diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index 8fc8fe0b98485..9f7ac75c5687a 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -1278,7 +1278,7 @@ static u64 dma_get_required_mask_pSeriesLP(struct device *dev)
 			return DMA_BIT_MASK(64);
 	}
 
-	return dma_iommu_ops.get_required_mask(dev);
+	return dma_iommu_get_required_mask(dev);
 }
 
 static int iommu_mem_notifier(struct notifier_block *nb, unsigned long action,