[PATCH 2/4] virtio: do not statically allocate root device

Mark McLoughlin
2008-12-15T13:00:33Z

We shouldn't be statically allocating the root device object,
so dynamically allocate it using root_device_register()
instead.

Also avoids this warning from 'rmmod virtio_pci':

Device 'virtio-pci' does not have a release() function, it is broken and must be fixed

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>
---
drivers/virtio/virtio_pci.c | 17 +++++++----------
1 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 265fdf2..bef6b45 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -73,10 +73,7 @@ MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
/* A PCI device has it's own struct device and so does a virtio device so
* we create a place for the virtio devices to show up in sysfs. I think it
* would make more sense for virtio to not insist on having it's own device. */
-static struct device virtio_pci_root = {
- .parent = NULL,
- .init_name = "virtio-pci",
-};
+static struct device *virtio_pci_root;

/* Convert a generic virtio device to our structure */
static struct virtio_pci_device *to_vp_device(struct virtio_device *vdev)
@@ -343,7 +340,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
if (vp_dev == NULL)
return -ENOMEM;

- vp_dev->vdev.dev.parent = &virtio_pci_root;
+ vp_dev->vdev.dev.parent = virtio_pci_root;
vp_dev->vdev.dev.release = virtio_pci_release_dev;
vp_dev->vdev.config = &virtio_pci_config_ops;
vp_dev->pci_dev = pci_dev;
@@ -437,13 +434,13 @@ static int __init virtio_pci_init(void)
{
int err;

- err = device_register(&virtio_pci_root);
- if (err)
- return err;
+ virtio_pci_root = root_device_register("virtio-pci");
+ if (IS_ERR(virtio_pci_root))
+ return PTR_ERR(virtio_pci_root);

err = pci_register_driver(&virtio_pci_driver);
if (err)
- device_unregister(&virtio_pci_root);
+ device_unregister(virtio_pci_root);

return err;
}
@@ -452,8 +449,8 @@ module_init(virtio_pci_init);

static void __exit virtio_pci_exit(void)
{
- device_unregister(&virtio_pci_root);
pci_unregister_driver(&virtio_pci_driver);
+ root_device_unregister(virtio_pci_root);
}

module_exit(virtio_pci_exit);
--
1.5.4.3