On Thu, May 29, 2014 at 2:03 AM, Dan Carpenter <dan.carpen...@oracle.com> wrote:
> On Wed, May 28, 2014 at 08:26:53PM -0400, Alex Deucher wrote:
>> On Wed, May 28, 2014 at 7:49 PM, Ken Moffat <zarniwh...@ntlworld.com> wrote:
>> > On Wed, May 28, 2014 at 06:25:21PM +0100, Ken Moffat wrote:
>> >> Hi Daniel,
>> >>
>> >
>> > [ correcting details, confirming that reverting this does fix the
>> > problem, adding Cc:s ]
>> >
>> >> I've only started full testing of 3.15 on one of my machines now
>> >> that -rc7 has been released (this one had two issues in the radeon
>> >> code, second was fixed in rc7). Unfortunately, suspend to RAM
>> >> (pm-suspend), or rather the wake-up, is broken on this box [ my
>> >> other two boxes are fine in rc7 ].
>> >>
>> >> Bisection identified one of your commits -
>> >>
>> >> commit 25f397a429dfa43f22c278d0119a60a343aa568f
>> >> Author: Daniel Vetter <daniel.vet...@ffwll.ch>
>> >> Date: Fri Jul 19 18:57:11 2013 +0200
>> >>
>> >> drm/crtc-helper: explicit DPMS on after modeset
>> >>
>> >> Atm the crtc helper implementation of set_config has really
>> >> inconsisten semantics: If just an fb update is good enough, dpms state
>> >> will be left as-is, but if we do a full modeset we force everything to
>> >> dpms on.
>> >>
>> >> This change has already been applied to the i915 modeset code in
>> >>
>> >> ('git show' stops at that point)
>> >
>> > update : I've no idea what was going on there, nor for the problem
>> > with attempting to revert it. I've now gone back into git,
>> > extracted the full commit to a file with 'git show', and then used
>> > git apply -R to revert it from 3.15-rc7. That version wakes up from
>> > suspend to RAM, 3.15-rc7 itself did not.
>> >
>> > Maybe I was still in git log when I thought I was on the command
>> > line. Anyway, snipping git's view of my failed attempt to revert
>> > it, and adding Dan and Alex who were CC'd on the commit.
>> >
>>
>> Duplicate of:
>> https://bugzilla.kernel.org/show_bug.cgi?id=74751
>> and also reported here:
>> https://lkml.org/lkml/2014/5/2/388
>> Unless there is a good reason to keep the commit, I'd say let's just revert
>> it.
>>
>
> Yes. Let's revert it.
The actual bad commit is 177cf92de4aa97ec1435987e91696ed8b5023130, but
for some reason git bisect always comes up with
25f397a429dfa43f22c278d0119a60a343aa568f which has been in the tree
for almost a year now. I don't know why.
Alex
>
> regards,
> dan carpenter
>
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