m68knommu: use generic find_next_bit_le()
The implementation of find_next_bit_le() on m68knommu is identical with the generic implementation of find_next_bit_le(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.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>
This commit is contained in:
Родитель
802caabbed
Коммит
968d803c98
|
@ -321,50 +321,8 @@ found_middle:
|
|||
}
|
||||
#define find_next_zero_bit_le find_next_zero_bit_le
|
||||
|
||||
static inline unsigned long find_next_bit_le(const void *addr, unsigned
|
||||
long size, unsigned long offset)
|
||||
{
|
||||
const unsigned long *p = addr;
|
||||
unsigned long result = offset & ~(BITS_PER_LONG - 1);
|
||||
unsigned long tmp;
|
||||
|
||||
if (offset >= size)
|
||||
return size;
|
||||
p += offset / BITS_PER_LONG;
|
||||
size -= result;
|
||||
offset &= (BITS_PER_LONG - 1UL);
|
||||
if (offset) {
|
||||
tmp = __swab32(*(p++));
|
||||
tmp &= (~0UL << offset);
|
||||
if (size < BITS_PER_LONG)
|
||||
goto found_first;
|
||||
if (tmp)
|
||||
goto found_middle;
|
||||
size -= BITS_PER_LONG;
|
||||
result += BITS_PER_LONG;
|
||||
}
|
||||
|
||||
while (size & ~(BITS_PER_LONG - 1)) {
|
||||
tmp = *(p++);
|
||||
if (tmp)
|
||||
goto found_middle_swap;
|
||||
result += BITS_PER_LONG;
|
||||
size -= BITS_PER_LONG;
|
||||
}
|
||||
if (!size)
|
||||
return result;
|
||||
tmp = __swab32(*p);
|
||||
found_first:
|
||||
tmp &= (~0UL >> (BITS_PER_LONG - size));
|
||||
if (tmp == 0UL) /* Are any bits set? */
|
||||
return result + size; /* Nope. */
|
||||
found_middle:
|
||||
return result + __ffs(tmp);
|
||||
|
||||
found_middle_swap:
|
||||
return result + __ffs(__swab32(tmp));
|
||||
}
|
||||
#define find_next_bit_le find_next_bit_le
|
||||
extern unsigned long find_next_bit_le(const void *addr,
|
||||
unsigned long size, unsigned long offset);
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
|
|
Загрузка…
Ссылка в новой задаче