tpm1_pcr_read
rc = tpm1_pcr_read(chip, pcr_idx, digest->digest);
if (tpm1_pcr_read(chip, i, digest)) {
int tpm1_pcr_read(struct tpm_chip *chip, u32 pcr_idx, u8 *res_buf);
rc = tpm1_pcr_read(chip, 0, dummy);