mirror_zfs/include/spl-device.h
behlendo 46c685d0c4 Add class / device portability code. Two autoconf tests
were added to cover the 3 possible APIs from 2.6.9 to
2.6.26.  We attempt to use the newest interfaces and if
not available fallback to the oldest.  This a rework of
some changes proposed by Ricardo for RHEL4.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@150 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
2008-08-10 03:50:36 +00:00

54 lines
1.4 KiB
C

#ifndef _SPL_DEVICE_H
#define _SPL_DEVICE_H
#include <linux/device.h>
/*
* Preferred API from 2.6.18 to 2.6.26+
*/
#ifdef HAVE_DEVICE_CREATE
typedef struct class spl_class;
#define spl_class_create(mod, name) class_create(mod, name)
#define spl_class_destroy(cls) class_destroy(cls)
#define spl_device_create(cls, parent, devt, device, fmt, args...) \
device_create(cls, parent, devt, fmt, ## args)
#define spl_device_destroy(cls, devt) device_destroy(cls, devt)
/*
* Preferred API from 2.6.13 to 2.6.17
* Depricated in 2.6.18
* Removed in 2.6.26
*/
#else
#ifdef HAVE_CLASS_DEVICE_CREATE
typedef struct class spl_class;
#define spl_class_create(mod, name) class_create(mod, name)
#define spl_class_destroy(cls) class_destroy(cls)
#define spl_device_create(cls, parent, devt, device, fmt, args...) \
class_device_create(cls, parent, devt, device, fmt, ## args)
#define spl_device_destroy(cls, devt) class_device_destroy(cls, devt)
/*
* Prefered API from 2.6.0 to 2.6.12
* Depricated in 2.6.13
* Removed in 2.6.13
*/
#else /* Legacy API */
typedef struct class_simple spl_class;
#define spl_class_create(mod, name) class_simple_create(mod, name)
#define spl_class_destroy(cls) class_simple_destroy(cls)
#define spl_device_create(cls, parent, devt, device, fmt, args...) \
class_simple_device_add(cls, devt, device, fmt, ## args)
#define spl_device_destroy(cls, devt) class_simple_device_remove(devt)
#endif
#endif
#endif /* _SPL_DEVICE_H */