From mboxrd@z Thu Jan  1 00:00:00 1970
From: honghui.zhang@mediatek.com (Honghui Zhang)
Date: Tue, 8 Aug 2017 16:35:19 +0800
Subject: [PATCH] memory: mtk-smi: Handle return value of clk_prepare_enable
In-Reply-To: <2c1de1862ce9fdefe7653706915c146038b12c4c.1502167256.git.arvind.yadav.cs@gmail.com>
References: <472bce58da459a7c64d0ad1cd39b74fa0fcf77f1.1502167256.git.arvind.yadav.cs@gmail.com>
 <2c1de1862ce9fdefe7653706915c146038b12c4c.1502167256.git.arvind.yadav.cs@gmail.com>
Message-ID: <1502181319.24341.38.camel@mtksdaap41>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

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@gmail.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@mediatek.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);