From c11e928360777be8eaf5023032e9b6c62eb2c43e Mon Sep 17 00:00:00 2001
From: Damien Lespiau <damien.lespiau@intel.com>
Date: Wed, 25 Sep 2013 16:45:30 +0100
Subject: [PATCH] drm: Factor out common CRTC viewport checking code
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Both setcrtc and page_flip are checking that the framebuffer is big
enough for the defined crtc viewport (x, y, hdisplay, vdisplay). Factor
that code out in a single function.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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