Re: [PATCH 3/4 v2] move tpm auto startup functions

[Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>]

On Mon, Jun 20, 2016 at 01:07:08PM +0300, andrew zamansky wrote:
> move tpm auto startup functions to tpm-chip.c as static functions

Is there any particular reason why they aren't declared static in the first
place?

/Jarkko

> 
> Signed-off-by: Andrew Azmansky <andrew.zamansky-KrzQf0k3Iz9BDgjK7y7TUQ@public.gmane.org>
> ---
>  drivers/char/tpm/tpm-chip.c      | 68 ++++++++++++++++++++++++++++++++++++++++
>  drivers/char/tpm/tpm-interface.c | 25 ---------------
>  drivers/char/tpm/tpm.h           |  4 ---
>  drivers/char/tpm/tpm2-cmd.c      | 38 ----------------------
>  4 files changed, 68 insertions(+), 67 deletions(-)
> 
> diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
> index 9a36ced..3ad4e7f 100644
> --- a/drivers/char/tpm/tpm-chip.c
> +++ b/drivers/char/tpm/tpm-chip.c
> @@ -208,6 +208,74 @@ static void tpm1_chip_unregister(struct tpm_chip *chip)
>  	tpm_sysfs_del_device(chip);
>  }
>  
> +/**
> + * tpm1_auto_startup - Perform the standard automatic TPM initialization
> + *                     sequence
> + * @chip: TPM chip to use
> + *
> + * Returns 0 on success, < 0 in case of fatal error.
> + */
> +static int tpm1_auto_startup(struct tpm_chip *chip)
> +{
> +	int rc;
> +
> +	rc = tpm_get_timeouts(chip);
> +	if (rc)
> +		goto out;
> +	rc = tpm_do_selftest(chip);
> +	if (rc) {
> +		dev_err(&chip->dev, "TPM self test failed\n");
> +		goto out;
> +	}
> +
> +	return rc;
> +out:
> +	if (rc > 0)
> +		rc = -ENODEV;
> +	return rc;
> +}
> +
> +
> +/**
> + * tpm2_auto_startup - Perform the standard automatic TPM initialization
> + *                     sequence
> + * @chip: TPM chip to use
> + *
> + * Returns 0 on success, < 0 in case of fatal error.
> + */
> +static int tpm2_auto_startup(struct tpm_chip *chip)
> +{
> +	int rc;
> +
> +	rc = tpm_get_timeouts(chip);
> +	if (rc)
> +		goto out;
> +
> +	rc = tpm2_do_selftest(chip);
> +	if (rc != TPM2_RC_INITIALIZE) {
> +		dev_err(&chip->dev, "TPM self test failed\n");
> +		goto out;
> +	}
> +
> +	if (rc == TPM2_RC_INITIALIZE) {
> +		rc = tpm2_startup(chip, TPM2_SU_CLEAR);
> +		if (rc)
> +			goto out;
> +
> +		rc = tpm2_do_selftest(chip);
> +		if (rc) {
> +			dev_err(&chip->dev, "TPM self test failed\n");
> +			goto out;
> +		}
> +	}
> +
> +	return rc;
> +out:
> +	if (rc > 0)
> +		rc = -ENODEV;
> +	return rc;
> +}
> +
>  /*
>   * tpm_chip_register() - create a character device for the TPM chip
>   * @chip: TPM chip to use.
> diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
> index 4e6798a..a716d59 100644
> --- a/drivers/char/tpm/tpm-interface.c
> +++ b/drivers/char/tpm/tpm-interface.c
> @@ -842,32 +842,7 @@ int tpm_do_selftest(struct tpm_chip *chip)
>  }
>  EXPORT_SYMBOL_GPL(tpm_do_selftest);
>  
> -/**
> - * tpm1_auto_startup - Perform the standard automatic TPM initialization
> - *                     sequence
> - * @chip: TPM chip to use
> - *
> - * Returns 0 on success, < 0 in case of fatal error.
> - */
> -int tpm1_auto_startup(struct tpm_chip *chip)
> -{
> -	int rc;
> -
> -	rc = tpm_get_timeouts(chip);
> -	if (rc)
> -		goto out;
> -	rc = tpm_do_selftest(chip);
> -	if (rc) {
> -		dev_err(&chip->dev, "TPM self test failed\n");
> -		goto out;
> -	}
>  
> -	return rc;
> -out:
> -	if (rc > 0)
> -		rc = -ENODEV;
> -	return rc;
> -}
>  
>  int tpm_send(u32 chip_num, void *cmd, size_t buflen)
>  {
> diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
> index a99105f..affe506 100644
> --- a/drivers/char/tpm/tpm.h
> +++ b/drivers/char/tpm/tpm.h
> @@ -501,7 +501,6 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd, int len,
>  			 const char *desc);
>  extern int tpm_get_timeouts(struct tpm_chip *);
>  extern void tpm_gen_interrupt(struct tpm_chip *);
> -int tpm1_auto_startup(struct tpm_chip *chip);
>  extern int tpm_do_selftest(struct tpm_chip *);
>  extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);
>  extern int tpm_pm_suspend(struct device *);
> @@ -537,10 +536,7 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
>  int tpm2_unseal_trusted(struct tpm_chip *chip,
>  			struct trusted_key_payload *payload,
>  			struct trusted_key_options *options);
> -ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
> -			u32 *value, const char *desc);
>  
> -int tpm2_auto_startup(struct tpm_chip *chip);
>  extern int tpm2_startup(struct tpm_chip *chip, u16 startup_type);
>  extern void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
>  extern unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *, u32);
> diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
> index 984190e..8221d05 100644
> --- a/drivers/char/tpm/tpm2-cmd.c
> +++ b/drivers/char/tpm/tpm2-cmd.c
> @@ -944,42 +944,4 @@ int tpm2_probe(struct tpm_chip *chip)
>  }
>  EXPORT_SYMBOL_GPL(tpm2_probe);
>  
> -/**
> - * tpm2_auto_startup - Perform the standard automatic TPM initialization
> - *                     sequence
> - * @chip: TPM chip to use
> - *
> - * Returns 0 on success, < 0 in case of fatal error.
> - */
> -int tpm2_auto_startup(struct tpm_chip *chip)
> -{
> -	int rc;
>  
> -	rc = tpm_get_timeouts(chip);
> -	if (rc)
> -		goto out;
> -
> -	rc = tpm2_do_selftest(chip);
> -	if (rc != TPM2_RC_INITIALIZE) {
> -		dev_err(&chip->dev, "TPM self test failed\n");
> -		goto out;
> -	}
> -
> -	if (rc == TPM2_RC_INITIALIZE) {
> -		rc = tpm2_startup(chip, TPM2_SU_CLEAR);
> -		if (rc)
> -			goto out;
> -
> -		rc = tpm2_do_selftest(chip);
> -		if (rc) {
> -			dev_err(&chip->dev, "TPM self test failed\n");
> -			goto out;
> -		}
> -	}
> -
> -	return rc;
> -out:
> -	if (rc > 0)
> -		rc = -ENODEV;
> -	return rc;
> -}
> -- 
> 1.9.1
> 

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