cmd_usb.c: show cmd usage if no args given

Signed-off-by: Serge Ziryukin <ftrvxmtrx@gmail.com>

cmd_usb.c: show cmd usage if no args given
Signed-off-by: Serge Ziryukin <ftrvxmtrx@gmail.com>
Serge Ziryukin · Wolfgang Denk
1 parent e4a95d112e
Showing 1 changed file with 5 additions and 0 deletions Side-by-side Diff
common/cmd_usb.c
@@ -516,6 +516,11 @@
 	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();
...	...	@@ -516,6 +516,11 @@
516	516	block_dev_desc_t *stor_dev;
517	517	#endif
518	518
	519	+ if (argc < 2) {
	520	+ cmd_usage(cmdtp);
	521	+ return 1;
	522	+ }
	523	+
519	524	if ((strncmp(argv[1], "reset", 5) == 0) \|\|
520	525	(strncmp(argv[1], "start", 5) == 0)) {
521	526	usb_stop();