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>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 2184c6b97aeb..4829252d7cfa 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -149,6 +149,7 @@ static inline unsigned long __ffs64(u64 word)
 #ifdef __KERNEL__
 
 #ifdef CONFIG_GENERIC_FIND_LAST_BIT
+#ifndef find_last_bit
 /**
  * find_last_bit - find the last set bit in a memory region
  * @addr: The address to start the search at
@@ -158,6 +159,7 @@ static inline unsigned long __ffs64(u64 word)
  */
 extern unsigned long find_last_bit(const unsigned long *addr,
                                    unsigned long size);
+#endif
 #endif /* CONFIG_GENERIC_FIND_LAST_BIT */
 
 #endif /* __KERNEL__ */