[Bug 110886] After S3 resume, kernel: [drm] psp command failed and response status is (-65529) at 27th time of S3. 28th time of S3 freeze the system.

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Comment # 21 on bug 110886 from
In fact please rebase latest drm-next from here -
https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next, there
are 2 changes by Alex in communication with PSP with might help 

drm/amdgpu/psp: invalidate the hdp read cache before reading the psp response   
drm/amdgpu/psp: flush HDP write fifo after submitting cmds to the psp  

See if the PSP errors go away with that.


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