set instructions of all parts to BYPASS for tap_reset(), fixes

[ 1873260 ] Command 'reset' does not reset internal states


git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@972 b68d4a1b-bc3d-0410-92ed-d4ac073336b7

jtag/ChangeLog

@@ -1,3 +1,9 @@
+2008-01-30  Arnim Laeuger  <arniml@users.sourceforge.net>
+
+    * src/tap/tap.c (tap_reset): set instructions of all parts to BYPASS, fix
+      [ 1873260 ] Command 'reset' does not reset internal states
+    * src/part/part.c (parts_set_instruction): catch NULL pointer
+
 2008-01-25  Kolja Waschk <kawk>
 
     * include/jim.h, src/jim/tap.c, intel_28f800b3.c, Makefile.am,

jtag/src/part/part.c

@@ -306,6 +306,9 @@ parts_set_instruction( parts_t *ps, const char *iname )
 {
 	int i;
 
+	if (!ps)
+		return;
+
 	for (i = 0; i < ps->len; i++)
 		ps->parts[i]->active_instruction = part_find_instruction( ps->parts[i], iname );
 }

jtag/src/tap/tap.c

@@ -39,6 +39,8 @@ tap_reset( chain_t *chain )
 	chain_clock( chain, 1, 0, 5 );				/* Test-Logic-Reset */
 
 	chain_clock( chain, 0, 0, 1 );				/* Run-Test/Idle */
+
+	parts_set_instruction( chain->parts, "BYPASS" );
 }
 
 void