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authorH. Peter Anvin <hpa@zytor.com>2014-04-30 14:22:19 -0700
committerMark Brown <broonie@linaro.org>2014-05-21 17:59:31 +0100
commit8c8e31f98cae35666e0e619115ab1e1fc80b1835 (patch)
tree7721c30a260b5b4e966ea2f507686d6b5e878f28
parent68813d8f7e4554f5e2a97e66c4cb7dcacfcc6ade (diff)
downloadlinux-linaro-stable-v3.10/topic/arm64-be.tar.gz
word-at-a-time: simplify big-endian zero_bytemask macrov3.10/topic/arm64-be
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: Mark Brown <broonie@linaro.org>
-rw-r--r--include/asm-generic/word-at-a-time.h2
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 d96deb4..94f9ea8 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 */