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Subject[PATCH] tpm_tis: turn on TPM before calling tpm_get_timeouts
Date
With power gating moved out of the tpm_transmit code we need
to power on the TPM prior to calling tpm_get_timeouts.

Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Peter Huewe <peterhuewe@gmx.de>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-kernel@vger.kernel.org
Cc: linux-stable@vger.kernel.org
Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()")
Reported-by: Christian Bundy <christianbundy@fraction.io>
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
---
drivers/char/tpm/tpm_tis_core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index 270f43acbb77..cb101cec8f8b 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -974,13 +974,14 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
* to make sure it works. May as well use that command to set the
* proper timeouts for the driver.
*/
+ tpm_chip_start(chip);
if (tpm_get_timeouts(chip)) {
dev_err(dev, "Could not get TPM timeouts and durations\n");
rc = -ENODEV;
+ tpm_stop_chip(chip);
goto out_err;
}

- tpm_chip_start(chip);
chip->flags |= TPM_CHIP_FLAG_IRQ;
if (irq) {
tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED,
--
2.24.0
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