linux-kernel - Re: [PATCH v2 16/17] tpm/tpm_ftpm_tee: Make use of tee specific driver registration

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Message-ID: <aUCQNO1ovSifxO9F@kernel.org>
Date: Tue, 16 Dec 2025 00:48:20 +0200
From: Jarkko Sakkinen <jarkko@...nel.org>
To: Uwe Kleine-König <u.kleine-koenig@...libre.com>
Cc: Jens Wiklander <jens.wiklander@...aro.org>,
	Peter Huewe <peterhuewe@....de>, Jason Gunthorpe <jgg@...pe.ca>,
	Sumit Garg <sumit.garg@...nel.org>, linux-integrity@...r.kernel.org,
	op-tee@...ts.trustedfirmware.org, linux-kernel@...r.kernel.org,
	Sumit Garg <sumit.garg@....qualcomm.com>
Subject: Re: [PATCH v2 16/17] tpm/tpm_ftpm_tee: Make use of tee specific
 driver registration

On Mon, Dec 15, 2025 at 03:16:46PM +0100, Uwe Kleine-König wrote:
> tee_client_driver_register() is typed more strongly and cares about
> assigning the driver's bus. Similar for tee_client_driver_unregister().
> 
> Make use of these functions.
> 
> Reviewed-by: Sumit Garg <sumit.garg@....qualcomm.com>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...libre.com>
> ---
>  drivers/char/tpm/tpm_ftpm_tee.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/char/tpm/tpm_ftpm_tee.c b/drivers/char/tpm/tpm_ftpm_tee.c
> index 4e63c30aeaf1..e5fbc70b0eca 100644
> --- a/drivers/char/tpm/tpm_ftpm_tee.c
> +++ b/drivers/char/tpm/tpm_ftpm_tee.c
> @@ -338,7 +338,6 @@ static struct tee_client_driver ftpm_tee_driver = {
>  	.id_table	= optee_ftpm_id_table,
>  	.driver		= {
>  		.name		= "optee-ftpm",
> -		.bus		= &tee_bus_type,
>  		.probe		= ftpm_tee_probe,
>  		.remove		= ftpm_tee_remove,
>  	},
> @@ -352,7 +351,7 @@ static int __init ftpm_mod_init(void)
>  	if (rc)
>  		return rc;
>  
> -	rc = driver_register(&ftpm_tee_driver.driver);
> +	rc = tee_client_driver_register(&ftpm_tee_driver);
>  	if (rc) {
>  		platform_driver_unregister(&ftpm_tee_plat_driver);
>  		return rc;
> @@ -364,7 +363,7 @@ static int __init ftpm_mod_init(void)
>  static void __exit ftpm_mod_exit(void)
>  {
>  	platform_driver_unregister(&ftpm_tee_plat_driver);
> -	driver_unregister(&ftpm_tee_driver.driver);
> +	tee_client_driver_unregister(&ftpm_tee_driver);
>  }
>  
>  module_init(ftpm_mod_init);
> -- 
> 2.47.3
> 

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

BR, Jarkko