linux-kernel - RE: [PATCH v5 07/14] iommufd/viommu: Add iommufd_viommu_get_vdev

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Message-ID: <BN9PR11MB5276544E0043A69C66F354488C1C2@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Fri, 10 Jan 2025 07:07:36 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: Nicolin Chen <nicolinc@...dia.com>, "jgg@...dia.com" <jgg@...dia.com>,
	"corbet@....net" <corbet@....net>, "will@...nel.org" <will@...nel.org>
CC: "joro@...tes.org" <joro@...tes.org>, "suravee.suthikulpanit@....com"
	<suravee.suthikulpanit@....com>, "robin.murphy@....com"
	<robin.murphy@....com>, "dwmw2@...radead.org" <dwmw2@...radead.org>,
	"baolu.lu@...ux.intel.com" <baolu.lu@...ux.intel.com>, "shuah@...nel.org"
	<shuah@...nel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "iommu@...ts.linux.dev"
	<iommu@...ts.linux.dev>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-kselftest@...r.kernel.org"
	<linux-kselftest@...r.kernel.org>, "linux-doc@...r.kernel.org"
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	<shameerali.kolothum.thodi@...wei.com>, "smostafa@...gle.com"
	<smostafa@...gle.com>, "ddutile@...hat.com" <ddutile@...hat.com>, "Liu, Yi L"
	<yi.l.liu@...el.com>, "patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: RE: [PATCH v5 07/14] iommufd/viommu: Add iommufd_viommu_get_vdev_id
 helper

> From: Nicolin Chen <nicolinc@...dia.com>
> Sent: Wednesday, January 8, 2025 1:10 AM
> +
> +	xa_lock(&viommu->vdevs);
> +	xa_for_each(&viommu->vdevs, index, vdev) {
> +		if (vdev && vdev->dev == dev) {
> +			vdev_id = (unsigned long)vdev->id;
> +			break;
> +		}
> +	}

Nit. No need to check vdev pointer as commented in last review.

Reviewed-by: Kevin Tian <kevin.tian@...el.com>