exa/tegra_stream: increment syncpoint after each HW operation trigger

grate-driver / xf86-video-opentegra

X.Org video driver for NVIDIA Tegra

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exa/tegra_stream: increment syncpoint after each HW operation trigger #25

Closed digetx closed 7 years ago

digetx commented 7 years ago

Arto Merilainen of NVIDIA confirmed that we should increment syncpoint after each HW trigger because it might be not safe to adjust registers while operation hasn't completed yet, let's do it.

digetx commented 7 years ago

Some time ago Arto mentioned on IRC that multiple syncpoint increments may cause premature increment, so maybe this patch is not valid after all. I haven't noticed any problems yet, but we need to keep it in mind.