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tpm: access command header through struct in tpm_try_transmit() 

Instead of accessing fields of the command header through offsets to
the raw buffer, it is a better idea to use the header struct pointer
that is already used elsewhere in the function.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Tested-by: Alexander Steffen <Alexander.Steffen@infineon.com>
This commit is contained in:
Jarkko Sakkinen 2018-11-03 02:31:07 +02:00
parent b34b77a99b
commit 720b071102
1 changed files with 2 additions and 2 deletions
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4
drivers/char/tpm/tpm-interface.c
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@ -187,8 +187,8 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip, struct tpm_space *space,
if (bufsiz > TPM_BUFSIZE) if (bufsiz > TPM_BUFSIZE)
bufsiz = TPM_BUFSIZE; bufsiz = TPM_BUFSIZE;
count = be32_to_cpu(*((__be32 *) (buf + 2))); count = be32_to_cpu(header->length);
ordinal = be32_to_cpu(*((__be32 *) (buf + 6))); ordinal = be32_to_cpu(header->ordinal);
if (count == 0) if (count == 0)
return -ENODATA; return -ENODATA;
if (count > bufsiz) { if (count > bufsiz) {