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tpm: move tpm1_pcr_extend to tpm1-cmd.c 

Move tpm1_pcr_extend to tpm1-cmd.c and remove
unused pcrextend_header structure and
EXTEND_PCR_RESULT_SIZE and EXTEND_PCR_RESULT_BODY_SIZE
defines.

Fixes warning:
drivers/char/tpm/tpm-interface.c:609:38: warning: ‘pcrextend_header’ defined but not used [-Wunused-const-variable=]
 static const struct tpm_input_header pcrextend_header = {
                                      ^~~~~~~~~~~~~~~~

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Nayna Jain <nayna@linux.ibm.com>
Tested-by: Nayna Jain <nayna@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Tomas Winkler 2018-10-19 21:22:53 +03:00 committed by Jarkko Sakkinen
parent 70a3199a71
commit 1ad6640cd6
3 changed files with 23 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/char/tpm/tpm-interface.c
View File

@ -614,34 +614,6 @@ int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
}
EXPORT_SYMBOL_GPL(tpm_pcr_read);
#define TPM_ORD_PCR_EXTEND 20
#define EXTEND_PCR_RESULT_SIZE 34
#define EXTEND_PCR_RESULT_BODY_SIZE 20
static const struct tpm_input_header pcrextend_header = {
.tag = cpu_to_be16(TPM_TAG_RQU_COMMAND),
.length = cpu_to_be32(34),
.ordinal = cpu_to_be32(TPM_ORD_PCR_EXTEND)
};
static int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
char *log_msg)
{
struct tpm_buf buf;
int rc;
rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_PCR_EXTEND);
if (rc)
return rc;
tpm_buf_append_u32(&buf, pcr_idx);
tpm_buf_append(&buf, hash, TPM_DIGEST_SIZE);
rc = tpm_transmit_cmd(chip, NULL, buf.data, EXTEND_PCR_RESULT_SIZE,
EXTEND_PCR_RESULT_BODY_SIZE, 0, log_msg);
tpm_buf_destroy(&buf);
return rc;
}
/**
* tpm_pcr_extend - extend a PCR value in SHA1 bank.
* @chip: a &struct tpm_chip instance, %NULL for the default chip

2
drivers/char/tpm/tpm.h
View File

@ -549,6 +549,8 @@ int tpm_do_selftest(struct tpm_chip *chip);
int tpm1_get_timeouts(struct tpm_chip *chip);
unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
const char *log_msg);
unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm_pm_suspend(struct device *dev);
int tpm_pm_resume(struct device *dev);

21
drivers/char/tpm/tpm1-cmd.c
View File

@ -413,3 +413,24 @@ int tpm1_get_timeouts(struct tpm_chip *chip)
chip->flags |= TPM_CHIP_FLAG_HAVE_TIMEOUTS;
return 0;
}
#define TPM_ORD_PCR_EXTEND 20
int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
const char *log_msg)
{
struct tpm_buf buf;
int rc;
rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_PCR_EXTEND);
if (rc)
return rc;
tpm_buf_append_u32(&buf, pcr_idx);
tpm_buf_append(&buf, hash, TPM_DIGEST_SIZE);
rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE,
TPM_DIGEST_SIZE, 0, log_msg);
tpm_buf_destroy(&buf);
return rc;
}