commands: exit on invalid option

Barebox commands should not perform any action and return 0 if an
invalid parameter was given. This might cause undetected unintended
behvaior when calling commands with wrong options, either manually or
from a script.

Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/commands/loadb.c b/commands/loadb.c
index 6180ce371a..8c3906ca42 100644
--- a/commands/loadb.c
+++ b/commands/loadb.c
@@ -634,8 +634,7 @@ static int do_load_serial_bin(int argc, char *argv[])
 			console_dev_name = optarg;
 			break;
 		default:
-			perror(argv[0]);
-			return 1;
+			return COMMAND_ERROR_USAGE;
 		}
 	}