From e30f328c7429d4e891ce6da26af95c607f392739 Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah@redhat.com>
Date: Tue, 27 Apr 2010 18:04:01 +0530
Subject: [PATCH] virtio-serial: Remove redundant check for 0-sized write
 request

The check for a 0-sized write request to a guest port is not necessary;
the while loop below won't be executed in this case and all will be
fine.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 hw/virtio-serial-bus.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 8efba0bf85..c1d9851788 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -91,9 +91,6 @@ static size_t write_to_port(VirtIOSerialPort *port,
     if (!virtio_queue_ready(vq)) {
         return 0;
     }
-    if (!size) {
-        return 0;
-    }
 
     while (offset < size) {
         int i;