drm/i915: only flip frontbuffer if crtc is active

There is no point in flipping a buffer for a disabled crtc.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Gustavo Padovan 2014-10-24 14:51:34 +01:00 • committed by Daniel Vetter
commit 3f20df9887