iommu sg: kill __clear_bit_string and find_next_zero_string

        lib-y += csum-partial_64.o csum-copy_64.o csum-wrappers_64.o

        lib-y += thunk_64.o clear_page_64.o copy_page_64.o

        lib-y += bitstr_64.o bitops_64.o

        lib-y += bitops_64.o

        lib-y += memmove_64.o memset_64.o

        lib-y += copy_user_64.o rwlock_64.o copy_user_nocache_64.o

endif

#include <linux/module.h>

#include <linux/bitops.h>

/* Find string of zero bits in a bitmap */ 

unsigned long 

find_next_zero_string(unsigned long *bitmap, long start, long nbits, int len)

{ 

	unsigned long n, end, i; 	

 again:

	n = find_next_zero_bit(bitmap, nbits, start);

	if (n == -1) 

		return -1;

	/* could test bitsliced, but it's hardly worth it */

	end = n+len;

	if (end > nbits)

		return -1; 

	for (i = n+1; i < end; i++) { 

		if (test_bit(i, bitmap)) {  

			start = i+1; 

			goto again; 

		} 

	}

	return n;

}

EXPORT_SYMBOL(find_next_zero_string);

  ((off)+(__scanbit(~(((*(unsigned long *)addr)) >> (off)),(size)-(off)))) : \

	find_next_zero_bit(addr,size,off)))

/* 

 * Find string of zero bits in a bitmap. -1 when not found.

 */ 

extern unsigned long 

find_next_zero_string(unsigned long *bitmap, long start, long nbits, int len);

static inline void set_bit_string(unsigned long *bitmap, unsigned long i, 

				  int len) 

{ 

	}

} 

static inline void __clear_bit_string(unsigned long *bitmap, unsigned long i, 

				    int len) 

{ 

	unsigned long end = i + len; 

	while (i < end) {

		__clear_bit(i, bitmap); 

		i++;

	}

} 

/**

 * ffz - find first zero in word.

 * @word: The word to search