iommu/omap: Protect omap-iopgtable.h against double inclusion
Protect the omap-pgtable.h header against double inclusion in
source code by using the standard include guard mechanism.
Signed-off-by: Suman Anna <s-anna@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
diff --git a/drivers/iommu/omap-iopgtable.h b/drivers/iommu/omap-iopgtable.h
index f891683..bfde540 100644
--- a/drivers/iommu/omap-iopgtable.h
+++ b/drivers/iommu/omap-iopgtable.h
@@ -10,6 +10,9 @@
* published by the Free Software Foundation.
*/
+#ifndef _OMAP_IOPGTABLE_H
+#define _OMAP_IOPGTABLE_H
+
/*
* "L2 table" address mask and size definitions.
*/
@@ -93,3 +96,5 @@
/* to find an entry in the second-level page table. */
#define iopte_index(da) (((da) >> IOPTE_SHIFT) & (PTRS_PER_IOPTE - 1))
#define iopte_offset(iopgd, da) (iopgd_page_vaddr(iopgd) + iopte_index(da))
+
+#endif /* _OMAP_IOPGTABLE_H */