Re: [PATCH v7 17/17] tpm: remove @flags from tpm_transmit()

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On 11/13/18 1:36 PM, Jarkko Sakkinen wrote:
Remove @flags from tpm_transmit() API. It is no longer used for
anything.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>

Reviewed-by: Stefan Berger <stefanb@xxxxxxxxxxxxx>


---
  drivers/char/tpm/tpm-chip.c       | 32 ++++++++++-----------
  drivers/char/tpm/tpm-dev-common.c |  2 +-
  drivers/char/tpm/tpm-interface.c  | 18 ++++--------
  drivers/char/tpm/tpm-sysfs.c      |  2 +-
  drivers/char/tpm/tpm.h            | 13 ++++-----
  drivers/char/tpm/tpm1-cmd.c       | 14 ++++-----
  drivers/char/tpm/tpm2-cmd.c       | 48 ++++++++++++++-----------------
  drivers/char/tpm/tpm2-space.c     | 16 +++++------
  drivers/char/tpm/tpm_vtpm_proxy.c |  2 +-
  9 files changed, 65 insertions(+), 82 deletions(-)

diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 87570182f75e..46aa68756bac 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -37,7 +37,7 @@ struct class *tpm_class;
  struct class *tpmrm_class;
  dev_t tpm_devt;

-static int tpm_request_locality(struct tpm_chip *chip, unsigned int flags)
+static int tpm_request_locality(struct tpm_chip *chip)
  {
  	int rc;

@@ -52,7 +52,7 @@ static int tpm_request_locality(struct tpm_chip *chip, unsigned int flags)
  	return 0;
  }

-static void tpm_relinquish_locality(struct tpm_chip *chip, unsigned int flags)
+static void tpm_relinquish_locality(struct tpm_chip *chip)
  {
  	int rc;

@@ -66,7 +66,7 @@ static void tpm_relinquish_locality(struct tpm_chip *chip, unsigned int flags)
  	chip->locality = -1;
  }

-static int tpm_cmd_ready(struct tpm_chip *chip, unsigned int flags)
+static int tpm_cmd_ready(struct tpm_chip *chip)
  {
  	if (!chip->ops->cmd_ready)
  		return 0;
@@ -74,7 +74,7 @@ static int tpm_cmd_ready(struct tpm_chip *chip, unsigned int flags)
  	return chip->ops->cmd_ready(chip);
  }

-static int tpm_go_idle(struct tpm_chip *chip, unsigned int flags)
+static int tpm_go_idle(struct tpm_chip *chip)
  {
  	if (!chip->ops->go_idle)
  		return 0;
@@ -85,13 +85,12 @@ static int tpm_go_idle(struct tpm_chip *chip, unsigned int flags)
  /**
   * tpm_chip_start() - power on the TPM
   * @chip:	a TPM chip to use
- * @flags:	TPM transmit flags
   *
   * Return:
   * * The response length	- OK
   * * -errno			- A system error
   */
-int tpm_chip_start(struct tpm_chip *chip, unsigned int flags)
+int tpm_chip_start(struct tpm_chip *chip)
  {
  	int ret;

@@ -99,16 +98,16 @@ int tpm_chip_start(struct tpm_chip *chip, unsigned int flags)
  		chip->ops->clk_enable(chip, true);

  	if (chip->locality == -1) {
-		ret = tpm_request_locality(chip, flags);
+		ret = tpm_request_locality(chip);
  		if (ret) {
  			chip->ops->clk_enable(chip, false);
  			return ret;
  		}
  	}

