From 958b3a52019ac8e8b54e88bfe4bb23d935b6a7ea Mon Sep 17 00:00:00 2001
From: Enrico Jorns <ejo@pengutronix.de>
Date: Thu, 1 Sep 2016 09:33:44 +0200
Subject: commands: saveenv: exit on invalid option

Saveenv should not perform any actions if an invalid parameter was
given.

Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 commands/saveenv.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'commands/saveenv.c')

diff --git a/commands/saveenv.c b/commands/saveenv.c
index 6f210b7ec1..bc1202f9a1 100644
--- a/commands/saveenv.c
+++ b/commands/saveenv.c
@@ -35,6 +35,8 @@ static int do_saveenv(int argc, char *argv[])
 		case 'z':
 			envfs_flags |= ENVFS_FLAGS_FORCE_BUILT_IN;
 			break;
+		default:
+			return COMMAND_ERROR_USAGE;
 		}
 	}
 
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