#ifndef _ASM_GENERIC_BITOPS_BUILTIN___FFS_H_
  #define _ASM_GENERIC_BITOPS_BUILTIN___FFS_H_
  
  /**
   * __ffs - find first bit in word.
   * @word: The word to search
   *
   * Undefined if no bit exists, so code should check against 0 first.
   */
  static __always_inline unsigned long __ffs(unsigned long word)
  {
  	return __builtin_ctzl(word);
  }
  
  #endif