-	ret = tpm_cmd_ready(chip, flags);
+	ret = tpm_cmd_ready(chip);
  	if (ret) {
-		tpm_relinquish_locality(chip, flags);
+		tpm_relinquish_locality(chip);
  		if (chip->ops->clk_enable)
  			chip->ops->clk_enable(chip, false);
  		return ret;
@@ -120,16 +119,15 @@ int tpm_chip_start(struct tpm_chip *chip, unsigned int flags)
  /**
   * tpm_chip_stop() - power off the TPM
   * @chip:	a TPM chip to use
- * @flags:	TPM transmit flags
   *
   * Return:
   * * The response length	- OK
   * * -errno			- A system error
   */
-void tpm_chip_stop(struct tpm_chip *chip, unsigned int flags)
+void tpm_chip_stop(struct tpm_chip *chip)
  {
-	tpm_go_idle(chip, flags);
-	tpm_relinquish_locality(chip, flags);
+	tpm_go_idle(chip);
+	tpm_relinquish_locality(chip);
  	if (chip->ops->clk_enable)
  		chip->ops->clk_enable(chip, false);
  }
@@ -157,7 +155,7 @@ int tpm_try_get_ops(struct tpm_chip *chip)
  		goto out_lock;

  	mutex_lock(&chip->tpm_mutex);
-	return tpm_chip_start(chip, 0);
+	return tpm_chip_start(chip);
  out_lock:
  	up_read(&chip->ops_sem);
  	put_device(&chip->dev);
@@ -174,7 +172,7 @@ EXPORT_SYMBOL_GPL(tpm_try_get_ops);
   */
  void tpm_put_ops(struct tpm_chip *chip)
  {
-	tpm_chip_stop(chip, 0);
+	tpm_chip_stop(chip);
  	mutex_unlock(&chip->tpm_mutex);
  	up_read(&chip->ops_sem);
  	put_device(&chip->dev);
@@ -552,11 +550,11 @@ int tpm_chip_register(struct tpm_chip *chip)
  {
  	int rc;

-	rc = tpm_chip_start(chip, 0);
+	rc = tpm_chip_start(chip);
  	if (rc)
  		return rc;
  	rc = tpm_auto_startup(chip);
-	tpm_chip_stop(chip, 0);
+	tpm_chip_stop(chip);
  	if (rc)
  		return rc;

diff --git a/drivers/char/tpm/tpm-dev-common.c b/drivers/char/tpm/tpm-dev-common.c
index 582caefcf19b..024229a08876 100644
--- a/drivers/char/tpm/tpm-dev-common.c
+++ b/drivers/char/tpm/tpm-dev-common.c
@@ -47,7 +47,7 @@ static ssize_t tpm_dev_transmit(struct tpm_chip *chip, struct tpm_space *space,
  	if (ret)
  		goto out_lock;

-	len = tpm_transmit(chip, buf, bufsiz, 0);
+	len = tpm_transmit(chip, buf, bufsiz);
  	if (len < 0)
  		ret = len;

diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 5c04c0d9aaba..5e3d5e95ea46 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -62,8 +62,7 @@ unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal)
  }
  EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);

-static ssize_t tpm_try_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
-				unsigned int flags)
+static ssize_t tpm_try_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz)
  {
  	struct tpm_header *header = (void *)buf;
  	int rc;
@@ -134,7 +133,6 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
   * @chip:	a TPM chip to use
   * @buf:	a TPM command buffer
   * @bufsiz:	length of the TPM command buffer
- * @flags:	TPM transmit flags
   *
   * A wrapper around tpm_try_transmit() that handles TPM2_RC_RETRY returns from
   * the TPM and retransmits the command after a delay up to a maximum wait of
@@ -147,8 +145,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
   * * The response length	- OK
   * * -errno			- A system error
   */
-ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
-		     unsigned int flags)
+ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz)
  {
  	struct tpm_header *header = (struct tpm_header *)buf;
  	/* space for header and handles */
@@ -168,7 +165,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
  	memcpy(save, buf, save_size);

  	for (;;) {
-		ret = tpm_try_transmit(chip, buf, bufsiz, flags);
+		ret = tpm_try_transmit(chip, buf, bufsiz);

  		rc = be32_to_cpu(header->return_code);
  		if (rc != TPM2_RC_RETRY && rc != TPM2_RC_TESTING)
@@ -200,7 +197,6 @@ ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
   * @chip:			a TPM chip to use
   * @buf:			a TPM command buffer
   * @min_rsp_body_length:	minimum expected length of response body
- * @flags:			TPM transmit flags
   * @desc:			command description used in the error message
   *
   * Return:
@@ -209,14 +205,13 @@ ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
   * * TPM_RC	- A TPM error
   */
  ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_buf *buf,
-			 size_t min_rsp_body_length, unsigned int flags,
-			 const char *desc)
+			 size_t min_rsp_body_length, const char *desc)
  {
  	const struct tpm_header *header = (struct tpm_header *)buf->data;
  	int err;
  	ssize_t len;

