Re: [PATCH v2] tpm: tpm_ibm_vtpm: Fix unallocated banks

[Jarkko Sakkinen]

On Sat, 2019-07-06 at 20:18 -0400, Nayna Jain wrote:
> +/*
> + * tpm_get_pcr_allocation() - initialize the chip allocated banks for PCRs
> + * @chip: TPM chip to use.
> + */
> +static int tpm_get_pcr_allocation(struct tpm_chip *chip)
> +{
> +	int rc;
> +
> +	if (chip->flags & TPM_CHIP_FLAG_TPM2)
> +		rc = tpm2_get_pcr_allocation(chip);
> +	else
> +		rc = tpm1_get_pcr_allocation(chip);
> +
> +	return rc;
> +}

It is just a trivial static function, which means that kdoc comment is
not required and neither it is useful. Please remove that. I would
rewrite the function like:

static int tpm_get_pcr_allocation(struct tpm_chip *chip)
{
	int rc;

	rc = (chip->flags & TPM_CHIP_FLAG_TPM2) ?
     	     tpm2_get_pcr_allocation(chip) :
     	     tpm1_get_pcr_allocation(chip);

	return rc > 0 ? -ENODEV : rc;
}

This addresses the issue that Stefan also pointed out. You have to
deal with the TPM error codes.

/Jarkko