From c5e0a8a890fbf5db7451759b64b4729b113adf11 Mon Sep 17 00:00:00 2001
From: Dave Rodgman <dave.rodgman@arm.com>
Date: Mon, 15 Aug 2022 14:24:22 +0100
Subject: [PATCH] Add missing error message

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
---
 programs/x509/cert_write.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index 2f51e19c8..0118abd20 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -467,7 +467,10 @@ int main( int argc, char *argv[] )
                 else if( strcmp( q, "OCSPSigning" ) == 0 )
                     SET_OID( ext_key_usage->buf, MBEDTLS_OID_OCSP_SIGNING );
                 else
+                {
+                    mbedtls_printf( "Invalid argument for option %s\n", p );
                     goto usage;
+                }
 
                 *tail = ext_key_usage;
                 tail = &ext_key_usage->next;