linux-kernel - Re: [PATCH v4 16/20] crypto: qce: core: Make clocks optional

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Date:   Wed, 13 Oct 2021 22:23:26 +0300
From:   Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-crypto@...r.kernel.org
Cc:     bhupesh.linux@...il.com, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, robh+dt@...nel.org, agross@...nel.org,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        Thara Gopinath <thara.gopinath@...aro.org>
Subject: Re: [PATCH v4 16/20] crypto: qce: core: Make clocks optional

Hi Bhupesh,

On 10/13/21 1:55 PM, Bhupesh Sharma wrote:
> From: Thara Gopinath <thara.gopinath@...aro.org>
> 
> On certain Snapdragon processors, the crypto engine clocks are enabled by
> default by security firmware and the driver need not/ should not handle the
> clocks. Make acquiring of all the clocks optional in crypto enginer driver

typo, s/enginer/engine/

> so that the driver intializes properly even if no clocks are specified in

typo, s/intializes/initializes/

> the dt.
> 
> Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
> ---
>   drivers/crypto/qce/core.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/crypto/qce/core.c b/drivers/crypto/qce/core.c
> index 2ab0b97d718c..576c416461f9 100644
> --- a/drivers/crypto/qce/core.c
> +++ b/drivers/crypto/qce/core.c
> @@ -213,19 +213,19 @@ static int qce_crypto_probe(struct platform_device *pdev)
>   	if (IS_ERR(qce->mem_path))
>   		return PTR_ERR(qce->mem_path);
>   
> -	qce->core = devm_clk_get(qce->dev, "core");
> +	qce->core = devm_clk_get_optional(qce->dev, "core");
>   	if (IS_ERR(qce->core)) {
>   		ret = PTR_ERR(qce->core);
>   		goto err_mem_path_put;
>   	}
>   
> -	qce->iface = devm_clk_get(qce->dev, "iface");
> +	qce->iface = devm_clk_get_optional(qce->dev, "iface");
>   	if (IS_ERR(qce->iface)) {
>   		ret = PTR_ERR(qce->iface);
>   		goto err_mem_path_put;
>   	}
>   
> -	qce->bus = devm_clk_get(qce->dev, "bus");
> +	qce->bus = devm_clk_get_optional(qce->dev, "bus");
>   	if (IS_ERR(qce->bus)) {
>   		ret = PTR_ERR(qce->bus);
>   		goto err_mem_path_put;
> 

--
Best wishes,
Vladimir