[PATCH v16 11/38] tpm/tpm_tis: Close all localities
Ross Philipson <[email protected]>
| Newsgroups | org.kernel.vger.linux-integrity,dev.linux.lists.iommu,org.infradead.lists.kexec,org.kernel.vger.linux-crypto,org.kernel.vger.linux-doc,org.kernel.vger.linux-efi,org.kernel.vger.linux-kernel |
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| Message-ID | <[email protected]> |
From: "Daniel P. Smith" <[email protected]> Close all the localities while initializing the TPM driver. The addition of TCG DRTM support requires this. Co-developed-by: Jarkko Sakkinen <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]> Signed-off-by: Daniel P. Smith <[email protected]> Signed-off-by: Ross Philipson <[email protected]> --- drivers/char/tpm/tpm_tis_core.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index e2a1769081b1..1fbb74a565f4 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -1111,7 +1111,7 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, u32 intmask; u32 clkrun_val; u8 rid; - int rc, probe; + int rc, probe, i; struct tpm_chip *chip; chip = tpmm_chip_alloc(dev, &tpm_tis); @@ -1176,6 +1176,15 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, goto out_err; } + /* + * In order to comply with the TCG DRTM specification, relinquish all + * the localities. + */ + for (i = 0; i <= TPM_MAX_LOCALITY; i++) { + if (check_locality(chip, i)) + tpm_tis_relinquish_locality(chip, i); + } + /* Take control of the TPM's interrupt hardware and shut it off */ rc = tpm_tis_read32(priv, TPM_INT_ENABLE(priv->locality), &intmask); if (rc < 0) -- 2.47.3