From d6170bfa53b34a882f6cae292c36dc88178680e4 Mon Sep 17 00:00:00 2001
From: Delweng Zheng <delweng@gmail.com>
Date: Mon, 29 Oct 2018 19:51:45 +0800
Subject: [PATCH] eth/downloader: progress in stateSync not used anymore

---
 eth/downloader/statesync.go | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/eth/downloader/statesync.go b/eth/downloader/statesync.go
index 8d33dfec74e7..d8e6013259dc 100644
--- a/eth/downloader/statesync.go
+++ b/eth/downloader/statesync.go
@@ -152,7 +152,7 @@ func (d *Downloader) runStateSync(s *stateSync) *stateSync {
 			finished = append(finished, req)
 			delete(active, pack.PeerId())
 
-			// Handle dropped peer connections:
+		// Handle dropped peer connections:
 		case p := <-peerDrop:
 			// Skip if no request is currently pending
 			req := active[p.id]
@@ -399,7 +399,7 @@ func (s *stateSync) fillTasks(n int, req *stateReq) {
 // into a running state sync, re-queuing any items that were requested but not
 // delivered.
 func (s *stateSync) process(req *stateReq) error {
-	// Collect processing stats and update progress if valid data was received
+	// Collect processing stats
 	duplicate, unexpected := 0, 0
 
 	defer func(start time.Time) {
@@ -409,15 +409,12 @@ func (s *stateSync) process(req *stateReq) error {
 	}(time.Now())
 
 	// Iterate over all the delivered data and inject one-by-one into the trie
-	progress := false
-
 	for _, blob := range req.response {
-		prog, hash, err := s.processNodeData(blob)
+		_, hash, err := s.processNodeData(blob)
 		switch err {
 		case nil:
 			s.numUncommitted++
 			s.bytesUncommitted += len(blob)
-			progress = progress || prog
 		case trie.ErrNotRequested:
 			unexpected++
 		case trie.ErrAlreadyProcessed: