linux-kernel - Re: [PATCH] memory: mtk-smi: Handle return value of clk_prepare

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Date:   Tue, 8 Aug 2017 16:35:19 +0800
From:   Honghui Zhang <honghui.zhang@...iatek.com>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
CC:     <matthias.bgg@...il.com>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] memory: mtk-smi: Handle return value of
 clk_prepare_enable

On Tue, 2017-08-08 at 11:06 +0530, Arvind Yadav wrote:
> clk_prepare_enable() can fail here and we must check its return value.
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
> ---

Hi, Arvind,
please rebase this to my latest patchset[1], it's been applied by Joerg.
And please send this one to Joerg and iommu mail list.

otherwise:
Acked-by: Honghui Zhang <honghui.zhang@...iatek.com>

[1]https://lkml.org/lkml/2017/8/3/968

Thanks.
>  drivers/memory/mtk-smi.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
> index 4afbc41..edf36f0 100644
> --- a/drivers/memory/mtk-smi.c
> +++ b/drivers/memory/mtk-smi.c
> @@ -321,6 +321,7 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
>  	struct resource *res;
>  	const struct of_device_id *of_id;
>  	enum mtk_smi_gen smi_gen;
> +	int ret;
>  
>  	if (!dev->pm_domain)
>  		return -EPROBE_DEFER;
> @@ -359,7 +360,9 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
>  		if (IS_ERR(common->clk_async))
>  			return PTR_ERR(common->clk_async);
>  
> -		clk_prepare_enable(common->clk_async);
> +		ret = clk_prepare_enable(common->clk_async);
> +		if (ret)
> +			return ret;
>  	}
>  	pm_runtime_enable(dev);
>  	platform_set_drvdata(pdev, common);