[REGRESSION][4.9-rc3 w/ drm-next-4.10-wip][CIK] Mobile Bonaire - Hang on hibernation

[REGRESSION][4.9-rc3 w/ drm-next-4.10-wip][CIK] Mobile Bonaire - Hang on hibernation

[Shawn Starr]

Looks like recent changes somewhere broke hibernation for me, i'll have to 
bisect to see which patch did so.

Thanks,
Shawn
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[REGRESSION][drm-next-4.10-wip][CIK] Mobile Bonaire - Hangs on hibernation commmit 86f8c599b09c916f9aad30563271440dbd79213a

[Shawn Starr]

On Monday, October 31, 2016 1:56:27 AM EST Shawn Starr wrote:
> Looks like recent changes somewhere broke hibernation for me, i'll have to
> bisect to see which patch did so.
> 
> Thanks,
> Shawn

Hello AMD Folks,

I did find the regression:

https://bugs.freedesktop.org/show_bug.cgi?id=98513

While it seems counterintuitive, reverting commit 
86f8c599b09c916f9aad30563271440dbd79213a allows me to hibernate.

I typically use hibernate and reboot, vs hibernate and power off, unless this 
somehow differs.

This bug is still happens in linux 4.9-rc7 and in drm-next-4.10-wip branches.

Anyone from AMD might be able to understand why this code breaks on a mobile 
CIK part?

Thanks,
Shawn

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