From 8062087ab346852563bf13eef38309c88d520bb7 Mon Sep 17 00:00:00 2001
From: Martin Ling <martin-git@earth.li>
Date: Tue, 29 Dec 2015 02:36:04 +0000
Subject: [PATCH] Change debug message to "Port not open" when a closed port is
 used.

Fixes bug #710.
---
 serialport.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/serialport.c b/serialport.c
index 520d27e..c4a0e1b 100644
--- a/serialport.c
+++ b/serialport.c
@@ -389,12 +389,12 @@ SP_API void sp_free_port_list(struct sp_port **list)
 #ifdef _WIN32
 #define CHECK_PORT_HANDLE() do { \
 	if (port->hdl == INVALID_HANDLE_VALUE) \
-		RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
+		RETURN_ERROR(SP_ERR_ARG, "Port not open"); \
 } while (0)
 #else
 #define CHECK_PORT_HANDLE() do { \
 	if (port->fd < 0) \
-		RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
+		RETURN_ERROR(SP_ERR_ARG, "Port not open"); \
 } while (0)
 #endif
 #define CHECK_OPEN_PORT() do { \