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authorStefan Berger <stefanb@linux.ibm.com>2024-10-14 10:16:43 -0400
committerJarkko Sakkinen <jarkko@kernel.org>2024-11-22 00:48:26 +0200
commit02e9bda80d66cdd53364b9b32166ac0be1ced58f (patch)
tree3f018435cb9adecb1dd9f6cfe5ee675b12c2e5ea /drivers/char
parent341d041daae52cd5f014f68c1c7d9039db818fca (diff)
downloadlwn-02e9bda80d66cdd53364b9b32166ac0be1ced58f.tar.gz
lwn-02e9bda80d66cdd53364b9b32166ac0be1ced58f.zip
tpm: ibmvtpm: Set TPM_OPS_AUTO_STARTUP flag on driver
Set the TPM_OPS_AUTO_STARTUP on the driver so that the ibmvtpm driver now uses tpm2_auto_startup and tpm1_auto_startup like many other drivers do. Remove tpm_get_timeouts, tpm2_get_cc_attrs_tbl, and tpm2_sessions_init calls from it since these will all be called in tpm2_auto_startup and tpm1_auto_startup. The exporting of the tpm2_session_init symbol was only necessary while the ibmvtpm driver was calling this function. Since this is not the case anymore, remove this symbol from being exported. What is new for the ibmvtpm driver is that now tpm2_do_selftest and tpm1_do_selftest will be called that send commands to the TPM to perform or continue its selftest. However, the firmware should already have sent these commands so that the TPM will not do much work at this time. Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/tpm/tpm2-sessions.c1
-rw-r--r--drivers/char/tpm/tpm_ibmvtpm.c15
2 files changed, 1 insertions, 15 deletions
diff --git a/drivers/char/tpm/tpm2-sessions.c b/drivers/char/tpm/tpm2-sessions.c
index b0f13c8ea79c..b70165b588ec 100644
--- a/drivers/char/tpm/tpm2-sessions.c
+++ b/drivers/char/tpm/tpm2-sessions.c
@@ -1390,5 +1390,4 @@ int tpm2_sessions_init(struct tpm_chip *chip)
return rc;
}
-EXPORT_SYMBOL(tpm2_sessions_init);
#endif /* CONFIG_TCG_TPM2_HMAC */
diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
index 1e5b107d1f3b..76d048f63d55 100644
--- a/drivers/char/tpm/tpm_ibmvtpm.c
+++ b/drivers/char/tpm/tpm_ibmvtpm.c
@@ -450,6 +450,7 @@ static bool tpm_ibmvtpm_req_canceled(struct tpm_chip *chip, u8 status)
}
static const struct tpm_class_ops tpm_ibmvtpm = {
+ .flags = TPM_OPS_AUTO_STARTUP,
.recv = tpm_ibmvtpm_recv,
.send = tpm_ibmvtpm_send,
.cancel = tpm_ibmvtpm_cancel,
@@ -690,20 +691,6 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
if (!strcmp(id->compat, "IBM,vtpm20"))
chip->flags |= TPM_CHIP_FLAG_TPM2;
- rc = tpm_get_timeouts(chip);
- if (rc)
- goto init_irq_cleanup;
-
- if (chip->flags & TPM_CHIP_FLAG_TPM2) {
- rc = tpm2_get_cc_attrs_tbl(chip);
- if (rc)
- goto init_irq_cleanup;
-
- rc = tpm2_sessions_init(chip);
- if (rc)
- goto init_irq_cleanup;
- }
-
return tpm_chip_register(chip);
init_irq_cleanup:
do {