From 3f20df98870236b288a90fc3b65f593d3db05b17 Mon Sep 17 00:00:00 2001
From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Date: Fri, 24 Oct 2014 14:51:34 +0100
Subject: [PATCH] drm/i915: only flip frontbuffer if crtc is active
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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>
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Reading git-format-patch failed