Re: [PATCH] hwrng: optee -: Use device-managed registration API

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On Wed, 3 Feb 2021 at 14:55, Tian Tao <tiantao6@xxxxxxxxxxxxx> wrote:
>
> Use devm_hwrng_register to get rid of manual unregistration.
>
> Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
> ---
>  drivers/char/hw_random/optee-rng.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>

Fix up subject line as s/hwrng: optee -:/hwrng: optee:/

With that fixed you can add:

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

-Sumit

> diff --git a/drivers/char/hw_random/optee-rng.c b/drivers/char/hw_random/optee-rng.c
> index a99d829..135a825 100644
> --- a/drivers/char/hw_random/optee-rng.c
> +++ b/drivers/char/hw_random/optee-rng.c
> @@ -243,7 +243,7 @@ static int optee_rng_probe(struct device *dev)
>         if (err)
>                 goto out_sess;
>
> -       err = hwrng_register(&pvt_data.optee_rng);
> +       err = devm_hwrng_register(dev, &pvt_data.optee_rng);
>         if (err) {
>                 dev_err(dev, "hwrng registration failed (%d)\n", err);
>                 goto out_sess;
> @@ -263,7 +263,6 @@ static int optee_rng_probe(struct device *dev)
>
>  static int optee_rng_remove(struct device *dev)
>  {
> -       hwrng_unregister(&pvt_data.optee_rng);
>         tee_client_close_session(pvt_data.ctx, pvt_data.session_id);
>         tee_client_close_context(pvt_data.ctx);
>
> --
> 2.7.4
>



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