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 2dbeea6..53fb86d 100644
--- 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.
*/