From 45ebed05b77a1999acc87f0684d8e5f0f9800098 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <info@lategoodbye.de>
Date: Sun, 20 May 2012 03:05:26 +0200
Subject: [PATCH] Added error message in case of invalid parameter

---
 mbus/mbus-serial.c | 3 +++
 mbus/mbus-tcp.c    | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/mbus/mbus-serial.c b/mbus/mbus-serial.c
index f5aa052..ec6b112 100644
--- a/mbus/mbus-serial.c
+++ b/mbus/mbus-serial.c
@@ -226,7 +226,10 @@ mbus_serial_recv_frame(mbus_serial_handle *handle, mbus_frame *frame)
     int len, remaining, nread;
     
     if (handle == NULL || frame == NULL)
+    {
+        fprintf(stderr, "%s: Invalid parameter.\n", __PRETTY_FUNCTION__);
         return -1;
+    }
 
     memset((void *)buff, 0, sizeof(buff));
 
diff --git a/mbus/mbus-tcp.c b/mbus/mbus-tcp.c
index e820090..17150fb 100644
--- a/mbus/mbus-tcp.c
+++ b/mbus/mbus-tcp.c
@@ -168,7 +168,10 @@ mbus_tcp_recv_frame(mbus_tcp_handle *handle, mbus_frame *frame)
     int len, remaining, nread;
     
     if (handle == NULL || frame == NULL)
+    {
+        fprintf(stderr, "%s: Invalid parameter.\n", __PRETTY_FUNCTION__);
         return -1;
+    }
 
     memset((void *)buff, 0, sizeof(buff));