--- mimi.txt	2008-12-04 14:02:00.000000000 -0800
+++ mimi1.txt	2008-12-04 14:03:07.000000000 -0800
@@ -1,19 +1,18 @@
 +/**
-+ * tpm_pcr_read - read a pcr value
++ * tpm_pcr_extend - extend pcr value with hash
 + * @chip_id: 	tpm chip identifier
 + * 		Upper 2 bytes: ANY, HW_ONLY or SW_ONLY
 + * 		Lower 2 bytes: tpm idx # or AN&
-+ * @pcr_idx:	pcr idx to retrieve
-+ * @res_buf: 	TPM_PCR value
-+ * 		size of res_buf is 20 bytes (or NULL if you don't care)
++ * @pcr_idx:	pcr idx to extend
++ * @hash: 	hash value used to extend pcr value
 + *
 + * The TPM driver should be built-in, but for whatever reason it
 + * isn't, protect against the chip disappearing, by incrementing
 + * the module usage count.
 + */
-+int tpm_pcr_read(u32 chip_id, int pcr_idx, u8 *res_buf)
++int tpm_pcr_extend(u32 chip_id, int pcr_idx, const u8 *hash)
 +{
-+	u8 data[READ_PCR_RESULT_SIZE];
++	u8 data[EXTEND_PCR_SIZE];
 +	int rc;
 +	__be32 index;
 +	int chip_num = chip_id & TPM_CHIP_NUM_MASK;
@@ -31,17 +30,15 @@
 +	}
 +	rcu_read_unlock();
 +
-+	BUILD_BUG_ON(sizeof(pcrread) > READ_PCR_RESULT_SIZE);
-+	memcpy(data, pcrread, sizeof(pcrread));
++	BUILD_BUG_ON(sizeof(pcrextend) > EXTEND_PCR_SIZE);
++	memcpy(data, pcrextend, sizeof(pcrextend));
 +	index = cpu_to_be32(pcr_idx);
 +	memcpy(data + 10, &index, 4);
++	memcpy(data + 14, hash, TPM_DIGEST_SIZE);
 +	rc = tpm_transmit(chip, data, sizeof(data));
 +	if (rc > 0)
 +		rc = get_unaligned_be32((__be32 *) (data + 6));
 +
-+	if (rc == 0 && res_buf)
-+		memcpy(res_buf, data + 10, TPM_DIGEST_SIZE);
-+
 +	module_put(chip->dev->driver->owner);
 +	return rc;
 +}