[Intel-gfx] [PATCH i-g-t] tests/kms_cursor_legacy: Remove strict vblank checking on 2x-*-vs-cursor tests.

[Maarten Lankhorst]

Op 18-10-17 om 12:47 schreef Chris Wilson:
> Quoting Maarten Lankhorst (2017-10-18 11:43:25)
>> There is no guarantee that on 2 screens the vblanks are in any way
>> synchronized, so it's best to stop checking them, since doing an update
>> involving multiple pipes may incur an arbitrary amount of delay.
> Ah, that's a shame. Not much point in asking 2 crtcs to be updated at
> the same time, if they aren't. (Give or take the lack of genlock, and
> lack of Ville's tricks to synchronise clocks in sw.)
> -Chris

Yeah it's a shame, but testing that we don't wipe out watermarks on the other pipe
with a cursor update on one of the pipes is still a good use of the test. :)

2x-cursor-vs-* still counts vblanks, so that part is not completely lost.