From e6f42eaeb64c0bb6447426f454ed0cedd89b484d Mon Sep 17 00:00:00 2001
From: oharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Thu, 22 May 2008 07:28:56 +0000
Subject: jtag_exexcute_queue() now logs error when it is invoked before 'init'
 command.

git-svn-id: svn://svn.berlios.de/openocd/trunk@673 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 src/jtag/jtag.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/jtag/jtag.c b/src/jtag/jtag.c
index e0b008ba..cd4b255a 100644
--- a/src/jtag/jtag.c
+++ b/src/jtag/jtag.c
@@ -1260,7 +1260,13 @@ enum scan_type jtag_scan_type(scan_command_t *cmd)
 int MINIDRIVER(interface_jtag_execute_queue)(void)
 {
 	int retval;
-
+	
+	if (jtag==NULL)
+	{
+		LOG_ERROR("No JTAG interface configured yet. Issue 'init' command in startup scripts before communicating with targets.");
+		return ERROR_FAIL;
+	}
+	
 	retval = jtag->execute_queue();
 	
 	cmd_queue_free();
-- 
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