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

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The Comedi "comedi_isadma.h" header is included by the source for the
"comedi_isadma" helper module and other modules that use it.  It does
not compile cleanly when it is the first header file included.  It uses
the `dma_addr_t` type, so include <linux/types.h> to declare it.  (Also,
that indirectly takes care of the use of `NULL`.)  It uses `struct
comedi_device *` in various function prototypes, so add an incomplete
declaration of `struct comedi_device`.

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 18:45:25 +01:00 committed by Greg Kroah-Hartman
parent b727255f01
commit 3a62cdb7f6
1 changed files with 4 additions and 0 deletions
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4
drivers/staging/comedi/drivers/comedi_isadma.h
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@ -16,6 +16,10 @@
#ifndef _COMEDI_ISADMA_H
#define _COMEDI_ISADMA_H
#include <linux/types.h>
struct comedi_device;
/*
* These are used to avoid issues when <asm/dma.h> and the DMA_MODE_
* defines are not available.