diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index 0b67d894470d..0d81eede1217 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -762,7 +762,6 @@ EXPORT_SYMBOL(host1x_client_exit);
 /**
  * __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