> > On Wed, Feb 14, 2018 at 10:26:35AM +0100, Maarten Lankhorst wrote:
> >> Op 14-02-18 om 09:46 schreef Lukas Wunner:
> >>> Dear drm-misc maintainers,
> >>>
> >>> On Sun, Feb 11, 2018 at 10:38:28AM +0100, Lukas Wunner wrote:
> >>>> Fix a deadlock on hybrid graphics laptops that's been present since 2013:
> >>> This series has been reviewed, consent has been expressed by the most
> >>> interested parties, patch [1/5] which touches files outside drivers/gpu
> >>> has been acked and I've just out a v2 addressing the only objection
> >>> raised.  My plan is thus to wait another two days for comments and,
> >>> barring further objections, push to drm-misc this weekend.
> >>>
> >>> However I'm struggling with the decision whether to push to next or
> >>> fixes.  The series is marked for stable, however the number of
> >>> affected machines is limited and for an issue that's been present
> >>> for 5 years it probably doesn't matter if it soaks another two months
> >>> in linux-next befor it gets backported.  Hence I tend to err on the
> >>> side of caution and push to next, however a case could be made that
> >>> fixes is more appropriate.
> >>>
> >>> I'm lacking experience making such decisions and would be interested
> >>> to learn how you'd handle this.
> >>>
> >>> Thanks,
> >>>
> >>> Lukas
> >>
> >> I would say fixes, it doesn't look particularly scary. :)
> > 
> > Agreed. If it's good enough for stable, it's good enough for -fixes!
> 
> It's not that simple, is it? Fast-tracking patches (some of which appear
> to be untested) to stable without an immediate cause for urgency seems
> risky to me.
> 

/me should be more careful what he says

Given where we are in the release cycle, it's barely a fast track. If these go
in -fixes, they'll get in -rc2 and will have plenty of time to bake. If we were
at rc5, it might be a different story.

Sean

> 
> -- 
> Earthling Michel Dänzer               |               http://www.amd.com
> Libre software enthusiast             |             Mesa and X developer

-- 
Sean Paul, Software Engineer, Google / Chromium OS
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