-	len = tpm_transmit(chip, buf->data, PAGE_SIZE, flags);
+	len = tpm_transmit(chip, buf->data, PAGE_SIZE);
  	if (len <  0)
  		return len;

@@ -365,8 +360,7 @@ int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen)
  		goto out;

  	memcpy(buf.data, cmd, buflen);
-	rc = tpm_transmit_cmd(chip, &buf, 0, 0,
-			      "attempting to a send a command");
+	rc = tpm_transmit_cmd(chip, &buf, 0, "attempting to a send a command");
  	tpm_buf_destroy(&buf);
  out:
  	tpm_put_ops(chip);
diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
index 3733491671ca..533a260d744e 100644
--- a/drivers/char/tpm/tpm-sysfs.c
+++ b/drivers/char/tpm/tpm-sysfs.c
@@ -55,7 +55,7 @@ static ssize_t pubek_show(struct device *dev, struct device_attribute *attr,
  	tpm_buf_append(&tpm_buf, anti_replay, sizeof(anti_replay));

  	if (tpm_transmit_cmd(chip, &tpm_buf, READ_PUBEK_RESULT_MIN_BODY_SIZE,
-			      0, "attempting to read the PUBEK"))
+			     "attempting to read the PUBEK"))
  		goto out_buf;

  	out = (struct tpm_readpubek_out *)&tpm_buf.data[10];
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index f9d56dfd0d20..6121663b7e9f 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -485,11 +485,9 @@ extern const struct file_operations tpm_fops;
  extern const struct file_operations tpmrm_fops;
  extern struct idr dev_nums_idr;

-ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
-		     unsigned int flags);
+ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz);
  ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_buf *buf,
-			 size_t min_rsp_body_length, unsigned int flags,
-			 const char *desc);
+			 size_t min_rsp_body_length, const char *desc);
  int tpm_get_timeouts(struct tpm_chip *);
  int tpm_auto_startup(struct tpm_chip *chip);

@@ -514,8 +512,8 @@ static inline void tpm_msleep(unsigned int delay_msec)
  		     delay_msec * 1000);
  };

-int tpm_chip_start(struct tpm_chip *chip, unsigned int flags);
-void tpm_chip_stop(struct tpm_chip *chip, unsigned int flags);
+int tpm_chip_start(struct tpm_chip *chip);
+void tpm_chip_stop(struct tpm_chip *chip);
  struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip);
  __must_check int tpm_try_get_ops(struct tpm_chip *chip);
  void tpm_put_ops(struct tpm_chip *chip);
@@ -548,8 +546,7 @@ int tpm2_pcr_read(struct tpm_chip *chip, u32 pcr_idx, u8 *res_buf);
  int tpm2_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, u32 count,
  		    struct tpm2_digest *digests);
  int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max);
-void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
-			    unsigned int flags);
+void tpm2_flush_context(struct tpm_chip *chip, u32 handle);
  int tpm2_seal_trusted(struct tpm_chip *chip,
  		      struct trusted_key_payload *payload,
  		      struct trusted_key_options *options);
diff --git a/drivers/char/tpm/tpm1-cmd.c b/drivers/char/tpm/tpm1-cmd.c
index 162c255dd131..438c14106e19 100644
--- a/drivers/char/tpm/tpm1-cmd.c
+++ b/drivers/char/tpm/tpm1-cmd.c
@@ -334,7 +334,7 @@ static int tpm1_startup(struct tpm_chip *chip)

  	tpm_buf_append_u16(&buf, TPM_ST_CLEAR);

