[3.19.y-ckt stable] Patch "drm/i915: apply the PCI_D0/D3 hibernation workaround everywhere on pre GEN6" has been added to staging queue

[Pavel Machek]

On Tue 2015-10-20 09:46:19, Jani Nikula wrote:
> On Tue, 20 Oct 2015, Pavel Machek <pavel at ucw.cz> wrote:
> > On Mon 2015-10-19 15:39:48, Kamal Mostafa wrote:
> >> This is a note to let you know that I have just added a patch titled
> >> 
> >>     drm/i915: apply the PCI_D0/D3 hibernation workaround everywhere on pre GEN6
> >> 
> >> to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree 
> >> which can be found at:
> >> 
> >>     http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
> >> 
> >> This patch is scheduled to be released in version 3.19.8-ckt8.
> >> 
> >> If you, or anyone else, feels it should not be added to this tree, please 
> >> reply to this email.
> >
> > As this says:
> >
> >> commit da2bc1b9db3351addd293e5b82757efe1f77ed1d
> >> Author: Imre Deak <imre.deak at intel.com>
> >> Date:   Thu Oct 23 19:23:26 2014 +0300
> >> 
> >>     drm/i915: add poweroff_late handler
> >> 
> >> introduced a regression on old platforms during hibernation. A workaround was
> >> added in
> >
> > commit da2bc introduced a regression, and it should be simply
> > reverted, attempts to "fix" it may be suitable for -mainline, but not
> > for stable.
> >
> > Just revert it. It does not provide any real benefit, anyway.
> 
> This is not how stable works. If you have problems with current
> upstream, please report them upstream.

I don't know about problem with the current upstream.

But for stable, best solution is to just revert da2bc, rather than try
luck with fixing it.
									Pavel
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