[Bug 76152] [IVB/HSW/BDW bisected]WARNING: CPU: 3 PID: 4178 at drivers/gpu/drm/i915/intel_pm.c:5570 check_power_well_state+0x69/0x6f [i915]() after resume form S3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76152

Guo Jinxian <jinxianx.guo at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #6 from Guo Jinxian <jinxianx.guo at intel.com> ---
(In reply to comment #5)
> Created attachment 96038 [details] [review]
> move the i915 resume handling before audio resume
> 
> (In reply to comment #4)
> > Created attachment 95912 [details]
> > dmesg
> > 
> > The patch unable to boot, there shows many Call Trace errors during booting.
> > please check the attached dmesg for details. thanks.
> 
> That was due to another bug fixed now by:
> 
> commit 05efeebd2838f0dedf765179244a7fb543fdca8a
> Author: Daniel Vetter <daniel.vetter at ffwll.ch>
> Date:   Tue Mar 18 16:26:25 2014 +0100
> 
>     drm/i915: Fix up the forcewake timer initialization
> 
> I also found that the fix I attached didn't do a proper resume of the i915
> device, it left the pci device itself disabled.
> 
> I attached a new fix and it should get rid of the warning in this bug
> report. Could you give it a try? Note that there can be other independent
> warnings that you see even after applying this patch. The ones you see both
> before and after the fix is applied should be handled separately from this
> bugzilla ticket.

this patch had merged into latest next-queued
branch(4726e0b045b80c514377da35ca01467ef6a4de53), this CallTrace unable to
reproduce, bug another CallTrace still exist.
"WARNING: CPU: 0 PID: 1417 at drivers/gpu/drm/drm_modes.c:119
drm_mode_probed_add+0x27/0x41 [drm]()"

And here has some other CallTraces after booting. please check dmesg in
attachment for details.

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