From 18c48899653fa7a04120537c228031b5c7e4e9d6 Mon Sep 17 00:00:00 2001 From: Yury Norov Date: Tue, 10 Mar 2026 16:53:02 -0400 Subject: lib: crypto: fix comments for count_leading_zeros() count_leading_zeros() is based on fls(), which is defined for x == 0, contrary to __ffs() family. The comment in crypto/mpi erroneously states that the function may return undef in such case. Fix the comment together with the outdated function signature, and now that COUNT_LEADING_ZEROS_0 is not referenced in the codebase, get rid of it too. Reviewed-by: Andy Shevchenko Acked-by: Eric Biggers Signed-off-by: Yury Norov --- include/linux/count_zeros.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/count_zeros.h b/include/linux/count_zeros.h index 5b8ff5ac660d..4e5680327ece 100644 --- a/include/linux/count_zeros.h +++ b/include/linux/count_zeros.h @@ -18,7 +18,7 @@ * * If the MSB of @x is set, the result is 0. * If only the LSB of @x is set, then the result is BITS_PER_LONG-1. - * If @x is 0 then the result is COUNT_LEADING_ZEROS_0. + * If @x is 0 then the result is BITS_PER_LONG. */ static inline int count_leading_zeros(unsigned long x) { @@ -28,8 +28,6 @@ static inline int count_leading_zeros(unsigned long x) return BITS_PER_LONG - fls64(x); } -#define COUNT_LEADING_ZEROS_0 BITS_PER_LONG - /** * count_trailing_zeros - Count the number of zeros from the LSB forwards * @x: The value -- cgit v1.2.3