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virtio_pci: move probe/remove code to common

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Most of initialization is device-independent.
Let's move it to common.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Michael S. Tsirkin
2015-01-13 11:23:32 +02:00
committed by Rusty Russell
parent 2bd56afd44
commit ff31d2e285
3 changed files with 77 additions and 72 deletions
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69
drivers/virtio/virtio_pci_common.c
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@@ -464,15 +464,80 @@ static const struct pci_device_id virtio_pci_id_table[] = {
MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
static void virtio_pci_release_dev(struct device *_d)
{
struct virtio_device *vdev = dev_to_virtio(_d);
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
/* As struct device is a kobject, it's not safe to
* free the memory (including the reference counter itself)
* until it's release callback. */
kfree(vp_dev);
}
static int virtio_pci_probe(struct pci_dev *pci_dev,
const struct pci_device_id *id)
{
return virtio_pci_legacy_probe(pci_dev, id);
struct virtio_pci_device *vp_dev;
int rc;
/* allocate our structure and fill it out */
vp_dev = kzalloc(sizeof(struct virtio_pci_device), GFP_KERNEL);
if (!vp_dev)
return -ENOMEM;
pci_set_drvdata(pci_dev, vp_dev);
vp_dev->vdev.dev.parent = &pci_dev->dev;
vp_dev->vdev.dev.release = virtio_pci_release_dev;
vp_dev->pci_dev = pci_dev;
INIT_LIST_HEAD(&vp_dev->virtqueues);
spin_lock_init(&vp_dev->lock);
/* Disable MSI/MSIX to bring device to a known good state. */
pci_msi_off(pci_dev);
/* enable the device */
rc = pci_enable_device(pci_dev);
if (rc)
goto err_enable_device;
rc = pci_request_regions(pci_dev, "virtio-pci");
if (rc)
goto err_request_regions;
rc = virtio_pci_legacy_probe(vp_dev);
if (rc)
goto err_probe;
pci_set_master(pci_dev);
rc = register_virtio_device(&vp_dev->vdev);
if (rc)
goto err_register;
return 0;
err_register:
virtio_pci_legacy_remove(vp_dev);
err_probe:
pci_release_regions(pci_dev);
err_request_regions:
pci_disable_device(pci_dev);
err_enable_device:
kfree(vp_dev);
return rc;
}
static void virtio_pci_remove(struct pci_dev *pci_dev)
{
virtio_pci_legacy_remove(pci_dev);
struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
unregister_virtio_device(&vp_dev->vdev);
virtio_pci_legacy_remove(pci_dev);
pci_release_regions(pci_dev);
pci_disable_device(pci_dev);
}
static struct pci_driver virtio_pci_driver = {