flash/nor/stellaris: allow to recover a locked device that can't be examined

Change-Id: I28536184053e2d1ba906620e728f7fad6ba39f0a
Reported-by: Ed Beroset <beroset@mindspring.com>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2552
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Ed Beroset <beroset@ieee.org>

src/flash/nor/stellaris.c

@@ -1359,12 +1359,12 @@ COMMAND_HANDLER(stellaris_handle_recover_command)
 	struct flash_bank *bank;
 	int retval;
 
-	if (CMD_ARGC < 1)
+	if (CMD_ARGC != 0)
 		return ERROR_COMMAND_SYNTAX_ERROR;
 
-	retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
-	if (retval != ERROR_OK)
-		return retval;
+	bank = get_flash_bank_by_num_noprobe(0);
+	if (!bank)
+		return ERROR_FAIL;
 
 	/* REVISIT ... it may be worth sanity checking that the AP is
 	 * inactive before we start.  ARM documents that switching a DP's
@@ -1425,7 +1425,7 @@ static const struct command_registration stellaris_exec_command_handlers[] = {
 		.name = "recover",
 		.handler = stellaris_handle_recover_command,
 		.mode = COMMAND_EXEC,
-		.usage = "bank_id",
+		.usage = "",
 		.help = "recover (and erase) locked device",
 	},
 	COMMAND_REGISTRATION_DONE