[PATCH v8 17/17] tpm: remove @flags from tpm_transmit()

Stefan Berger stefanb at linux.ibm.com
Fri Nov 16 17:02:47 UTC 2018


On 11/16/18 7:38 AM, Jarkko Sakkinen wrote:
> Remove @flags from tpm_transmit() API. It is no longer used for
> anything.
>
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen at linux.intel.com>
Reviewed-by: Stefan Berger <stefanb at linux.ibm.com>
> ---
>   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 837d44fa0797..afd6626f8cd2 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);
> -	rc = tpm_chip_start(chip, 0);
> +	rc = tpm_chip_start(chip);
>   	if (rc)
>   		mutex_unlock(&chip->tpm_mutex);
>   out_lock:
> @@ -176,7 +174,7 @@ 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);
> @@ -554,11 +552,11 @@ 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 21ac8da94d90..ced380b01804 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);
>   		if (ret < 0)
>   			break;
>   		rc = be32_to_cpu(header->return_code);
> @@ -201,7 +198,6 @@ 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:
> @@ -210,14 +206,13 @@ 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;
>
> @@ -366,8 +361,7 @@ 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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