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vfio: Remove device_data from the vfio bus driver API

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There are no longer any users, so it can go away. Everything is using
container_of now.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Message-Id: <14-v3-225de1400dfc+4e074-vfio1_jgg@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Jason Gunthorpe 2021-03-30 09:53:08 -06:00 committed by Alex Williamson
parent 07d47b4222
commit 1e04ec1420
7 changed files with 9 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Documentation/driver-api/vfio.rst
View File

@ -254,8 +254,7 @@ vfio_unregister_group_dev() respectively::
void vfio_init_group_dev(struct vfio_device *device,
struct device *dev,
const struct vfio_device_ops *ops,
void *device_data);
const struct vfio_device_ops *ops);
int vfio_register_group_dev(struct vfio_device *device);
void vfio_unregister_group_dev(struct vfio_device *device);

5
drivers/vfio/fsl-mc/vfio_fsl_mc.c
View File

@ -75,7 +75,8 @@ static int vfio_fsl_mc_reflck_attach(struct vfio_fsl_mc_device *vdev)
goto unlock;
}
cont_vdev = vfio_device_data(device);
cont_vdev =
container_of(device, struct vfio_fsl_mc_device, vdev);
if (!cont_vdev || !cont_vdev->reflck) {
vfio_device_put(device);
ret = -ENODEV;
@ -630,7 +631,7 @@ static int vfio_fsl_mc_probe(struct fsl_mc_device *mc_dev)
goto out_group_put;
}
vfio_init_group_dev(&vdev->vdev, dev, &vfio_fsl_mc_ops, vdev);
vfio_init_group_dev(&vdev->vdev, dev, &vfio_fsl_mc_ops);
vdev->mc_dev = mc_dev;
mutex_init(&vdev->igate);

2
drivers/vfio/mdev/vfio_mdev.c
View File

@ -134,7 +134,7 @@ static int vfio_mdev_probe(struct device *dev)
if (!vdev)
return -ENOMEM;
vfio_init_group_dev(vdev, &mdev->dev, &vfio_mdev_dev_ops, mdev);
vfio_init_group_dev(vdev, &mdev->dev, &vfio_mdev_dev_ops);
ret = vfio_register_group_dev(vdev);
if (ret) {
kfree(vdev);

2
drivers/vfio/pci/vfio_pci.c
View File

@ -2022,7 +2022,7 @@ static int vfio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto out_group_put;
}
vfio_init_group_dev(&vdev->vdev, &pdev->dev, &vfio_pci_ops, vdev);
vfio_init_group_dev(&vdev->vdev, &pdev->dev, &vfio_pci_ops);
vdev->pdev = pdev;
vdev->irq_type = VFIO_PCI_NUM_IRQS;
mutex_init(&vdev->igate);

2
drivers/vfio/platform/vfio_platform_common.c
View File

@ -666,7 +666,7 @@ int vfio_platform_probe_common(struct vfio_platform_device *vdev,
struct iommu_group *group;
int ret;
vfio_init_group_dev(&vdev->vdev, dev, &vfio_platform_ops, vdev);
vfio_init_group_dev(&vdev->vdev, dev, &vfio_platform_ops);
ret = vfio_platform_acpi_probe(vdev, dev);
if (ret)

12
drivers/vfio/vfio.c
View File

@ -741,12 +741,11 @@ static int vfio_iommu_group_notifier(struct notifier_block *nb,
* VFIO driver API
*/
void vfio_init_group_dev(struct vfio_device *device, struct device *dev,
const struct vfio_device_ops *ops, void *device_data)
const struct vfio_device_ops *ops)
{
init_completion(&device->comp);
device->dev = dev;
device->ops = ops;
device->device_data = device_data;
}
EXPORT_SYMBOL_GPL(vfio_init_group_dev);
@ -851,15 +850,6 @@ static struct vfio_device *vfio_device_get_from_name(struct vfio_group *group,
return device;
}
/*
* Caller must hold a reference to the vfio_device
*/
void *vfio_device_data(struct vfio_device *device)
{
return device->device_data;
}
EXPORT_SYMBOL_GPL(vfio_device_data);
/*
* Decrement the device reference count and wait for the device to be
* removed. Open file descriptors for the device... */

4
include/linux/vfio.h
View File

@ -24,7 +24,6 @@ struct vfio_device {
refcount_t refcount;
struct completion comp;
struct list_head group_next;
void *device_data;
};
/**
@ -61,12 +60,11 @@ extern struct iommu_group *vfio_iommu_group_get(struct device *dev);
extern void vfio_iommu_group_put(struct iommu_group *group, struct device *dev);
void vfio_init_group_dev(struct vfio_device *device, struct device *dev,
const struct vfio_device_ops *ops, void *device_data);
const struct vfio_device_ops *ops);
int vfio_register_group_dev(struct vfio_device *device);
void vfio_unregister_group_dev(struct vfio_device *device);
extern struct vfio_device *vfio_device_get_from_dev(struct device *dev);
extern void vfio_device_put(struct vfio_device *device);
extern void *vfio_device_data(struct vfio_device *device);
/* events for the backend driver notify callback */
enum vfio_iommu_notify_type {