This reverts commit d33ef52d.

This change seems to expose a bug in the 3D driver tiggered by
certain apps, so revert it to keep userspace working.
Reported-by: NRafael J. Wysocki <rjw@sisk.pl>

Cc: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>