ucs2_strsize
return ucs2_strsize(name, EFI_VAR_NAME_LEN) + 1;
data_size + ucs2_strsize(name, EFI_VAR_NAME_LEN));
desclength = ucs2_strsize((efi_char16_t *)(buffer + 6), len - 6) + 2;
unsigned long ucs2_strsize(const ucs2_char_t *data, unsigned long maxlength);
EXPORT_SYMBOL(ucs2_strsize);