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tpm: add kdoc for tpm_transmit and tpm_transmit_cmd 

Functions tpm_transmit and transmit_cmd are referenced
from other functions kdoc hence deserve documentation.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
hifive-unleashed-5.1
Winkler, Tomas 2016-11-23 12:04:11 +02:00 committed by Jarkko Sakkinen
parent b25e67161c
commit f865c19685
1 changed files with 28 additions and 5 deletions
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33
drivers/char/tpm/tpm-interface.c
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@ -328,8 +328,17 @@ unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip,
}
EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);
/*
* Internal kernel interface to transmit TPM commands
/**
* tmp_transmit - Internal kernel interface to transmit TPM commands.
*
* @chip: TPM chip to use
* @buf: TPM command buffer
* @bufsiz: length of the TPM command buffer
* @flags: tpm transmit flags - bitmap
*
* Return:
* 0 when the operation is successful.
* A negative number for system errors (errno).
*/
ssize_t tpm_transmit(struct tpm_chip *chip, const u8 *buf, size_t bufsiz,
unsigned int flags)
@ -409,9 +418,21 @@ out:
return rc;
}
#define TPM_DIGEST_SIZE 20
#define TPM_RET_CODE_IDX 6
/**
* tmp_transmit_cmd - send a tpm command to the device
* The function extracts tpm out header return code
*
* @chip: TPM chip to use
* @cmd: TPM command buffer
* @len: length of the TPM command
* @flags: tpm transmit flags - bitmap
* @desc: command description used in the error message
*
* Return:
* 0 when the operation is successful.
* A negative number for system errors (errno).
* A positive number for a TPM error.
*/
ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *cmd,
int len, unsigned int flags, const char *desc)
{
@ -434,6 +455,8 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *cmd,
return err;
}
#define TPM_DIGEST_SIZE 20
#define TPM_RET_CODE_IDX 6
#define TPM_INTERNAL_RESULT_SIZE 200
#define TPM_ORD_GET_CAP cpu_to_be32(101)
#define TPM_ORD_GET_RANDOM cpu_to_be32(70)