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virtio: fix module/device unloading

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The virtio code never hooked through the ->remove callback.  Although
noone supports device removal at the moment, this code is already
needed for module unloading.

This of course also revealed bugs in virtio_blk, virtio_net and lguest
unloading paths.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2007-11-19 11:20:42 -05:00
parent d1c856e0f1
commit 74b2553f1d
4 changed files with 28 additions and 5 deletions
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13
drivers/virtio/virtio.c
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@@ -96,10 +96,23 @@ static int virtio_dev_probe(struct device *_d)
return err;
}
static int virtio_dev_remove(struct device *_d)
{
struct virtio_device *dev = container_of(_d,struct virtio_device,dev);
struct virtio_driver *drv = container_of(dev->dev.driver,
struct virtio_driver, driver);
dev->config->set_status(dev, dev->config->get_status(dev)
& ~VIRTIO_CONFIG_S_DRIVER);
drv->remove(dev);
return 0;
}
int register_virtio_driver(struct virtio_driver *driver)
{
driver->driver.bus = &virtio_bus;
driver->driver.probe = virtio_dev_probe;
driver->driver.remove = virtio_dev_remove;
return driver_register(&driver->driver);
}
EXPORT_SYMBOL_GPL(register_virtio_driver);