From 28e42d3306cf7947e57df7675cefe4cc31062126 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mario=20H=C3=BCttel?= <mario.huettel@gmx.net>
Date: Sat, 10 Apr 2021 22:28:30 +0200
Subject: [PATCH] Shell: Update: Print error if no update file name is
 specified

---
 stm-firmware/shell.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/stm-firmware/shell.c b/stm-firmware/shell.c
index e56244d..51fcef3 100644
--- a/stm-firmware/shell.c
+++ b/stm-firmware/shell.c
@@ -655,6 +655,11 @@ shellmatta_retCode_t shell_cmd_update(const shellmatta_handle_t handle, const ch
 		}
 	}
 
+	if (!update_file || !strlen(update_file)) {
+		shellmatta_printf(handle, "Please specify a valid update file!\r\n");
+		return SHELLMATTA_ERROR;
+	}
+
 	updater_update_from_file(update_file);
 
 	return SHELLMATTA_OK;