tools/env: fail on invalid options

Signed-off-by: Daniel Hobi <daniel.hobi@schmid-telecom.ch>

diff --git a/tools/env/fw_env_main.c b/tools/env/fw_env_main.c
index baf3a4d..c654057 100644 (file)
--- a/tools/env/fw_env_main.c
+++ b/tools/env/fw_env_main.c
@@ -105,6 +105,10 @@ main(int argc, char *argv[])
                case 'h':
                        usage();
                        return EXIT_SUCCESS;
+               default: /* '?' */
+                       fprintf(stderr, "Try `%s --help' for more information."
+                               "\n", cmdname);
+                       return EXIT_FAILURE;
                }
        }