diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index acc7555b002d..a035ef911fba 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -601,7 +601,7 @@ intel_svm_bind_mm(struct device *dev, int flags, struct svm_dev_ops *ops,
 }
 
 /* Caller must hold pasid_mutex */
-int intel_svm_unbind_mm(struct device *dev, int pasid)
+static int intel_svm_unbind_mm(struct device *dev, int pasid)
 {
 	struct intel_svm_dev *sdev;
 	struct intel_iommu *iommu;