linux/include/asm-generic/bitops/le.h
Akinobu Mita 19de85ef57 bitops: add #ifndef for each of find bitops
The style that we normally use in asm-generic is to test the macro itself
for existence, so in asm-generic, do:

	#ifndef find_next_zero_bit_le
	extern unsigned long find_next_zero_bit_le(const void *addr,
		unsigned long size, unsigned long offset);
	#endif

and in the architectures, write

	static inline unsigned long find_next_zero_bit_le(const void *addr,
		unsigned long size, unsigned long offset)
	#define find_next_zero_bit_le find_next_zero_bit_le

This adds the #ifndef for each of the find bitops in the generic header
and source files.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-26 17:12:38 -07:00

87 lines
2 KiB
C

#ifndef _ASM_GENERIC_BITOPS_LE_H_
#define _ASM_GENERIC_BITOPS_LE_H_
#include <asm/types.h>
#include <asm/byteorder.h>
#if defined(__LITTLE_ENDIAN)
#define BITOP_LE_SWIZZLE 0
static inline unsigned long find_next_zero_bit_le(const void *addr,
unsigned long size, unsigned long offset)
{
return find_next_zero_bit(addr, size, offset);
}
static inline unsigned long find_next_bit_le(const void *addr,
unsigned long size, unsigned long offset)
{
return find_next_bit(addr, size, offset);
}
static inline unsigned long find_first_zero_bit_le(const void *addr,
unsigned long size)
{
return find_first_zero_bit(addr, size);
}
#elif defined(__BIG_ENDIAN)
#define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7)
#ifndef find_next_zero_bit_le
extern unsigned long find_next_zero_bit_le(const void *addr,
unsigned long size, unsigned long offset);
#endif
#ifndef find_next_bit_le
extern unsigned long find_next_bit_le(const void *addr,
unsigned long size, unsigned long offset);
#endif
#ifndef find_first_zero_bit_le
#define find_first_zero_bit_le(addr, size) \
find_next_zero_bit_le((addr), (size), 0)
#endif
#else
#error "Please fix <asm/byteorder.h>"
#endif
static inline int test_bit_le(int nr, const void *addr)
{
return test_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline void __set_bit_le(int nr, void *addr)
{
__set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline void __clear_bit_le(int nr, void *addr)
{
__clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline int test_and_set_bit_le(int nr, void *addr)
{
return test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline int test_and_clear_bit_le(int nr, void *addr)
{
return test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline int __test_and_set_bit_le(int nr, void *addr)
{
return __test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline int __test_and_clear_bit_le(int nr, void *addr)
{
return __test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
#endif /* _ASM_GENERIC_BITOPS_LE_H_ */