drivers/staging/comedi/comedi_compat32.h

   1 /*
   2     comedi/comedi_compat32.h
   3     32-bit ioctl compatibility for 64-bit comedi kernel module.
   4
   5     Author: Ian Abbott, MEV Ltd. <abbotti@mev.co.uk>
   6     Copyright (C) 2007 MEV Ltd. <http://www.mev.co.uk/>
   7
   8     COMEDI - Linux Control and Measurement Device Interface
   9     Copyright (C) 1997-2007 David A. Schleef <ds@schleef.org>
  10
  11     This program is free software; you can redistribute it and/or modify
  12     it under the terms of the GNU General Public License as published by
  13     the Free Software Foundation; either version 2 of the License, or
  14     (at your option) any later version.
  15
  16     This program is distributed in the hope that it will be useful,
  17     but WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19     GNU General Public License for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with this program; if not, write to the Free Software
  23     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24
  25 */
  26
  27 #ifndef _COMEDI_COMPAT32_H
  28 #define _COMEDI_COMPAT32_H
  29
  30 #include <linux/compat.h>
  31 #include <linux/fs.h>   /* For HAVE_COMPAT_IOCTL and HAVE_UNLOCKED_IOCTL */
  32
  33 #ifdef CONFIG_COMPAT
  34
  35 #ifdef HAVE_COMPAT_IOCTL
  36
  37 extern long comedi_compat_ioctl(struct file *file, unsigned int cmd,
  38                 unsigned long arg);
  39 #define comedi_register_ioctl32() do {} while (0)
  40 #define comedi_unregister_ioctl32() do {} while (0)
  41
  42 #else /* HAVE_COMPAT_IOCTL */
  43
  44 #define comedi_compat_ioctl 0   /* NULL */
  45 extern void comedi_register_ioctl32(void);
  46 extern void comedi_unregister_ioctl32(void);
  47
  48 #endif /* HAVE_COMPAT_IOCTL */
  49
  50 #else /* CONFIG_COMPAT */
  51
  52 #define comedi_compat_ioctl 0   /* NULL */
  53 #define comedi_register_ioctl32() do {} while (0)
  54 #define comedi_unregister_ioctl32() do {} while (0)
  55
  56 #endif /* CONFIG_COMPAT */
  57
  58 #endif /* _COMEDI_COMPAT32_H */