diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index cc229e3..0009818 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3305,7 +3305,8 @@
 
 void ata_sas_port_destroy(struct ata_port *ap)
 {
-	ap->ops->port_stop(ap);
+	if (ap->ops->port_stop)
+		ap->ops->port_stop(ap);
 	kfree(ap);
 }
 EXPORT_SYMBOL_GPL(ata_sas_port_destroy);