From: Damien Lespiau <damien.lespiau@intel.com>
Date: Thu, 4 Sep 2014 11:27:23 +0000 (+0100)
Subject: drm/i915: Rewrite ABS_DIFF() in a safer manner
X-Git-Tag: fixes-against-v3.18-rc2~73^2~32^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2789339044fb6dfbee0c8cd77e26438b80e333ee;p=pandora-kernel.git

drm/i915: Rewrite ABS_DIFF() in a safer manner

The new version of the macro does a few things better:
  - protect the arguments,
  - only evaluate the arguments once,
  - check that the arguments are of the same type,

Change LC_FREQ_2K to be a unsigned 64bit constant and removed the '()'
from the caller as a result.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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