The result of __ffs is undefined if the word is zero. Therefore, it should be guaranteed that at least one of the 100 bits is set. Signed-off-by: Eddie Lin <eddielin0926@xxxxxxxxx> --- arch/alpha/include/asm/bitops.h | 4 ++-- include/asm-generic/bitops/sched.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/alpha/include/asm/bitops.h b/arch/alpha/include/asm/bitops.h index e1d8483a4..9af3528f5 100644 --- a/arch/alpha/include/asm/bitops.h +++ b/arch/alpha/include/asm/bitops.h @@ -434,8 +434,8 @@ static inline unsigned int __arch_hweight8(unsigned int w) /* * Every architecture must define this function. It's the fastest - * way of searching a 100-bit bitmap. It's guaranteed that at least - * one of the 100 bits is cleared. + * way of searching a 100-bit bitmap. It's guaranteed that at least + * one of the 100 bits is set. */ static inline unsigned long sched_find_first_bit(const unsigned long b[2]) diff --git a/include/asm-generic/bitops/sched.h b/include/asm-generic/bitops/sched.h index 86470cfce..2b614eb40 100644 --- a/include/asm-generic/bitops/sched.h +++ b/include/asm-generic/bitops/sched.h @@ -7,8 +7,8 @@ /* * Every architecture must define this function. It's the fastest - * way of searching a 100-bit bitmap. It's guaranteed that at least - * one of the 100 bits is cleared. + * way of searching a 100-bit bitmap. It's guaranteed that at least + * one of the 100 bits is set. */ static inline int sched_find_first_bit(const unsigned long *b) { -- 2.25.1