low_16_bits
sub_minor = low_16_bits(fw_ver);
raw_inode->i_uid_low = cpu_to_le16(low_16_bits(uid));
raw_inode->i_gid_low = cpu_to_le16(low_16_bits(gid));
raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
raw_inode->i_gid_low = cpu_to_le16(low_16_bits(i_gid));