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authorTomas Winkler <tomas.winkler@intel.com>2018-10-19 21:22:47 +0300
committerJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2018-11-13 13:46:29 +0200
commit2ba5780ce30549cf57929b01d8cba6fe656e31c5 (patch)
tree991024bee7869f37e69fa1f42b04b1c6ea8ac8c7 /drivers/char/tpm
parent26b76320a8a550472bbb8f42257df83fcb8d8df6 (diff)
tpm: tpm_i2c_nuvoton: use correct command duration for TPM 2.x
tpm_i2c_nuvoton calculated commands duration using TPM 1.x values via tpm_calc_ordinal_duration() also for TPM 2.x chips. Call tpm2_calc_ordinal_duration() for retrieving ordinal duration for TPM 2.X chips. Cc: stable@vger.kernel.org Cc: Nayna Jain <nayna@linux.vnet.ibm.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Nayna Jain <nayna@linux.ibm.com> Tested-by: Nayna Jain <nayna@linux.ibm.com> (For TPM 2.0) Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/char/tpm')
-rw-r--r--drivers/char/tpm/tpm_i2c_nuvoton.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index caa86b19c76d..f74f451baf6a 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -369,6 +369,7 @@ static int i2c_nuvoton_send(struct tpm_chip *chip, u8 *buf, size_t len)
struct device *dev = chip->dev.parent;
struct i2c_client *client = to_i2c_client(dev);
u32 ordinal;
+ unsigned long duration;
size_t count = 0;
int burst_count, bytes2write, retries, rc = -EIO;
@@ -455,10 +456,12 @@ static int i2c_nuvoton_send(struct tpm_chip *chip, u8 *buf, size_t len)
return rc;
}
ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
- rc = i2c_nuvoton_wait_for_data_avail(chip,
- tpm_calc_ordinal_duration(chip,
- ordinal),
- &priv->read_queue);
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ duration = tpm2_calc_ordinal_duration(chip, ordinal);
+ else
+ duration = tpm_calc_ordinal_duration(chip, ordinal);
+
+ rc = i2c_nuvoton_wait_for_data_avail(chip, duration, &priv->read_queue);
if (rc) {
dev_err(dev, "%s() timeout command duration\n", __func__);
i2c_nuvoton_ready(chip);