diff --git a/drivers/ata/pata_parport/pata_parport.c b/drivers/ata/pata_parport/pata_parport.c
index cf81a6128f55..f0fe921a10b4 100644
--- a/drivers/ata/pata_parport/pata_parport.c
+++ b/drivers/ata/pata_parport/pata_parport.c
@@ -723,7 +723,7 @@ static void pata_parport_attach(struct parport *port)
 	int pr_num, id;
 
 	mutex_lock(&pi_mutex);
-	id = idr_alloc(&parport_list, port, port->number, port->number,
+	id = idr_alloc(&parport_list, port, port->number, port->number + 1,
 		       GFP_KERNEL);
 	if (id < 0) {
 		mutex_unlock(&pi_mutex);