On 11/03/2014 06:27 PM, Thierry Reding wrote:
From: Thierry Reding <treding@xxxxxxxxxx>
When the CRTC is enabled, make sure the VBLANK machinery is enabled.
Failure to do so will cause drm_vblank_get() to not enable the VBLANK on
the CRTC and VBLANK-synchronized page-flips won't work.
While at it, get rid of the legacy drm_vblank_pre_modeset() and
drm_vblank_post_modeset() calls that are replaced by drm_vblank_on()
and drm_vblank_off().
Reported-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
Tested-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
I also think this patch should go for 3.18 since even kmscube won't work
without it.
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