virtio: add drv_to_virtio to make code clearly
Add drv_to_virtio wrapper to get virtio_driver from device_driver. Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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2 changed files with 9 additions and 7 deletions
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@ -119,6 +119,11 @@ struct virtio_driver {
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#endif
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};
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static inline struct virtio_driver *drv_to_virtio(struct device_driver *drv)
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{
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return container_of(drv, struct virtio_driver, driver);
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}
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int register_virtio_driver(struct virtio_driver *drv);
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void unregister_virtio_driver(struct virtio_driver *drv);
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#endif /* _LINUX_VIRTIO_H */
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