Index: b/drivers/ata/libata-core.c
===================================================================
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6181,12 +6181,14 @@ int ata_host_register(struct ata_host *h
 	/* perform each probe asynchronously */
 	for (i = 0; i < host->n_ports; i++) {
 		struct ata_port *ap = host->ports[i];
 		async_schedule(async_port_probe, ap);
 	}
 
+	async_synchronize_full();
+
 	return 0;
 
  err_tadd:
 	while (--i >= 0) {
 		ata_tport_delete(host->ports[i]);
 	}