diff --git a/drivers/cadence/uart/aarch64/cdns_console.S b/drivers/cadence/uart/aarch64/cdns_console.S
index 8e5d6a1..d1995e3 100644
--- a/drivers/cadence/uart/aarch64/cdns_console.S
+++ b/drivers/cadence/uart/aarch64/cdns_console.S
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -184,11 +184,11 @@
 endfunc console_cdns_getc
 
 	/* ---------------------------------------------
-	 * int console_cdns_core_flush(uintptr_t base_addr)
+	 * void console_cdns_core_flush(uintptr_t base_addr)
 	 * Function to force a write of all buffered
 	 * data that hasn't been output.
 	 * In : x0 - console base address
-	 * Out : return -1 on error else return 0.
+	 * Out : void
 	 * Clobber list : x0, x1
 	 * ---------------------------------------------
 	 */
@@ -198,16 +198,15 @@
 	ASM_ASSERT(ne)
 #endif /* ENABLE_ASSERTIONS */
 	/* Placeholder */
-	mov	w0, #0
 	ret
 endfunc console_cdns_core_flush
 
 	/* ---------------------------------------------
-	 * int console_cdns_flush(console_t *console)
+	 * void console_cdns_flush(console_t *console)
 	 * Function to force a write of all buffered
 	 * data that hasn't been output.
 	 * In : x0 - pointer to console_t structure
-	 * Out : return -1 on error else return 0.
+	 * Out : void.
 	 * Clobber list : x0, x1
 	 * ---------------------------------------------
 	 */