From fa39a30fe4b92adb77178f388947da922d41648d Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Tue, 25 Oct 2011 19:18:58 +0200
Subject: [PATCH] savevm: qemu_fille_buffer() used to return one error for
 reads of size 0.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 savevm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/savevm.c b/savevm.c
index f01838fb2d..bee16c0b7b 100644
--- a/savevm.c
+++ b/savevm.c
@@ -476,6 +476,8 @@ static void qemu_fill_buffer(QEMUFile *f)
     if (len > 0) {
         f->buf_size += len;
         f->buf_offset += len;
+    } else if (len == 0) {
+        f->last_error = -EIO;
     } else if (len != -EAGAIN)
         f->last_error = len;
 }