From 01ba2ef2b08e8d5e48a629a6133a64d0cc82bc29 Mon Sep 17 00:00:00 2001
From: Stanislav Shwartsman <sshwarts@users.sourceforge.net>
Date: Sat, 30 Apr 2011 18:47:04 +0000
Subject: [PATCH] recv can return -1

---
 bochs/iodev/serial.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bochs/iodev/serial.cc b/bochs/iodev/serial.cc
index 0262dbd89..cabd37786 100644
--- a/bochs/iodev/serial.cc
+++ b/bochs/iodev/serial.cc
@@ -1388,7 +1388,7 @@ void bx_serial_c::rx_timer(void)
 #else
                 read(socketid, &chbuf, 1);
 #endif
-            if (bytes) {
+            if (bytes > 0) {
               BX_INFO((" -- COM %d : read byte [%d]", port+1, chbuf));
               data_ready = 1;
             }