only log BUG: (do not return error) in the case of unknown debug reason(0xc)

git-svn-id: svn://svn.berlios.de/openocd/trunk@1096 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/target/arm926ejs.c

@@ -350,11 +350,11 @@ int arm926ejs_examine_debug_reason(target_t *target)
 			break;
 		case 11:
 			LOG_ERROR("BUG: debug re-entry from system speed access shouldn't be handled here");
+			target->debug_reason = DBG_REASON_DBGRQ;
 			break;
 		default:
 			LOG_ERROR("BUG: unknown debug reason: 0x%x", debug_reason);
 			target->debug_reason = DBG_REASON_DBGRQ;
-			retval = ERROR_TARGET_FAILURE;
 			break;
 	}