diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 17eb4185f29de5b65a78ba3c344304666b5663e0..f21c93bbb35c7e8d6f878dba523a9c53491080a4 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -828,6 +828,7 @@ static struct domain_device *sas_ex_discover_end_dev(
 		rphy = sas_end_device_alloc(phy->port);
 		if (!rphy)
 			goto out_free;
+		rphy->identify.phy_identifier = phy_id;
 
 		child->rphy = rphy;
 		get_device(&rphy->dev);
@@ -854,6 +855,7 @@ static struct domain_device *sas_ex_discover_end_dev(
 
 		child->rphy = rphy;
 		get_device(&rphy->dev);
+		rphy->identify.phy_identifier = phy_id;
 		sas_fill_in_rphy(child, rphy);
 
 		list_add_tail(&child->disco_list_node, &parent->port->disco_list);