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authorRusty Russell <rusty@rustcorp.com.au>2007-11-19 11:20:42 -0500
committerRusty Russell <rusty@rustcorp.com.au>2007-11-19 11:20:42 +1100
commit74b2553f1d13e60fb27063204bd5b6908a6f8494 (patch)
treecd35e82d16cf190ccd95362478a598314de639ce /drivers/virtio/virtio.c
parentd1c856e0f1a4c946c6329cff126548ef4288735f (diff)
downloadop-kernel-dev-74b2553f1d13e60fb27063204bd5b6908a6f8494.zip
op-kernel-dev-74b2553f1d13e60fb27063204bd5b6908a6f8494.tar.gz
virtio: fix module/device unloading
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>
Diffstat (limited to 'drivers/virtio/virtio.c')
-rw-r--r--drivers/virtio/virtio.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 15d7787..69d7ea0 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -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);
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