-	rc = tpm_transmit_cmd(chip, &buf, 0, 0, "attempting to start the TPM");
+	rc = tpm_transmit_cmd(chip, &buf, 0, "attempting to start the TPM");
  	tpm_buf_destroy(&buf);
  	return rc;
  }
@@ -459,7 +459,7 @@ int tpm1_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, const u8 *hash,
  	tpm_buf_append_u32(&buf, pcr_idx);
  	tpm_buf_append(&buf, hash, TPM_DIGEST_SIZE);

-	rc = tpm_transmit_cmd(chip, &buf, TPM_DIGEST_SIZE, 0, log_msg);
+	rc = tpm_transmit_cmd(chip, &buf, TPM_DIGEST_SIZE, log_msg);
  	tpm_buf_destroy(&buf);
  	return rc;
  }
@@ -489,7 +489,7 @@ ssize_t tpm1_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
  		tpm_buf_append_u32(&buf, 4);
  		tpm_buf_append_u32(&buf, subcap_id);
  	}
-	rc = tpm_transmit_cmd(chip, &buf, min_cap_length, 0, desc);
+	rc = tpm_transmit_cmd(chip, &buf, min_cap_length, desc);
  	if (!rc)
  		*cap = *(cap_t *)&buf.data[TPM_HEADER_SIZE + 4];
  	tpm_buf_destroy(&buf);
@@ -530,7 +530,7 @@ int tpm1_get_random(struct tpm_chip *chip, u8 *dest, size_t max)
  	do {
  		tpm_buf_append_u32(&buf, num_bytes);

-		rc = tpm_transmit_cmd(chip, &buf, sizeof(out->rng_data_len), 0,
+		rc = tpm_transmit_cmd(chip, &buf, sizeof(out->rng_data_len),
  				      "attempting get random");
  		if (rc)
  			goto out;
@@ -575,7 +575,7 @@ int tpm1_pcr_read(struct tpm_chip *chip, u32 pcr_idx, u8 *res_buf)

  	tpm_buf_append_u32(&buf, pcr_idx);

-	rc = tpm_transmit_cmd(chip, &buf, TPM_DIGEST_SIZE, 0,
+	rc = tpm_transmit_cmd(chip, &buf, TPM_DIGEST_SIZE,
  			      "attempting to read a pcr value");
  	if (rc)
  		goto out;
@@ -609,7 +609,7 @@ static int tpm1_continue_selftest(struct tpm_chip *chip)
  	if (rc)
  		return rc;

-	rc = tpm_transmit_cmd(chip, &buf, 0, 0, "continue selftest");
+	rc = tpm_transmit_cmd(chip, &buf, 0, "continue selftest");
  	tpm_buf_destroy(&buf);
  	return rc;
  }
@@ -735,7 +735,7 @@ int tpm1_pm_suspend(struct tpm_chip *chip, u32 tpm_suspend_pcr)
  		return rc;
  	/* now do the actual savestate */
  	for (try = 0; try < TPM_RETRY; try++) {
-		rc = tpm_transmit_cmd(chip, &buf, 0, 0, NULL);
+		rc = tpm_transmit_cmd(chip, &buf, 0, NULL);
  		/*
  		 * If the TPM indicates that it is too busy to respond to
  		 * this command then retry before giving up.  It can take
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index d6abc964ef66..971d46efaca5 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -197,7 +197,7 @@ int tpm2_pcr_read(struct tpm_chip *chip, u32 pcr_idx, u8 *res_buf)
  	tpm_buf_append(&buf, (const unsigned char *)pcr_select,
  		       sizeof(pcr_select));

-	rc = tpm_transmit_cmd(chip, &buf, 0, 0, res_buf ?
+	rc = tpm_transmit_cmd(chip, &buf, 0, res_buf ?
  			      "attempting to read a pcr value" : NULL);
  	if (rc == 0 && res_buf) {
  		out = (struct tpm2_pcr_read_out *)&buf.data[TPM_HEADER_SIZE];
@@ -264,8 +264,7 @@ int tpm2_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, u32 count,
  		}
  	}

-	rc = tpm_transmit_cmd(chip, &buf, 0, 0,
-			      "attempting extend a PCR value");
+	rc = tpm_transmit_cmd(chip, &buf, 0, "attempting extend a PCR value");

  	tpm_buf_destroy(&buf);

