error handling: the error number is not part of the user interface

Do not propagate error number to user. This is for internal
programming purposes only. Error messages to the user is
reported as text via LOG_ERROR().

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

src/jtag/core.c

@@ -695,7 +695,7 @@ void jtag_add_reset(int req_tlr_or_trst, int req_srst)
 			retval = jtag_execute_queue();
 
 		if (retval != ERROR_OK) {
-			LOG_ERROR("TRST/SRST error %d", retval);
+			LOG_ERROR("TRST/SRST error");
 			return;
 		}
 	}

src/jtag/transport.c

@@ -82,8 +82,8 @@ static  int transport_select(struct command_context *ctx, const char *name)
 			if (retval == ERROR_OK)
 				session = t;
 			else
-				LOG_ERROR("Error %d selecting '%s' as "
-					"transport", retval, t->name);
+				LOG_ERROR("Error selecting '%s' as "
+					"transport", t->name);
 			return retval;
 		}
 	}