From 65d342541e78ab9a22bf480cc4fe2f659f94bad4 Mon Sep 17 00:00:00 2001
From: Serge Ziryukin <ftrvxmtrx@gmail.com>
Date: Sun, 25 Apr 2010 21:32:36 +0300
Subject: [PATCH] cmd_usb.c: show cmd usage if no args given
Signed-off-by: Serge Ziryukin <ftrvxmtrx@gmail.com>
---
common/cmd_usb.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/common/cmd_usb.c b/common/cmd_usb.c
index ee3755c121c..fcb5f763c02 100644
--- a/common/cmd_usb.c
+++ b/common/cmd_usb.c
@@ -516,6 +516,11 @@ int do_usb(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
block_dev_desc_t *stor_dev;
#endif
+ if (argc < 2) {
+ cmd_usage(cmdtp);
+ return 1;
+ }
+
if ((strncmp(argv[1], "reset", 5) == 0) ||
(strncmp(argv[1], "start", 5) == 0)) {
usb_stop();
--
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