From c8303e7f3f3093c16ef0fa5f73280637c89d4368 Mon Sep 17 00:00:00 2001
From: Indan Zupancic <indan@nul.nu>
Date: Wed, 12 Jan 2011 11:59:19 +0000
Subject: [PATCH] drm/i915/panel: The backlight is enabled if the current value
 is non-zero

... and not if the maximum is non-zero. This fixes the typo introduced
in 47356eb6728501452 and preserves the backlight value from boot.

[ickle: My thanks also to Indan Zupancic for diagnosing the original
        regression and suggesting the appropriate fix.]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org # after 47356eb6728501452
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