[igt-dev] [PATCH] tests/kms_cursor_legacy: Fix assertion failure due to vblank mismatch

[Chris Wilson]

Quoting Nischala Yelchuri (2019-03-13 20:16:35)
> For the !modeset case, after a pageflip is performed on both crtc's,
> vblank counter is advanced by 1 when compared to its original value.
> 
> For the modeset case, when pageflips and modesets are interleaved,
> vblank counter does not always advance by 1 as nonblocking modeset
> could fail, in which case we do not need vblank_matches.

Having acknowledged the bug, try fixing it.
-Chris