linux-kernel - Re: [PATCH -next] iommu: msm_iommu: Delete useless kfree code

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Date:   Mon, 14 Dec 2020 10:21:44 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Zheng Yongjun <zhengyongjun3@...wei.com>
Cc:     agross@...nel.org, joro@...tes.org, will@...nel.org,
        linux-arm-msm@...r.kernel.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] iommu: msm_iommu: Delete useless kfree code

On Mon 14 Dec 07:47 CST 2020, Zheng Yongjun wrote:

> The parameter of kfree function is NULL, so kfree code is useless, delete it.
> 
> Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Regards,
Bjorn

> ---
>  drivers/iommu/msm_iommu.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c
> index 3615cd6241c4..1286674a1322 100644
> --- a/drivers/iommu/msm_iommu.c
> +++ b/drivers/iommu/msm_iommu.c
> @@ -319,7 +319,7 @@ static struct iommu_domain *msm_iommu_domain_alloc(unsigned type)
>  
>  	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
>  	if (!priv)
> -		goto fail_nomem;
> +		return NULL;
>  
>  	INIT_LIST_HEAD(&priv->list_attached);
>  
> @@ -328,10 +328,6 @@ static struct iommu_domain *msm_iommu_domain_alloc(unsigned type)
>  	priv->domain.geometry.force_aperture = true;
>  
>  	return &priv->domain;
> -
> -fail_nomem:
> -	kfree(priv);
> -	return NULL;
>  }
>  
>  static void msm_iommu_domain_free(struct iommu_domain *domain)
> -- 
> 2.22.0
>