diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index c430c10fb645a1c78b9d20d7c7587f8e07bd5075..12f77798a0a4c86e0f86000f69690465158809e7 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -283,7 +283,7 @@ static struct iommu_dev_data *get_dev_data(struct device *dev)
 static struct iommu_group *acpihid_device_group(struct device *dev)
 {
 	struct acpihid_map_entry *p, *entry = NULL;
-	u16 devid;
+	int devid;
 
 	devid = get_acpihid_device_id(dev, &entry);
 	if (devid < 0)