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>
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 1a60dd6..eccb0c0 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -53,6 +53,10 @@
#define for_each_drhd_unit(drhd) \
list_for_each_entry(drhd, &dmar_drhd_units, list)
+#define for_each_active_drhd_unit(drhd) \
+ list_for_each_entry(drhd, &dmar_drhd_units, list) \
+ if (drhd->ignored) {} else
+
#define for_each_active_iommu(i, drhd) \
list_for_each_entry(drhd, &dmar_drhd_units, list) \
if (i=drhd->iommu, drhd->ignored) {} else