Re: i915 drm patches in LTS 4.4.x ?

["gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>]

On Tue, Jul 19, 2016 at 04:43:06PM +0000, Joakim Tjernlund wrote:
> On Tue, 2016-07-19 at 10:59 +0200, Willy Tarreau wrote:
> > On Tue, Jul 19, 2016 at 08:41:21AM +0000, Joakim Tjernlund wrote:
> > > 
> > > > 
> > > > Did you try it or at least the kernel which contains it ? It is important
> > > 
> > > No I haven't. I myself do not have such a laptop so I must find someone that does
> > > and willing to test stuff for me(I maintain our Linux DE used for in-house development)
> > > All I can say for sure is that 4.1.x works and 4.4.x does not :(
> > 
> > OK that's already a good indication.
> > 
> > (...)
> > > 
> > > Yes I get that but I figured that a upstream commit that is marked:
> > > �Cc: <stable@vger.kernel.org> # v4.2+
> > > already was approved for stable and it would find its way into all relevant branches.
> > 
> > Indeed it could be one candidate, so if you can afford to wait for a
> > next release to see if it fixes your problem that's the easiest way.
> > Otherwise you'll have to bisect either between 4.1 and 4.4 to find
> > which one broke, or to test mainline to see if it's fixed again. But
> > given that it was a regression, it's likely that someone else will
> > notice it and propose a fix (possibly the one above).
> >�
> 
> Yes, plenty of people have similar has a problem but Intel devs have had hard time
> finding the bugs.
> 
> Greg, could push your mail queue so I can compare with upstream?

I don't know what you mean by that, I'm not going to push my stable mbox
up publicly, sorry :)

> Seems like this patch has been lost though:
> �[PATCH stable-4.4] drm/i915: Update CDCLK_FREQ register on BDW after changing cdclk frequency

Not lost, still in my todo queue, along with 663 other patches I need to
review/apply...

thanks,

greg k-h