drm/i915/overlay: Tidy update_pfit_vscale_ratio()

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2010-08-12 11:15:58 +01:00
commit 446d2183af