diff --git a/drivers/iommu/omap-iopgtable.h b/drivers/iommu/omap-iopgtable.h
index f4003d568a923a89d7f766abd77718f03cf1e74a..b6f9a51746caad5956442e7d99a1b5450cf72f0b 100644
--- a/drivers/iommu/omap-iopgtable.h
+++ b/drivers/iommu/omap-iopgtable.h
@@ -95,4 +95,4 @@ static inline phys_addr_t omap_iommu_translate(u32 d, u32 va, u32 mask)
 #define iopte_offset(iopgd, da)	(iopgd_page_vaddr(iopgd) + iopte_index(da))
 
 #define to_iommu(dev)							\
-	((struct omap_iommu *)platform_get_drvdata(to_platform_device(dev)))
+	(platform_get_drvdata(to_platform_device(dev)))