netdev - RE: [PATCH v12 vfio 2/7] vfio/pds: Initial support for pds VFIO driver

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Date: Fri, 21 Jul 2023 08:53:23 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: Brett Creeley <brett.creeley@....com>, "kvm@...r.kernel.org"
	<kvm@...r.kernel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"alex.williamson@...hat.com" <alex.williamson@...hat.com>, "jgg@...dia.com"
	<jgg@...dia.com>, "yishaih@...dia.com" <yishaih@...dia.com>,
	"shameerali.kolothum.thodi@...wei.com" <shameerali.kolothum.thodi@...wei.com>
CC: "shannon.nelson@....com" <shannon.nelson@....com>
Subject: RE: [PATCH v12 vfio 2/7] vfio/pds: Initial support for pds VFIO
 driver

> From: Brett Creeley <brett.creeley@....com>
> Sent: Thursday, July 20, 2023 6:35 AM
> 
> +
> +static int pds_vfio_init_device(struct vfio_device *vdev)
> +{
> +	struct pds_vfio_pci_device *pds_vfio =
> +		container_of(vdev, struct pds_vfio_pci_device,
> +			     vfio_coredev.vdev);
> +	struct pci_dev *pdev = to_pci_dev(vdev->dev);
> +	int err, vf_id;
> +
> +	err = vfio_pci_core_init_dev(vdev);
> +	if (err)
> +		return err;
> +
> +	vf_id = pci_iov_vf_id(pdev);
> +	if (vf_id < 0)
> +		return vf_id;

this returns w/o reverting what vfio_pci_core_init_dev() does.

A simpler way is to move it to the start.