linux-kernel - Re: [PATCH v1 01/17] tee: Add some helpers to reduce boilerplate for tee client drivers

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Message-ID: <aT-zOu7dUtIPAjbJ@sumit-X1>
Date: Mon, 15 Dec 2025 16:05:30 +0900
From: Sumit Garg <sumit.garg@...nel.org>
To: Uwe Kleine-König <u.kleine-koenig@...libre.com>
Cc: Jens Wiklander <jens.wiklander@...aro.org>,
	op-tee@...ts.trustedfirmware.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 01/17] tee: Add some helpers to reduce boilerplate for
 tee client drivers

On Thu, Dec 11, 2025 at 06:14:55PM +0100, Uwe Kleine-König wrote:
> Similar to platform drivers (and others) create dedicated register and
> unregister functions and a macro to simplify modules that only need to
> handle driver registration in their init and exit handlers.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...libre.com>
> ---
>  drivers/tee/tee_core.c  | 16 ++++++++++++++++
>  include/linux/tee_drv.h |  9 +++++++++
>  2 files changed, 25 insertions(+)

Reviewed-by: Sumit Garg <sumit.garg@....qualcomm.com>

-Sumit

> 
> diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c
> index d65d47cc154e..51379f7fc5d5 100644
> --- a/drivers/tee/tee_core.c
> +++ b/drivers/tee/tee_core.c
> @@ -1405,6 +1405,22 @@ const struct bus_type tee_bus_type = {
>  };
>  EXPORT_SYMBOL_GPL(tee_bus_type);
>  
> +int __tee_client_driver_register(struct tee_client_driver *tee_driver,
> +				 struct module *owner)
> +{
> +	tee_driver->driver.owner = owner;
> +	tee_driver->driver.bus = &tee_bus_type;
> +
> +	return driver_register(&tee_driver->driver);
> +}
> +EXPORT_SYMBOL_GPL(__tee_client_driver_register);
> +
> +void tee_client_driver_unregister(struct tee_client_driver *tee_driver)
> +{
> +	driver_unregister(&tee_driver->driver);
> +}
> +EXPORT_SYMBOL_GPL(tee_client_driver_unregister);
> +
>  static int __init tee_init(void)
>  {
>  	int rc;
> diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
> index 88a6f9697c89..850c03b2cdea 100644
> --- a/include/linux/tee_drv.h
> +++ b/include/linux/tee_drv.h
> @@ -322,4 +322,13 @@ struct tee_client_driver {
>  #define to_tee_client_driver(d) \
>  		container_of_const(d, struct tee_client_driver, driver)
>  
> +#define tee_client_driver_register(drv) \
> +        __tee_client_driver_register(drv, THIS_MODULE)
> +int __tee_client_driver_register(struct tee_client_driver *, struct module *);
> +void tee_client_driver_unregister(struct tee_client_driver *);
> +
> +#define module_tee_client_driver(__tee_client_driver) \
> +	module_driver(__tee_client_driver, tee_client_driver_register, \
> +		      tee_client_driver_unregister)
> +
>  #endif /*__TEE_DRV_H*/
> -- 
> 2.47.3
>