Subject: Re: [PATCH v2] tpm: ibmvtpm: Call tpm2_sessions_init() to initialize session support

From: "Jarkko Sakkinen" <[email-masked]>
Date: Thu, 01 Aug 2024 00:18:11 +0300

On Mon Jul 29, 2024 at 4:29 PM EEST, Stefan Berger wrote:
> Commit d2add27cf2b8 ("tpm: Add NULL primary creation") introduced
> CONFIG_TCG_TPM2_HMAC. When this option is enabled on ppc64 then the
> following message appears in the kernel log due to a missing call to
> tpm2_sessions_init().
>
> [    2.654549] tpm tpm0: auth session is not active
>
> Add the missing call to tpm2_session_init() to the ibmvtpm driver to
> resolve this issue.
>
> Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation")
> Signed-off-by: Stefan Berger <[email-masked]>
> ---
>  drivers/char/tpm/tpm_ibmvtpm.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c
> index d3989b257f42..1e5b107d1f3b 100644
> --- a/drivers/char/tpm/tpm_ibmvtpm.c
> +++ b/drivers/char/tpm/tpm_ibmvtpm.c
> @@ -698,6 +698,10 @@ static int tpm_ibmvtpm_probe(struct vio_dev *vio_dev,
>  		rc = tpm2_get_cc_attrs_tbl(chip);
>  		if (rc)
>  			goto init_irq_cleanup;
> +
> +		rc = tpm2_sessions_init(chip);
> +		if (rc)
> +			goto init_irq_cleanup;
>  	}
>  
>  	return tpm_chip_register(chip);

Cannot get emails working with  my Linux machine given

https://bugzilla.redhat.com/show_bug.cgi?id=2302132

I'll try to sort this out first and then do a pull request.

BR, Jarkko