linux-kernel - Re: [PATCH v5 2/2] tpm_crb_ffa: use dev

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Message-ID: <aBJHESVFL6K0pgmd@kernel.org>
Date: Wed, 30 Apr 2025 18:51:45 +0300
From: Jarkko Sakkinen <jarkko@...nel.org>
To: Yeoreum Yun <yeoreum.yun@....com>
Cc: peterhuewe@....de, jgg@...pe.ca, sudeep.holla@....com,
	stuart.yoder@....com, sgarzare@...hat.com,
	linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/2] tpm_crb_ffa: use dev_xx() macro to print log

On Tue, Apr 15, 2025 at 07:50:13PM +0100, Yeoreum Yun wrote:
> Instead of pr_xxx() macro, use dev_xxx() to print log.
> This patch changes some error log level to warn log level when
> the tpm_crb_ffa secure partition doesn't support properly but
> system can run without it.
> (i.e) unsupport of direct message ABI or unsupported ABI version
> 
> Signed-off-by: Yeoreum Yun <yeoreum.yun@....com>
> ---
>  drivers/char/tpm/tpm_crb_ffa.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/char/tpm/tpm_crb_ffa.c b/drivers/char/tpm/tpm_crb_ffa.c
> index fed775cf53ab..66b38b2cbdd5 100644
> --- a/drivers/char/tpm/tpm_crb_ffa.c
> +++ b/drivers/char/tpm/tpm_crb_ffa.c
> @@ -303,7 +303,7 @@ static int tpm_crb_ffa_probe(struct ffa_device *ffa_dev)
>  
>  	if (!ffa_partition_supports_direct_recv(ffa_dev) &&
>  	    !ffa_partition_supports_direct_req2_recv(ffa_dev)) {
> -		pr_err("TPM partition doesn't support direct message receive.\n");
> +		dev_warn(&ffa_dev->dev, "partition doesn't support direct message receive.\n");
>  		return -EINVAL;
>  	}
>  
> @@ -324,17 +324,17 @@ static int tpm_crb_ffa_probe(struct ffa_device *ffa_dev)
>  	rc = tpm_crb_ffa_get_interface_version(&tpm_crb_ffa->major_version,
>  					       &tpm_crb_ffa->minor_version);
>  	if (rc) {
> -		pr_err("failed to get crb interface version. rc:%d", rc);
> +		dev_err(&ffa_dev->dev, "failed to get crb interface version. rc:%d\n", rc);
>  		goto out;
>  	}
>  
> -	pr_info("ABI version %u.%u", tpm_crb_ffa->major_version,
> +	dev_info(&ffa_dev->dev, "ABI version %u.%u\n", tpm_crb_ffa->major_version,
>  		tpm_crb_ffa->minor_version);
>  
>  	if (tpm_crb_ffa->major_version != CRB_FFA_VERSION_MAJOR ||
>  	    (tpm_crb_ffa->minor_version > 0 &&
>  	    tpm_crb_ffa->minor_version < CRB_FFA_VERSION_MINOR)) {
> -		pr_err("Incompatible ABI version");
> +		dev_warn(&ffa_dev->dev, "Incompatible ABI version\n");
>  		goto out;
>  	}
>  
> -- 
> LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}
> 
> 

Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>

BR, Jarkko