write_sysfs_int
ret = write_sysfs_int(ent->d_name, evdir,
ret = write_sysfs_int(ent->d_name, scanelemdir,
ret = write_sysfs_int("enable", buf_dir_name, 0);
ret = write_sysfs_int("length", buf_dir_name, buf_len);
ret = write_sysfs_int("enable", buf_dir_name, 1);
int write_sysfs_int(const char *filename, const char *basedir, int val);