[PATCH 2/6] staging: comedi: amplc_dio200.h: make self-reliant

[Ian Abbott]

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@xxxxxxxxx>
---
 drivers/staging/comedi/drivers/amplc_dio200.h | 4 ++++
 1 file changed, 4 insertions(+)

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.
  */
-- 
2.1.4

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