diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index de8d87d4858d..822a5cd05566 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -77,7 +77,7 @@ static bool is_serdev_device(const struct device *dev)
 static void serdev_ctrl_release(struct device *dev)
 {
 	struct serdev_controller *ctrl = to_serdev_controller(dev);
-	ida_simple_remove(&ctrl_ida, ctrl->nr);
+	ida_free(&ctrl_ida, ctrl->nr);
 	kfree(ctrl);
 }
 
@@ -489,7 +489,7 @@ struct serdev_controller *serdev_controller_alloc(struct device *host,
 	if (!ctrl)
 		return NULL;
 
-	id = ida_simple_get(&ctrl_ida, 0, 0, GFP_KERNEL);
+	id = ida_alloc(&ctrl_ida, GFP_KERNEL);
 	if (id < 0) {
 		dev_err(parent,
 			"unable to allocate serdev controller identifier.\n");