diff options
| author | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2016-06-17 13:12:20 +0200 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2016-09-15 16:04:21 +0300 |
| commit | 0c541332231e7957f23013e37f3720db33e7804c (patch) | |
| tree | b4259aac67199272cbbac3b688fa7a8c79137f12 /drivers/char | |
| parent | ae7e190a3e3498551a1e222eaa84c0ec7e5b41c7 (diff) | |
tpm: use tpm_pcr_read_dev() in tpm_do_selftest()
Instead of a ad-hoc protocol message construction it is better to
call tpm_pcr_read_dev().
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tpm/tpm-interface.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 6bffb13fb189..3edf2e8798ca 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -782,7 +782,7 @@ int tpm_do_selftest(struct tpm_chip *chip) unsigned int loops; unsigned int delay_msec = 100; unsigned long duration; - struct tpm_cmd_t cmd; + u8 dummy[TPM_DIGEST_SIZE]; duration = tpm_calc_ordinal_duration(chip, TPM_ORD_CONTINUE_SELFTEST); @@ -797,9 +797,8 @@ int tpm_do_selftest(struct tpm_chip *chip) do { /* Attempt to read a PCR value */ - cmd.header.in = pcrread_header; - cmd.params.pcrread_in.pcr_idx = cpu_to_be32(0); - rc = tpm_transmit(chip, (u8 *) &cmd, READ_PCR_RESULT_SIZE, 0); + rc = tpm_pcr_read_dev(chip, 0, dummy); + /* Some buggy TPMs will not respond to tpm_tis_ready() for * around 300ms while the self test is ongoing, keep trying * until the self test duration expires. */ @@ -814,7 +813,6 @@ int tpm_do_selftest(struct tpm_chip *chip) if (rc < TPM_HEADER_SIZE) return -EFAULT; - rc = be32_to_cpu(cmd.header.out.return_code); if (rc == TPM_ERR_DISABLED || rc == TPM_ERR_DEACTIVATED) { dev_info(&chip->dev, "TPM is disabled/deactivated (0x%X)\n", rc); |