[PATCH] crc exit with COMMAND_ERROR_USAGE

[Jan Weitzel]

If parameter -v without a crc is used, you got a notice but the crc is
calculated and exit status is 0.
With wrong parameters we should quite with COMMAND_ERROR_USAGE.

Signed-off-by: Jan Weitzel <j.weitzel at phytec.de>
---
 commands/crc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/commands/crc.c b/commands/crc.c
index 01fedd7..8ce97da 100644
--- a/commands/crc.c
+++ b/commands/crc.c
@@ -108,6 +108,8 @@ static int do_crc(struct command *cmdtp, int argc, char *argv[])
 			verify = 1;
 			vcrc = simple_strtoul(optarg, NULL, 0);
 			break;
+		default:
+			return COMMAND_ERROR_USAGE;
 		}
 	}
 
-- 
1.7.0.4