1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_GENERIC_BITOPS_BUILTIN___FFS_H_ 3 #define _ASM_GENERIC_BITOPS_BUILTIN___FFS_H_ 4 5 /** 6 * __ffs - find first bit in word. 7 * @word: The word to search 8 * 9 * Undefined if no bit exists, so code should check against 0 first. 10 */ __ffs(unsigned long word)11static __always_inline unsigned long __ffs(unsigned long word) 12 { 13 return __builtin_ctzl(word); 14 } 15 16 #endif 17