@@ -312,7 +311,7 @@ int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max)
  		err = tpm_transmit_cmd(chip, &buf,
  				       offsetof(struct tpm2_get_random_out,
  						buffer),
-				       0, "attempting get random");
+				       "attempting get random");
  		if (err)
  			goto out;

@@ -341,14 +340,11 @@ int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max)
  }

  /**
- * tpm2_flush_context_cmd() - execute a TPM2_FlushContext command
+ * tpm2_flush_context() - execute a TPM2_FlushContext command
   * @chip:	TPM chip to use
   * @handle:	context handle
- * @flags:	tpm transmit flags - bitmap
- *
   */
-void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
-			    unsigned int flags)
+void tpm2_flush_context(struct tpm_chip *chip, u32 handle)
  {
  	struct tpm_buf buf;
  	int rc;
@@ -362,7 +358,7 @@ void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,

  	tpm_buf_append_u32(&buf, handle);

-	tpm_transmit_cmd(chip, &buf, 0, flags, "flushing context");
+	tpm_transmit_cmd(chip, &buf, 0, "flushing context");
  	tpm_buf_destroy(&buf);
  }

@@ -476,7 +472,7 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
  		goto out;
  	}

-	rc = tpm_transmit_cmd(chip, &buf, 4, 0, "sealing data");
+	rc = tpm_transmit_cmd(chip, &buf, 4, "sealing data");
  	if (rc)
  		goto out;

@@ -513,7 +509,6 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
   * @payload: the key data in clear and encrypted form
   * @options: authentication values and other options
   * @blob_handle: returned blob handle
- * @flags: tpm transmit flags
   *
   * Return: 0 on success.
   *        -E2BIG on wrong payload size.
@@ -523,7 +518,7 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
  static int tpm2_load_cmd(struct tpm_chip *chip,
  			 struct trusted_key_payload *payload,
  			 struct trusted_key_options *options,
-			 u32 *blob_handle, unsigned int flags)
+			 u32 *blob_handle)
  {
  	struct tpm_buf buf;
  	unsigned int private_len;
@@ -558,7 +553,7 @@ static int tpm2_load_cmd(struct tpm_chip *chip,
  		goto out;
  	}

-	rc = tpm_transmit_cmd(chip, &buf, 4, flags, "loading blob");
+	rc = tpm_transmit_cmd(chip, &buf, 4, "loading blob");
  	if (!rc)
  		*blob_handle = be32_to_cpup(
  			(__be32 *) &buf.data[TPM_HEADER_SIZE]);
@@ -579,7 +574,6 @@ static int tpm2_load_cmd(struct tpm_chip *chip,
   * @payload: the key data in clear and encrypted form
   * @options: authentication values and other options
   * @blob_handle: blob handle
- * @flags: tpm_transmit_cmd flags
   *
   * Return: 0 on success
   *         -EPERM on tpm error status
@@ -588,7 +582,7 @@ static int tpm2_load_cmd(struct tpm_chip *chip,
  static int tpm2_unseal_cmd(struct tpm_chip *chip,
  			   struct trusted_key_payload *payload,
  			   struct trusted_key_options *options,
-			   u32 blob_handle, unsigned int flags)
+			   u32 blob_handle)
  {
  	struct tpm_buf buf;
  	u16 data_len;
@@ -608,7 +602,7 @@ static int tpm2_unseal_cmd(struct tpm_chip *chip,
  			     options->blobauth /* hmac */,
  			     TPM_DIGEST_SIZE);

-	rc = tpm_transmit_cmd(chip, &buf, 6, flags, "unsealing");
+	rc = tpm_transmit_cmd(chip, &buf, 6, "unsealing");
  	if (rc > 0)
  		rc = -EPERM;

@@ -652,12 +646,12 @@ int tpm2_unseal_trusted(struct tpm_chip *chip,
  	u32 blob_handle;
  	int rc;

-	rc = tpm2_load_cmd(chip, payload, options, &blob_handle, 0);
+	rc = tpm2_load_cmd(chip, payload, options, &blob_handle);
  	if (rc)
  		return rc;

