[Bug 191571] AMD APU R4 hangs during hibernation - regression

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=191571

--- Comment #5 from Przemek <tem_pos at o2.pl> ---
I can confirm that this commit is makeing problems on A6 6310 APU.

I have compiled kernel 4.9 with reversed patch
[274ad65c9d02bdcbee9bae045517864c3521d530] and I can hibernate without
problems.

Moreover I have checked UVD hardware acceleration of h264 codec in mplayer's
vdpau option and it is working correctly. I have an accelerated playback with
ffmpeg12vdpau codec after resume from hibernate.

So maby forcing A6 GPU - r4 Mullins/Beema to hard reset when wakeing up from
hibernate state isn't necessarily mandatory.

I am also wondering, (cause of the experimentary support of CIK GPU's in amdgpu
driver as in the future GPU's from Sea Island and Southern Island families
support would be implemented in amdgpu) if there is similar patch commited to
amdgpu and if so I am aware that it could also affect the hibernate process on
A6 6310 APU.

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