Do not check ir capture if there is no IDCODE

git-svn-id: svn://svn.berlios.de/openocd/trunk@2812 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/jtag/core.c

@@ -1108,6 +1108,8 @@ static int jtag_validate_ircapture(void)
 			break;
 		}
 
+		if (tap->hasidcode)
+		{
 			/* Validate the two LSBs, which must be 01 per JTAG spec.
 			 * REVISIT we might be able to verify some MSBs too, using
 			 * ircapture/irmask attributes.
@@ -1122,6 +1124,7 @@ static int jtag_validate_ircapture(void)
 				retval = ERROR_JTAG_INIT_FAILED;
 				goto done;
 			}
+		}
 		LOG_DEBUG("%s: IR capture 0x%0*x", jtag_tap_name(tap),
 				(tap->ir_length + 7) / tap->ir_length, val);
 		chain_pos += tap->ir_length;