diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index aec2e0da50164ca688cc9e2ea95355f0aeaf4669..588affd6fde789973c13c9933c1d8c5a71aa8553 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -388,7 +388,7 @@ int sas_ex_phy_discover(struct domain_device *dev, int single)
 	if (!disc_req)
 		return -ENOMEM;
 
-	disc_resp = alloc_smp_req(DISCOVER_RESP_SIZE);
+	disc_resp = alloc_smp_resp(DISCOVER_RESP_SIZE);
 	if (!disc_resp) {
 		kfree(disc_req);
 		return -ENOMEM;