diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2014-04-30 14:22:19 -0700 |
|---|---|---|
| committer | Show Liu <show.liu@linaro.org> | 2014-06-18 12:02:55 +0800 |
| commit | 237f98851871e02f9b25a2926133537db6c858b5 (patch) | |
| tree | 0787474fd2c50c1fbd23003d10a42d3b57e2bcda /include/asm-generic | |
| parent | 0544fac90483207aa735cbf4655de2d6fcb38c95 (diff) | |
word-at-a-time: simplify big-endian zero_bytemask macro
This is simpler and cleaner. Depending on architecture, a smart
compiler may or may not generate the same code.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 789ce9dca8007ab5d7c72b9a174a29243817ac32)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/word-at-a-time.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-generic/word-at-a-time.h b/include/asm-generic/word-at-a-time.h index d96deb443f1..94f9ea8abca 100644 --- a/include/asm-generic/word-at-a-time.h +++ b/include/asm-generic/word-at-a-time.h @@ -50,7 +50,7 @@ static inline bool has_zero(unsigned long val, unsigned long *data, const struct } #ifndef zero_bytemask -#define zero_bytemask(mask) (~0ul << __fls(mask) << 1) +#define zero_bytemask(mask) (~1ul << __fls(mask)) #endif #endif /* _ASM_WORD_AT_A_TIME_H */ |