Re: [PATCH 1/1] soc: qcom: use devm_clk_get_enabled() in gsbi_probe()

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On Thu, Jul 20, 2023 at 10:08:34PM +0800, Yuanjun Gong wrote:
> in gsbi_probe(), the return value of function clk_prepare_enable()
> should be checked, since it may fail. using devm_clk_get_enabled()
> instead of devm_clk_get() and clk_prepare_enable() can avoid this
> problem.
> 

Nice, thank you.

> Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@xxxxxxx>
> ---
>  drivers/soc/qcom/qcom_gsbi.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/drivers/soc/qcom/qcom_gsbi.c b/drivers/soc/qcom/qcom_gsbi.c
> index f1742e5bddb9..de94a20d5814 100644
> --- a/drivers/soc/qcom/qcom_gsbi.c
> +++ b/drivers/soc/qcom/qcom_gsbi.c
> @@ -178,12 +178,10 @@ static int gsbi_probe(struct platform_device *pdev)
>  
>  	dev_info(&pdev->dev, "GSBI port protocol: %d crci: %d\n",
>  		 gsbi->mode, gsbi->crci);
> -	gsbi->hclk = devm_clk_get(&pdev->dev, "iface");
> +	gsbi->hclk = devm_clk_get_enabled(&pdev->dev, "iface");
>  	if (IS_ERR(gsbi->hclk))
>  		return PTR_ERR(gsbi->hclk);
>  
> -	clk_prepare_enable(gsbi->hclk);
> -
>  	writel_relaxed((gsbi->mode << GSBI_PROTOCOL_SHIFT) | gsbi->crci,
>  				base + GSBI_CTRL_REG);
>  
> @@ -212,8 +210,6 @@ static int gsbi_probe(struct platform_device *pdev)
>  	platform_set_drvdata(pdev, gsbi);
>  
>  	ret = of_platform_populate(node, NULL, NULL, &pdev->dev);

This can be further cleaned up by return of_platform_populate()
directly, and removing the ret variable. Can you please do that as well?

Thanks,
Bjorn

> -	if (ret)
> -		clk_disable_unprepare(gsbi->hclk);
>  	return ret;
>  }
>  
> -- 
> 2.17.1
> 



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