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ima: Use tpm_default_chip() and call TPM functions with a tpm_chip

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Rather than accessing the TPM functions by passing a NULL pointer for
the tpm_chip, which causes a lookup for a suitable chip every time, get a
hold of a tpm_chip and access the TPM functions using it.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Stefan Berger
2018-06-26 15:09:32 -04:00
committed by Jarkko Sakkinen
parent 58bac8cc30
commit 5c2a640aff
4 changed files with 7 additions and 9 deletions
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2
security/integrity/ima/ima_crypto.c
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@@ -634,7 +634,7 @@ static void __init ima_pcrread(int idx, u8 *pcr)
if (!ima_used_chip)
return;
if (tpm_pcr_read(NULL, idx, pcr) != 0)
if (tpm_pcr_read(ima_tpm_chip, idx, pcr) != 0)
pr_err("Error Communicating to TPM chip\n");
}