From d9d820810d4eeac336c515dfb62561c21b296f07 Mon Sep 17 00:00:00 2001
From: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Thu, 27 Feb 2014 16:30:56 -0300
Subject: [PATCH] drm/i915: fix assert_cursor on BDW
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We need to read the correct register, not a register that doesn't exist
and will trigger "Unclaimed register" messages when we touch it.

Also rearrange the checks in an attempt to prevent this error from
happening again.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[Jani: dropped an extra empty line introduced.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Reading git-format-patch failed