Commit 7e2f4a33 authored by Eric Anholt's avatar Eric Anholt Committed by popcornmix
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drm/vc4: Fix synchronization firmwarekms against GL rendering. 



We would present the framebuffer immediately without waiting for
rendering to finish first, resulting in stuttering and flickering as a
window was dragged around when the GPU was busy enough to not just win
the race.

Signed-off-by: default avatarEric Anholt <eric@anholt.net>
parent 81a2ca9d
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