From f87490e0f6f058252fda7874df4fc993ff36c1c6 Mon Sep 17 00:00:00 2001
From: Frank Mori Hess <fmhess@speakeasy.net>
Date: Sat, 1 Dec 2007 15:54:08 +0000
Subject: [PATCH] Fixed setting of comedi_errno in comedi_dio_config() for
 invalid arguments.

---
 lib/dio.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/dio.c b/lib/dio.c
index 65b07a4..5d5cb08 100644
--- a/lib/dio.c
+++ b/lib/dio.c
@@ -43,12 +43,14 @@ int _comedi_dio_config(comedi_t *it,unsigned int subdev,unsigned int chan,unsign
 		return -1;
 
 	s=it->subdevices+subdev;
-	if(s->type!=COMEDI_SUBD_DIO)
+	if(s->type!=COMEDI_SUBD_DIO){
+		internal_error(EINVAL_SUBD);
 		return -1;
-
-	if(io!=COMEDI_INPUT && io!=COMEDI_OUTPUT)
+	}
+	if(io!=COMEDI_INPUT && io!=COMEDI_OUTPUT){
+		internal_error(EINVAL);
 		return -1;
-
+	}
 	if(it->has_insnlist_ioctl){
 		comedi_insn insn;
 		lsampl_t data;