From 3803f89e6e8aac951a24fd2b3f0df455494ef63b Mon Sep 17 00:00:00 2001
From: Stéphane Raimbault <stephane.raimbault@gmail.com>
Date: Sun, 17 Jul 2011 23:13:43 +0200
Subject: [PATCH] Extract serial_mode attribute from platform tests

---
 src/modbus-rtu-private.h | 2 ++
 src/modbus-rtu.c         | 3 +++
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/modbus-rtu-private.h b/src/modbus-rtu-private.h
index 93dfb03..2948f17 100644
--- a/src/modbus-rtu-private.h
+++ b/src/modbus-rtu-private.h
@@ -77,6 +77,8 @@ typedef struct _modbus_rtu {
 #else
     /* Save old termios settings */
     struct termios old_tios;
+#endif
+#if HAVE_DECL_TIOCSRS485
     int serial_mode;
 #endif
 } modbus_rtu_t;
diff --git a/src/modbus-rtu.c b/src/modbus-rtu.c
index 1c6e33e..bc2118e 100644
--- a/src/modbus-rtu.c
+++ b/src/modbus-rtu.c
@@ -698,10 +698,13 @@ static int _modbus_rtu_connect(modbus_t *ctx)
     if (tcsetattr(ctx->s, TCSANOW, &tios) < 0) {
         return -1;
     }
+#endif
 
+#if HAVE_DECL_TIOCSRS485
     /* The RS232 mode has been set by default */
     ctx_rtu->serial_mode = MODBUS_RTU_RS232;
 #endif
+
     return 0;
 }
 
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