From ba79d503bb4f1e92e91a4c300a036819fe91c6d3 Mon Sep 17 00:00:00 2001
From: Marc Schink <dev@zapb.de>
Date: Mon, 6 Nov 2023 16:22:53 +0100
Subject: [PATCH] jtag/drivers/cmsis-dap: Return error in 'backend' command

Change-Id: Ib9bf7ab50cbe193e9e726efb3cb58e53723a6dd1
Signed-off-by: Marc Schink <dev@zapb.de>
Reviewed-on: https://review.openocd.org/c/openocd/+/7964
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
---
 src/jtag/drivers/cmsis_dap.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/jtag/drivers/cmsis_dap.c b/src/jtag/drivers/cmsis_dap.c
index 52e4fadeb9..03832431dd 100644
--- a/src/jtag/drivers/cmsis_dap.c
+++ b/src/jtag/drivers/cmsis_dap.c
@@ -2148,10 +2148,11 @@ COMMAND_HANDLER(cmsis_dap_handle_backend_command)
 				}
 			}
 
-			LOG_ERROR("invalid backend argument to cmsis-dap backend <backend>");
+			command_print(CMD, "invalid backend argument to cmsis-dap backend <backend>");
+			return ERROR_COMMAND_ARGUMENT_INVALID;
 		}
 	} else {
-		LOG_ERROR("expected exactly one argument to cmsis-dap backend <backend>");
+		return ERROR_COMMAND_SYNTAX_ERROR;
 	}
 
 	return ERROR_OK;