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, 1 deletions

diff --git a/commands/mem.c b/commands/mem.c
index 907f1f76a8..29eaa80b23 100644
--- a/commands/mem.c
+++ b/commands/mem.c
@@ -74,7 +74,7 @@ int mem_parse_options(int argc, char *argv[], char *optstr, int *mode,
 			*swab = 1;
 			break;
 		default:
-			return -1;
+			return COMMAND_ERROR_USAGE;
 		}
 	}