[Bug 90418] Front buffer tracker is not invalidating the fb obj for DRRS/PSR

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90418

--- Comment #6 from Ramalingam C <ramalingam.c at intel.com> ---
Thanks for the information Chris,

I did some experiemnts and found that intel_eDP_drrs_invalidate has to be added
to the intel_frontbuffer_flip_prepare.

With this on ubuntu Desktop environment eDP Idleness DRRS is working. But to
test the all corner case I am developing a IGT. In IGT environment DRRS not
updated in few situations. Have to divein further for more info.

For now I have submitted a patch to add the drrs_invalidate to the
frontbuffer_flip_prepare.

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