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Re: [PATCH v1] PM / devfreq: exynos-nocp : Handle return value of clk_prepare_enable

From Chanwoo Choi <cw00.choi@samsung.com>
Newsgroups linux.kernel
Subject Re: [PATCH v1] PM / devfreq: exynos-nocp : Handle return value of clk_prepare_enable
Date 2017-05-23 11:50 +0200
Message-ID <tKeBY-1li-13@gated-at.bofh.it> (permalink)
References <tKeBY-1li-15@gated-at.bofh.it> <tINNw-Zy-13@gated-at.bofh.it>
Organization Samsung Electronics

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Hi Arvind,

On 2017년 05월 19일 19:50, Arvind Yadav wrote:
> clk_prepare_enable() can fail here and we must check its return value.
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
> ---
>  drivers/devfreq/event/exynos-nocp.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/devfreq/event/exynos-nocp.c b/drivers/devfreq/event/exynos-nocp.c
> index 5c3e7b1..f6e7956 100644
> --- a/drivers/devfreq/event/exynos-nocp.c
> +++ b/drivers/devfreq/event/exynos-nocp.c
> @@ -267,7 +267,11 @@ static int exynos_nocp_probe(struct platform_device *pdev)
>  	}
>  	platform_set_drvdata(pdev, nocp);
>  
> -	clk_prepare_enable(nocp->clk);
> +	ret = clk_prepare_enable(nocp->clk);
> +	if (ret) {
> +		dev_err(&pdev->dev, "failed to prepare ppmu clock\n");
> +		return ret;
> +	}

I already replied from the similar patch. Thanks.

>  
>  	pr_info("exynos-nocp: new NoC Probe device registered: %s\n",
>  			dev_name(dev));
> 


-- 
Best Regards,
Chanwoo Choi
Samsung Electronics

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[PATCH v1] PM / devfreq: exynos-nocp : Handle return value of clk_prepare_enable Arvind Yadav <arvind.yadav.cs@gmail.com> - 2017-05-19 13:00 +0200
  Re: [PATCH v1] PM / devfreq: exynos-nocp : Handle return value of  clk_prepare_enable Chanwoo Choi <cw00.choi@samsung.com> - 2017-05-23 11:50 +0200
    Re: [PATCH v1] PM / devfreq: exynos-nocp : Handle return value of  clk_prepare_enable Chanwoo Choi <cw00.choi@samsung.com> - 2017-05-24 04:00 +0200

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