From dd673b0b5f58cb1f796c1026c4a628eb863327a0 Mon Sep 17 00:00:00 2001
From: oharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Fri, 8 May 2009 06:45:27 +0000
Subject: first jtag_check_value_mask usage. tested by using "arm7_9
 fast_memory_access enable" & "mdw 0 0x10"

git-svn-id: svn://svn.berlios.de/openocd/trunk@1664 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 src/jtag/jtag.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

(limited to 'src/jtag')

diff --git a/src/jtag/jtag.c b/src/jtag/jtag.c
index 2432516a..eba09549 100644
--- a/src/jtag/jtag.c
+++ b/src/jtag/jtag.c
@@ -1417,11 +1417,23 @@ void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, struct inval
 
 void jtag_check_value_mask(scan_field_t *field, u8 *value, u8 *mask)
 {
+	if (field->in_value==NULL)
+	{
+		LOG_ERROR("remember to fill in in_value for jtag_check_value_mask() to work!");
+		return;
+	}
+
+	if (value==NULL)
+	{
+		/* no checking to do */
+		return;
+	}
+
 	jtag_execute_queue_noclear();
-	
+
 	int retval=jtag_check_value_inner(field->in_value, field, value, mask);
 	jtag_set_error(retval);
-	
+
 }
 
 
-- 
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