diff options
Diffstat (limited to 'arch/m68k')
-rw-r--r-- | arch/m68k/include/asm/bitops_mm.h | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/m68k/include/asm/bitops_mm.h b/arch/m68k/include/asm/bitops_mm.h index 3d16871402ad..a403b5e69aab 100644 --- a/arch/m68k/include/asm/bitops_mm.h +++ b/arch/m68k/include/asm/bitops_mm.h | |||
@@ -330,23 +330,19 @@ static inline int __fls(int x) | |||
330 | static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size) | 330 | static inline int minix_find_first_zero_bit(const void *vaddr, unsigned size) |
331 | { | 331 | { |
332 | const unsigned short *p = vaddr, *addr = vaddr; | 332 | const unsigned short *p = vaddr, *addr = vaddr; |
333 | int res; | ||
334 | unsigned short num; | 333 | unsigned short num; |
335 | 334 | ||
336 | if (!size) | 335 | if (!size) |
337 | return 0; | 336 | return 0; |
338 | 337 | ||
339 | size = (size >> 4) + ((size & 15) > 0); | 338 | size = (size >> 4) + ((size & 15) > 0); |
340 | while (*p++ == 0xffff) | 339 | while (*p++ == 0xffff) { |
341 | { | ||
342 | if (--size == 0) | 340 | if (--size == 0) |
343 | return (p - addr) << 4; | 341 | return (p - addr) << 4; |
344 | } | 342 | } |
345 | 343 | ||
346 | num = ~*--p; | 344 | num = *--p; |
347 | __asm__ __volatile__ ("bfffo %1{#16,#16},%0" | 345 | return ((p - addr) << 4) + ffz(num); |
348 | : "=d" (res) : "d" (num & -num)); | ||
349 | return ((p - addr) << 4) + (res ^ 31); | ||
350 | } | 346 | } |
351 | 347 | ||
352 | #define minix_test_and_set_bit(nr, addr) __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr)) | 348 | #define minix_test_and_set_bit(nr, addr) __test_and_set_bit((nr) ^ 16, (unsigned long *)(addr)) |