staging: comedi: amplc_dio200.h: make self-reliant

The Comedi "amplc_dio200.h" header file included by drivers for Amplicon
DIO200 series cards does not compile cleanly when it is the first header
included by the ".c" file.  It uses `struct comedi_device *` in the
parameter lists of some function prototypes, so just declare `struct
comedi_device` as an incomplete type.  It also uses `bool`, so include
<linux/types.h> to declare it.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/amplc_dio200.h b/drivers/staging/comedi/drivers/amplc_dio200.h
index 2dbeea6c9d7711e54209cc0963dd99ba027f8f5a..53fb86d59fc3a04cab2d4d3f077e627c6df582b9 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_dio200.h
+++ b/drivers/staging/comedi/drivers/amplc_dio200.h
@@ -23,6 +23,10 @@
 #ifndef AMPLC_DIO200_H_INCLUDED
 #define AMPLC_DIO200_H_INCLUDED
 
+#include <linux/types.h>
+
+struct comedi_device;
+
 /*
  * Subdevice types.
  */