diff options
| author | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2018-11-05 02:07:56 +0200 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2019-02-13 09:48:40 +0200 |
| commit | a3fbfae82b4cb3ff9928e29f34c64d0507cad874 (patch) | |
| tree | ebe97b36432fb956646a9a039fc7a3fdeae456ad /drivers/char/tpm/tpm_tis_core.c | |
| parent | 719b7d81f2048477f89f7303e2b4ddec8197e6e3 (diff) | |
tpm: take TPM chip power gating out of tpm_transmit()
Call tpm_chip_start() and tpm_chip_stop() in
* tpm_chip_register()
* tpm_class_shutdown()
* tpm_del_char_device()
* tpm_pm_suspend()
* tpm_try_get_ops() and tpm_put_ops()
* tpm2_del_space()
And remove these calls from tpm_transmit(). The core reason for this
change is that in tpm_vtpm_proxy a locality change requires a virtual
TPM command (a command made up just for that driver).
The consequence of this is that this commit removes the remaining nested
calls.
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>
Diffstat (limited to 'drivers/char/tpm/tpm_tis_core.c')
| -rw-r--r-- | drivers/char/tpm/tpm_tis_core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index c6b0c6d541a5..e33a10491f07 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -916,7 +916,11 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, intmask &= ~TPM_GLOBAL_INT_ENABLE; tpm_tis_write32(priv, TPM_INT_ENABLE(priv->locality), intmask); + rc = tpm_chip_start(chip, 0); + if (rc) + goto out_err; rc = tpm2_probe(chip); + tpm_chip_stop(chip, 0); if (rc) goto out_err; |