Messages in this thread Patch in this message | | | From | Chin-Chun Chen <> | Subject | [PATCH v2] include/linux/bitops.h: Fix function fns | Date | Sun, 14 Apr 2024 00:15:27 +0800 |
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Modified the function fns to resolve a calculation error by reducing n first to correctly determine the n-th set bit instead of n+1.
This commit improves the accuracy and reliability of the code. --- Changes since v1: * Clarified the commit message. * Fixed the incorrect operation.
Signed-off-by: Chin-Chun Chen <chinchunchen2001@gmail.com> --- include/linux/bitops.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/bitops.h b/include/linux/bitops.h index 2ba557e067fe..5842d7d03f19 100644 --- a/include/linux/bitops.h +++ b/include/linux/bitops.h @@ -258,7 +258,7 @@ static inline unsigned long fns(unsigned long word, unsigned int n) while (word) { bit = __ffs(word); - if (n-- == 0) + if (--n == 0) return bit; __clear_bit(bit, &word); } base-commit: 8f2c057754b25075aa3da132cd4fd4478cdab854 -- 2.40.1
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