linux-kernel - RE: [PATCH 5/9] iommu: Make fault

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Date:   Tue, 11 Jul 2023 06:14:42 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        "Will Deacon" <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        "Jason Gunthorpe" <jgg@...pe.ca>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Nicolin Chen <nicolinc@...dia.com>
CC:     "Liu, Yi L" <yi.l.liu@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 5/9] iommu: Make fault_param generic

> From: Lu Baolu <baolu.lu@...ux.intel.com>
> Sent: Tuesday, July 11, 2023 9:07 AM
> 
> @@ -299,7 +299,15 @@ static int dev_iommu_get(struct device *dev)
>  		return -ENOMEM;
> 
>  	mutex_init(&param->lock);
> +	param->fault_param = kzalloc(sizeof(*param->fault_param),
> GFP_KERNEL);
> +	if (!param->fault_param) {
> +		kfree(param);
> +		return -ENOMEM;
> +	}
> +	mutex_init(&param->fault_param->lock);
> +	INIT_LIST_HEAD(&param->fault_param->faults);
>  	dev->iommu = param;
> +
>  	return 0;
>  }

Upon above changes is it slightly cleaner to call it dev_iommu_init()
to better pair with dev_iommu_free()?