linux-kernel - Re: Critical regression in 4.7-rcX

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Date:	Fri, 15 Jul 2016 17:43:30 +0300
From:	Ville Syrjälä <ville.syrjala@...ux.intel.com>
To:	Daniel Vetter <daniel.vetter@...ll.ch>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Larry Finger <Larry.Finger@...inger.net>,
	LKML <linux-kernel@...r.kernel.org>,
	Shubhangi Shrivastava <shubhangi.shrivastava@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>
Subject: Re: Critical regression in 4.7-rcX

On Fri, Jul 15, 2016 at 04:27:27PM +0200, Daniel Vetter wrote:
> On Fri, Jul 15, 2016 at 8:55 AM, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
> > On Thu, 14 Jul 2016, Larry Finger wrote:
> >> To anyone keeping track of regressions in kernel 4.7, I call your attention to
> >> https://bugs.freedesktop.org/show_bug.cgi?id=96675.
> >>
> >> This bug causes driver i915 to fail to connect to the display, and results in
> >> a blank screen as soon as the kernel is loaded. The only way to operate with
> >> kernel 4.7 is to add "nomodeset" to the command line. The problem was bisected
> >> to commit f21a21983ef13a ("drm/i915: Splitting intel_dp_detect").
> >
> > Daniel? Jani? Time to revert?
> 
> Yup. Means that I'll get to revert a pile of patches (plus even more
> in -next), but that's what we get for not handling regressions timely.
> Dave poked me about the same bug already too. But will take a few days
> until the pull is in your inbox I guess.

I attached a oneliner to the bug today, that I *think* should fix the
problem.

-- 
Ville Syrjälä
Intel OTC