[PATCH v7 01/21] tpm: tpm_i2c_nuvoton: use correct command duration for TPM 2.x

From: Tomas Winkler <tomas.winkler@intel.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
	Jason Gunthorpe <jgg@ziepe.ca>
Cc: Nayna Jain <nayna@linux.vnet.ibm.com>,
	Alexander Usyskin <alexander.usyskin@intel.com>,
	Tadeusz Struk <tadeusz.struk@intel.com>,
	linux-integrity@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Tomas Winkler <tomas.winkler@intel.com>,
	stable@vger.kernel.org
Subject: [PATCH v7 01/21] tpm: tpm_i2c_nuvoton: use correct command duration for TPM 2.x
Date: Fri, 19 Oct 2018 21:22:47 +0300	[thread overview]
Message-ID: <20181019182307.17745-2-tomas.winkler@intel.com> (raw)
In-Reply-To: <20181019182307.17745-1-tomas.winkler@intel.com>

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)
---
V7: new in the series.

 drivers/char/tpm/tpm_i2c_nuvoton.c | 11 +++++++----
 1 file 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);
-- 
2.14.4

