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staging: comedi: comedi_8254.h: make self-reliant

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The Comedi "comedi_8254.h" header file is included by various Comedi
drivers with timer/counters based on the 8254 chip.  The drivers do not
compile cleanly if this header file is included first.  It uses pointers
to the `struct comedi_device`, `struct comedi_subdevice`, and `struct
comedi_insn` structures in various function prototypes, so declare those
as incomplete types.  It use the `bool` type, so include
<linux/types.h>.  It also uses the `__iomem` tag, but that seems to be
taken care of indirectly by including <linux/types.h>.

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>
This commit is contained in:
Ian Abbott 2015-05-22 18:32:31 +01:00 • committed by Greg Kroah-Hartman
parent e57180c85a
commit b727255f01
1 changed files with 6 additions and 0 deletions
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6
drivers/staging/comedi/drivers/comedi_8254.h
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@ -20,6 +20,12 @@
#ifndef _COMEDI_8254_H
#define _COMEDI_8254_H
#include <linux/types.h>
struct comedi_device;
struct comedi_insn;
struct comedi_subdevice;
/*
* Common oscillator base values in nanoseconds
*/