From 7c9197791a0cbbbb0f74aade3339f8e5890fbd15 Mon Sep 17 00:00:00 2001
From: Jiang Liu <jiang.liu@linux.intel.com>
Date: Mon, 6 Jan 2014 14:18:18 +0800
Subject: [PATCH] iommu/vt-d, trivial: simplify code with existing macros

Simplify vt-d related code with existing macros and introduce a new
macro for_each_active_drhd_unit() to enumerate all active DRHD unit.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
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