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xtensa: fix __ffs result type

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Make __ffs result type unsigned long to match generic asm
implementation. This fixes the following build warning:

  mm/nobootmem.c: In function '__free_pages_memory':
  include/linux/kernel.h:742:17: warning: comparison of distinct pointer
                                          types lacks a cast
    (void) (&_min1 == &_min2);  \
  		 ^
  mm/nobootmem.c💯11: note: in expansion of macro 'min'
     order = min(MAX_ORDER - 1UL, __ffs(start));

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2016-04-25 04:06:37 +03:00
parent 8a5043b683
commit 12c8007daf
1 changed files with 1 additions and 1 deletions
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2
arch/xtensa/include/asm/bitops.h
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@ -48,7 +48,7 @@ static inline int ffz(unsigned long x)
* __ffs: Find first bit set in word. Return 0 for bit 0 * __ffs: Find first bit set in word. Return 0 for bit 0
*/ */
static inline int __ffs(unsigned long x) static inline unsigned long __ffs(unsigned long x)
{ {
return 31 - __cntlz(x & -x); return 31 - __cntlz(x & -x);
} }