-	rc = tpm2_unseal_cmd(chip, payload, options, blob_handle, 0);
-	tpm2_flush_context_cmd(chip, blob_handle, 0);
+	rc = tpm2_unseal_cmd(chip, payload, options, blob_handle);
+	tpm2_flush_context(chip, blob_handle);
  	return rc;
  }

@@ -693,7 +687,7 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,  u32 *value,
  	tpm_buf_append_u32(&buf, TPM2_CAP_TPM_PROPERTIES);
  	tpm_buf_append_u32(&buf, property_id);
  	tpm_buf_append_u32(&buf, 1);
-	rc = tpm_transmit_cmd(chip, &buf, 0, 0, NULL);
+	rc = tpm_transmit_cmd(chip, &buf, 0, NULL);
  	if (!rc) {
  		out = (struct tpm2_get_cap_out *)
  			&buf.data[TPM_HEADER_SIZE];
@@ -723,7 +717,7 @@ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type)
  	if (rc)
  		return;
  	tpm_buf_append_u16(&buf, shutdown_type);
-	tpm_transmit_cmd(chip, &buf, 0, 0, "stopping the TPM");
+	tpm_transmit_cmd(chip, &buf, 0, "stopping the TPM");
  	tpm_buf_destroy(&buf);
  }

@@ -752,7 +746,7 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
  			return rc;

  		tpm_buf_append_u8(&buf, full);
-		rc = tpm_transmit_cmd(chip, &buf, 0, 0,
+		rc = tpm_transmit_cmd(chip, &buf, 0,
  				      "attempting the self test");
  		tpm_buf_destroy(&buf);

@@ -789,7 +783,7 @@ int tpm2_probe(struct tpm_chip *chip)
  	tpm_buf_append_u32(&buf, TPM2_CAP_TPM_PROPERTIES);
  	tpm_buf_append_u32(&buf, TPM_PT_TOTAL_COMMANDS);
  	tpm_buf_append_u32(&buf, 1);
-	rc = tpm_transmit_cmd(chip, &buf, 0, 0, NULL);
+	rc = tpm_transmit_cmd(chip, &buf, 0, NULL);
  	/* We ignore TPM return codes on purpose. */
  	if (rc >=  0) {
  		out = (struct tpm_header *)buf.data;
@@ -828,7 +822,7 @@ static ssize_t tpm2_get_pcr_allocation(struct tpm_chip *chip)
  	tpm_buf_append_u32(&buf, 0);
  	tpm_buf_append_u32(&buf, 1);

-	rc = tpm_transmit_cmd(chip, &buf, 9, 0, "get tpm pcr allocation");
+	rc = tpm_transmit_cmd(chip, &buf, 9, "get tpm pcr allocation");
  	if (rc)
  		goto out;

@@ -899,7 +893,7 @@ static int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip)
  	tpm_buf_append_u32(&buf, TPM2_CC_FIRST);
  	tpm_buf_append_u32(&buf, nr_commands);

-	rc = tpm_transmit_cmd(chip, &buf, 9 + 4 * nr_commands, 0, NULL);
+	rc = tpm_transmit_cmd(chip, &buf, 9 + 4 * nr_commands, NULL);
  	if (rc) {
  		tpm_buf_destroy(&buf);
  		goto out;
@@ -956,7 +950,7 @@ static int tpm2_startup(struct tpm_chip *chip)
  		return rc;

  	tpm_buf_append_u16(&buf, TPM2_SU_CLEAR);
-	rc = tpm_transmit_cmd(chip, &buf, 0, 0, "attempting to start the TPM");
+	rc = tpm_transmit_cmd(chip, &buf, 0, "attempting to start the TPM");
  	tpm_buf_destroy(&buf);

  	return rc;
diff --git a/drivers/char/tpm/tpm2-space.c b/drivers/char/tpm/tpm2-space.c
index d913715d30aa..dac218f33645 100644
--- a/drivers/char/tpm/tpm2-space.c
+++ b/drivers/char/tpm/tpm2-space.c
@@ -38,7 +38,7 @@ static void tpm2_flush_sessions(struct tpm_chip *chip, struct tpm_space *space)

  	for (i = 0; i < ARRAY_SIZE(space->session_tbl); i++) {
  		if (space->session_tbl[i])
-			tpm2_flush_context_cmd(chip, space->session_tbl[i], 0);
+			tpm2_flush_context(chip, space->session_tbl[i]);
  	}
  }

