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vDPA/ifcvf: allocate the adapter in dev_add()

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commit 93139037b582134deb1ed894bbc4bc1d34ff35e7 upstream.

The adapter is the container of the vdpa_device,
this commits allocate the adapter in dev_add()
rather than in probe(). So that the vdpa_device()
could be re-created when the userspace creates
the vdpa device, and free-ed in dev_del()

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Cc: stable@vger.kernel.org
Message-Id: <20221125145724.1129962-11-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhu Lingshan 2022-11-25 22:57:22 +08:00 committed by Greg Kroah-Hartman
parent dd5d2d8821
commit beb15de99a
1 changed files with 13 additions and 21 deletions
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34
drivers/vdpa/ifcvf/ifcvf_main.c
View File

@ -746,12 +746,20 @@ static int ifcvf_vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
int ret;
ifcvf_mgmt_dev = container_of(mdev, struct ifcvf_vdpa_mgmt_dev, mdev);
if (!ifcvf_mgmt_dev->adapter)
return -EOPNOTSUPP;
vf = &ifcvf_mgmt_dev->vf;
pdev = vf->pdev;
adapter = vdpa_alloc_device(struct ifcvf_adapter, vdpa,
&pdev->dev, &ifc_vdpa_ops, 1, 1, NULL, false);
if (IS_ERR(adapter)) {
IFCVF_ERR(pdev, "Failed to allocate vDPA structure");
return PTR_ERR(adapter);
}
adapter = ifcvf_mgmt_dev->adapter;
vf = adapter->vf;
pdev = adapter->pdev;
ifcvf_mgmt_dev->adapter = adapter;
adapter->pdev = pdev;
adapter->vdpa.dma_dev = &pdev->dev;
adapter->vdpa.mdev = mdev;
adapter->vf = vf;
vdpa_dev = &adapter->vdpa;
if (name)
@ -769,7 +777,6 @@ static int ifcvf_vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
return 0;
}
static void ifcvf_vdpa_dev_del(struct vdpa_mgmt_dev *mdev, struct vdpa_device *dev)
{
struct ifcvf_vdpa_mgmt_dev *ifcvf_mgmt_dev;
@ -788,7 +795,6 @@ static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct ifcvf_vdpa_mgmt_dev *ifcvf_mgmt_dev;
struct device *dev = &pdev->dev;
struct ifcvf_adapter *adapter;
struct ifcvf_hw *vf;
u32 dev_type;
int ret, i;
@ -825,24 +831,10 @@ static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return -ENOMEM;
}
adapter = vdpa_alloc_device(struct ifcvf_adapter, vdpa,
dev, &ifc_vdpa_ops, 1, 1, NULL, false);
if (IS_ERR(adapter)) {
IFCVF_ERR(pdev, "Failed to allocate vDPA structure");
ret = PTR_ERR(adapter);
goto err;
}
adapter->pdev = pdev;
adapter->vdpa.dma_dev = &pdev->dev;
adapter->vdpa.mdev = &ifcvf_mgmt_dev->mdev;
ifcvf_mgmt_dev->adapter = adapter;
vf = &ifcvf_mgmt_dev->vf;
vf->dev_type = get_dev_type(pdev);
vf->base = pcim_iomap_table(pdev);
vf->pdev = pdev;
adapter->vf = vf;
ret = ifcvf_init_hw(vf, pdev);
if (ret) {