tpm: tpm_i2c_nuvoton: use correct command duration for TPM 2.x

commit 2ba5780ce30549cf57929b01d8cba6fe656e31c5 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index caa86b1..f74f451 100644 (file)
--- 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);