diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index 01538262..cc5e30a2 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -705,8 +705,9 @@ void host1x_driver_unregister(struct host1x_driver *driver)
 EXPORT_SYMBOL(host1x_driver_unregister);
 
 /**
- * host1x_client_register() - register a host1x client
+ * __host1x_client_register() - register a host1x client
  * @client: host1x client
+ * @key: lock class key for the client-specific mutex
  *
  * Registers a host1x client with each host1x controller instance. Note that
  * each client will only match their parent host1x controller and will only be
@@ -716,7 +717,7 @@ EXPORT_SYMBOL(host1x_driver_unregister);
  * &host1x_client_ops.init implementation.
  */
 int __host1x_client_register(struct host1x_client *client,
-			   struct lock_class_key *key)
+			     struct lock_class_key *key)
 {
 	struct host1x *host1x;
 	int err;