@@ -60,9 +60,9 @@ int tpm2_init_space(struct tpm_space *space)
  void tpm2_del_space(struct tpm_chip *chip, struct tpm_space *space)
  {
  	mutex_lock(&chip->tpm_mutex);
-	if (!tpm_chip_start(chip, 0)) {
+	if (!tpm_chip_start(chip)) {
  		tpm2_flush_sessions(chip, space);
-		tpm_chip_stop(chip, 0);
+		tpm_chip_stop(chip);
  	}
  	mutex_unlock(&chip->tpm_mutex);
  	kfree(space->context_buf);
@@ -85,7 +85,7 @@ static int tpm2_load_context(struct tpm_chip *chip, u8 *buf,
  	body_size = sizeof(*ctx) + be16_to_cpu(ctx->blob_size);
  	tpm_buf_append(&tbuf, &buf[*offset], body_size);

-	rc = tpm_transmit_cmd(chip, &tbuf, 4, 0, NULL);
+	rc = tpm_transmit_cmd(chip, &tbuf, 4, NULL);
  	if (rc < 0) {
  		dev_warn(&chip->dev, "%s: failed with a system error %d\n",
  			 __func__, rc);
@@ -133,7 +133,7 @@ static int tpm2_save_context(struct tpm_chip *chip, u32 handle, u8 *buf,

  	tpm_buf_append_u32(&tbuf, handle);

-	rc = tpm_transmit_cmd(chip, &tbuf, 0, 0, NULL);
+	rc = tpm_transmit_cmd(chip, &tbuf, 0, NULL);
  	if (rc < 0) {
  		dev_warn(&chip->dev, "%s: failed with a system error %d\n",
  			 __func__, rc);
@@ -169,7 +169,7 @@ void tpm2_flush_space(struct tpm_chip *chip)

  	for (i = 0; i < ARRAY_SIZE(space->context_tbl); i++)
  		if (space->context_tbl[i] && ~space->context_tbl[i])
-			tpm2_flush_context_cmd(chip, space->context_tbl[i], 0);
+			tpm2_flush_context(chip, space->context_tbl[i]);

  	tpm2_flush_sessions(chip, space);
  }
@@ -418,7 +418,7 @@ static int tpm2_map_response_header(struct tpm_chip *chip, u32 cc, u8 *rsp,

  	return 0;
  out_no_slots:
-	tpm2_flush_context_cmd(chip, phandle, 0);
+	tpm2_flush_context(chip, phandle);
  	dev_warn(&chip->dev, "%s: out of slots for 0x%08X\n", __func__,
  		 phandle);
  	return -ENOMEM;
@@ -505,7 +505,7 @@ static int tpm2_save_space(struct tpm_chip *chip)
  		} else if (rc)
  			return rc;

-		tpm2_flush_context_cmd(chip, space->context_tbl[i], 0);
+		tpm2_flush_context(chip, space->context_tbl[i]);
  		space->context_tbl[i] = ~0;
  	}

diff --git a/drivers/char/tpm/tpm_vtpm_proxy.c b/drivers/char/tpm/tpm_vtpm_proxy.c
index a4bb60e163cc..26a2be555288 100644
--- a/drivers/char/tpm/tpm_vtpm_proxy.c
+++ b/drivers/char/tpm/tpm_vtpm_proxy.c
@@ -417,7 +417,7 @@ static int vtpm_proxy_request_locality(struct tpm_chip *chip, int locality)

  	proxy_dev->state |= STATE_DRIVER_COMMAND;

-	rc = tpm_transmit_cmd(chip, &buf, 0, 0, "attempting to set locality");
+	rc = tpm_transmit_cmd(chip, &buf, 0, "attempting to set locality");

  	proxy_dev->state &= ~STATE_DRIVER_COMMAND;





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